Tellurium-tin based electrodes enabling liquid metal batteries for high specific energy storage applications

被引：67

作者：

Li, Haomiao ^{[1
,2
]}

Wang, Kangli ^{[1
]}

Zhou, Hao ^{[2
]}

Guo, Xiaolin ^{[2
]}

Cheng, Shijie ^{[1
]}

Jiang, Kai ^{[1
,2
]}

机构：

[1] Huazhong Univ Sci & Technol, Sch Elect & Elect Engn, State Key Lab Adv Electromagnet Engn & Technol, Wuhan 430074, Hubei, Peoples R China

[2] Huazhong Univ Sci & Technol, Sch Mat Sci & Engn, State Key Lab Mat Proc & Die & Mould Technol, Wuhan 430074, Hubei, Peoples R China

来源：

ENERGY STORAGE MATERIALS | 2018年 / 14卷

基金：

中国博士后科学基金;

关键词：

Liquid metal batteries; Tellurium-tin alloys; High energy density; High Voltage; LI-TE BATTERIES; THERMODYNAMIC PROPERTIES; POSITIVE ELECTRODE; EMF-MEASUREMENTS; CATHODE; ALLOYS; NANOWIRES;

D O I：

10.1016/j.ensm.2018.04.017

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：

Developing high energy density batteries is of great significance for various energy storage applications. The novel liquid metal batteries (LMBs), with the merits of low-cost and long-lifespan, however deliver relatively low specific energy due to the electromotive force (EMF) limitation of bimetallic electrodes. Metalloid tellurium (Te) is a potentially high voltage electrode candidate for LMB, but challenged by its poor electronic conductivity and high solubility in molten salts. Herein, for the first time, we demonstrate a high voltage LMB with high energy density enabled by metalloid Te alloying with metallic Sn as positive electrode. This Te-Sn alloying strategy dramatically enhances the electronic conductivity of Te based electrodes, and suppresses the solubility of Te in molten salt electrolyte as well. The Li parallel to Te-Sn cells reported herein present the highest discharge voltage of ca. 1.6 V and energy density of 495Wh kg(-1) among all the reported LMBs. These preliminary results broaden the selection of positive electrode materials for LMBs and demonstrate a strategy for developing high energy density batteries for energy storage applications.

引用

页码：267 / 271

页数：5

共 31 条

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