Corrosion and discharge properties of Ca/Ge micro-alloyed Mg anodes for primary aqueous Mg batteries

被引：69

作者：

Deng, Min ^{[1
]}

Wang, Linqian ^{[1
]}

Hoeche, Daniel ^{[1
]}

Lamaka, Sviatlana V. ^{[1
]}

Snihirova, Darya ^{[1
]}

Jiang, Pingli ^{[1
]}

Zheludkevich, Mikhail L. ^{[1
,2
]}

机构：

[1] Helmholtz Zentrum Geesthacht HZG, MagIC Magnesium Innovat Ctr, D-21502 Geesthacht, Germany

[2] Univ Kiel, Fac Engn, Inst Mat Sci, D-24143 Kiel, Germany

来源：

CORROSION SCIENCE | 2020年 / 177卷

关键词：

Magnesium; Galvanostatic; Polarization; Weight loss; Anodic dissolution; METAL-AIR BATTERIES; AL-PB; ELECTROCHEMICAL PERFORMANCE; MAGNESIUM ANODES; PURE MAGNESIUM; BEHAVIOR; CA; MICROSTRUCTURE; MORPHOLOGY; IMPURITY;

D O I：

10.1016/j.corsci.2020.108958

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Ge is evaluated as a micro-alloying element for newly-developed Mg-Ca anodes. The combination of Ca/Ge is effective for suppressing cathodic HER kinetics, resulting in highly negative OCP and a low corrosion rate (0.2 mm y(-1)). For air battery, Mg-0.1 %Ca-0.1 %Ge (wt%) anode exhibits similar voltage to Mg-0.1 %Ca in NaCl solution, but the highly negative OCP enables it with enhanced voltage in salicylate-containing electrolyte (1.7 V at 1 mA cm(-2) versus 1.63 V of Mg-0.1 %Ca). Beside, all micro-alloyed Mg-Ca, Mg-Ge and Mg-Ca-Ge anodes show similar self-discharge rates and high utilization efficiency (similar to 60 % at 10 mA cm(-2)).

引用

页数：15

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