| 板栗壳生物炭高性能对称性超级电容器电极材料的制备及性能 |
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| 引用本文： | 王芳平,马婧,李小亚,乔艳,周凯玲.板栗壳生物炭高性能对称性超级电容器电极材料的制备及性能[J].化工进展,2021,40(8):4381-4387. |
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| 作者姓名： | 王芳平 马婧 李小亚 乔艳 周凯玲 |
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| 作者单位： | 甘肃省生物电化学与环境分析重点实验室,省部共建生态环境相关高分子材料教育部重点实验室,西北师范大学化学化工学院,甘肃兰州730070 |
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| 基金项目： | 国家自然科学基金(21065010) |
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| 摘 要： | 以板栗壳为碳源（CC），经700℃炭化（CC700）后采用ZnCl2活化，成功制备了高性能的超级电容器电极材料（CC700-Zn）。对电极材料的形貌和性能进行测试，发现CC700-Zn具有3D孔道网络结构，比表面积达813.9m2/g，这种具有高比表面积的孔道结构为电子传输提供了通道。三电极体系中，1A/g时比电容可达506F/g，经过10000圈的循环之后其比电容仍能保持初始值的91%；二电极体系中，用CC700-Zn组装的对称性电容器在1A/g下的比电容为118F/g，CV的扫描速率可增大至220mV/s，电势窗宽0~6V。功率密度为900W/kg时，能量密度为53.1W·h/kg，当功率密度增加至27000W/kg时，能量密度仍可保持27W·h/kg。表明用板栗壳作为碳源制备对称性超级电容器电极材料是可行的。
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| 关 键 词： | 板栗壳 超级电容器 多孔碳 生物质 |
| 收稿时间： | 2020-09-29 |
Preparation and properties of chestnut shell-based biochar electrode material for high-performance symmetrical supercapacitor |
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| WANG Fangping,MA Jing,LI Xiaoya,QIAO Yan,ZHOU Kailing.Preparation and properties of chestnut shell-based biochar electrode material for high-performance symmetrical supercapacitor[J].Chemical Industry and Engineering Progress,2021,40(8):4381-4387. |
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| Authors: | WANG Fangping MA Jing LI Xiaoya QIAO Yan ZHOU Kailing |
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| Affiliation: | Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu；Key Laboratory of Eco-Environment-Related Polymer Materials，Ministry of Education of China；College of Chemistry and Chemical Engineering，Northwest Normal University, Lanzhou 730070, Gansu, China |
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| Abstract: | High performance supercapacitor electrode material (CC 700-Zn) was successfully prepared by using chestnut shell as carbon source (CC) and ZnCl2 activation after carbonization of CC at 700℃. The morphology and performance of CC700-Zn electrode materials were tested. It was found that CC700-Zn had a 3D channel network structure with a specific surface area of 813.9m2/g, and the network structure formed by mesopores and micropores provided a channel for electronic transmission. In a three-electrode system, CC700-Zn showed a high specific capacitance of 506F/g at a current density of 1A/g and outstanding cycling stability of 91% capacitance retention after 10000 cycles. In a two-electrode system, a symmetrical capacitor was assembled with CC700-Zn. The symmetric capacitor had a specific capacitance of 118F/g at 1A/g, the scan rate of CV can be increased to 220mV/s, and the potential window width was 0~1.6V. When the power density was 900W/kg, the energy density was 53.1W·h/kg. When the power density was increased to 27000W/kg, the energy density can still be maintained at 27W·h/kg. The above results indicated that it was feasible to prepare symmetrical supercapacitor electrode materials using chestnut shell as carbon source. |
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| Keywords: | chestnut shell supercapacitor porous carbon biomass |
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