Influence of kinetics of hydrogen transport in a metal hydride anode on the discharge properties of the Ni-MH batteries

被引：4
|
作者：
Gabis, I. E. [1 ]
Chernov, I. A. [2 ]
Dobrotvorskiy, M. A. [1 ]
Kuznetsov, V. G. [1 ]
Voyt, A. P. [1 ]
Tarasov, B. P. [3 ]
Yafyasov, A. M. [1 ]
机构：
[1] St Petersburg State Univ, St Petersburg 198504, Russia
[2] Petrozavodsk State Univ, Inst Appl Math Res RAS, Petrozavodsk 185910, Russia
[3] Russian AS, Inst Problems Chem Phys, Chernologovka, Russia
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2015年 / 629卷
关键词：
Metal hydride battery; Metal hydride anode; Shrinking core model; Hydrogen diffusion; Dehydriding kinetics; ELECTROCHEMICAL PROPERTIES; MATHEMATICAL-MODEL; FUEL-CELLS; ELECTRODE; ALLOYS; DESORPTION; LA2MGNI9; BEHAVIOR;
D O I：
10.1016/j.jallcom.2014.12.111
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
We present a distributed mathematical model and fit discharge curves of Ni-MH anode made of new alloy La2MgNi9. Conditions justified the single-particle approximation with the shrinking core morphology of the hydride phase. We used the connection between voltage on the MH electrode and hydrogen concentration in the solid solution near the electrolyte facing surface. This connection is based on shift of the Fermi energy of the metal due to hydrogen dissolution. The model takes hydrogen diffusion and free phase boundary into account. It can be built into more general models describing discharge of Ni-MH rechargeable batteries. (C) 2015 Elsevier B.V. All rights reserved.
引用
收藏
页码：242 / 246
页数：5
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