One-step method of direct growth spherical carbon on nickel foam as high-performance binder-free electrodes for supercapacitors
One-step method of direct growth spherical carbon on nickel foam as high-performance binder-free electrodes for supercapacitors
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泡沫镍上直接生长球形碳作为超级电容器高性能无粘合剂电极的一步法
DOI：
10.1016/j.matlet.2017.04.092
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发表时间：
2017
影响因子：
3
通讯作者：
Zhao Xu
中科院分区：
文献类型：
--
作者：
Yan Bo;Pang Liyun;He Dong;Suo Hui;Zhao Chun;Zhao Xu
采用高温高压水热法制备了三维球形碳/镍泡沫复合材料作为非粘性超级电容器电极，并对其储能能力进行了评估。所得电极在KOH溶液中表现出优异的电容行为，其特征在于低接触电阻、良好的倍率性能（在10 A g-1下保持82.7%）和远高于其它粉末碳电极材料（162 F g-1）的高比电容（296 F g-1）。此外，该电极表现出大的能量密度（在500 W kg-1的功率密度下为41.1 Wh kg-1）和上级的循环稳定性（在10，000次循环后仅2%的损失）。该合成方法简单易行，具有工业化生产的潜力。
Three-dimensional spherical carbon/nickel foam composites for use as non-adhesive supercapacitor electrodes were prepared using high temperature and high pressure hydrothermal methods and their energy storage capacity was assessed. The obtained electrodes exhibited an excellent capacitive behavior in KOH solutions, characterized by low contact resistance, good rate performance (82.7% retention at 10 A g−1), and high specific capacitance (296 F g−1) much higher than that of other powder carbon electrode materials (162 F g−1). Furthermore, the electrode exhibited a large energy density (41.1 Wh kg−1at a power density of 500 W kg−1) and superior cycle stability (only 2% loss after 10,000 cycles). The developed synthesis strategy is facile and with potential application in large-scale production.