电化学（中英文）2025，Vol.31Issue(8)：34-43,10.DOI:10.61558/2993-074X.3569
生物质基碳负极结构调控工程实现高倍率双离子电池
Structure Regulation Engineering for Biomass-Derived Carbon Anodes Enabling High-Rate Dual-Ion Batteries
摘要
Abstract
Dual-ion batteries(DIBs)usually use carbon-based materials as electrodes,showing advantages in high operating volt-age,potential low cost,and environmental friendliness.Different from conventional"rocking chair"type secondary batter-ies,DIBs perform a unique working mechanism,which employ both cation and anion taking part in capacity contribution at an anode and a cathode,respectively,during electrochemical reactions.Graphite has been identified as a suitable cathode material for anion intercalation at high voltages(>4.8 V)with fast reaction kinetics.However,the development of DIBs is being hindered by dynamic mismatch between a cathode and an anode due to sluggish Li+diffusion at a high rate.Herein,we prepared phyllostachys edulis derived carbon(PEC)through microstructure regulation strategy and investigated the carbonized temperature effect,which effectively tailored the rich short-range ordered graphite microdomains and disor-dered amorphous regions,as well as a unique nano-pore hierarchical structure.The pore size distribution of nano-pores was concentrated in 0.5-5 nm,providing suitable channels for rapid Li+transportation.It was found that PEC-500(carbon-ized at 500 ℃)achieved a high capacity of 436 mAh·g-1 at 300 mA·g-1 and excellent rate performance(maintaining a high capacity of 231 mAh·g-1 at 3 A·g-1).The assembled dual-carbon PEC-500||graphite full battery delivered 114 mAh·g-1 at 10 C with 96%capacity retention after 3000 cycles and outstanding rate capability,providing 74 mAh·g-1 at 50 C.关键词
双离子电池/生物质硬碳/结构调控/高工作电压/高倍率Key words
Dual-ion battery/Biomass hard carbon/Structural regulation/High operating voltage/High rate引用本文复制引用
周锐,刘瑞,李云诺,蒋思捷,井甜甜,徐艳松,曹菲菲..生物质基碳负极结构调控工程实现高倍率双离子电池[J].电化学（中英文）,2025,31(8):34-43,10.基金项目
This work was financially supported by the Nation-al Natural Science Foundation of China(Grant Nos.52272208,22309057),the Natural Science Foundation of Hubei Province(Grant No.2023AFB355),the Fun-damental Research Funds for the Central Universities of China(Grant No.2662022LXQD001). （Grant Nos.52272208,22309057）
