Miao Zhenyu, Huang Yuan, Xin Jianping, Su Xiaowen, Sang Yuanhua, Liu Hong, Wang Jian-Jun
State Key Laboratory of Crystal Material , Shandong University , Jinan 250100 , China.
Institute for Advanced Interdisciplinary Research (IAIR) , University of Jinan , Jinan 250022 , China.
ACS Appl Mater Interfaces. 2019 May 15;11(19):18044-18050. doi: 10.1021/acsami.9b04426. Epub 2019 May 6.
Carbon materials display appealing physical, chemical, and mechanical properties and have been extensively studied as supercapacitor electrodes. The surface engineering further allows us to tune their capability of adsorption/desorption and catalysis. Therefore, a facile and inexpensive chemical-acid-etching approach has been developed to activate the carbon cloth as an electrode for supercapacitor. The capacitance of the acid-etched carbon cloth electrode can approach 5310 mF cm at a current density of 5 mA cm with remarkable recycling stability. The all-solid-state symmetric supercapacitor delivered a high energy density of 4.27 mWh cm at a power density of 1.32 W cm. Furthermore, this symmetric supercapacitor exhibited outstanding mechanical flexibility, and the capacity remained nearly unchanged after 1000 bending cycles.
碳材料具有吸引人的物理、化学和机械性能，并且作为超级电容器电极已被广泛研究。表面工程进一步使我们能够调节它们的吸附/解吸和催化能力。因此，已经开发出一种简便且廉价的化学酸蚀刻方法来活化碳布作为超级电容器的电极。在电流密度为5 mA/cm²时，酸蚀刻碳布电极的电容可接近5310 mF/cm²，具有显著的循环稳定性。全固态对称超级电容器在功率密度为1.32 W/cm²时提供了4.27 mWh/cm³的高能量密度。此外，这种对称超级电容器表现出出色的机械柔韧性，在1000次弯曲循环后容量几乎保持不变。
