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

	Reversible calcium alloying enables a practical room-temperature rechargeable calcium-ion battery with a high discharge voltage
	Meng Wang; Chunlei Jiang; Songquan Zhang; Xiaohe Song; Yongbing Tang; Hui-Ming Cheng
刊名	Nature Chemistry
	2018
文献子类	期刊论文
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.
URL标识	查看原文
语种	英语
内容类型	期刊论文
源URL	[http://ir.siat.ac.cn:8080/handle/172644/13539]
专题	深圳先进技术研究院_集成所
推荐引用方式 GB/T 7714	Meng Wang,Chunlei Jiang,Songquan Zhang,et al. Reversible calcium alloying enables a practical room-temperature rechargeable calcium-ion battery with a high discharge voltage[J]. Nature Chemistry,2018.
APA	Meng Wang,Chunlei Jiang,Songquan Zhang,Xiaohe Song,Yongbing Tang,&Hui-Ming Cheng.(2018).Reversible calcium alloying enables a practical room-temperature rechargeable calcium-ion battery with a high discharge voltage.Nature Chemistry.
MLA	Meng Wang,et al."Reversible calcium alloying enables a practical room-temperature rechargeable calcium-ion battery with a high discharge voltage".Nature Chemistry (2018).