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Urchin-Like Ni_2/3Co_1/3(CO₃)_1/2(OH)·0.11H₂O for High-Performance Supercapacitors.

ABSTRACT: Here, we report our finding in the fabrication of novel porous urchin-like Ni_2/3Co_1/3(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.

SUBMITTER: Jiang ZM

PROVIDER: S-EPMC6172363 | biostudies-literature | 2018

REPOSITORIES: biostudies-literature

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

Jiang Zi-Min ZM Xu Ting-Ting TT Yan Cong-Cong CC Ma Cai-Yun CY Dai Shu-Ge SG

Frontiers in chemistry 20180928

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) ...[more]

PMID: 30324101

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