Open Access. Powered by Scholars. Published by Universities.®

Digital Commons Network™

Open Access. Powered by Scholars. Published by Universities.®

2016

Discipline
Institution
Keyword
Publication
Publication Type
File Type

Articles 151 - 180 of 24338

Full-Text Articles in Entire DC Network

Keterlaksanaan Kpl Dan Pembinaan Dosen Muda Berbasis Lesson Study, Media Agustina, Achmad Supriyanto, Burhanuddin Burhanuddin Dec 2016

Keterlaksanaan Kpl Dan Pembinaan Dosen Muda Berbasis Lesson Study, Media Agustina, Achmad Supriyanto, Burhanuddin Burhanuddin

Jurnal Pendidikan: Teori, Penelitian, dan Pengembangan

This study aims at assessing the accomplishment of Lecture and Practice Field (KPL) which its implementation is integrated with young lecturer training based on Lesson Study. This research employed a qualitative methodology. The data collection of this study was using documentation and observation sheet. The data analysis technique in qualitative descriptive study resulted in a description of the implementation of lesson study. The results showed that (1) the time and place of lectures is categorized good, (2) providing students KPL and young lecturers with excellent category, (3) the implementation of Lesson study is categorized excellent, (4) the performance of young …

Go to article

Pengaruh Model Problem Based Learning Dengan Pendekatan Inquiry Terhadap Hasil Belajar Siswa Sma, Moch. Zainuddin, Budijanto Budijanto, Ach. Amirudin Dec 2016

Pengaruh Model Problem Based Learning Dengan Pendekatan Inquiry Terhadap Hasil Belajar Siswa Sma, Moch. Zainuddin, Budijanto Budijanto, Ach. Amirudin

Jurnal Pendidikan: Teori, Penelitian, dan Pengembangan

The design used in this study is a quasi-experimental (quasi experiment). Subjects in this study were students of class X SMA Negeri 1 Sakra Timur Semester 2 academic year 2015/2016. independent variables in this study is a model of problem-based learning approach to inquiry and the dependent variable in this study is the student learning outcomes. The data in this study a number or score learning outcomes. Learning outcomes in question is gain score derived from the difference between pretest scores and posttes. The results of data analysis score geography student learning outcomes, showing that there was an increase in …

Go to article

Pengaruh Intrinsic Motivation Dan Innovationculture Terhadap Knowledge Tranfer Mahasiswa Dalam Pelaksanaan Magang, Erwin Harinurdin Dec 2016

Pengaruh Intrinsic Motivation Dan Innovationculture Terhadap Knowledge Tranfer Mahasiswa Dalam Pelaksanaan Magang, Erwin Harinurdin

Jurnal Vokasi Indonesia

There are two factors that encourage employees motivated in the work, which is intrinsic factor (motivator factors) and extrinsic (hygiene factors) (Herzberg, 1966) The purpose of this study was to determine whether the student intern intrinsic motivation has a positive effect on knowledge transfer, and for determine whether the innovative culture the organization has a positive effect on knowledge transfer student interns as well as to determine whether the innovative culture the organization has a positive influence on the intrinsic motivation of students internship. Berdasaskan test results using SEM known that intrinsic motivation is not proven to have influence postitif …

Go to article

Electrocatalytic Valorization Of Biomass Intermediates Via 1st-Row Transition Metal Electrocatalysts, Yujie Sun Dec 2016

Electrocatalytic Valorization Of Biomass Intermediates Via 1st-Row Transition Metal Electrocatalysts, Yujie Sun

Funded Research Records

No abstract provided.

Go to article

The Effects Of Repeated Global Self-Adapted Testing On Online Statistics Performance, Gita Sierra Hodell Dec 2016

The Effects Of Repeated Global Self-Adapted Testing On Online Statistics Performance, Gita Sierra Hodell

Master's Theses

The purpose of this study was to evaluate the effectiveness of a computerized academic testing format. Centered on the motivating and stress-reducing aspects of personal control, a modified form of global self-adapted testing (GSAT) was explored to help students who are challenged by test anxiety or low academic motivation. Forty-two students completed multiple GSATs throughout one semester of college-level, online statistics. Of those students, 20 volunteered to complete an academic motivation questionnaire at the beginning of the semester. The relationships between scores on the motivation questionnaire, GSAT use characteristics, and statistics performance were analyzed. Students who used the GSATs correctly …

Go to article

Minimization And Eulerian Formulation Of Differential Geometry Based Nonpolar Multiscale Solvation Models, Zhan Chen Dec 2016

Minimization And Eulerian Formulation Of Differential Geometry Based Nonpolar Multiscale Solvation Models, Zhan Chen

Mathematical Sciences: Faculty Publications

In this work, the existence of a global minimizer for the previous Lagrangian formulation of nonpolar solvation model proposed in [1] has been proved. One of the proofs involves a construction of a phase field model that converges to the Lagrangian formulation. Moreover, an Eulerian formulation of nonpolar solvation model is proposed and implemented under a similar parameterization scheme to that in [1]. By doing so, the connection, similarity and difference between the Eulerian formulation and its Lagrangian counterpart can be analyzed. It turns out that both of them have a great potential in solvation prediction for nonpolar molecules, while …

Go to article

Generation Of Vector Partially Coherent Optical Sources Using Phase-Only Spatial Light Modulators, Milo W. Hyde Iv, Santasri Bose-Pillai, David G. Voelz, Xifeng Xiao Dec 2016

Generation Of Vector Partially Coherent Optical Sources Using Phase-Only Spatial Light Modulators, Milo W. Hyde Iv, Santasri Bose-Pillai, David G. Voelz, Xifeng Xiao

Faculty Publications

A simple and flexible optical system for generating electromagnetic or vector partially coherent sources or beams is presented. The alternative design controls field amplitude (beam shape), coherence, and polarization using only spatial light modulators. This improvement makes the apparatus simpler to construct and significantly increases the flexibility of vector partially coherent source generators by allowing many different types of sources to be produced without changing the physical setup. The system’s layout and theoretical foundations are thoroughly discussed. The utility and flexibility of the proposed system are demonstrated by producing a vector Schell-model and non-Schell-model source. The experimental results are compared …

Go to article

Ph-Dependent Fluorescent Probe That Can Be Tuned For Cysteine Or Homocysteine, Yongkang Yue, Fangjun Huo, Xiaoqi Li, Ying Wen, Tao Yi, James C. Salamanca, Jorge O. Escobedo, Robert Strongin, Caixia Yin Dec 2016

Ph-Dependent Fluorescent Probe That Can Be Tuned For Cysteine Or Homocysteine, Yongkang Yue, Fangjun Huo, Xiaoqi Li, Ying Wen, Tao Yi, James C. Salamanca, Jorge O. Escobedo, Robert Strongin, Caixia Yin

Chemistry Faculty Publications and Presentations

The very close structural similarities between cysteine and homocysteine present a great challenge to achieve their selective detection using regular fluorescent probes, limiting the biological and pathological studies of these two amino thiols. A coumarin-based fluorescent probe was designed featuring pH-promoted distinct turn-on followed by ratiometric fluorescence responses for Cys and turn-on fluorescence response for Hcy through two different reaction paths. These specific responses demonstrate the activity differences between Cys and Hcy qualitatively for the first time. The probe could also be used for Cys and Hcy imaging in living cells.

Go to article

Winner's Curse Correction And Variable Thresholding Improve Performance Of Polygenic Risk Modeling Based On Genome-Wide Association Study Summary-Level Data, Jianxin Shi, Ju-Hyun Park, Jubao Duan, Sonja T. Berndt, Winton Moy, Kai Yu, Lei Song, William Wheeler, Xing Hua, Debra Silverman, Montserrat Garcia-Closas, Chao Agnes Hsiung, Jonine D. Figueroa, Victoria K. Cortessis, Nuria Malats, Margaret R. Karagas Dec 2016

Winner's Curse Correction And Variable Thresholding Improve Performance Of Polygenic Risk Modeling Based On Genome-Wide Association Study Summary-Level Data, Jianxin Shi, Ju-Hyun Park, Jubao Duan, Sonja T. Berndt, Winton Moy, Kai Yu, Lei Song, William Wheeler, Xing Hua, Debra Silverman, Montserrat Garcia-Closas, Chao Agnes Hsiung, Jonine D. Figueroa, Victoria K. Cortessis, Nuria Malats, Margaret R. Karagas

Dartmouth Scholarship

Recent heritability analyses have indicated that genome-wide association studies (GWAS) have the potential to improve genetic risk prediction for complex diseases based on polygenic risk score (PRS), a simple modelling technique that can be implemented using summary-level data from the discovery samples. We herein propose modifications to improve the performance of PRS. We introduce threshold-dependent winner’s-curse adjustments for marginal association coefficients that are used to weight the single-nucleotide polymorphisms (SNPs) in PRS. Further, as a way to incorporate external functional/annotation knowledge that could identify subsets of SNPs highly enriched for associations, we propose variable thresholds for SNPs selection. We applied …

Go to article

Infrared Spectroscopy Of Symbiotic Stars. Xi. Orbits For Southern S-Type Systems: Hen 3-461, Sy Mus, Hen 3-828, And Ar Pav, Francis C. Fekel, Kenneth H. Hinkle, Richard R. Joyce, Peter R. Wood Dec 2016

Infrared Spectroscopy Of Symbiotic Stars. Xi. Orbits For Southern S-Type Systems: Hen 3-461, Sy Mus, Hen 3-828, And Ar Pav, Francis C. Fekel, Kenneth H. Hinkle, Richard R. Joyce, Peter R. Wood

Information Systems and Engineering Management Research Publications

Employing new infrared radial velocities, we have computed spectroscopic orbits of the cool giants in four southern S-type symbiotic systems. The orbits for two of the systems, Hen 3-461 and Hen 3-828, have been determined for the first time, while orbits of the other two, SY Mus and AR Pav, have previously been determined. For the latter two systems, we compare our results with those in the literature. The low mass of the secondary of SY Mus suggests that it has gone through a common envelope phase. Hen 3-461 has an orbital period of 2271 days, one of the longest …

Go to article

Back-Flow Prevention Strategies For Stormwater Lines, Ron Evins Dec 2016

Back-Flow Prevention Strategies For Stormwater Lines, Ron Evins

September 29, 2016: Adaptive Structures and Innovative Solutions

No abstract provided.

Go to article

Generalized Multiband Typical Medium Dynamical Cluster Approximation: Application To (Ga,Mn)N, Yi Zhang, R. Nelson, Elisha Siddiqui, K. M. Tam, U. Yu, T. Berlijn, W. Ku, N. S. Vidhyadhiraja, J. Moreno, M. Jarrell Dec 2016

Generalized Multiband Typical Medium Dynamical Cluster Approximation: Application To (Ga,Mn)N, Yi Zhang, R. Nelson, Elisha Siddiqui, K. M. Tam, U. Yu, T. Berlijn, W. Ku, N. S. Vidhyadhiraja, J. Moreno, M. Jarrell

Faculty Publications

We generalize the multiband typical medium dynamical cluster approximation and the formalism introduced by Blackman, Esterling, and Berk so that it can deal with localization in multiband disordered systems with both diagonal and off-diagonal disorder with complicated potentials. We also introduce an ansatz for the momentum-resolved typical density of states that greatly improves the numerical stability of the method while preserving the independence of scattering events at different frequencies. Starting from the first-principles effective Hamiltonian, we apply this method to the diluted magnetic semiconductor Ga1-xMnxN, and find the impurity band is completely localized for Mn concentrations x<0.03, while for 0.03

Go to article

Searches For R -Parity-Violating Supersymmetry In Pp Collisions At Square Root Of S = 8 Tev In Final States With 0-4 Leptons, V. Khachatryan, A. M. Sirunyan, Marc M. Baarmand, Vallary Bhopatkar, Stefano Colafranceschi, Marcus Hohlmann, H Kalakhety, Daniel Noonan, Tuhin S. Roy, Francisco X. Yumiceva Dec 2016

Searches For R -Parity-Violating Supersymmetry In Pp Collisions At Square Root Of S = 8 Tev In Final States With 0-4 Leptons, V. Khachatryan, A. M. Sirunyan, Marc M. Baarmand, Vallary Bhopatkar, Stefano Colafranceschi, Marcus Hohlmann, H Kalakhety, Daniel Noonan, Tuhin S. Roy, Francisco X. Yumiceva

Aerospace, Physics, and Space Science Faculty Publications

Results are presented from searches for R-parity-violating supersymmetry in events produced in pp collisions at s=8 TeV at the LHC. Final states with 0, 1, 2, or multiple leptons are considered independently. The analysis is performed on data collected by the CMS experiment corresponding to an integrated luminosity of 19.5 fb-1. No excesses of events above the standard model expectations are observed, and 95% confidence level limits are set on supersymmetric particle masses and production cross sections. The results are interpreted in models featuring R-parity-violating decays of the lightest supersymmetric particle, which in the studied scenarios can be either the …

Go to article

Helping Hand Or A Hurdle Too High? An Evaluation Of Developmental Coursework At Arkansas's Flagship University, Evan Rhinesmith Dec 2016

Helping Hand Or A Hurdle Too High? An Evaluation Of Developmental Coursework At Arkansas's Flagship University, Evan Rhinesmith

Education Reform Faculty and Graduate Students Publications

High school graduation serves as an important gateway to increased professional opportunities. Not only does a high school graduate improve the national economy, a high school diploma is the key to opening the door to college. However, obtaining a high school degree does not necessarily ensure college readiness. In fact, many high school graduates are not prepared for college coursework, but still apply to and attend college in our college for all system. The class of 2013 saw only 38 percent of students test at a level considered prepared for college on the reading portion of the NAEP, but the …

Go to article

Threats To Information Protection - Industry And Academic Perspectives: An Annotated Bibliography, Michael E. Whitman, Herbert J. Mattord Dec 2016

Threats To Information Protection - Industry And Academic Perspectives: An Annotated Bibliography, Michael E. Whitman, Herbert J. Mattord

Journal of Cybersecurity Education, Research and Practice

Threats to information assets have always been a concern to those responsible for making information useful and defending its value. The concepts of threat, threat agent, threat events and threat sources have evolved in recent years have very precise definitions. A summary of threat classification models used in academic research is provided along with a summary of recent industry threat assessment reports. Finally, the results from a recent study, 2015 SEC/CISE Threats to Information Protection Report Including a Current Snapshot of the State of the Industry, are given.

Go to article

From The Editors, Herbert J. Mattord, Michael E. Whitman, Carole L. Hollingsworth Dec 2016

From The Editors, Herbert J. Mattord, Michael E. Whitman, Carole L. Hollingsworth

Journal of Cybersecurity Education, Research and Practice

Welcome to the second issue of the Journal of Cybersecurity Education, Research and Practice (JCERP).

Go to article

Towards An In-Depth Understanding Of Deep Packet Inspection Using A Suite Of Industrial Control Systems Protocol Packets, Guillermo A. Francia Iii, Xavier P. Francia, Anthony M. Pruitt Dec 2016

Towards An In-Depth Understanding Of Deep Packet Inspection Using A Suite Of Industrial Control Systems Protocol Packets, Guillermo A. Francia Iii, Xavier P. Francia, Anthony M. Pruitt

Journal of Cybersecurity Education, Research and Practice

Industrial control systems (ICS) are increasingly at risk and vulnerable to internal and external threats. These systems are integral part of our nation’s critical infrastructures. Consequently, a successful cyberattack on one of these could present disastrous consequences to human life and property as well. It is imperative that cybersecurity professionals gain a good understanding of these systems particularly in the area of communication protocols. Traditional Transmission Control Protocol (TCP) and User Datagram Protocol (UDP) are made to encapsulate some of these ICS protocols which may enable malicious payload to get through the network firewall and thus, gain entry into the …

Go to article

Planning And Implementing A Successful Nsa-Nsf Gencyber Summer Cyber Academy, Bryson R. Payne, Tamirat Abegaz, Keith Antonia Dec 2016

Planning And Implementing A Successful Nsa-Nsf Gencyber Summer Cyber Academy, Bryson R. Payne, Tamirat Abegaz, Keith Antonia

Journal of Cybersecurity Education, Research and Practice

The GenCyber program is jointly sponsored by the National Security Agency (NSA) and the National Science Foundation (NSF) to help faculty and cybersecurity experts provide summer cybersecurity camp experiences for K-12 students and teachers. The main objective of the program is to attract, educate, and motivate a new generation of young men and women to help address the nationwide shortage of trained cybersecurity professionals. The curriculum is flexible and centers on ten cybersecurity first principles. Currently, GenCyber provides cyber camp options for three types of audiences: students, teachers, and a combination of both teachers and students. In 2016, over 120 …

Go to article

Lithium-Sulfur (Selenium) Batteries: Interface Issues And Solving Strategies, Nian-Wu Li, Ya-Xia Yin, Yu-Guo Guo Dec 2016

Lithium-Sulfur (Selenium) Batteries: Interface Issues And Solving Strategies, Nian-Wu Li, Ya-Xia Yin, Yu-Guo Guo

Journal of Electrochemistry

The stable interface is still a challenge for lithium-sulfur (selenium) batteries because of the low conductivity of sulfur (selenium), dissolution of polysulfide (polyselenide), volume expansion of sulfur (selenium), and lithium dendrite growth. This review describers some recent developments in lithium-sulfur (selenium) batteries and highlights our efforts in this field. The possible strategies for building stable interface in the lithium-sulfur (selenium) batteries including nano-restriction effect, chemical bonding, interface adsorption, surface coating, electrolyte optimization, and Lithium anode treatment have been discussed.

Go to article

Stm Investigation Of Oxygen Reduction Reaction On Solid Interface In Fuel Cell, Zhen-Feng Cai, Bing Sun, Wen-Jie Jiang, Ting Chen, Dong Wang, Li-Jun Wan Dec 2016

Stm Investigation Of Oxygen Reduction Reaction On Solid Interface In Fuel Cell, Zhen-Feng Cai, Bing Sun, Wen-Jie Jiang, Ting Chen, Dong Wang, Li-Jun Wan

Journal of Electrochemistry

An electrocatalyst for oxygen reduction reaction (ORR) is an important component for fuel cells. An investigation at interfacial electrochemical reactions toward ORR at a molecular scale benefits mechanistic understanding as well as rational design of catalysts. Scanning tunneling microscopy (STM) has been proven to be a powerful tool to monitor chemical reactions and to provide in-situ information about the interfacial electrochemical reactions at a molecular level. This review summarizes the recent STM studies in monitoring the interface processes such as morphological changes, molecular changes, reaction intermediates, and oxidation products. The prospects of future development in this field are outlined.

Go to article

Electrochemical Behaviors And Determinations Of Terbutaline Sulfate At Poly Eriochrome Black T Modified Electrode, Yan-Jie Zheng, Hong Yao, Shao-Huang Weng, Hua-Ping Peng, Shi-Wen Gong, Li Huang, Qiang Dai, Xin-Hua Lin Dec 2016

Electrochemical Behaviors And Determinations Of Terbutaline Sulfate At Poly Eriochrome Black T Modified Electrode, Yan-Jie Zheng, Hong Yao, Shao-Huang Weng, Hua-Ping Peng, Shi-Wen Gong, Li Huang, Qiang Dai, Xin-Hua Lin

Journal of Electrochemistry

The poly eriochrome black T modified electrode was prepared by electropolymerization. This modified electrode was characterized by scanning electron microscopy(SEM), electrochemical impedance spectroscopy(EIS) and cyclic voltammetry (CV). The electrochemical behaviors of terbutaline sulfate were studied by CV, while the recoveries were measured by differential pulse voltammetry (DPV). The modified electrode shows excellent electrocatalytic characteristics for terbutaline sulfate. In pH 7.0 phosphate buffer solution, the oxidation peak currents obtained by DPV were linear to the terbutaline sulfate concentrations over the range of 1.2x10-7~2.0x10-6 mol•L-1. The detection limit was estimated to be 1.5x10-8  mol•L-1 and …

Go to article

Chitosan/Nonahydrate Gel Derived Fe-N-Doped Porous Carbon Sheet As High-Efficient Orr Electrocatalyst, Fan-Lu Meng, Xin-Bo Zhang, Jun-Min Yan Dec 2016

Chitosan/Nonahydrate Gel Derived Fe-N-Doped Porous Carbon Sheet As High-Efficient Orr Electrocatalyst, Fan-Lu Meng, Xin-Bo Zhang, Jun-Min Yan

Journal of Electrochemistry

The chitosan/nonahydrate gel was used as a precursor to realize the uniform mixture of N-polymer and metal salt. After lyophilization treatment, the gel went through heat treatment and acid etch. Accordingly, the Fe-N-doped porous carbon sheet with homogenous composition and microstructure was prepared. Compared with the commercial Pt/C catalyst, the Fe-N-doped porous carbon sheet exhibited more positive onset potential and half-wave potential, higher current density, and especially, excellent durability. The power density of 318 mW·cm-2 was obtained in alkaline fuel cell with the Fe-N-doped porous carbon sheet as a cathode catalyst, which is higher than 267 mW·cm-2 with …

Go to article

Synthesis Of Ultrathin Co3O4 Nanoflakes Film Material For Electrochemical Sensing, Hui-Juan Wang Dec 2016

Synthesis Of Ultrathin Co3O4 Nanoflakes Film Material For Electrochemical Sensing, Hui-Juan Wang

Journal of Electrochemistry

Ultrathin cobalt oxide (Co3O4) nanoflakes film material was synthesized by using an electro-deposited cobalt layer as a raw material through a simple oxidation method and followed by a heat treatment at 350 oC. The physical characterizations of the Co3O4 nanoflakes film were performed by scanning electron microscopy (SEM), X-ray diffraction (XRD) and transmission electron microscopy (TEM) technologies, and the electrochemical activity was measured by cyclic voltammetry (CV). As a promising material for electrochemical sensing, the as-synthesized ultrathin Co3O4 nanoflakes film material exhibited excellent electrochemical activity for H2O …

Go to article

Essays On Economics Of Gender And Labour Market., Kanika Mahajan Dr. Dec 2016

Essays On Economics Of Gender And Labour Market., Kanika Mahajan Dr.

Doctoral Theses

The differences in labor market outcomes between males and females have been of interest to the economists for at least past half a century. Gender inequality in the labor market manifests itself in the form of wage and employment gaps between males and females. However, little is understood about why these inequalities emerge. There are taste based theories of discrimination, occupational exclusion and theories of statistical discrimination. In this thesis, we study gender disparities in the labor market of rural India. The main objective of this thesis is to further our understanding about the existing wage and employment disparities in …

Go to article

Special Issue On Interfacial Electrochemistry, Bing-Wei Mao Dec 2016

Special Issue On Interfacial Electrochemistry, Bing-Wei Mao

Journal of Electrochemistry

/

Go to article

Syntheses Of Ag@Pd@Pt Nanoparticles With Tunable Shell Thickness For Electrochemical Oxidation Of Formic Acid, Xiao-Dong Lin, Du-Hong Chen, Zhong-Qun Tian Dec 2016

Syntheses Of Ag@Pd@Pt Nanoparticles With Tunable Shell Thickness For Electrochemical Oxidation Of Formic Acid, Xiao-Dong Lin, Du-Hong Chen, Zhong-Qun Tian

Journal of Electrochemistry

In an effort to lower cost of a catalyst, the silver (Ag) core with palladium (Pd) layer then platinum (Pt) island (Ag@Pd@Pt) nanoparticles were synthesized and the electrocatalytic activity of Ag@Pd@Pt nanoparticles on formic acid was compared with that of Au@Pd@Pt nanoparticles reported previously. The results showed that the existence of a small amount of Pt could significantly improve the activity of the catalyst. When the surface coverage of Pt approached 0.5 monolayers, the activity of Ag@Pd@Pt nanoparticles reached the maximum. Though the onset potential of the electro-oxidation was slightly more positive (about 50 mV), the overall electrocatalytic activity of …

Go to article

Investigation On Laser Induced Deposition Of Cu-Based Materials At [Bmim]Bf4/Pt Electrode Interface, Min-Min Xu, Jin-Hua Mei, Jian-Lin Yao, Ren-Ao Gu Dec 2016

Investigation On Laser Induced Deposition Of Cu-Based Materials At [Bmim]Bf4/Pt Electrode Interface, Min-Min Xu, Jin-Hua Mei, Jian-Lin Yao, Ren-Ao Gu

Journal of Electrochemistry

By controlling the negative potential, Cu-based materials were deposited at the [BMIm]BF4/Pt electrode interface under the laser irradiation. The effects of laser power and irradiation time on the yield of deposition products were studied by using different laser powers and different irradiation time. The product yield could be directly determined by the size of deposition point through the observation from the optical microscope. Further mechanism study combined with the formula deduced that the thermal effect of the laser could make the electrode surface temperature rise 110 degrees, which can promote the occurrence of electrodeposition. By SEM characterization, the …

Go to article

Intrinsic Interfacial Property Between High-Voltage Lini0.5Mn1.5O4 Cathode And Electrolyte, Li Li, Jing-Jing Xu, Shao-Jie Han, Wei Lu, Li-Wei Chen Dec 2016

Intrinsic Interfacial Property Between High-Voltage Lini0.5Mn1.5O4 Cathode And Electrolyte, Li Li, Jing-Jing Xu, Shao-Jie Han, Wei Lu, Li-Wei Chen

Journal of Electrochemistry

To obtain high energy density, developing high-voltage cathode materials is an effective approach. The cathode/electrolyte interface stability is the key factor for the cycle performance and safety performance of high-voltage lithium ion batteries. It is, therefore, of significant importance to study the stability of cathode/electrolyte interface. However, many reports have shown that at the cathode/electrolyte interface the cathodes were prepared by coating the mixture of active materials with a conductive additive and a binder on an Al current collector. The introduction of additives will interfere the surface morphology and component analyses, resulting in difficulty to acquire the intrinsic information at …

Go to article

Hydrogen Evolution Properties On Individual Mos2 Nanosheets, Yu Gao, Juan Zhou, Yu-Wen Liu, Sheng-Li Chen Dec 2016

Hydrogen Evolution Properties On Individual Mos2 Nanosheets, Yu Gao, Juan Zhou, Yu-Wen Liu, Sheng-Li Chen

Journal of Electrochemistry

Molybdenum disulfide (MoS2) has been acknowledged to play important roles in hydrogen evolution reaction (HER) for hydrogen energy technology. Both computational and experimental results have suggested that the promising catalytic activity of MoS2 for the HER could be attributed to the sulfur edges of two-dimensional nanosheets, while their basal planes were catalytically inert. In order to verify this conclusion, we prepared single MoS2 sheet electrodes which were made of individual MoS2 sheets attached on the self-assembly monolayers (SAM) of SH(CH2)15COOH at Au ultramicroelectrodes (Au/SAM/MoS2). The single MoS2 sheet …

Go to article

An Stm Study On The Structure Of Pt(100)/Ionic Liquid Omipf6 Interface, Jin Peng, Mian-Gang Li, Li-Qiang Xie, Jia-Wei Yan, Bing-Wei Mao Dec 2016

An Stm Study On The Structure Of Pt(100)/Ionic Liquid Omipf6 Interface, Jin Peng, Mian-Gang Li, Li-Qiang Xie, Jia-Wei Yan, Bing-Wei Mao

Journal of Electrochemistry

Potential-dependent structures of Pt(100)/ionic liquid 1-methyl-3-octylimidazolium hexafluorophosphate (OMIPF6) interface have been studied by electrochemical scanning tunneling microscopy (ECSTM). The cation OMI+ forms ordered structure on Pt(100) surface, which exists in a potential region of about 1.2 V. When the potential is more negative than -0.6 V, it can be seen that the ordered structure transforms to disordered structure. When the potential shifts positively to +0.6 V, the desorption of cations OMI+ occurs, which indicates that strong electrostatic repulsion is needed to overcome chemical interaction between OMIPF6 and Pt(100) surface, leading to the desorption. The above results …

Go to article

First Prev Next Last