A new family of cation-disordered Zn(Cu)-Si-P compounds as high-performance anodes for next-generation Li-ion batteries

Li, Wenwu1,2; Li, Xinwei3; Liao, Jun1; Zhao, Bote2; Zhang, Lei2; Huang, Le1; Liu, Guoping1; Guo, Zaiping4; Liu, Meilin2

2019-07

10.1039/c9ee00953a

Energy & Environmental Science   影响因子和分区

1754-5692

1754-5706

The development of low-cost, high-performance anode materials for Li-ion batteries (LIBs) is imperative to meet the ever-increasing demands for advanced power sources. Here we report our findings on the design, synthesis, and characterization of a new cation-disordered ZnSiP2 anode. When tested in LIBs, the disordered phase of ZnSiP2 demonstrates faster reaction kinetics and higher energy efficiency than the cation-ordered phase of ZnSiP2. The superior performance is attributed to the greater electronic and ionic conductivity and better tolerance against volume variation during cycling, as confirmed by theoretical calculations and experimental measurements. Moreover, the cation-disordered ZnSiP2/C composite exhibits excellent cycle stability and superior rate capability. The performance surpasses all reported multi-phase anodes studied. Further, a number of the cation-disordered phases in the Zn(Cu)-Si-P family with a wide range of cation ratios show similar performance, achieving large specific capacities and high first-cycle coulombic efficiency while maintaining desirable working potentials for enhanced safety.

SCI ; EI

英语

通讯

National Energy Research Scientific Computing Center (NERSC), a U.S. Department of Energy Office of Science User Facility[DE-AC02-05CH11231]

Chemistry ; Energy & Fuels ; Engineering ; Environmental Sciences & Ecology

Chemistry, Multidisciplinary ; Energy & Fuels ; Engineering, Chemical ; Environmental Sciences

WOS:000477950000014

ROYAL SOC CHEMISTRY

20192907208667

Anodes ; Copper compounds ; Energy efficiency ; Lithium-ion batteries ; Positive ions ; Reaction kinetics ; Silicon compounds ; Zinc compounds

Energy Conservation:525.2 ; Electron Tubes:714.1 ; Chemical Reactions:802.2

Web of Science

1.Guangdong Univ Technol, Sch Mat & Energy, Guangzhou 51006, 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,Li, Xinwei,Liao, Jun,et al. A new family of cation-disordered Zn(Cu)-Si-P compounds as high-performance anodes for next-generation Li-ion batteries[J]. Energy & Environmental Science,2019,12(7):2286-2297.

Li, Wenwu.,Li, Xinwei.,Liao, Jun.,Zhao, Bote.,Zhang, Lei.,...&Liu, Meilin.(2019).A new family of cation-disordered Zn(Cu)-Si-P compounds as high-performance anodes for next-generation Li-ion batteries.Energy & Environmental Science,12(7),2286-2297.

Li, Wenwu,et al."A new family of cation-disordered Zn(Cu)-Si-P compounds as high-performance anodes for next-generation Li-ion batteries".Energy & Environmental Science 12.7(2019):2286-2297.