Journal of Electrochemical Society: Batteries and Energy Storage - Current Issue

Platinum-Alloy Cathode Catalyst Degradation in Proton Exchange Membrane Fuel Cells: Nanometer-Scale Compositional and Morphological Changes

Shuo Chen, Hubert A. Gasteiger, Katsuichiro Hayakawa, Tomoyuki Tada, and Yang Shao-Horn
Electrochemical measurements showed an [approximate]75% Pt surface area loss and an [approximate]40% specific activity loss for a membrane electrode assembly (MEA) cathode with acid-treated PtCo catalyst particles in a H/N proton exchange membrane fuel cell after 24 h voltage cycling between 0.65 a ... [J. Electrochem. Soc. 157, A82 (2009)] published Thu Nov 19, 2009.

Enhanced Stability of LiCoO Cathodes in Lithium-Ion Batteries Using Surface Modification by Atomic Layer Deposition

Yoon Seok Jung, Andrew S. Cavanagh, Anne C. Dillon, Markus D. Groner, Steven M. George et al.
Ultrathin atomic layer deposition (ALD) coatings enhance the performance of lithium-ion batteries (LIBs). Previous studies have demonstrated that LiCoO cathode powders coated with metal oxides with thicknesses of ~100 to 1000 A grown using wet chemical techniques improved LIB performance. In this s ... [J. Electrochem. Soc. 157, A75 (2009)] published Wed Nov 18, 2009.

Application of the N-propyl-N-methyl-pyrrolidinium Bis(fluorosulfonyl)imide RTIL Containing Lithium Bis(fluorosulfonyl)imide in Ionic Liquid Based Lithium Batteries

Anand I. Bhatt, Adam S. Best, Junhua Huang, and Anthony F. Hollenkamp
In seeking to develop ionic liquid based electrolytes for use in lithium metal batteries, we present an investigation of the electrochemical properties of N-propyl-N-methyl-pyrrolidinium bis(fluorosulfonyl)imide and lithium bis(fluorosulfonyl)imide at Ni, Pt, and Li electrodes by cyclic voltammetry, ... [J. Electrochem. Soc. 157, A66 (2009)] published Wed Nov 18, 2009.

Electrochemical Insertion of Li and Na Ions into Nanocrystalline FeO and alpha-FeO for Rechargeable Batteries

Shinichi Komaba, Takashi Mikumo, Naoaki Yabuuchi, Atsushi Ogata, Hiromi Yoshida et al.
FeO powders with different particle sizes on average (400, 100, and 10 nm) were prepared and characterized by X-ray diffraction, transmission electron microscopy, Mossbauer spectroscopy, and electrochemical methods. To examine the electrochemical activity of FeO in relation to the particle size eff ... [J. Electrochem. Soc. 157, A60 (2009)] published Wed Nov 18, 2009.

Enhancing Lithium Storage Capacity of ZnO Anodes Through NiZnC Incorporation

Xudong Tang, Qinmin Pan, and Jia Liu
In this study, lithium storage capacity of ZnO anodes was significantly enhanced by NiZnC incorporation. A core-shell ZnONiZnCC nanocomposite was synthesized through a simple thermal decomposition of Zn/Ni-based organic precursors, and the structural and electrochemical characteristics of the compos ... [J. Electrochem. Soc. 157, A55 (2009)] published Fri Nov 13, 2009.

A Solid-State, Rechargeable, Long Cycle Life LithiumAir Battery

Binod Kumar, Jitendra Kumar, Robert Leese, Joseph P. Fellner, Stanley J. Rodrigues et al.
This paper describes a totally solid-state, rechargeable, long cycle life lithiumoxygen battery cell. The cell is comprised of a Li metal anode, a highly Li-ion conductive solid electrolyte membrane laminate fabricated from glassceramic (GC) and polymerceramic materials, and a solid-state composite ... [J. Electrochem. Soc. 157, A50 (2009)] published Fri Nov 13, 2009.

Electrochemical Characteristics of TiSb and Sb/TiC/C Nanocomposites as Anodes for Rechargeable Li-Ion Batteries

Cheol-Min Park and Hun-Joon Sohn
Intermetallic TiSb and Sb/TiC/C nanocomposites were prepared by alloying and dealloying reactions, respectively, and their potential as anode materials for rechargeable Li-ion batteries was investigated. The Sb/TiC/C nanocomposite was composed of nanocrystalline Sb and TiC, which were distributed un ... [J. Electrochem. Soc. 157, A46 (2009)] published Fri Nov 13, 2009.

Composite Silicon Nanowire Anodes for Secondary Lithium-Ion Cells

Wanli Xu and John C. Flake
A composite anode with active materials including 15% (w/w) silicon nanowires and graphite is demonstrated for use in secondary lithium-ion cells. The electrochemical behavior of the composite anode including voltammetry and charge/discharge capacities over the first 15 cycles is shown and compared ... [J. Electrochem. Soc. 157, A41 (2009)] published Tue Nov 10, 2009.

Preparation and Capacitive Properties of a Carbonaceous Material Containing Nitrogen

Masayuki Kawaguchi, Takeshi Yamanaka, Yoshiki Hayashi, and Hirokazu Oda
Carbonaceous materials containing nitrogen (C/N materials) were prepared by pyrolysis of diaminomaleonitrile (AMN). A C/N material prepared by the pyrolysis of AMN at 1020 K (AMN1020K) had a C/N atomic ratio of 2.0 and a noncrystalline carbonaceous structure with a Brunauer, Emmett, and Teller (BET) ... [J. Electrochem. Soc. 157, A35 (2009)] published Tue Nov 10, 2009.

Positive Effects of E-Beam Irradiation in Inorganic Particle Based Separators for Lithium-Ion Battery

Min Kim, Jun-Young Shon, Young Chang Nho, Tae-Woo Lee, and Jong Hyeok Park
An inorganic separator was prepared by coating inorganic submicrometer sized particles on a nonwoven matrix followed by an E-beam irradiation treatment. Its characteristics were investigated by scanning electron microscopy, tensile strength analysis, thermogravimetric analysis, ionic conductivity me ... [J. Electrochem. Soc. 157, A31 (2009)] published Tue Nov 3, 2009.

Kinetics of Electrochemical Insertion and Extraction of Lithium Ion at SiO

Yuki Yamada, Yasutoshi Iriyama, Takeshi Abe, and Zempachi Ogumi
The kinetics of the electrochemical insertion and extraction of lithium ion at silicon monoxide (SiO) were investigated by ac impedance spectroscopy. The resultant Nyquist plots showed two semicircles at high and middle frequency regions. These two semicircles were attributed to lithium-ion transpor ... [J. Electrochem. Soc. 157, A26 (2009)] published Tue Nov 3, 2009.

Oxidation Resistance of Bare and Pt-Coated Electrically Conducting Diamond Powder as Assessed by Thermogravimetric Analysis

Liang Guo, Vernon M. Swope, Belabbes Merzougui, Lesia Protsailo, Minhua Shao et al.
A corrosion-resistant electrocatalyst support was prepared by overcoating high surface-area diamond powder (36 nm diameter, 250 m/g) with a thin layer of boron-doped ultrananocrystalline diamond (B-UNCD) by microwave plasma-assisted chemical vapor deposition. This core-shell approach produces elec ... [J. Electrochem. Soc. 157, A19 (2009)] published Tue Nov 3, 2009.

Semiempirical Analysis of Time-Dependent Elementary Polarizations in Electrochemical Cells

Hyung-Man Cho, Yong Joon Park, and Heon-Cheol Shin
A systematic semiempirical way to analyze the variation in dc polarization with the operating time of electrochemical energy conversion devices is suggested. This includes the differentiation of the constituents of the total cell impedance, followed by the estimation of the time-dependent elementary ... [J. Electrochem. Soc. 157, A8 (2009)] published Tue Nov 3, 2009.

Study of Capacity Fade of Lithium-Ion Polymer Rechargeable Batteries with Continuous Cycling

P. L. Moss, G. Au, E. J. Plichta, and J. P. Zheng
A cycle life study was done on commercial lithium-ion polymer batteries to quantify contributions to capacity fade with continuous chargedischarge cycling. The cell consists of graphite (meso-carbon microbeads) as an anode material and lithium cobalt oxide (LiCoO) as a cathode material. Analyses wer ... [J. Electrochem. Soc. 157, A1 (2009)] published Tue Nov 3, 2009.