新型炭材料（中英文）2025，Vol.40Issue(2)：367-381,15.DOI:10.1016/S1872-5805(25)60967-X
硬炭孔结构的调控及其储钠性能的优化
Tailoring the pore structure of hard carbon for enhanced sodium-ion battery anodes
摘要
Abstract
Biomass-derived hard carbons,usually prepared by pyrolysis,are widely considered the most promising anode materials for sodium-ion bat-teries(SIBs)due to their high capacity,low poten-tial,sustainability,cost-effectiveness,and environ-mental friendliness.The pyrolysis method affects the microstructure of the material,and ultimately its so-dium storage performance.Our previous work has shown that pyrolysis in a sealed graphite vessel im-proved the sodium storage performance of the car-bon,however the changes in its microstructure and the way this influences the sodium storage are still unclear.A series of hard carbon materials derived from corncobs(CCG-T,where T is the pyrolysis temperature)were pyrolyzed in a sealed graphite vessel at different temperatures.As the pyrolysis temperature increased from 1000 to 1400 ℃small carbon domains gradually transformed into long and curved domains.At the same time,a greater number of large open pores with uniform apertures,as well as more closed pores,were formed.With the further increase of pyrolysis temperature to 1600℃,the long and curved domains became longer and straighter,and some closed pores gradually became open.CCG-1400,with abundant closed pores,had a superior SIB performance,with an initial reversible ca-pacity of 320.73 mAh g-1 at a current density of 30 mA g-1,an initial Coulomb efficiency(ICE)of 84.34%,and a capacity re-tention of 96.70%after 100 cycles.This study provides a method for the precise regulation of the microcrystalline and pore structures of hard carbon materials.关键词
孔结构调控/闭孔/玉米芯/硬炭负极材料/钠离子电池Key words
Pore structure regulation/Closed pore/Corn cob/Hard carbon anode material/Sodium-ion batteries分类
化学化工引用本文复制引用
宋宁静,马灿良,郭楠楠,赵云,李万喜,李伯琼..硬炭孔结构的调控及其储钠性能的优化[J].新型炭材料（中英文）,2025,40(2):367-381,15.基金项目
This study was supported by Basic Research Project of Shanxi Province(202203021222291),Sci-ence and technology innovation talent team of Shanxi Province(202204051001005),and Key Research and Development(R&D)Projects of Shanxi Province(202202040201007),Fundamental Research Program of Shanxi Province,China(202403021221003). 山西省基础研究计划(202203021222291) （202203021222291）
山西省科技创新人才团队(202204051001005) （202204051001005）
山西省重点研发计划(202202040201007) （202202040201007）
山西省基础研究计划(202403021221003). （202403021221003）
