期刊
JOURNAL OF POWER SOURCES
卷 231, 期 -, 页码 219-225出版社
ELSEVIER
DOI: 10.1016/j.jpowsour.2013.01.012
关键词
Primary battery; Lithium battery; Implantable cardiac defibrillator; Solubility; Dissolution
资金
- National Institutes of Health from National Heart, Lung, and Blood Institute [1R01HL093044-01A1]
- Department of Energy, Office of Basic Energy Sciences, Division of Materials Science [DE-SC0002460]
Silver vanadium oxide (Ag2V4O11, SVO) has enjoyed widespread commercial success over the past 30 years as a cathode material for implantable cardiac defibrillator (ICD) batteries. Recently, silver vanadium phosphorous oxide (Ag2VO2PO4, SVPO) has been studied as possibly combining the desirable thermal stability aspects of LiFePO4 with the electrical conductivity of SVO. Further, due to the noted insoluble nature of most phosphate salts, a lower material solubility of SVPO relative to SVO is anticipated. Thus, the first vanadium dissolution studies of SVPO in battery electrolyte solutions are described herein. The equilibrium solubility of SVPO was similar to 5 times less than SVO, with a rate constant of dissolution similar to 3.5 times less than that of SVO. The vanadium dissolution in SVO and SVPO can be adequately described with a diffusion-layer model, as supported by the Noyes-Whitney equation. Cells prepared with vanadium-treated anodes displayed higher AC impedance and DC resistance relative to control anodes. These data support the premise that SVPO cells are likely to exhibit reduced cathode solubility and thus are less affected by increased cell resistance due to cathode solubility compared to SVO based cells. (C) 2013 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据