Reversible calcium alloying enables a practical room-temperature rechargeable calcium-ion battery with a high discharge voltage

doi:10.1038/s41557-018-0045-4

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	Reversible calcium alloying enables a practical room-temperature rechargeable calcium-ion battery with a high discharge voltage
	Wang, M ; Jiang, CL ; Zhang, SQ ; Song, XH ; Tang, YB ; Cheng, HM
刊名	NATURE CHEMISTRY
	2018-06-01
卷号	10 期号:6 页码:667-672
ISSN号	1755-4330
DOI	10.1038/s41557-018-0045-4
英文摘要	Calcium-ion batteries (CIBs) are attractive candidates for energy storage because Ca2+ has low polarization and a reduction potential (-2.87 V versus standard hydrogen electrode, SHE) close to that of Li+ (-3.04 V versus SHE), promising a wide voltage window for a full battery. However, their development is limited by difficulties such as the lack of proper cathode/anode materials for reversible Ca2+ intercalation/de-intercalation, low working voltages (<2 V), low cycling stability, and especially poor room-temperature performance. Here, we report a CIB that can work stably at room temperature in a new cell configuration using graphite as the cathode and tin foils as the anode as well as the current collector. This CIB operates on a highly reversible electrochemical reaction that combines hexafluorophosphate intercalation/de-intercalation at the cathode and a Ca-involved alloying/de-alloying reaction at the anode. An optimized CIB exhibits a working voltage of up to 4.45 V with capacity retention of 95% after 350 cycles.
学科主题	Chemistry, Multidisciplinary
语种	英语
WOS记录号	WOS:000432991800015
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/80178]
专题	金属研究所_中国科学院金属研究所
作者单位	1.Chinese Acad Sci, Shenzhen Inst Adv Technol, Funct Thin Films Res Ctr, Shenzhen, Peoples R China 2.Tsinghua Univ, Tsinghua Berkeley Shenzhen Inst, Shenzhen, Peoples R China 3.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang, Liaoning, Peoples R China
推荐引用方式 GB/T 7714	Wang, M,Jiang, CL,Zhang, SQ,et al. Reversible calcium alloying enables a practical room-temperature rechargeable calcium-ion battery with a high discharge voltage[J]. NATURE CHEMISTRY,2018,10(6):667-672.
APA	Wang, M,Jiang, CL,Zhang, SQ,Song, XH,Tang, YB,&Cheng, HM.(2018).Reversible calcium alloying enables a practical room-temperature rechargeable calcium-ion battery with a high discharge voltage.NATURE CHEMISTRY,10(6),667-672.
MLA	Wang, M,et al."Reversible calcium alloying enables a practical room-temperature rechargeable calcium-ion battery with a high discharge voltage".NATURE CHEMISTRY 10.6(2018):667-672.