Novel Charging-Optimized Cathode for a Fast and High-Capacity Zinc-Ion Battery

Li, Zhi1; Wu, Buke3; Yan, Mengyu4; He, Liang1,5; Xu, Lin1; Zhang, Guobin6; Xiong, Tengfei7; Luo, Wen1,2; Mai, Liqiang1

2020-03-04

10.1021/acsami.9b21579

ACS Applied Materials & Interfaces   影响因子和分区

1944-8244

1944-8252

A rechargeable aqueous zinc-ion battery (ZIB) is one of the attractive candidates for large-scale energy storage. Its further application relies on the exploitation of a high-capacity cathode and the understanding of an intrinsic energy storage mechanism. Herein, we report a novel layered K2V3O8 cathode material for the ZIB, adopting a strategy of charging first to extract part of K-ions from vanadate in initial few cycles, which creates more electrochemically active sites and lowers charge-transfer resistance of the ZIB system. As a result, a considerable specific capacity of 302.8 mA h at 0.1 A g(-1), as well as a remarkable cycling stability (92.3% capacity retention at 4 A for 2000 cycles) and good rate capability, are achieved. Besides, the energy storage mechanism was studied by in situ X-ray diffraction, in situ Raman spectroscopy, X-ray photoelectron spectroscopy, and inductively coupled plasma mass spectroscopy. An irreversible K-ion deintercalation in the first charge process is proved. It is believed that this novel cathode material for the rechargeable aqueous ZIB and the optimizing strategy will shed light on developing next-generation large-scale energy storage devices.

zinc-ion battery K2V3O8 in situ X-ray diffraction in situ Raman spectra high performance cathode

EI ; SCI

英语

其他

Programme of Introducing Talents of Discipline to Universities[B17034]

Science & Technology - Other Topics ; Materials Science

Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary

WOS:000518702300034

AMER CHEMICAL SOC

20200908248593

Cathode materials ; Cathodes ; Charge transfer ; Energy storage ; Inductively coupled plasma ; Ions ; Mass spectrometry ; Secondary batteries ; Storage (materials) ; X ray diffraction ; X ray photoelectron spectroscopy ; Zinc

Energy Storage:525.7 ; Zinc and Alloys:546.3 ; Storage:694.4 ; Secondary Batteries:702.1.2 ; Chemistry:801 ; Chemical Reactions:802.2 ; Plasma Physics:932.3

EV Compendex

1.Wuhan Univ Technol, State Key Lab Adv Technol Mat Synth & Proc, Wuhan 430070, Peoples R China
2.Wuhan Univ Technol, Sch Sci, Dept Phys, Wuhan 430070, Peoples R China
3.Southern Univ Sci & Technol, Dept Mech & Energy Engn, Shenzhen 518055, Peoples R China
4.Univ Washington, Dept Mat Sci & Engn, Seattle, WA 98195 USA
5.Rice Univ, Dept Mat Sci & NanoEngn, Houston, TX 77005 USA
6.City Univ Hong Kong, Dept Mat Sci & Engn, Kowloon, Hong Kong 999077, Peoples R China
7.City Univ Hong Kong, Dept Chem, Kowloon, Hong Kong 999077, Peoples R China

Li, Zhi,Wu, Buke,Yan, Mengyu,et al. Novel Charging-Optimized Cathode for a Fast and High-Capacity Zinc-Ion Battery[J]. ACS Applied Materials & Interfaces,2020,12(9):10420-10427.

Li, Zhi.,Wu, Buke.,Yan, Mengyu.,He, Liang.,Xu, Lin.,...&Mai, Liqiang.(2020).Novel Charging-Optimized Cathode for a Fast and High-Capacity Zinc-Ion Battery.ACS Applied Materials & Interfaces,12(9),10420-10427.

Li, Zhi,et al."Novel Charging-Optimized Cathode for a Fast and High-Capacity Zinc-Ion Battery".ACS Applied Materials & Interfaces 12.9(2020):10420-10427.