新型炭材料（中英文）2024，Vol.39Issue(6)：1117-1127,11.DOI:10.1016/S1872-5805(24)60868-1
沥青基炭负极材料应用于高性能钾离子电池
Synthesis of pitch-derived carbon anodes for high-performance potassium-ion batteries
摘要
Abstract
Potassium-ion batteries(PIBs)hold promise for large-scale energy storage,necessitating the development of high-per-formance anode materials.Carbons with the advantage of structural versatility,are recognized as the most promising anode materials for their commercialization,however the relationship between the carbon anode structure and its electrochemical performance re-mains unclear.A series of pitch-based soft carbons with different structures were fabricated using carbonization temperatures in the range 600-1400 ℃,and their changes in carbon configuration and K-storage performance as a function of carbonization temperature were investigated.Correlations between the carbon crystal size and the low-potential plateau region capacity and between the degree of structural disorder of the carbons with their sloping region capacity were revealed.Among all samples,that obtained by carboniza-tion at 700 ℃ had a relatively high degree of disorder and a large interlayer spacing,and had a high reversible capacity of 329.4 mAh g-1 with a high initial coulombic efficiency of 72.81％,and maintained a high capacity of 144.2 mAh g-1 at the current rate of 5 C.These findings improve our fundamental understanding of the K-storage process in carbon anodes,and thus facilitate the advance of PIBs.关键词
钾离子电池/沥青/炭材料/负极/机制Key words
Potassium-ion batteries/Pitch/Carbon material/Anode/Mechanism分类
化学化工引用本文复制引用
蒋明池,孙宁,俞嘉旭,王体征,Razium Ali Somoro,贾梦秋,徐斌..沥青基炭负极材料应用于高性能钾离子电池[J].新型炭材料（中英文）,2024,39(6):1117-1127,11.基金项目
This work was financially supported by the Na-tional Natural Science Foundation of China(52072021)and the Fundamental Research Funds for the Central Universities(buctrc202141). 国家自然科学基金(52072021),中央高校基本科研业务费(buctrc202141) （52072021）
