Evaluation of Li-Mg-B Alloy Anode for Intermediate Temperature Lithium Batteries

Abstract:

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A ternary Li-Mg-B alloy (64%Li, 4%Mg and 32%B, all compositions are reported as weight percent in this paper) foil was prepared and its phase structure and discharge behavior were investigated. The main phases existing in the alloy included Li5B4, Li3Mg7, LiB and Li. Coupled with LiNO3-KNO3 eutectic electrolyte and MnO2 cathode, the anode exhibited great potential in the intermediate temperature lithium batteries. At temperatures above 200°C, two steady voltage plateaus were obtained at near 3V and 2.7V, and the cell displayed an open-circuit voltage exceeding 3.2V. The experimentally measured capacity of the Li-Mg-B alloy was 5427C·g-1 at 200°C, which was higher than that of LiB alloy (70%Li). Adding magnesium to LiB alloy could lower the cost of anodes without capacity loss.

Info:

Periodical:

Advanced Materials Research (Volumes 287-290)

Edited by:

Jinglong Bu, Pengcheng Wang, Liqun Ai, Xiaoming Sang, Yungang Li

Pages:

1553-1558

DOI:

10.4028/www.scientific.net/AMR.287-290.1553

Citation:

Z. J. Wang et al., "Evaluation of Li-Mg-B Alloy Anode for Intermediate Temperature Lithium Batteries", Advanced Materials Research, Vols. 287-290, pp. 1553-1558, 2011

Online since:

July 2011

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$35.00

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