杂原子
热解
生物炭
介孔材料
碳纤维
化学
生物量(生态学)
麸皮
化学工程
材料科学
有机化学
催化作用
原材料
复合数
复合材料
农学
戒指(化学)
生物
工程类
作者
Xikui Zhang,Zhaosheng Yu,Xiaoqian Ma,Junjie Li,Wenchang Yue,Yujing Zhang,Tao He
标识
DOI:10.1016/j.jaap.2024.106617
摘要
The application of biomass-derived porous carbon in supercapacitors should focus on heteroatom doping and modulation of pore structure. This work presented a technique for synthesizing natural heteroatom co-doped porous carbon by co-pyrolysis coupled with microwave activation of the kapok tree (KT) and peanut bran (PB). PB is a natural heteroatom donor and a precursor of porous carbon. Some S-containing radicals and N-containing functional groups in PB are successfully retained in the biochar, facilitating heteroatom doping in NHDPC. When the mixing ratio of KT and PB is 1:1, the mesoporous volume of NHDPC-5PB can reach 1.81 cm3/g. Relative to the porous carbon NHDPC-0PB synthesized solely through KT pyrolysis, the mesoporous volume of NHDPC-5PB increases by 74.04%. Moreover, the specific capacitance of NHDPC-5PB at 0.2 A/g attains 346.8 F/g, which is a 36.6% increase compared to NHDPC-0PB. This study presents a new strategy to prepare natural heteroatom co-doped porous carbon by co-pyrolysis of heteroatom-rich biomass as a heteroatom donor with lignocellulosic biomass.
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