Electrolyte Based on Easily Synthesized, Low Cost Triphenolate-Borohydride Salt for High Performance Mg(TFSI)2-Glyme Rechargeable Magnesium Batteries

被引：37

作者：

Hebie, Seydou ^{[1
,3
]}

Ngo, Hoang Phuong Khanh ^{[1
,3
]}

Lepretre, Jean-Claude ^{[1
,3
]}

Iojoiu, Cristina ^{[1
,3
]}

Cointeaux, Laure ^{[1
,3
]}

Berthelot, Romain ^{[2
,3
]}

Alloin, Fannie ^{[1
,3
]}

机构：

[1] Univ Grenoble Alpes, CNRS, Grenoble INP, LEPMI, F-38000 Grenoble, France

[2] Univ Montpellier, Equipe Agregats Interfaces Mat Energie AIME, CNRS, UMR 5253,ICGM, 2 Pl Eugene Bataillon CC1502, F-34095 Montpellier 5, France

[3] CNRS, FR3459, RS2E, 33 Rue St Leu, F-80039 Amiens, France

来源：

ACS APPLIED MATERIALS & INTERFACES | 2017年 / 9卷 / 34期

关键词：

magnesium; borohydrides salt; Mg(TFSI)(2); noncorrosive electrolyte; rechargeable batteries; WIDE ELECTROCHEMICAL WINDOWS; IONIC LIQUIDS; COORDINATION; CHLORIDE;

D O I：

10.1021/acsami.7b06022

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

A new class of electrolyte based on TFSI- and triphenolate-borohydride anions was designed and produced which fulfill all requirements of easy synthesis, high ionic conductivity, wide potential window, and noncorrosion of Al current collector. The electrolyte composed of magnesium triphenolate borohydride and Mg(TFSI)(2) in glyme simultaneously displays a high conductivity of 5.5 mS cm(-1) at 25 degrees C and a reversible Mg plating/stripping with high current density and Coulombic efficiency at room temperature. By addition of a slight amount of MgCl2 to this electrolyte, a Coulombic efficiency of 90% in an SS/Mg cell, stable cycling performance, and a wide anodic potential of 3.4 V vs Mg2+/Mg on Al current collector can be reached. Reversible and efficient Mg insertion/deinsertion with a high capacity of 94 mAh g(-1) and 96% Coulombic efficiency was obtained in a Mo6S8 Chevrel cathode phase.

引用

页码：28377 / 28385

页数：9

共 32 条

[1] Prototype systems for rechargeable magnesium batteries [J].