新型炭材料（中英文）2025，Vol.40Issue(5)：1098-1112,15.DOI:10.1016/S1872-5805(25)60983-8
超交联稠环芳烃分子层包覆硬炭微球用于钠离子电池负极材料
Coating super-crosslinked polycyclic aromatic molecules on hard carbon microspheres for a sodium-ion battery anode
摘要
Abstract
Sodium-ion batteries(SIBs)have emerged as a promising contender for next-gener-ation energy storage systems.Hard carbon is re-garded as the most promising anode for commer-cial SIB,however,the large number of defects on its surface cause irreversible electrolyte consump-tion and an uneven solid electrolyte interphase film.An advanced molecular engineering strategy to coat hard carbon with polycyclic aromatic mo-lecules is reported.Specifically,polystyrene-based carbon microspheres(CSs)were first synthesized and then coated with polycyclic aromatic mo- lecules derived from coal tar pitch by spray-drying and followed by oxidation.Compared to the traditional CVD coating meth-od,this molecular framework strategy has been shown to reduce the number of defects on the surface of CSs without sacrifi-cing internal storage sites and suppressing transport kinetics in hosting the sodium ions.Besides the lower surface defect con-centration,the synthesized hybrid carbon microspheres(HCSs)have a larger grain size and more abundant closed pores,and have a higher reversible sodium storage capacity.A HCS-P-60%electrode has a capacity of 332.3 mAh g-1 with an initial Cou-lombic efficiency of 88.5%.It also has a superior rate performance of 246.6 mAh g-1 at 2 C and a 95.2%capacity retention after 100 cycles at 0.2 C.This work offers new insights into designing high-performance hard carbon microsphere anodes,advan-cing the commercialization of sodium-ion batteries.关键词
硬炭/炭微球/煤沥青/钠离子电池/负极Key words
Hard carbon/Carbon microsphere/Coal tar pitch/Sodium-ion battery/Anode分类
化学工程引用本文复制引用
叶永鸿,于星渤,张果丽,李慧慧,关胜琴,王建龙,李开喜,管涛涛..超交联稠环芳烃分子层包覆硬炭微球用于钠离子电池负极材料[J].新型炭材料（中英文）,2025,40(5):1098-1112,15.基金项目
This work was supported by the National Natur-al Science Foundation of China(22408260),the Youth innovation promotion association CAS(2021174),the Natural Science Foundation of Shanxi Province for Young Scholars(20210302124421)and the Key Research and Development Project of Shanxi Province(202102040201002). 国家自然科学基金项目(22408260) （22408260）
中国科学院青年创新促进会项目(2021174) （2021174）
山西省青年自然科学基金项目(20210302124421)和山西省重点研发项目(202102040201002). （20210302124421）
