新型炭材料（中英文）2026，Vol.41Issue(3)：652-663,12.DOI:10.1016/S1872-5805(26)61087-6
调控木材基硬炭的开孔结构以提高钠离子电池负极性能
Modulating the open pore structure of hard carbons derived from wood for sodium-ion battery anodes
摘要
Abstract
Hard carbon(HC)derived from renewable biomass is a promising anode material for sodium-ion batteries(SIBs).However,controlling the structure of hard carbon so that it has a high energy density,favorable rate performance,and cycling sta-bility is still a challenge.We propose a strategy to control the open pore structure of hard carbon derived from wood for sodium-ion storage by the addition of sodium carbonate under carbonization at 1100 ℃.The resulting HC has an increased interlayer spacing,and a more uniform open pore distribution(2-3 nm)with a high slope capacity,thereby enabling efficient sodium-ion transport and storage.The HC anode has a reversible capacity of 326 mAh g-1 at a current density of 30 mA g-1,and maintains a reversible capacity of 270 mAh g-1 at 1 A g-1 and a capacity of 68 mAh g-1 even at 10 A g-1 during rate performance tests.After 300 cycles,it retains 76.7%(207 mAh g-1)of its capacity at 1.0 A g-1.In situ Raman spectroscopy and the galvanostatic inter-mittent titration testing results reveal an adsorption-intercalation-filling sodium storage mechanism.This work provides a strategy to optimize the open pore structure of biomass derived hard carbon for high performance sodium ion storage.关键词
钠离子电池/硬炭/生物质/孔隙结构Key words
Sodium-ion batteries/Hard carbon/Biomass/Pore structure分类
化学化工引用本文复制引用
李梦龙,龚俊,李金铭,谢海鹏,李业军..调控木材基硬炭的开孔结构以提高钠离子电池负极性能[J].新型炭材料（中英文）,2026,41(3):652-663,12.基金项目
This work was supported by National Natural Science Foundation of China(11904411).国家自然科学基金(11904411). （11904411）
