Li Shuoshuo, Cheng Pengpeng, Luo Jiaxian, Zhou Dan, Xu Weiming, Li Jingwei, Li Ruchun, Yuan Dingsheng
1School of Chemistry and Materials Science, Jinan University, Guangzhou, 510632 People's Republic of China.
2Guangzhou Key Laboratory of Vacuum Coating Technologies and New Energy Materials, Jinan University, Guangzhou, 510632 People's Republic of China.
Nanomicro Lett. 2017;9(3):31. doi: 10.1007/s40820-017-0134-8. Epub 2017 Feb 18.
A flexible asymmetric supercapacitor (ASC) based on a CoAl-layered double hydroxide (CoAl-LDH) electrode and a reduced graphene oxide (rGO) electrode was successfully fabricated. The CoAl-LDH electrode as a positive electrode was synthesized by directly growing CoAl-LDH nanosheet arrays on a carbon cloth (CC) through a facile hydrothermal method, and it delivered a specific capacitance of 616.9 F g at a current density of 1 A g. The rGO electrode as a negative electrode was synthesized by coating rGO on the CC via a simple dip-coating method and revealed a specific capacitance of 110.0 F g at a current density of 2 A g. Ultimately, the advanced ASC offered a broad voltage window (1.7 V) and exhibited a high superficial capacitance of 1.77 F cm at 2 mA cm and a high energy density of 0.71 mWh cm at a power density of 17.05 mW cm, along with an excellent cycle stability (92.9% capacitance retention over 8000 charge-discharge cycles).
基于钴铝层状双氢氧化物（CoAl-LDH）电极和还原氧化石墨烯（rGO）电极成功制备了一种柔性非对称超级电容器（ASC）。作为正极的CoAl-LDH电极通过简便的水热法直接在碳布（CC）上生长CoAl-LDH纳米片阵列合成，在电流密度为1 A g时其比电容为616.9 F g。作为负极的rGO电极通过简单的浸涂法将rGO涂覆在CC上合成，在电流密度为2 A g时比电容为110.0 F g。最终，这种先进的ASC具有宽电压窗口（1.7 V），在2 mA cm时表现出1.77 F cm的高表面电容，在功率密度为17.05 mW cm时具有0.71 mWh cm的高能量密度，以及出色的循环稳定性（在8000次充放电循环中电容保持率为92.9%）。
Zotero 插件
