TY - JOUR
T1 - Rational Design and in-situ Synthesis of Ultra-Thin β-Ni(OH)2 Nanoplates for High Performance All-Solid-State Flexible Supercapacitors
AU - Wang, Shensong
AU - Tan, Changqin
AU - Fei, Linfeng
AU - Huang, Haitao
AU - Zhang, Shujun
AU - Huang, Hao
AU - Zhang, Xinyi
AU - Huang, Qiu An
AU - Hu, Yongming
AU - Gu, Haoshuang
N1 - Funding Information:
We thank Prof. S.H. Yang and Mr. Ju Huang in the State Key Laboratory of Biocatalysis and Enzyme Engineering in Hubei University for AFM technical support. Funding. This work was financially supported by the Special Funds for Public Science and Technology Innovation Platform Construction in Hubei Province (Project No. 2018BEC483) and the National Natural Science Foundation of China (No. 51972102).
Funding Information:
This work was financially supported by the Special Funds for Public Science and Technology Innovation Platform Construction in Hubei Province (Project No. 2018BEC483) and the National Natural Science Foundation of China (No. 51972102).
Publisher Copyright:
© Copyright © 2020 Wang, Tan, Fei, Huang, Zhang, Huang, Zhang, Huang, Hu and Gu.
PY - 2020/12/1
Y1 - 2020/12/1
N2 - The all-solid-state flexible supercapacitor (AFSC), one of the most flourishing energy storage devices for portable and wearable electronics, attracts substantial attentions due to their high flexibility, compact size, improved safety, and environmental friendliness. Nevertheless, the current AFSCs usually show low energy density, which extremely hinders their practical applications. Herein, ultra-thin β-Ni(OH)2 nanoplates with thickness of 2.4 ± 0.2 nm are in-situ grown uniformly on Ni foam by one step hydrothermal treatment. Thanks to the ultra-thin nanostructure, β-Ni(OH)2 nanoplates shows a specific capacitance of 1,452 F g−1 at the scan rate of 3 mV s−1. In addition, the assembled asymmetric AFSC [Ni(OH)2//Activated carbon] shows a specific capacitance of 198 F g−1. It is worth noting that the energy density of the AFSC can reach 62 Wh kg−1 while keeping a high power density of 1.5 kW kg−1. Furthermore, the fabricated AFSCs exhibit satisfied fatigue behavior and excellent flexibility, and about 82 and 86% of the capacities were retained after 5,000 cycles and folding over 1,500 times, respectively. Two AFSC in series connection can drive the electronic watch and to run stably for 10 min under the bending conditions, showing a great potential for powering portable and wearable electronic devices.
AB - The all-solid-state flexible supercapacitor (AFSC), one of the most flourishing energy storage devices for portable and wearable electronics, attracts substantial attentions due to their high flexibility, compact size, improved safety, and environmental friendliness. Nevertheless, the current AFSCs usually show low energy density, which extremely hinders their practical applications. Herein, ultra-thin β-Ni(OH)2 nanoplates with thickness of 2.4 ± 0.2 nm are in-situ grown uniformly on Ni foam by one step hydrothermal treatment. Thanks to the ultra-thin nanostructure, β-Ni(OH)2 nanoplates shows a specific capacitance of 1,452 F g−1 at the scan rate of 3 mV s−1. In addition, the assembled asymmetric AFSC [Ni(OH)2//Activated carbon] shows a specific capacitance of 198 F g−1. It is worth noting that the energy density of the AFSC can reach 62 Wh kg−1 while keeping a high power density of 1.5 kW kg−1. Furthermore, the fabricated AFSCs exhibit satisfied fatigue behavior and excellent flexibility, and about 82 and 86% of the capacities were retained after 5,000 cycles and folding over 1,500 times, respectively. Two AFSC in series connection can drive the electronic watch and to run stably for 10 min under the bending conditions, showing a great potential for powering portable and wearable electronic devices.
KW - all-solid-state supercapacitors
KW - energy density
KW - flexibility
KW - ultra-thin nanoplates
KW - β-Ni(OH)
UR - http://www.scopus.com/inward/record.url?scp=85099561061&partnerID=8YFLogxK
U2 - 10.3389/fchem.2020.602322
DO - 10.3389/fchem.2020.602322
M3 - Journal article
AN - SCOPUS:85099561061
SN - 2296-2646
VL - 8
JO - Frontiers in Chemistry
JF - Frontiers in Chemistry
M1 - 602322
ER -