Linking the size of hard carbon particles with electrochemical response in sodium ion storage

Cao，Hailiang1; Meng，Liang1; Qin，Chen1; Han，Zhaohui1; Yang，Liangtao2; Dong，Hailiang1; Hou，Ying1; Xiao，Chuanyang1; Wang，Jun3; Guo，Junjie1

2024-12-30

10.1016/j.apsusc.2024.161126

Applied Surface Science   影响因子和分区

0169-4332

Hard carbon is considered to be one of the most promising anodes for sodium-ion batteries (SIBs) owing to its high capacity and abundant resources. However, the role of particle size on sodium ion storage is unclear, which leads to low capacity and initial coulombic efficiency (ICE) in practical application. In this work, a series of hard carbons with different particle sizes were prepared by an “up to down” strategy using simple grinding and ball-milling method to investigate the effect of particle size on electrochemical response of sodium ion storage. The particle size of hard carbon has negligible effect on initial specific capacity. However, it has a strong effect on the ICE and rate capability. The ICE reduces as the particle size decreases, but the rate performance in reverse. Moreover, impedance analysis and electrochemical kinetics show huge differences for different particle sizes. In-situ Raman technique was also adopted to further illustrate the sodium ion storage mechanism of hard carbon, and an “adsorption-intercalation-pore filling” mechanism is proposed. This work could provide a new perspective for the design of hard carbon materials with suitable structure for efficient sodium ion storage, helping to develop high performance SIBs.

Electrochemical kinetics Hard carbon Particle size Sodium-ion batteries Sodium-ion storage mechanism

SCI ; EI

英语

其他

MATERIALS SCIENCE

2-s2.0-85202978300

Scopus

1.Key Laboratory of Interface Science and Engineering in Advanced Materials,Ministry of Education,College of Materials Science and Engineering,Taiyuan University of Technology,Taiyuan,030024,China
2.Shenzhen Institute of Advanced Technology,Chinese Academy of Sciences,Shenzhen,518055,China
3.Guangdong Provincial Key Laboratory of Energy Materials for Electric Power,School of Innovation and Entrepreneurship,Southern University of Science and Technology,Shenzhen,518055,China

Cao，Hailiang,Meng，Liang,Qin，Chen,et al. Linking the size of hard carbon particles with electrochemical response in sodium ion storage[J]. Applied Surface Science,2024,678.

Cao，Hailiang.,Meng，Liang.,Qin，Chen.,Han，Zhaohui.,Yang，Liangtao.,...&Guo，Junjie.(2024).Linking the size of hard carbon particles with electrochemical response in sodium ion storage.Applied Surface Science,678.

Cao，Hailiang,et al."Linking the size of hard carbon particles with electrochemical response in sodium ion storage".Applied Surface Science 678(2024).