Suppressing Continuous Volume Expansion of Si Nanoparticles by an Artificial Solid Electrolyte Interphase for High-Performance Lithium-Ion Batteries

Li，Yingzhi1; Lu，Jiming1; Wang，Zhenyu1; Wang，Xuyang1; Yuan，Huimin1; Qin，Ning1; Yi，Zhibin1; Chen，Zhenhua2; Gu，Shuai1; Lu，Zhouguang1

2021

10.1021/acssuschemeng.0c08964

ACS Sustainable Chemistry & Engineering   影响因子和分区

2168-0485

2168-0485

The cyclic stability of Si anodes is still a great challenge for high-performance lithium-ion batteries due to the huge volume change. In this work, the continuous volume expansion of the Si anode and individual nanoparticles during cycling is deeply investigated by various visualization observations, and it is effectively suppressed by an artificial solid electrolyte interphase (SEI) consisting of inner polydopamine and outer natural SEI. Visualization characterization unveils the mechanism of action of the artificial SEI in Si nanoparticles. Specifically, repeated plastic deformation causes the transformation from amorphous Si into clusters accompanied by interstitial space, which induces continuous volume expansion, and the high-modulus artificial SEI accommodates plastic deformation of Si clusters during cycling, holding the structural integrity of Si nanoparticles. The anode of Si nanoparticles anchored on expanded graphite with such artificial SEI achieves its theoretical specific capacity and maintains a discharge capacity close to 80% of the maximum (983 mAh g-1), with little fading after 500 cycles. This work not only expands upon the understanding of plastic deformation and SEI but also provides some valuable information for the rational design of Si-based active materials.

Artificial solid electrolyte interphase Continuous volume expansion Lithium-ion batteries Plastic deformation Young's modulus

SCI ; EI

英语

第一 ; 通讯

Basic Research Project of the Science and Technology Innovation Commission of Shenzhen[JCYJ20170412153139454] ; National Natural Science Foundation of China[21875097,21671096] ; Guangdong Innovative and Entrepreneurial Research Team Program[2016ZT06G587] ; Special Funds for the Cultivation of Guangdong College Students' Scientifific and Technological Innovation ("Climbing Program" Special Funds)[pdjh2020c0011] ; National Innovation and Entrepreneurship Training Program for College Students[S201914325023] ; Shanghai Natural Science Foundation[19ZR1463300]

Chemistry ; Science & Technology - Other Topics ; Engineering

Chemistry, Multidisciplinary ; Green & Sustainable Science & Technology ; Engineering, Chemical

WOS:000664614900005

AMER CHEMICAL SOC

20212610561614

Amorphous silicon ; Anodes ; Expansion ; Nanoparticles ; Plastic deformation ; Silicon ; Solid electrolytes ; Solid-State Batteries ; Visualization

Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals:549.3 ; Electron Tubes:714.1 ; Nanotechnology:761 ; Chemical Agents and Basic Industrial Chemicals:803 ; Solid State Physics:933 ; Materials Science:951

2-s2.0-85108562650

Scopus

1.Department of Materials Science and Engineering,Southern University of Science and Technology,Shenzhen,1088 Xueyuan Avenue, Nanshan District,518055,China
2.Shanghai Synchrotron Radiation Facility (SSRF),Shanghai Advanced Research Institute,Chinese Academy of Sciences,Shanghai,239 Zhangheng Road, Pudong New District,201800,China

Li，Yingzhi,Lu，Jiming,Wang，Zhenyu,et al. Suppressing Continuous Volume Expansion of Si Nanoparticles by an Artificial Solid Electrolyte Interphase for High-Performance Lithium-Ion Batteries[J]. ACS Sustainable Chemistry & Engineering,2021,9(24):8059-8068.

Li，Yingzhi.,Lu，Jiming.,Wang，Zhenyu.,Wang，Xuyang.,Yuan，Huimin.,...&Lu，Zhouguang.(2021).Suppressing Continuous Volume Expansion of Si Nanoparticles by an Artificial Solid Electrolyte Interphase for High-Performance Lithium-Ion Batteries.ACS Sustainable Chemistry & Engineering,9(24),8059-8068.

Li，Yingzhi,et al."Suppressing Continuous Volume Expansion of Si Nanoparticles by an Artificial Solid Electrolyte Interphase for High-Performance Lithium-Ion Batteries".ACS Sustainable Chemistry & Engineering 9.24(2021):8059-8068.