A Kinetics and Equilibrium Study of Vanadium Dissolution from Vanadium Oxides and Phosphates in Battery Electrolytes: Possible Impacts on ICD Battery Performance.
A Kinetics and Equilibrium Study of Vanadium Dissolution from Vanadium Oxides and Phosphates in Battery Electrolytes: Possible Impacts on ICD Battery Performance.
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DOI：
10.1016/j.jpowsour.2013.01.012
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发表时间：
2013-06-01
影响因子：
9.2
通讯作者：
Takeuchi, Esther S.
中科院分区：
文献类型：
--
作者：
Bock, David C.;Marschilok, Amy C.;Takeuchi, Kenneth J.;Takeuchi, Esther S.
银钒氧化物（Ag 2 V4 O 11，SVO）在过去30年中作为植入式心脏除颤器（ICD）电池的阴极材料获得了广泛的商业成功。最近，已经研究了银钒磷氧化物（Ag 2 VO 2 PO 4，SVPO），因为其可能将LiFePO 4的期望的热稳定性方面与SVO的导电性结合。此外，由于大多数磷酸盐的不溶性，预计SVPO相对于SVO的材料溶解度较低。因此，本文描述了SVPO在电池电解质溶液中的第一钒溶解研究。SVPO的平衡溶解度比SVO小约5倍，溶解速率常数比SVO小约3.5倍。钒在SVO和SVPO中的溶解可以用扩散层模型来描述，并得到Noyes-Whitney方程的支持。用钒处理的阳极制备的电池相对于对照阳极显示出更高的AC阻抗和DC电阻。这些数据支持这样的前提，即与基于SVO的电池相比，SVPO电池可能表现出降低的阴极溶解度，因此较少受到由于阴极溶解度而增加的电池电阻的影响。
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 ~5 times less than SVO, with a rate constant of dissolution ~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 less affected by increased cell resistance due to cathode solubility compared to SVO based cells.
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影响因子：
9.2
作者：
Kim, Young Jin;Lee, Chia-Ying;Marschilok, Amy C.;Takeuchi, Kenneth J.;Takeuchi, Esther S.
通讯作者：
Takeuchi, Esther S.
影响因子：
3.9
作者：
Choi, W.;Manthiram, A.
通讯作者：
Manthiram, A.
影响因子：
--
作者：
Kim, Dong-Han;Kim, Jaekook
通讯作者：
Kim, Jaekook
影响因子：
--
作者：
Koltypin, Maxim;Aurbach, Doron;Ellis, Brian
通讯作者：
Ellis, Brian
影响因子：
3.2
作者：
Amatucci, GG;Tarascon, JM;Klein, LC
通讯作者：
Klein, LC