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Synthesis of Cubic Ni(OH)(2) Nanocages Through Coordinating Etching and Precipitating Route for High-Performance Supercapacitors

Rational design of cage-like structure is an effective method for the improvement of the capacitive performance of transition metal hydroxides. In this work, cubic Ni(OH)2 nanocages (Ni(OH)2 NCs) were constructed through a coordinating etching and precipitating (CEP) route. Ni(OH)2 NCs possess abund...

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Autores principales: Tian, Liangliang, Yang, Tong, Pu, Wanrong, Zhang, Jinkun
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Springer US 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6890925/
https://www.ncbi.nlm.nih.gov/pubmed/31376019
http://dx.doi.org/10.1186/s11671-019-3096-6
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author Tian, Liangliang
Yang, Tong
Pu, Wanrong
Zhang, Jinkun
author_facet Tian, Liangliang
Yang, Tong
Pu, Wanrong
Zhang, Jinkun
author_sort Tian, Liangliang
collection PubMed
description Rational design of cage-like structure is an effective method for the improvement of the capacitive performance of transition metal hydroxides. In this work, cubic Ni(OH)2 nanocages (Ni(OH)2 NCs) were constructed through a coordinating etching and precipitating (CEP) route. Ni(OH)2 NCs possess abundant active sites, sufficient diffusion channels, and accelerated electron transfer rate, which are beneficial for electrochemical kinetics. As a positive electrode for supercapacitors, the Ni(OH)2 NCs/Ni foam (NF) electrode presents a high specific capacitance of 539.8 F g(−1) at 1 A g(−1), which is much larger than that of broken Ni(OH)2 NCs/NF (Ni(OH)2 BNCs/NF, 87.3 F g(−1) at 1 A g(−1)). In addition, the Ni(OH)2 NCs/NF electrode still retains 96.9% of its initial specific capacitance after 2000 cycles. The asymmetric supercapacitor (ASC) devices were assembled using Ni(OH)2 NCs/NF and activated carbon (AC)/NF as positive and negative electrodes, respectively. The ASC exhibits a higher energy density of 23.3 Wh kg(−1) at a power density of 800 W kg(−1) compared to Ni(OH)2 BNCs/NF (3 Wh kg(−1) at 880 W kg(−1)). These results demonstrate that the Ni(OH)2 NCs/NF electrode presents potential applications in the field of energy storage. The design of cage-like structure paves an effective way to achieve high-performance electrode materials. ELECTRONIC SUPPLEMENTARY MATERIAL: The online version of this article (10.1186/s11671-019-3096-6) contains supplementary material, which is available to authorized users.
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spelling pubmed-68909252019-12-17 Synthesis of Cubic Ni(OH)(2) Nanocages Through Coordinating Etching and Precipitating Route for High-Performance Supercapacitors Tian, Liangliang Yang, Tong Pu, Wanrong Zhang, Jinkun Nanoscale Res Lett Nano Express Rational design of cage-like structure is an effective method for the improvement of the capacitive performance of transition metal hydroxides. In this work, cubic Ni(OH)2 nanocages (Ni(OH)2 NCs) were constructed through a coordinating etching and precipitating (CEP) route. Ni(OH)2 NCs possess abundant active sites, sufficient diffusion channels, and accelerated electron transfer rate, which are beneficial for electrochemical kinetics. As a positive electrode for supercapacitors, the Ni(OH)2 NCs/Ni foam (NF) electrode presents a high specific capacitance of 539.8 F g(−1) at 1 A g(−1), which is much larger than that of broken Ni(OH)2 NCs/NF (Ni(OH)2 BNCs/NF, 87.3 F g(−1) at 1 A g(−1)). In addition, the Ni(OH)2 NCs/NF electrode still retains 96.9% of its initial specific capacitance after 2000 cycles. The asymmetric supercapacitor (ASC) devices were assembled using Ni(OH)2 NCs/NF and activated carbon (AC)/NF as positive and negative electrodes, respectively. The ASC exhibits a higher energy density of 23.3 Wh kg(−1) at a power density of 800 W kg(−1) compared to Ni(OH)2 BNCs/NF (3 Wh kg(−1) at 880 W kg(−1)). These results demonstrate that the Ni(OH)2 NCs/NF electrode presents potential applications in the field of energy storage. The design of cage-like structure paves an effective way to achieve high-performance electrode materials. ELECTRONIC SUPPLEMENTARY MATERIAL: The online version of this article (10.1186/s11671-019-3096-6) contains supplementary material, which is available to authorized users. Springer US 2019-08-02 /pmc/articles/PMC6890925/ /pubmed/31376019 http://dx.doi.org/10.1186/s11671-019-3096-6 Text en © The Author(s). 2019 Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
spellingShingle Nano Express
Tian, Liangliang
Yang, Tong
Pu, Wanrong
Zhang, Jinkun
Synthesis of Cubic Ni(OH)(2) Nanocages Through Coordinating Etching and Precipitating Route for High-Performance Supercapacitors
title Synthesis of Cubic Ni(OH)(2) Nanocages Through Coordinating Etching and Precipitating Route for High-Performance Supercapacitors
title_full Synthesis of Cubic Ni(OH)(2) Nanocages Through Coordinating Etching and Precipitating Route for High-Performance Supercapacitors
title_fullStr Synthesis of Cubic Ni(OH)(2) Nanocages Through Coordinating Etching and Precipitating Route for High-Performance Supercapacitors
title_full_unstemmed Synthesis of Cubic Ni(OH)(2) Nanocages Through Coordinating Etching and Precipitating Route for High-Performance Supercapacitors
title_short Synthesis of Cubic Ni(OH)(2) Nanocages Through Coordinating Etching and Precipitating Route for High-Performance Supercapacitors
title_sort synthesis of cubic ni(oh)(2) nanocages through coordinating etching and precipitating route for high-performance supercapacitors
topic Nano Express
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6890925/
https://www.ncbi.nlm.nih.gov/pubmed/31376019
http://dx.doi.org/10.1186/s11671-019-3096-6
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