One-Step Synthesis Of Pani/Nihcf Hybrid Film Using Unipolar Pulse Electrodeposition And Its Electrocatalytic Reduction Performance For H2O2 Detection,
2014
College of Chemistry and Chemical Engineering, Taiyuan University of Technology, Taiyuan 030024, China;
One-Step Synthesis Of Pani/Nihcf Hybrid Film Using Unipolar Pulse Electrodeposition And Its Electrocatalytic Reduction Performance For H2O2 Detection, Sen-Liang Liao, Xiu-Min Li, Xiao-Gang Hao, Yan-Hong Wang, Chun-Feng Xue, Yong-Hong Wang
Journal of Electrochemistry
Organic–inorganic hybrid films composed of polyaniline/nickel hexacyanoferrate (PANI/NiHCF) were fabricated on platinum substrates using unipolar pulse one-step electrodeposition. The deposition mechanism of hybrid film was proposed: Due to high potential of unipolar pulse electrodeposition, which avoided the reduction of Fe(CN)63-, the films with high electrocatalytic property and “insoluble” form of NiHCF were achieved. The morphology and composition of PANI/NiHCF hybrid film were characterized by scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), and Fourier transform infrared spectroscopy (FT-IR). The effect of pulse potential on the electrochemical performance of hybrid film was investigated in detail. Results showed that …
Electrochemical Applications Of Single-Walled Carbon Nanohorns,
2014
College of Chemistry and Chemical Engineering, Fujian Normal University, Fuzhou 350007, China;
Electrochemical Applications Of Single-Walled Carbon Nanohorns, Su-Ping Li, Huai-Min Guan, Shu-Yun Zhu, Muhammad Rehan Hassan Shah Gilani, Saima Hanif, Guo-Bao Xu, Yue-Jin Tong
Journal of Electrochemistry
Single-wall carbon nanohorns (SWCNHs) have unique properties, such as a large specific surface area, good electrical conductivity and biocompatibility. It has been widely utilized in many fields. In the present review, the progress in electrochemistry study of SWCNHs has been summarized and the future research trends have been proposed.
Direct Electrochemistry And Glucose Biosensing Of Glucose Oxidase-Gold Nanoparticles Composite Synthesized By Enzyme Method,
2014
Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research (Ministry of Education), College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha 410081, China;
Direct Electrochemistry And Glucose Biosensing Of Glucose Oxidase-Gold Nanoparticles Composite Synthesized By Enzyme Method, Fang He, Xiao-Li Qin, Ying-Chun Fu, Chao Chen, Qing-Ji Xie, Shou-Zhuo Yao
Journal of Electrochemistry
Glucose oxidase (GOx)-gold nanoparticles (AuNPs) composite was synthesized by the one-pot enzyme reaction in the mixture solution of NaAuCl4, GOx and glucose, and a Nafion/GOx-AuNPs/glassy carbon electrode was fabricated by the cast-coating method to examine the direct electrochemistry of GOx and the biosensing performance on this electrode. Such a GOx-AuNPs composite showed good direct-electrochemistry activity and bioactivity of GOx, probably because the enzyme-mediated AuNPs are close to the redox active centers of GOx. This enzyme electrode exhibited a linear amperometric response to glucose concentration (0.54 mmol·L-1) at -0.4 V (vs. SCE), and a detection limit of …
Density Functional Theory Study On The Structures Of Solvent-Ion In The Electrolyte Of Lithium Ion Battery,
2014
School of Chemistry and Environment, Engineering Research Center of Materials and Technology for Electrochemical Energy Storage (Ministry of Education), and Key Laboratory of Electrochemical Technology on Energy Storage and Power Generation of Guangdong Higher Education Institutes, South China Normal University, Guangzhou 510631, China;
Density Functional Theory Study On The Structures Of Solvent-Ion In The Electrolyte Of Lithium Ion Battery, Li-Dan Xing, Ru Yang, Xian-Wen Tang, Wen-Na Huang, Qi-Feng Liu, Qi-Peng Yu, Wei-Shan Li
Journal of Electrochemistry
In this work, the possible structures of solvent-ion complex, resulting from the electrostatic interaction in the propylene carbonate (PC) base electrolyte of lithium ion battery, have been investigated using the density functional theory. The calculated results show that the structure of solvent-ion complex depends on the solvent number. In the PC base electrolyte, maximum number of PC solvents that coexist in the Li+-solvent sheath is four. Additionally, the salt anion exists in a complex with the positively charged alkyl group of PC rather than in a free state. The calculated results give a good explanation to the reported …
Educational Modeling For Fault Analysis Of Power Systems With Statcom Controllers Using Simulink,
2014
University of New Orleans
Educational Modeling For Fault Analysis Of Power Systems With Statcom Controllers Using Simulink, Tetiana Brockhoeft
LSU New Orleans Theses and Dissertations
The analysis of power systems under fault condition represents one of the most important and complex tasks in power engineering. The study and detection of these faults are necessary to ensure that the reliability and stability of the power system do not suffer a decrement as a result of a critical event such as fault. The purpose of this thesis is to develop and to present an educational tool for students to model FACTS devices using Simulink. Furthermore, the development of this thesis provides the means for students to model different types of faults. The development is based on presenting …
2014 Fall Engr333 Project Final Report,
2014
Calvin University
2014 Fall Engr333 Project Final Report, John Sherwood, Jonathan Crow, Nicolaas Ourensma, Zak Devries, Andy Frandsen, Jack Kregel, Ryan Rhodes, Connor Vandongen, Schieffer Kwong, Jee Myung Kim, Matthew Deyoung, Jeff Demaagd, Tyler Devries, Doug Faber, Garrick Hershberger, Jake Derooy, Dustin Brouwer, David Evenhouse, Patrick Anderson, Thomas Brown, Ed Smit, Joel Smith, Thane Symens, Kaitlyn Weinstein, Seth Koetje, Nick Memmelaar, Austin Juza, Matt Ramaker, Ryan Demeester, Jordan Newhof, Wes Richards, Josh Vanderbyl
ENGR 333
The net-zero homes project that this class worked on throughout the semester was designed to determine what it would take to bring a home in Grand Rapids, Michigan to the status of net-zero and whether or not it is feasible to do so. The idea behind a net-zero home is to reduce the energy usage in the home, whether it is by lifestyle changes, insulation additions, or by appliance upgrades, and then produce the remaining energy deficit from renewable sources, so that the homeowner has a net usage of zero at the end of the year. This report details the …
2014 Fall Engr333 Student Seminar Presentation,
2014
Calvin University
2014 Fall Engr333 Student Seminar Presentation, John Sherwood, Jonathan Crow, Nicolaas Ourensma, Zak Devries, Andy Frandsen, Jack Kregel, Ryan Rhodes, Connor Vandongen, Schieffer Kwong, Jee Myung Kim, Matthew Deyoung, Jeff Demaagd, Tyler Devries, Doug Faber, Garrick Hershberger, Jake Derooy, Dustin Brouwer, David Evenhouse, Patrick Anderson, Thomas Brown, Ed Smit, Joel Smith, Thane Symens, Kaitlyn Weinstein, Seth Koetje, Nick Memmelaar, Austin Juza, Matt Ramaker, Ryan Demeester, Jordan Newhof, Wes Richards, Josh Vanderbyl
ENGR 333
File for student presentation, given by students in the Fall 2014 class of ENGR333.
Indirect Matrix Converter As Standard Power Electronic Interface,
2014
University of Arkansas, Fayetteville
Indirect Matrix Converter As Standard Power Electronic Interface, Andrés Escobar-Mejía
Graduate Theses and Dissertations
The increase in the penetration levels of distributed generation in the modern power grid and its importance in future energy systems have accelerated the interest of developing new power electronic interfaces for the energy conversion process. The feasibility of applying the indirect matrix converter as the standard power electronic interface for applications with power ratings from several kW to few MW is addressed in this dissertation. Special attention is given to those applications where space dominates the power electronic requirements. The main motivation for using the indirect matrix converter is that eliminates the energy storage component in the way of …
The Role Of Quantum Dot Size On The Performance Of Intermediate Band Solar Cells,
2014
University of Arkansas, Fayetteville
The Role Of Quantum Dot Size On The Performance Of Intermediate Band Solar Cells, Najla Alnami
Graduate Theses and Dissertations
The goal of this thesis is to understand possible mechanisms for the reported decrease of the open circuit voltage and solar cell efficiency in quantum dot (QD) intermediate band solar cells (IBSCs). More specifically, the effect of indium arsenide (InAs) QD height on the open circuit voltage and solar cell efficiency was studied in a systematic way. To explore this effect in QD solar cells, several solar cells (SCs) were grown with varying InAs QD heights. All experimental characteristics of the QD solar cells were compared to a reference structure without QDs. All samples were grown by Molecular Beam Epitaxy …
Buck Converter,
2014
California Polytechnic State University - San Luis Obispo
Buck Converter, Bowen Liu
Electrical Engineering
The recent sustainable energy growth triggered a huge power electronics demand, specifically related to power conversion. My senior project is a design of a buck converter which steps down the voltage from photovoltaic cells ranging from 5 to 40V to a rechargeable battery with 5V. This converter has a high enough power efficiency to effectively convert the energy harnessed from PV panels.
Power Chest Strap,
2014
California Polytechnic State University - San Luis Obispo
Power Chest Strap, Adrianne Thoroddsson, Dennis Lin
Electrical Engineering
The Power Chest Strap is an unobtrusive device, like a heart rate monitor, worn around the chest that harvests energy from the expansion of the chest during breathing. The chest strap stores electrical energy that can charge electronic devices such as cell phones. Since small portable devices grow in number, the power strap allows a convenient way to charge your device without having to find a wall outlet for a charger. Research on systems that scavenge energy from arm or leg movement already exist, but these systems require the ability of the user to move their arms and legs. The …
Energy Harvesting From Exercise Machines: Lt8705 Dc-Dc Conversion For Elliptical Trainers,
2014
California Polytechnic State University - San Luis Obispo
Energy Harvesting From Exercise Machines: Lt8705 Dc-Dc Conversion For Elliptical Trainers, Braden Burk, Raj Bhula, Nathan Mckay
Electrical Engineering
Cal Poly’s Energy Harvesting from Exercise Machines (EHFEM) program aims to power the grid using human energy harvested from exercise machines in its gym. Doing so could save the school money and increase the total supply of power available on the grid. This document belongs to one of many groups attempting to design a suitable DC-DC conversion system for an elliptical trainer using an LT8705 Four-Switch Buck-Boost converter. Past teams have built other converters and developed system compatibility characteristics such as filtering, safety, and stability for interfacing components. These teams fall into one of two departments in EHFEM: DC-DC Conversion …
Photoelectric Characterization Of Bacteriorhodopsin Reconstituted In Lipid Bilayer Membrane,
2014
University of Arkansas, Fayetteville
Photoelectric Characterization Of Bacteriorhodopsin Reconstituted In Lipid Bilayer Membrane, Joel Kamwa
Graduate Theses and Dissertations
The objective of this work was to conduct basic research in biologically inspired energy conversion solutions. A photosynthetic protein (Bacteriorhodopsin) was reconstituted in a bi-layer membrane. Then, when a laser beam was shined on the membrane, the photon energy was used by the protein to pump protons across the membrane. The translocation of protons across the membrane was measured as photocurrent. For this purpose, a system was built to characterize the lipid bilayer membranes and to measure the photocurrent. The lipid bilayer membrane was characterized by its capacitance and resistance. A picoampere photocurrent was observed when Bacteriorhodopsin protein was present …
Metal Assisted Nanowire Growth For Silicon Nanowire/Amorphous Silicon Composite Solar Cell,
2014
University of Arkansas, Fayetteville
Metal Assisted Nanowire Growth For Silicon Nanowire/Amorphous Silicon Composite Solar Cell, Asmaa Ali Sadoon
Graduate Theses and Dissertations
Solar cells are photovoltaic devices that convert the energy of light to electricity by the photovoltaic effect. Crystalline silicon-based solar cells are the most dominant solar cells in the market today due to the high efficiency and relatively low cost. However, the cost of such solar cell is still high due to the large amount of material that is consumed in fabricating such a device. Polycrystalline/amorphous thin films and nanomaterial technologies have emerged to reduce the high cost of c-Si based solar cells and increase the efficiency. In this research, we combined these two technologies to propose and fabricate silicon …
Design, Analysis And Implementation Of An Experimental System To Harvest Energy From Atmospheric Temperature Variations Using Ethyl Chloride Filled Bellows,
2014
Clemson University
Design, Analysis And Implementation Of An Experimental System To Harvest Energy From Atmospheric Temperature Variations Using Ethyl Chloride Filled Bellows, Gibran Ali
All Theses
The increase in global warming and the dwindling supplies of fossil fuels have shifted the focus from traditional to alternate sources of energy. This has resulted in a concerted effort towards finding new energy sources as well as better understanding traditional renewable energy sources such as wind and solar power. In addition to the shift in focus towards alternate energy, the last two decades have offered a dramatic rise in the use of digital technologies such as wireless sensor networks that require small but isolated power supplies. Energy harvesting, a method to gather energy from ambient sources including sunlight, vibrations, …
Wirelessly Controlled Smart Outlet,
2014
California Polytechnic State University - San Luis Obispo
Wirelessly Controlled Smart Outlet, Andrew Godsil, Ariel Dubinsky
Electrical Engineering
Popularity of home automation devices has increased greatly in recent years due to higher affordability and simplicity through smartphone and tablet connectivity. For the purpose of this experiment, we have developed the Smart Outlet: a stand-alone communication unit, used to connect home outlets to the internet. The Smart Outlet controls lighting and simple appliances throughout the home, remotely, using wireless commands from the web. A Google Calendar interface directly controls the outlets’ function by scheduling them with dedicated calendar events. The calendar’s interface can even be accessed from multiple different platforms (i.e. phones, computers, tablets) for the convenience of all …
Microprocessor Management Of Energy Harvesting Buck Boost Converters,
2014
California Polytechnic State University, San Luis Obispo
Microprocessor Management Of Energy Harvesting Buck Boost Converters, Timothy O'Sullivan
Electrical Engineering
No abstract provided.
High Voltage Pulse-Width Generator For The Algae Biofuel Project,
2014
California Polytechnic State University - San Luis Obispo
High Voltage Pulse-Width Generator For The Algae Biofuel Project, Philip Yu, Stephen Leung
Electrical Engineering
This purpose of this project, sponsored by Boeing and advised by Dr. Arakaki and Dr. Taufik, is to build a high voltage pulse width generator that lyses algae cells to harvest the biofuel within. This project uses Emmanuel Loza's thesis on a cascaded high voltage converter with variable control to build a portable pulse width generator with independent control on the peak voltage, pulse width, and frequency. The project focuses on creating a pulse width generator capable of finding the most optimal pulsed electric field to lyse algae. The pulse width module ranges from 10V-80V peak voltage, 60Hz-100 kHz frequency, …
Numerical Simulation Of The Heat Leakage At The Gasket Region Of Domestic Refrigerators,
2014
Clemson University
Numerical Simulation Of The Heat Leakage At The Gasket Region Of Domestic Refrigerators, Feng Gao
All Theses
Computational Fluid Dynamics (CFD) simulations are performed to investigate the heat loss at the gasket of a standard over/under domestic refrigerator. The study numerically simulates a unique experimental test cell with only the gasket region exposed to the ambient environment and other parts protected by insulation (see picture below). The test cell is cubic with an interior cavity having dimensions 2' x 2' x 2' within which a heating element is placed to create a specified temperature difference. A matching set of door and side panels exposes a 2' width of the gasket region to heat transfer with the surroundings. …
Modeling Sustainability In Renewable Energy Supply Chain Systems,
2014
Clemson University
Modeling Sustainability In Renewable Energy Supply Chain Systems, Fei Xie
All Dissertations
This dissertation aims at modeling sustainability of renewable fuel supply chain systems against emerging challenges. In particular, the dissertation focuses on the biofuel supply chain system design, and manages to develop advanced modeling framework and corresponding solution methods in tackling challenges in sustaining biofuel supply chain systems. These challenges include: (1) to integrate 'environmental thinking' into the long-term biofuel supply chain planning; (2) to adopt multimodal transportation to mitigate seasonality in biofuel supply chain operations; (3) to provide strategies in hedging against uncertainty from conversion technology; and (4) to develop methodologies in long-term sequential planning of the biofuel supply chain …
