Potassium vanadates with stable structure and fast ion diffusion channel as cathode for rechargeable aqueous zinc-ion batteries

doi:10.1016/j.nanoen.2018.07.014

	Potassium vanadates with stable structure and fast ion diffusion channel as cathode for rechargeable aqueous zinc-ion batteries
	Tang, Boya ; Fang, Guozhao ; Zhou, Jiang ; Wang, Liangbing ; Lei, Yongpeng 1,2; Wang, Chao 3; Lin, Tianquan 3,4; Tang, Yan ; Liang, Shuquan
刊名	NANO ENERGY
	2018
卷号	51 页码:579
关键词	Aqueous zinc-ion battery Zinc storage mechanism Potassium vanadates Tunnel structure Diffusion coefficient
ISSN号	2211-2855
DOI	10.1016/j.nanoen.2018.07.014
英文摘要	Rechargeable aqueous zinc-ion batteries (ZIBs) are feasible for grid-scale applications due to their unique attributes such as safe, sustainable, and low-cost. However, it is limited by cathode materials, which requires a stable host structure and fast channel for zinc ions diffusion. Here, we develop various kinds of potassium vanadates (K2V8O21, K0.25V2O5, K2V6O16 center dot 1.57H(2)O and KV3O8) as cathodes for aqueous ZIBs. K2V8O21 and K0.25V2O5 with tunnel structure can maintain a stable structure and are conducive to the faster zinc ion diffusion during repeated cycles compared to the layered KV3O8 and K2V6O16 center dot 1.57H(2)O that suffer from structural collapse. The optimal K2V8O21 cathode exhibits excellent zinc storage performance, with a high capacity of 247 mA h g(-1) at 0.3 A g(-1) and a good rate at 6 A g(-1) as well as excellent cyclic stability up to 300 cycles. The results suggest K2V8O21 is a very promising cathode for aqueous ZIBs, which could be extended to construct other high-performance cathode materials with a similar crystal structure (e.g. beta-Na0.33V2O5, Li0.3V2O5, Ag0.33V2O5, etc.) for zinc storage.
学科主题	Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000440682100064
资助机构	This work was supported by National Natural Science Foundation of China (Grant no. 51374255 and 51572299), Innovation-Driven Project of Central South University (No. 2018CX004), and Hunan Provincial Innovation Foundation for Postgraduate (Grant no. CX2017B045). ; This work was supported by National Natural Science Foundation of China (Grant no. 51374255 and 51572299), Innovation-Driven Project of Central South University (No. 2018CX004), and Hunan Provincial Innovation Foundation for Postgraduate (Grant no. CX2017B045).
内容类型	期刊论文
源URL	[http://ir.sic.ac.cn/handle/331005/24695]
专题	中国科学院上海硅酸盐研究所
作者单位	1.Cent S Univ, Sch Mat Sci & Engn, Changsha 410083, Hunan, Peoples R China 2.Cent S Univ, State Key Lab Powder Met, Changsha 410083, Hunan, Peoples R China 3.Cent S Univ, Sch Aeronaut & Astronaut, Changsha 410083, Hunan, Peoples R China 4.MIT, Dept Nucl Sci & Engn, 77 Massachusetts Ave, Cambridge, MA 02139 USA 5.Chinese Acad Sci, Shanghai Inst Ceram, State Key Lab High Performance Ceram & Superfine, Shanghai 200050, Peoples R China
推荐引用方式 GB/T 7714	Tang, Boya,Fang, Guozhao,Zhou, Jiang,et al. Potassium vanadates with stable structure and fast ion diffusion channel as cathode for rechargeable aqueous zinc-ion batteries[J]. NANO ENERGY,2018,51:579, 587.
APA	Tang, Boya.,Fang, Guozhao.,Zhou, Jiang.,Wang, Liangbing.,Lei, Yongpeng.,...&Liang, Shuquan.(2018).Potassium vanadates with stable structure and fast ion diffusion channel as cathode for rechargeable aqueous zinc-ion batteries.NANO ENERGY,51,579.
MLA	Tang, Boya,et al."Potassium vanadates with stable structure and fast ion diffusion channel as cathode for rechargeable aqueous zinc-ion batteries".NANO ENERGY 51(2018):579.