Holey nickel hydroxide nanosheets for wearable solid-state fiber-supercapacitors

• Main Authors: Shi, Peipei, Chen, Rong, Li, Li, An, Jianing, Hua, Li, Zhou, Jinyuan, Liu, Bin, Chen, Peng, Huang, Wei, Sun, Gengzhi
• Other Authors: School of Chemical and Biomedical Engineering
• Format: Article
• Language: English
• Published: 2020
• Subjects: Engineering::Chemical engineering; Holey Nickel Hydroxide (Ni(OH)2); Fiber-supercapacitors
• Online Access: https://hdl.handle.net/10356/141082
• Institution: Nanyang Technological University

Holey nickel hydroxide (Ni(OH)2) nanosheets with a mean thickness of 2 nm are facilely synthesized, and then embedded in carbon nanotube (CNT) scaffolds to construct a hybrid fiber electrode, which shows a high volumetric capacitance of 335.9 F cm−3 at 0.8 A cm−3 and superior rate performance. The hybrid supercapacitor made from the Ni(OH)2/CNT fiber can deliver a high specific capacitance of 24.8 F cm−3 and an energy density of 5.8 mW h cm−3 with outstanding mechanical stability under repeated bending conditions.