Hierarchical Co-based Porous Layered Double Hydroxide Arrays Derived via Alkali Etching for High-performance Supercapacitors.
作者： Nasser Abushrenta , Xiaochao Wu , Junnan Wang , Junfeng Liu , Xiaoming Sun
DOI: 10.1038/SREP13082
关键词:
摘要: Hierarchical nanoarchitecture and porous structure can both provide advantages for improving the electrochemical performance in energy storage electrodes. Here we report a novel strategy to synthesize new electrode materials, hierarchical Co-based layered double hydroxide (PLDH) arrays derived via alkali etching from Co(OH)2@CoAl LDH nanoarrays. This not only has benefits of nanoarrays including short ion diffusion path good charge transport, but also possesses large contact surface area owing its which lead high specific capacitance (23.75 F cm(-2) or 1734 g(-1) at 5 mA cm(-2)) excellent cycling (over 85% after 5000 cycles). The enhanced material is promising candidate supercapacitors future application.
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