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

Digital Commons Network™

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

2002

Discipline
Institution
Keyword
Publication
Publication Type
File Type

Articles 601 - 630 of 11881

Full-Text Articles in Entire DC Network

Nano-Sized Cobalt-Based Oxides As Negative Electrode For Lithium-Ion Batteries, Feng Huang, Zheng-Yong Yuan, Yun-Hong Zhou, Ju-Tang Sun Nov 2002

Nano-Sized Cobalt-Based Oxides As Negative Electrode For Lithium-Ion Batteries, Feng Huang, Zheng-Yong Yuan, Yun-Hong Zhou, Ju-Tang Sun

Journal of Electrochemistry

Nanosized cobalt-based oxide (Co3O4, CoB1.36O2.8 and CoB0.5Al0.1O1.5) samples were prepared by rheological phase method and were tested as anodes in secondary lithium batteries. The cells were cycled between 0.01V and 3.00 V. The best electrochemical performance was obtained from the Co3O4 cell, which retained 95% of its initial capacity (931 mAh/g) after 30 cycles. The doping of B, Al reduced the reversible capacity during the first discharge/charge cycle, and the quantity of reversible capacity reduced with B, Al increasing. The modifying structures at difference …

Go to article

Properties Of Domestic Natural Graphite Used For Li-Ion Batteries, Cui-Wei Du, Yu-Juan Zhao, Gang Zhang, Yin-Shun Wu, Qing-Guo Liu Nov 2002

Properties Of Domestic Natural Graphite Used For Li-Ion Batteries, Cui-Wei Du, Yu-Juan Zhao, Gang Zhang, Yin-Shun Wu, Qing-Guo Liu

Journal of Electrochemistry

The structure, physical characteristics and electrochemical properties of the natural graphite produced in Shandong province have been studied. The result of X-ray diffraction showed that the graphite consisted of hexagonal structure and rhombic structure (30% rhombic structure). It was fine crystal graphite. Used as a negative material of Lithium ion battery, the natural graphite showed excellent voltage and high energy capacity, but poor compatibility with electrolyte solution containing propylene carbonate (PC) for its own structure limitation.

Go to article

Effect Of Dissolved Oxygen On The Corrosion Behavior Of Coalesced Copper And Stainless Steel-206 In Acetic Solutions, Rong-Zong Hu, Xiong-Cao Zhao, Yu-Hua Weng, Chang-Jian Lin Nov 2002

Effect Of Dissolved Oxygen On The Corrosion Behavior Of Coalesced Copper And Stainless Steel-206 In Acetic Solutions, Rong-Zong Hu, Xiong-Cao Zhao, Yu-Hua Weng, Chang-Jian Lin

Journal of Electrochemistry

Linear sweeping technique and dissolving oxygen sensor were used to study the effect of dissolved oxygen and relating factors on the corrosion behavior of coalesced copper and stainless steel-206 in acetic solutions. It was found: 1. The existing of dissolved oxygen is one of the important factors, which strongly influenced the corrosion behavior of coalesced copper and stainless steel-206 in acetic solution. 2. The existing of dissolved oxygen is benefitial to the preventing stainless steel-206 from corrosion in acetic solutions, but damage to the preventing coalesced copper from corrosion. 3. At the high temperature since the dissolved oxygen was escaping …

Go to article

Improvement Of The Low Temperature Electrochemical Performance Of Ab5-Type Hydrogen Storage Alloy, Hui Ye, Zhu Wu, Zhi-Lin Li, Hong Zhang Nov 2002

Improvement Of The Low Temperature Electrochemical Performance Of Ab5-Type Hydrogen Storage Alloy, Hui Ye, Zhu Wu, Zhi-Lin Li, Hong Zhang

Journal of Electrochemistry

Optimizing the rare earth composition and doping with boron have been used to improve the low temperature performance of AB5 hydrogen storage alloy. The results show that Ce-rich alloy with a proper amount of boron is suitable for Ni/MH battery with the lower-limit temperature down to 238 K under smaller current density (≤120 mA/g). The improvement of low temperature performance of hydrogen storage alloy is well consistent with its microstructure, thermodynamic and kinetic properties.

Go to article

Electrochemical Preparation And Reaction Mechanism Of Nanocrystalline Nio, Jia-Shan Gu, Ai-Jie Han, Xing-Fu Zhou, Dao-Bao Chu, Chang-Jian Lin Nov 2002

Electrochemical Preparation And Reaction Mechanism Of Nanocrystalline Nio, Jia-Shan Gu, Ai-Jie Han, Xing-Fu Zhou, Dao-Bao Chu, Chang-Jian Lin

Journal of Electrochemistry

Metallic nickel was electrochemically dissolved in absolute ethanol and acetylacetone mixed solutions and in the presence of Bu4NBr (as an electron-conductive additive). The electrolyte solution containing the precursor was then directly hydrolyzed to obtain nanocrystalline NiO. The precursor was characterized by FTIR, HNMR, Raman spectra and the nano-powder was characterized by XRD and TEM. The results showed that the NiO powder after calcined at 450 ℃ had formed the cubic NaCl structure and the nanocrystalline NiO prepared by this method had narrow size distribution of 10～15 nm. Moreover, the product yield could be improved by controlling temperature below …

Go to article

Steady State Simulation Of Ysz Intermediate-Temperature Fuel Cell, Zi-Jing Lin, Ye Gu, Xiao-Hua Zhang Nov 2002

Steady State Simulation Of Ysz Intermediate-Temperature Fuel Cell, Zi-Jing Lin, Ye Gu, Xiao-Hua Zhang

Journal of Electrochemistry

With a coupled 2D electrochemical and thermal modeling software, the characteristics of the steady state operation of the intermediate-temperature fuel cell with thin yttria-stabilized zirconia(YSZ) electrolyte was analyzed. The parameters of I-V equation were obtained from fitting the experiment results and the choice of grid points was determined by balancing the accuracy requirement and computational efficiency. The temperature fields at different operation circumstances such as flow designs, material choices for interconnect, were examined. The dependences of the output power and cell efficiency on the operating voltage at different temperatures were studied. Based upon the analysis of the temperature profile, it …

Go to article

Mechanistic Study Of Oxidation Of Hypophosphite On Pt Electrodes By Sniftirs, Tai-Xiang Jiang, Hui-Huang Wu Nov 2002

Mechanistic Study Of Oxidation Of Hypophosphite On Pt Electrodes By Sniftirs, Tai-Xiang Jiang, Hui-Huang Wu

Journal of Electrochemistry

The oxidation of hypophosphite on a polycrystalline platinum electrode was studied by SNIFTIRS and cyclic voltammetry, the in-situ IR spectra were analyzed as a function of Pt electrode potentials in the solution of 0.5 mol/L H2SO4+0.1 mol/L NaH2PO2. It was found that the dissociative adsorption of hypophosphite ions occurs on Pt surface, and the oxidation product is H3PO4, rather than H2PO3- which was considered to produce on Ni electrodes, thereby a new insight into mechanism of hypophosphite oxidation on Pt in acidic media was …

Go to article

Studies On The Inhibition Of Yki-05 Corrosion Inhibitor To 907a Steel In Different Immersed Environments, Hui Yu, Jian-Hua Wu, Hong-Ren Wang, Jian-Hua Qian, Guang-Zhang Chen Nov 2002

Studies On The Inhibition Of Yki-05 Corrosion Inhibitor To 907a Steel In Different Immersed Environments, Hui Yu, Jian-Hua Wu, Hong-Ren Wang, Jian-Hua Qian, Guang-Zhang Chen

Journal of Electrochemistry

The inhibition of YKI-05 Corrosion inhibitor in different conditions was studied using potentiodynamic polarization technique. The resuled shown that (i) the inhibitor film layer was formed stably on the surface of 907A steel electrode when it was persistently immersed in static seawater and the inhibition efficiency reached 90% or so. The inhibition mechanism is negative catalytic effect. (ii) the inhibitior film layer was not stable when the electrode was periodically immersed in seawater and was destroyed more significantly with the increase of electrode exposing time. The film was only a covered layer on the surface of electrode and it retarded …

Go to article

Preparation And Performance Of Lifeo2 Coated Nickel Oxide Cathode For Molten Carbonate Fuel Cells, Chun-Ming Wang, Fei Li, Ke-Ao Hu Nov 2002

Preparation And Performance Of Lifeo2 Coated Nickel Oxide Cathode For Molten Carbonate Fuel Cells, Chun-Ming Wang, Fei Li, Ke-Ao Hu

Journal of Electrochemistry

A novel cathode for molten carbonate fuel cells was prepared by coating LiFeO2 over the surface of porous NiO cathode by a simple combustion process. The analytical results of X-ray diffraction (XRD), energy dispersive analysis of X-ray (EDAX), scanning electron microscopy (SEM) and transmission electron microscopy (TEM) indicated that the LiFeO2 coating on the surface of NiO particles consisted of nonometer-sized LiFeO2 grains and sintered tightly with the NiO particles. The LiFeO2 coating dramatically reduced the contacting area of NiO with the carbonate melts, thus the solubility of NiO in the carbonate melts was decreased. Meanwhile, …

Go to article

Electrocatalytic Oxidation Of Formic Acid On Molybdate-Modified Platinum Electrode, Jun-Hua Du, Xue-Hui Xu, Hong Li, Hong-Yu Cheng, Wei-Shan Li Nov 2002

Electrocatalytic Oxidation Of Formic Acid On Molybdate-Modified Platinum Electrode, Jun-Hua Du, Xue-Hui Xu, Hong Li, Hong-Yu Cheng, Wei-Shan Li

Journal of Electrochemistry

The electrochemical behavior of molybdates on a platinum electrode in H2SO4 solutions with different H2SO4 concentrations was studied by cyclic voltammetry and double chronoamperometry. Molybdates were reduced to adsorb hydrogen molybdenum bronzes on the platinum electrode in H2SO4 solutions during cathodically potential sweep. The hydrogen molybdenum bronzes were oxidized to different forms of hydrogen molybdenum bronzes with less hydrogen, depending on the H2SO4 concentration. Platinum electrode was modified by these hydrogen molybdenum bronzes. However, this modified electrode was not stable in H2SO4 solutions. The modified …

Go to article

Manufacture Of 1 Kw Molten Carbonate Fuel Cell Stack, Sheng Sui, Xin-Jian Zhu, Zheng-Yu Fan, Guang-Yi Cao Nov 2002

Manufacture Of 1 Kw Molten Carbonate Fuel Cell Stack, Sheng Sui, Xin-Jian Zhu, Zheng-Yu Fan, Guang-Yi Cao

Journal of Electrochemistry

A molten carbonate fuel cell stack with an active area of 240 mm×140 mm consisted of 30 cells. The gas feed system works via interior manifolds, and the stack placed in a couple of self-chest, coupled with a heater at the bottom and other fours surrounded,to keep uniformity of temperature.Under ambient pressure and 650 ℃, fed with hydrogen and air as anode and cathode gases respectively, the stack gave a current density of 150 mA/cm2 at an average cell voltage of 0.7 V. The peak output of the stack was 1.06 kW during its performance of 300 h.

Go to article

The Cord Weekly (November 27, 2002) Nov 2002

The Cord Weekly (November 27, 2002)

The Cord

No abstract provided.

Go to article

November 27, 2002 Cal Poly Report Digest, Public Affairs Office Nov 2002

November 27, 2002 Cal Poly Report Digest, Public Affairs Office

Cal Poly Report

No abstract provided.

Go to article

Cal Poly Guitar Ensemble To Perform Dec. 4, Public Affairs Office Nov 2002

Cal Poly Guitar Ensemble To Perform Dec. 4, Public Affairs Office

Press Releases

No abstract provided.

Go to article

Spartan Daily, November 26, 2002, San Jose State University, School Of Journalism And Mass Communications Nov 2002

Spartan Daily, November 26, 2002, San Jose State University, School Of Journalism And Mass Communications

Spartan Daily (School of Journalism and Mass Communications)

Volume 119, Issue 63

Go to article

Mustang Daily, November 26, 2002 Nov 2002

Mustang Daily, November 26, 2002

Cal Poly Student Newspaper

Student newspaper of California Polytechnic State University, San Luis Obispo, CA.

Go to article

Iuoe Local 542 V. De River Joint Toll Nov 2002

Iuoe Local 542 V. De River Joint Toll

2002 Decisions

United States District Court for the District of New Jersey

Go to article

Illinois State University Report, November 26, 2002, Illinois State University Nov 2002

Illinois State University Report, November 26, 2002, Illinois State University

Illinois State University Report (1966-2012)

Illinois State University bi-weekly employee newsletter.

Go to article

Cal Poly Guitar Ensemble To Perform Dec. 4, Public Affairs Office Nov 2002

Cal Poly Guitar Ensemble To Perform Dec. 4, Public Affairs Office

Press Releases

No abstract provided.

Go to article

Ud Engineering Students Partner With Industry To Design Low-Cost General Aviation Aircraft Of The Future, University Of Dayton Nov 2002

Ud Engineering Students Partner With Industry To Design Low-Cost General Aviation Aircraft Of The Future, University Of Dayton

News Releases

News release announces that four University of Dayton mechanical engineering students have spent the last six weeks stressing beams of composite materials, constructing computer models and testing designs.

Go to article

The Hilltop 11-26-2002, Hilltop Staff Nov 2002

The Hilltop 11-26-2002, Hilltop Staff

The Hilltop: 2000 - 2010

No abstract provided.

Go to article

Job Prospects Brighter In The Midwest For College Graduates, Best Tips: Show Some Passion, Do Your Homework, University Of Dayton Nov 2002

Job Prospects Brighter In The Midwest For College Graduates, Best Tips: Show Some Passion, Do Your Homework, University Of Dayton

News Releases

News release announces that the Midwest is the only region in the country projecting an increase in college hires this year, according to the National Association of Colleges and Employers' Job Outlook 2003 report.

Go to article

Independent- Nov. 26, 2002, Brian Blaszkowski Nov 2002

Independent- Nov. 26, 2002, Brian Blaszkowski

The Independent (1988-present)

No abstract provided.

Go to article

Faculty Senate Meeting Minutes, 11/26/2002, P 265-267, Unm Faculty Senate Nov 2002

Faculty Senate Meeting Minutes, 11/26/2002, P 265-267, Unm Faculty Senate

Faculty Senate Meeting Minutes, 1920 - 2013

No abstract provided.

Go to article

Faculty Senate Meeting Minutes, 11/26/2002, P 268-331, Unm Faculty Senate Nov 2002

Faculty Senate Meeting Minutes, 11/26/2002, P 268-331, Unm Faculty Senate

Faculty Senate Meeting Minutes, 1920 - 2013

No abstract provided.

Go to article

Mustang Daily, November 25, 2002 Nov 2002

Mustang Daily, November 25, 2002

Cal Poly Student Newspaper

Student newspaper of California Polytechnic State University, San Luis Obispo, CA.

Go to article

The Ticker, November 25, 2002 Nov 2002

The Ticker, November 25, 2002

The Ticker

The Ticker is the student newspaper of Baruch College. It has been published continuously since 1932, when the Baruch College campus was the School of Business and Civic Administration of the City College of New York.

Go to article

Arbiter, November 25, Students Of Boise State University Nov 2002

Arbiter, November 25, Students Of Boise State University

Student Newspapers

No abstract provided.

Go to article

Grand Valley Forum, Volume 027, Number 18, November 25, 2002, Grand Valley State University Nov 2002

Grand Valley Forum, Volume 027, Number 18, November 25, 2002, Grand Valley State University

2002-2003, Volume 27

Grand Valley Forum is Grand Valley State's faculty and staff newsletter, published from 1976 to the present.

Go to article

Spartan Daily, November 25, 2002, San Jose State University, School Of Journalism And Mass Communications Nov 2002

Spartan Daily, November 25, 2002, San Jose State University, School Of Journalism And Mass Communications

Spartan Daily (School of Journalism and Mass Communications)

Volume 119, Issue 62

Go to article

First Prev Next Last