Lanthanum Oxide Nickel Hydroxide Composite Triangle Nanosheets for Energy Density Asymmetric Supercapacitors

Transition metal hydroxides are a kind of promising electrode material in electrochemical energy storage, but the poor conductivity limits their application. Lanthanides are good proton conductors and can usually improve the intrinsic conductivity of other materials. By integrating the merits of lan...

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Autores principales:	Huiyu Duan, Mei Shi, Mengfei Zhang, Geyu Feng, Suli Liu, Changyun Chen
Formato:	article
Lenguaje:	EN
Publicado:	Frontiers Media S.A. 2021
Materias:	asymmetric supercapacitor electrochemical energy storage nanosheet transition metal hydroxides rare earth Chemistry QD1-999
Acceso en línea:	https://doaj.org/article/bc472dc2470f4f29b6cc7488297788fe
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spelling	oai:doaj.org-article:bc472dc2470f4f29b6cc7488297788fe2021-11-11T10:22:21ZLanthanum Oxide Nickel Hydroxide Composite Triangle Nanosheets for Energy Density Asymmetric Supercapacitors2296-264610.3389/fchem.2021.783942https://doaj.org/article/bc472dc2470f4f29b6cc7488297788fe2021-11-01T00:00:00Zhttps://www.frontiersin.org/articles/10.3389/fchem.2021.783942/fullhttps://doaj.org/toc/2296-2646Transition metal hydroxides are a kind of promising electrode material in electrochemical energy storage, but the poor conductivity limits their application. Lanthanides are good proton conductors and can usually improve the intrinsic conductivity of other materials. By integrating the merits of lanthanide elements and transition metal hydroxide, we designed lanthanum oxide nickel hydroxide composites (LONH) with unique ultrathin triangle nanosheet morphology via a controllable synthetic strategy for high-performance supercapacitors. When the LONH is used as positive electrode material in aqueous asymmetric supercapacitor, it reveals an energy density (107.8 W h kg−1 at 800 W kg−1), rate performance (86.9% retention at 4 kW kg−1) and outstanding cycle stability (more than 90% retention after 3,000 cycles). This work confirms that compositing La2O3 and Ni(OH)2 can significantly improve the supercapacitor performance of both pristine La2O3 and transition metal hydroxide composites. We hope this work would offer a good prospect for developing other lanthanide-transition metal hydroxide composites as an attractive class of electrode materials in electrochemical energy storage.Huiyu DuanMei ShiMengfei ZhangGeyu FengSuli LiuChangyun ChenFrontiers Media S.A.articleasymmetric supercapacitorelectrochemical energy storagenanosheettransition metal hydroxidesrare earthChemistryQD1-999ENFrontiers in Chemistry, Vol 9 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	asymmetric supercapacitor electrochemical energy storage nanosheet transition metal hydroxides rare earth Chemistry QD1-999
spellingShingle	asymmetric supercapacitor electrochemical energy storage nanosheet transition metal hydroxides rare earth Chemistry QD1-999 Huiyu Duan Mei Shi Mengfei Zhang Geyu Feng Suli Liu Changyun Chen Lanthanum Oxide Nickel Hydroxide Composite Triangle Nanosheets for Energy Density Asymmetric Supercapacitors
description	Transition metal hydroxides are a kind of promising electrode material in electrochemical energy storage, but the poor conductivity limits their application. Lanthanides are good proton conductors and can usually improve the intrinsic conductivity of other materials. By integrating the merits of lanthanide elements and transition metal hydroxide, we designed lanthanum oxide nickel hydroxide composites (LONH) with unique ultrathin triangle nanosheet morphology via a controllable synthetic strategy for high-performance supercapacitors. When the LONH is used as positive electrode material in aqueous asymmetric supercapacitor, it reveals an energy density (107.8 W h kg−1 at 800 W kg−1), rate performance (86.9% retention at 4 kW kg−1) and outstanding cycle stability (more than 90% retention after 3,000 cycles). This work confirms that compositing La2O3 and Ni(OH)2 can significantly improve the supercapacitor performance of both pristine La2O3 and transition metal hydroxide composites. We hope this work would offer a good prospect for developing other lanthanide-transition metal hydroxide composites as an attractive class of electrode materials in electrochemical energy storage.
format	article
author	Huiyu Duan Mei Shi Mengfei Zhang Geyu Feng Suli Liu Changyun Chen
author_facet	Huiyu Duan Mei Shi Mengfei Zhang Geyu Feng Suli Liu Changyun Chen
author_sort	Huiyu Duan
title	Lanthanum Oxide Nickel Hydroxide Composite Triangle Nanosheets for Energy Density Asymmetric Supercapacitors
title_short	Lanthanum Oxide Nickel Hydroxide Composite Triangle Nanosheets for Energy Density Asymmetric Supercapacitors
title_full	Lanthanum Oxide Nickel Hydroxide Composite Triangle Nanosheets for Energy Density Asymmetric Supercapacitors
title_fullStr	Lanthanum Oxide Nickel Hydroxide Composite Triangle Nanosheets for Energy Density Asymmetric Supercapacitors
title_full_unstemmed	Lanthanum Oxide Nickel Hydroxide Composite Triangle Nanosheets for Energy Density Asymmetric Supercapacitors
title_sort	lanthanum oxide nickel hydroxide composite triangle nanosheets for energy density asymmetric supercapacitors
publisher	Frontiers Media S.A.
publishDate	2021
url	https://doaj.org/article/bc472dc2470f4f29b6cc7488297788fe
work_keys_str_mv	AT huiyuduan lanthanumoxidenickelhydroxidecompositetrianglenanosheetsforenergydensityasymmetricsupercapacitors AT meishi lanthanumoxidenickelhydroxidecompositetrianglenanosheetsforenergydensityasymmetricsupercapacitors AT mengfeizhang lanthanumoxidenickelhydroxidecompositetrianglenanosheetsforenergydensityasymmetricsupercapacitors AT geyufeng lanthanumoxidenickelhydroxidecompositetrianglenanosheetsforenergydensityasymmetricsupercapacitors AT suliliu lanthanumoxidenickelhydroxidecompositetrianglenanosheetsforenergydensityasymmetricsupercapacitors AT changyunchen lanthanumoxidenickelhydroxidecompositetrianglenanosheetsforenergydensityasymmetricsupercapacitors
_version_	1718439254962470912

Lanthanum Oxide Nickel Hydroxide Composite Triangle Nanosheets for Energy Density Asymmetric Supercapacitors

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