Self-discharge mitigation in a liquid metal displacement battery

被引：0

作者：

Mushtaq, Kashif ^{[1
,2
,3
]}

Zhao, Ji ^{[1
]}

Weber, Norbert ^{[1
,4
]}

Mendes, Adelio ^{[2
]}

Sadoway, Donald R. ^{[1
]}

机构：

[1] Department of Materials Science and Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge,MA,02139-4307, United States

[2] LEPABE - Laboratory for Process Engineering, Environment, Biotechnology and Energy, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, Porto,4200-465, Portugal

[3] Department of Mechanical Engineering, School of Mechanical and Manufacturing Engineering, National University of Sciences and Technology, Islamabad,H-12, Pakistan

[4] Helmholtz-Zentrum Dresden-Rossendorf, Bautzner Landstr. 400, Dresden,01328, Germany

来源：

Journal of Energy Chemistry | 2022年 / 66卷

关键词：

Electrolyte additives - Faradaic membrane - High temperature battery - Liquid displacement battery - Liquid displacements - Liquid metal battery - Metal electrodes - Molten salt electrolytes - Self-discharges - ZEBRA battery;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

Recently, a disruptive idea was reported about the discovery of a new type of battery named Liquid Displacement Battery (LDB) comprising liquid metal electrodes and molten salt electrolyte. This cell featured a novel concept of a porous electronically conductive faradaic membrane instead of the traditional ion-selective ceramic membrane. LDBs are attractive for stationary storage applications but need mitigation against self-discharge. In the instant battery chemistry, Li|LiCl-PbCl2|Pb, reducing the diffusion coefficient of lead ions can be a way forward and a solution can be the addition of PbO to the electrolyte. The latter acts as a supplementary barrier and complements the function of the faradaic membrane. The remedial actions improved the cell's coulombic efficiency from 92% to 97% without affecting the voltage efficiency. In addition, the limiting current density of a 500 mAh cell increased from 575 to 831 mA cm−2 and the limiting power from 2.53 to 3.66 W. Finally, the effect of PbO on the impedance and polarization of the cell was also studied. © 2021 Science Press

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页码：390 / 396