Urchin-Like Ni(2/3)Co(1/3)(CO(3))(1/2)(OH)·0.11H(2)O for High-Performance Supercapacitors.
Urchin-Like Ni(2/3)Co(1/3)(CO(3))(1/2)(OH)·0.11H(2)O for High-Performance Supercapacitors.
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用于高性能超级电容器的类海胆 Ni2/3Co1/3(CO3)1/2(OH)·0.11H2O
DOI:
10.3389/fchem.2018.00431
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发表时间:
2018
影响因子:
5.5
通讯作者:
Dai SG
中科院分区:
文献类型:
--
作者:
Jiang ZM;Xu TT;Yan CC;Ma CY;Dai SG
Here, we report our finding in the fabrication of novel porous urchin-like Ni2/3Co1/3(CO3)1/2(OH)·0. 11H2O (denoted as NC) nanomaterial composed of numerous nanoneedles through an one-step hydrothermal method, which deliveres a high specific capacity of 318 C g−1 at a current density of 1 A g−1. Moreover, an architectural composite electrode consisting of the porous NC nanoneedles wrapped by reduced graphene oxide (rGO) nanosheets exhibits large specific capacity (431 C g−1 at 1 A g−1), high rate capability and long cycling life (94% capacity retention after 5,000 cycles at 20 A g−1). The presence of rGO in the composite electrode greatly improves the electronic conductivity, providing efficient current collection for fast energy storage.
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