First investigation of indium-based electrode in Mg battery

被引：71

作者：

Murgia, Fabrizio ^{[1
,2
]}

Weldekidan, Ephrem Terefe ^{[1
]}

Stievano, Lorenzo ^{[1
,2
]}

Monconduit, Laure ^{[1
,2
]}

Berthelot, Romain ^{[1
,2
]}

机构：

[1] Univ Montpellier, Equipe Agregats Interfaces Mat Energie AIME, Inst Charles Gerhardt Montpellier, UMR 5253,CNRS, F-34095 Montpellier 5, France

[2] CNRS, FR 3459, Reseau Stockage Electrochim Energie RS2E, F-80039 Amiens, France

来源：

ELECTROCHEMISTRY COMMUNICATIONS | 2015年 / 60卷

关键词：

Magnesium battery; Negative electrode material; Electrochemical alloying; Operando x-ray diffraction; Ball milling; X-RAY; MAGNESIUM; ELECTROCHEMISTRY; SYSTEMS; LITHIUM;

D O I：

10.1016/j.elecom.2015.08.007

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Micrometric indium powder was investigated for the first time as active material for Mg battery negative electrodes using Mg-organohaloaluminate electrolyte. Indium electrochemically alloys with Mg to form the intermetallic compound MgIn. The alloying reaction is highly reversible. At low cycling rate, a high capacity of 425 mAh g(-1) is achieved, with the lowest alloying potential ever reported vs. Mg. The investigation of the electrochemical mechanism by operando x-ray diffraction confirmed a biphasic transition from In to MgIn inagreement with the Mg-In phase diagram, and without any intermediate amorphization process. High and stable capacity is observed by cycling at low rates, whereas rate-capability tests evidenced a rapid fading upon high current densities. Micrometric intermetallic MgIn directly synthesized by high-energy ball milling was also investigated and exhibited similar electrochemical behavior. These results confirm the interest of p-block elements as possible negative electrode materials for Mg batteries. (C) 2015 Elsevier B.V. All rights reserved.

引用

页码：56 / 59

页数：4

共 33 条

[1] Electrodeposited Bi, Sb and Bi1-xSbx alloys as anodes for Mg-ion batteries [J].