Hydrothermally Formed Three-Dimensional Nanoporous Ni(OH)2 Thin-Film Supercapacitors

Yang Yang; Lei Li; Gedeng Ruan; Huilong Fei; Changsheng Xiang; Xiujun Fan; James M. Tour

doi:10.1021/nn5040197

Hydrothermally Formed Three-Dimensional Nanoporous Ni(OH)₂ Thin-Film Supercapacitors

Yang Yang
, Lei Li
, Gedeng Ruan
, Huilong Fei
, Changsheng Xiang
, Xiujun Fan
, James M. Tour

Rice University

Research output: Contribution to journal › Article › peer-review

155 Scopus citations

Abstract

A three-dimensional nanoporous Ni(OH)₂ thin-film was hydrothermally converted from an anodically formed porous layer of nickel fluoride/oxide. The nanoporous Ni(OH)₂ thin-films can be used as additive-free electrodes for energy storage. The nanoporous layer delivers a high capacitance of 1765 F g^-1 under three electrode testing. After assembly with porous activated carbon in asymmetric supercapacitor configurations, the devices deliver superior supercapacitive performances with capacitance of 192 F g^-1, energy density of 68 Wh kg^-1, and power density of 44 kW kg^-1. The wide working potential window (up to 1.6 V in 6 M aq KOH) and stable cyclability (∼90% capacitance retention over 10000 cycles) make the thin-film ideal for practical supercapacitor devices.

Original language	English
Pages (from-to)	9622-9628
Number of pages	7
Journal	ACS Nano
Volume	8
Issue number	9
DOIs	https://doi.org/10.1021/nn5040197
State	Published - 23 Sep 2014
Externally published	Yes

Keywords

hydrothermal treatment
nanoporous
nickel hydroxide
supercapacitors
thin-film

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10.1021/nn5040197

Cite this

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title = "Hydrothermally Formed Three-Dimensional Nanoporous Ni(OH)2 Thin-Film Supercapacitors",

abstract = "A three-dimensional nanoporous Ni(OH)2 thin-film was hydrothermally converted from an anodically formed porous layer of nickel fluoride/oxide. The nanoporous Ni(OH)2 thin-films can be used as additive-free electrodes for energy storage. The nanoporous layer delivers a high capacitance of 1765 F g-1 under three electrode testing. After assembly with porous activated carbon in asymmetric supercapacitor configurations, the devices deliver superior supercapacitive performances with capacitance of 192 F g-1, energy density of 68 Wh kg-1, and power density of 44 kW kg-1. The wide working potential window (up to 1.6 V in 6 M aq KOH) and stable cyclability (∼90\% capacitance retention over 10000 cycles) make the thin-film ideal for practical supercapacitor devices.",

keywords = "hydrothermal treatment, nanoporous, nickel hydroxide, supercapacitors, thin-film",

author = "Yang Yang and Lei Li and Gedeng Ruan and Huilong Fei and Changsheng Xiang and Xiujun Fan and Tour, \{James M.\}",

note = "Publisher Copyright: {\textcopyright} 2014 American Chemical Society.",

year = "2014",

month = sep,

day = "23",

doi = "10.1021/nn5040197",

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volume = "8",

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TY - JOUR

T1 - Hydrothermally Formed Three-Dimensional Nanoporous Ni(OH)2 Thin-Film Supercapacitors

AU - Yang, Yang

AU - Li, Lei

AU - Ruan, Gedeng

AU - Fei, Huilong

AU - Xiang, Changsheng

AU - Fan, Xiujun

AU - Tour, James M.

PY - 2014/9/23

Y1 - 2014/9/23

N2 - A three-dimensional nanoporous Ni(OH)2 thin-film was hydrothermally converted from an anodically formed porous layer of nickel fluoride/oxide. The nanoporous Ni(OH)2 thin-films can be used as additive-free electrodes for energy storage. The nanoporous layer delivers a high capacitance of 1765 F g-1 under three electrode testing. After assembly with porous activated carbon in asymmetric supercapacitor configurations, the devices deliver superior supercapacitive performances with capacitance of 192 F g-1, energy density of 68 Wh kg-1, and power density of 44 kW kg-1. The wide working potential window (up to 1.6 V in 6 M aq KOH) and stable cyclability (∼90% capacitance retention over 10000 cycles) make the thin-film ideal for practical supercapacitor devices.

AB - A three-dimensional nanoporous Ni(OH)2 thin-film was hydrothermally converted from an anodically formed porous layer of nickel fluoride/oxide. The nanoporous Ni(OH)2 thin-films can be used as additive-free electrodes for energy storage. The nanoporous layer delivers a high capacitance of 1765 F g-1 under three electrode testing. After assembly with porous activated carbon in asymmetric supercapacitor configurations, the devices deliver superior supercapacitive performances with capacitance of 192 F g-1, energy density of 68 Wh kg-1, and power density of 44 kW kg-1. The wide working potential window (up to 1.6 V in 6 M aq KOH) and stable cyclability (∼90% capacitance retention over 10000 cycles) make the thin-film ideal for practical supercapacitor devices.

KW - hydrothermal treatment

KW - nanoporous

KW - nickel hydroxide

KW - supercapacitors

KW - thin-film

UR - https://www.scopus.com/pages/publications/84922838979

U2 - 10.1021/nn5040197

DO - 10.1021/nn5040197

M3 - 文章

AN - SCOPUS:84922838979

SN - 1936-0851

VL - 8

SP - 9622

EP - 9628

JO - ACS Nano

JF - ACS Nano

IS - 9

ER -

Hydrothermally Formed Three-Dimensional Nanoporous Ni(OH)₂ Thin-Film Supercapacitors

Abstract

Keywords

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