Journal
DALTON TRANSACTIONS
Volume 49, Issue 47, Pages 17310-17320Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/d0dt03237a
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Funding
- Natural Science Foundation of Anhui Province [2008085MB55]
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A novel Co-Co LDH/C/Ni(OH)(2) nanostructure was constructed by loading Ni(OH)(2) nanodots on hollow Co-Co LDH/C nanocages derived from MOFs. The Co-Co LDH/C/Ni(OH)(2) nanostructure revealed a high specific capacitance of up to 1426 F g(-1) at 1 A g(-1) and an outstanding rate capability with 90.2% retention at 10 A g(-1) owing to the cooperative effect of the Ni(OH)(2) nanodots and hollow Co-Co LDH/C nanocages. The electrochemical kinetic analysis showed that the Co-Co LDH/C/Ni(OH)(2) electrode was dominated by surface capacitance control, demonstrating the origins of performance improvement. This work may provide an effective strategy by combining nanodots with hollow porous structures for low-cost and efficient energy storage materials.
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