Thermodynamics of Lithium Storage at Abrupt Junctions: Modeling and Experimental Evidence

被引：73

作者：

Fu, Lijun ^{[1
]}

Chen, Chia-Chin ^{[1
]}

Samuelis, Dominik ^{[1
]}

Maier, Joachim ^{[1
]}

机构：

[1] Max Planck Inst Solid State Res, D-70569 Stuttgart, Germany

来源：

PHYSICAL REVIEW LETTERS | 2014年 / 112卷 / 20期

关键词：

LI-STORAGE; BATTERIES; SYSTEMS;

D O I：

10.1103/PhysRevLett.112.208301

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We present the thermodynamic modeling and experimental evidence of the occurrence of lithium storage at abrupt junctions, which describes the transition from an electrostatic capacitor to a chemical capacitor. In both Ru:Li2O and Ni:LiF systems, the functionalities and extracted parameters are in good agreement with the thermodynamic model, based on the dependence of the storage capacity on open-circuit voltage. Moreover, it is set out that a complete understanding of a conventional storage mechanism requires unifying both the space charge and bulk storage for a nanocrystalline electroactive electrode.

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