Phase Transformation Guided Single-Layer beta-Co(OH)(2) Nanosheets for Pseudocapacitive Electrodes

CORC > 苏州纳米技术与纳米仿生研究所 > 中国科学院苏州纳米技术与纳米仿生研究所 > 纳米仿生研究部 > 靳健团队

	Phase Transformation Guided Single-Layer beta-Co(OH)(2) Nanosheets for Pseudocapacitive Electrodes
	Jin, J (靳健)
刊名	ACS NANO
	2014
卷号	8 期号:4 页码:3724-3734
关键词	single-layer beta-Co(OH)(2) nanosheet two-dimensional materials pseudocapacitors
通讯作者	Jin, J (靳健)
英文摘要	It is known that Co(OH)(2) can be crystallized into a layered structure with two polymorphs: alpha and beta. The single-layer alpha-Co(OH)(2) nanosheet has been prepared by exfoliating directly alpha phase layered Co(OH)(2). However, due to theoretical barriers, a single-layer beta-Co(OH)(2) nanosheet has not been achieved so far. In this article, phase transformation during exfoliation of layered Co(OH)(2) from alpha to beta is observed and a single-layer beta-Co(OH)(2) nanosheet with a thickness of similar to 1.1 nm is prepared through phase transition of layered alpha-Co(OH)(2) nanocones in a mild wet chemical process for the first time, with a nearly 100% yield. The as-prepared single-layer beta-Co(OH)(2) nanosheets are assembled with graphene oxide to form an all-two-dimensional materials-based composite for use as an electrode for the pseudocapacitor. The reduced graphene oxide/beta-Co(OH)(2) composite exhibits a high specific capacitance up to 2080 F/g scaled to the total mass of the electrode or 3355 F/g scaled to the active mass of beta-Co(OH)(2) nanosheets at the current density of 1 A/g. The electrode also demonstrates the excellent rate performance and long cycle life.
收录类别	SCI
语种	英语
WOS记录号	WOS:000334990600067
公开日期	2015-02-03
内容类型	期刊论文
源URL	[http://ir.sinano.ac.cn/handle/332007/1807]
专题	苏州纳米技术与纳米仿生研究所_纳米仿生研究部_靳健团队
通讯作者	Jin, J (靳健)
推荐引用方式 GB/T 7714	Jin, J . Phase Transformation Guided Single-Layer beta-Co(OH)(2) Nanosheets for Pseudocapacitive Electrodes[J]. ACS NANO,2014,8(4):3724-3734.
APA	Jin, J .(2014).Phase Transformation Guided Single-Layer beta-Co(OH)(2) Nanosheets for Pseudocapacitive Electrodes.ACS NANO,8(4),3724-3734.
MLA	Jin, J ."Phase Transformation Guided Single-Layer beta-Co(OH)(2) Nanosheets for Pseudocapacitive Electrodes".ACS NANO 8.4(2014):3724-3734.