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B and N Co-Doped Wood Scrap Charcoal for Decorated Supercapacitor with High Conductivity
Chen, Gaojun1; Li, Yudong2; Han, Enshan1; Zhang, Ziqiang1; Yang, Xiaohui3; Zhou, Desheng4; He, Yanzhen1
2023-05-07
摘要The optimization of supercapacitive properties in carbon materials derived from cheap and sustainable wood scraps exhibits great application potential. Herein, in support of interfacial groups, polyaniline nanospheres were in situ constructed in the internal pore structure of wood scraps; further, the B and N elements were imported by carbonized and hydrothermal methods. The doped B regulated the species of N doping to improve the electrical conductivity of carbonized wood scraps, and it endowed a certain pseudo-capacitance. Coupled with the fine double-layer capacitance from the hierarchical structures constructed by carbonized nanospheres and wood scrap channels, a high specific capacitance of 406 F g(-1) at 0.5 A g(-1), high energy density (17.71 Wh kg(-1) at 250 W kg(-1)) and cycle stability (93.04% capacitance retention after 10,000 cycles) were performed simultaneously. This study provided a new strategy to improve the supercapacitive performance of bio-carbon materials in terms of structure and conductance.
关键词wood scrap B/N co-doping porous carbon in situ synthesis supercapacitor
DOI10.3390/f14050965
发表期刊FORESTS
卷号14期号:5页码:16
通讯作者Yang, Xiaohui(yangxiaohui@cigit.ac.cn) ; He, Yanzhen(yzhe87@163.com)
收录类别SCI
WOS记录号WOS:000997987900001
语种英语