Nanoarchitectonics with Expired Carbon Fiber Reinforced Polymer-Derived Carbon Layer@Carbon Fiber Coaxial Electrodes for Superior Supercapacitor Performance

IF 3.3 3区化学 Q2 CHEMISTRY, PHYSICAL

The Journal of Physical Chemistry C Pub Date : 2024-12-09 DOI:10.1021/acs.jpcc.4c05557

Chunhua Zhao, Wenjie Gao, Yipeng Zhao, Mingkun Li, Xiangzhi Tong, Huiming Guo, Yunpeng Zhu, Chongjun Zhao

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Abstract

Inspired by the double demands of both collection/storage from new energy devices and storage/supply for consumption tools, energy storage attracts much attention, and electrodes play a crucial role. In our work, by using an expired carbon fiber reinforced polymer (CFRP) as the raw material, when the epoxy resin component is removed through pretreatment at 350 °C and retained epoxy resin on the surface of carbon fibers (CFs) is carbonized/activated at 650 °C, a coaxial structure of carbon layer@carbon fiber (C@CF) is acquired (specific area: 786 m² g^–1). This C@CF can be directly used as a supercapacitor electrode, which exhibits good electrochemical performance: a specific capacitance of 202 F g^–1 at 1 A g^–1 for its electrode (vs 11.1 F g^–1 for bare CF), while an energy density of 9.75 Wh kg^–1 and a specific capacitance retention of 93.27% after 10,000 cycles for its symmetric supercapacitor (SSC).

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纳米结构与过期碳纤维增强聚合物衍生碳Layer@Carbon纤维同轴电极优越的超级电容器性能

在新能源设备的收集/存储和消费工具的存储/供应的双重需求的启发下，储能备受关注，电极起着至关重要的作用。在我们的工作中，以过期的碳纤维增强聚合物（CFRP）为原料，在350℃下预处理去除环氧树脂组分，在650℃下碳化/活化碳纤维（CFs）表面保留的环氧树脂，得到碳纤维（C@CF）的同轴结构（比面积：786 m2 g-1）。该C@CF可以直接用作超级电容器电极，具有良好的电化学性能：其电极在1 a g-1时的比电容为202 F - 1（裸CF为11.1 F - 1），而其对称超级电容器（SSC）的能量密度为9.75 Wh kg-1，在10,000次循环后的比电容保持率为93.27%。

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来源期刊

The Journal of Physical Chemistry C 化学-材料科学：综合

CiteScore

6.50

自引率

8.10%

发文量

2047

审稿时长

1.8 months

期刊介绍： The Journal of Physical Chemistry A/B/C is devoted to reporting new and original experimental and theoretical basic research of interest to physical chemists, biophysical chemists, and chemical physicists.