Zn(Cu)Si2+xP3 Solid Solution Anodes for High-Performance Li-Ion Batteries with Tunable Working Potentials

Li, Wenwu1,2; Liao, Jun1; Li, Xinwei3; Zhang, Lei2; Zhao, Bote2; Chen, Yu2; Zhou, Yucun2; Cuo, Zaiping4; Liu, Meilin2

2019-08

10.1002/adfm.201903638

ADVANCED FUNCTIONAL MATERIALS   影响因子和分区

1616-301X

1616-3028

Si-based anodes with a stiff diamond structure usually suffer from sluggish lithiation/delithiation reaction due to low Li-ion and electronic conductivity. Here, a novel ternary compound ZnSi2P3 with a cation-disordered sphalerite structure, prepared by a facile mechanochemical method, is reported, demonstrating faster Li-ion and electron transport and greater tolerance to volume change during cycling than the existing Si-based anodes. A composite electrode consisting of ZnSi2P3 and carbon achieves a high initial Coulombic efficiency (92%) and excellent rate capability (950 mAh g(-1) at 10 A g(-1)) while maintaining superior cycling stability (1955 mAh g(-1) after 500 cycles at 300 mA g(-1)), surpassing the performance of most Si- and P-based anodes ever reported. The remarkable electrochemical performance is attributed to the sphalerite structure that allows fast ion and electron transport and the reversible Li-storage mechanism involving intercalation and conversion reactions. Moreover, the cation-disordered sphalerite structure is flexible to ionic substitutions, allowing extension to a family of Zn(Cu)Si2+xP3 solid solution anodes (x = 0, 2, 5, 10) with large capacity, high initial Coulombic efficiency, and tunable working potentials, representing attractive anode candidates for next-generation, high-performance, and low-cost Li-ion batteries.

anode cation disordered Li-ion batteries Si based solid solution

SCI ; EI

英语

NI期刊

通讯

Georgia Institute of Technology[] ; Guangdong University of Technology[] ; Southern University of Science and Technology[] ; [2016KQNCX038] ; Guangzhou Municipal Science and Technology Project[201804010392] ; [DMR-1742828] ; Natural Science Foundation of Guangdong Province[] ; [DE-AC02-05CH11231] ; China Postdoctoral Science Foundation[1112000139] ; [2017A030310241] ; National Natural Science Foundation of China[51801096] ; Guangdong Innovative and Entrepreneurial Research Team Program[2014ZT05N200]

Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics

Chemistry, Multidisciplinary ; Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter

WOS:000481931200008

WILEY-V C H VERLAG GMBH

20192507078356

Anodes ; Copper compounds ; Efficiency ; Electron transport properties ; Lithium-ion batteries ; Positive ions ; Silicon compounds ; Solid solutions ; Zinc compounds ; Zinc sulfide

Electron Tubes:714.1 ; Inorganic Compounds:804.2 ; Production Engineering:913.1 ; Solid State Physics:933

MATERIALS SCIENCE

Web of Science

1.Guangdong Univ Technol, Sch Mat & Energy, Guangzhou 510006, Guangdong, Peoples R China
2.Georgia Inst Technol, Sch Mat Sci & Engn, Atlanta, GA 30332 USA
3.Southern Univ Sci & Technol, Dept Mech & Energy Engn, Shenzhen 518071, Peoples R China
4.Univ Wollongong, Sch Mech Mat & Mechatron Engn, Inst Superconducting & Elect Mat, North Wollongong, NSW 2500, Australia

Li, Wenwu,Liao, Jun,Li, Xinwei,et al. Zn(Cu)Si2+xP3 Solid Solution Anodes for High-Performance Li-Ion Batteries with Tunable Working Potentials[J]. ADVANCED FUNCTIONAL MATERIALS,2019,29(34).

Li, Wenwu.,Liao, Jun.,Li, Xinwei.,Zhang, Lei.,Zhao, Bote.,...&Liu, Meilin.(2019).Zn(Cu)Si2+xP3 Solid Solution Anodes for High-Performance Li-Ion Batteries with Tunable Working Potentials.ADVANCED FUNCTIONAL MATERIALS,29(34).

Li, Wenwu,et al."Zn(Cu)Si2+xP3 Solid Solution Anodes for High-Performance Li-Ion Batteries with Tunable Working Potentials".ADVANCED FUNCTIONAL MATERIALS 29.34(2019).