Urchin-Like Ni2/3Co1/3(CO3)1/2(OH)•0.11H2O for High-Performance Supercapacitors

被引：13

作者：

Jiang, Zi-Min ^{[1
]}

Xu, Ting-Ting ^{[1
]}

Yan, Cong-Cong ^{[1
]}

Ma, Cai-Yun ^{[1
]}

Dai, Shu-Ge ^{[1
]}

机构：

[1] Zhengzhou Univ, Minist Educ, Key Lab Mat Phys, Zhengzhou, Henan, Peoples R China

来源：

FRONTIERS IN CHEMISTRY | 2018年 / 6卷

基金：

中国国家自然科学基金; 中国博士后科学基金;

关键词：

porous; NiCo hydroxides; graphene; composites; supercapacitors; ENERGY; NANOSHEETS; ELECTRODEPOSITION; NANOSTRUCTURES; PHOSPHIDES; DESIGN; ARRAYS; FOAM; NANO;

D O I：

10.3389/fchem.2018.00431

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Here, we report our finding in the fabrication of novel porous urchin-like Ni2/3Co1/3(CO3)(1/2)(OH)center dot 0. 11H(2)O (denoted as NC) nanomaterial composed of numerous nanoneedles through an one-step hydrothermal method, which deliveres a high specific capacity of 318C 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.

引用

页数：8

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