新型炭材料（中英文）2026，Vol.41Issue(1)：157-172,16.DOI:10.1016/S1872-5805(25)61015-8
一种由大豆荚制备的氮硫共掺杂炭材料用于钠离子电池负极
A N,S co-doped carbon produced from soybean pods for use as the anode in sodium-ion batteries
摘要
Abstract
Hard carbon(HC)is a promising anode material for sodium-ion batteries(SIBs)because of its large interlayer spa-cing and structural stability.However,it has a low initial Cou-lombic efficiency(ICE)and poor reversible specific capacity which limit its use.We report the use of biomass soybean pods as the precursor of a nitrogen and sulfur co-doped hard carbon with abundant mesopores,fabricated by a simple,low-cost and sustainable approach.When used as the anode for sodium-ion batteries,the relatively high nitrogen doping(～17%,mass frac-tion),ultra-low specific surface area(9.6 m2 g-1),and the large amount of pyridinic-N coordination combine to give an excellent electrochemical performance.The material has an outstand-ing electrochemical performance with a specific capacity of 425.0 mAh g-1,and an ICE of 83.7%at a current density of 0.1 A g-1.The capacity retention rate is as high as 99.5%after 110 cycles within a wide current range of 0.05-1 A g-1.An as-sembled full cell has an excellent cycling stability with 97.3%capacity retention after 100 cycles at a current density of 0.2 A g-1,and the energy density can reach as high as 141.2 Wh kg-1 at 1 A g-1.关键词
生物质硬炭/多孔炭材料/氮、硫共掺杂/电化学性质/钠离子电池Key words
Biomass hard carbon/Porous carbon materials/N,S co-doping/Electrochemical properties/Sodium-ion battery分类
化学化工引用本文复制引用
姚雪慧,吴静,陈莉晴,白杰,王利,张齐齐,郭凡辉,武建军,张一昕..一种由大豆荚制备的氮硫共掺杂炭材料用于钠离子电池负极[J].新型炭材料（中英文）,2026,41(1):157-172,16.基金项目
This study was funded by Key R&D Program of Shandong Province(Innovation Ability Improvement Project for Small and Medium-sized Science and Technology Enterprises)(2024TSGC0633,2024TS-GC0983). （Innovation Ability Improvement Project for Small and Medium-sized Science and Technology Enterprises）
