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Controllable metal–organic framework-derived Nico-layered double hydroxide nanosheets on vertical Graphene as mott–schottky heterostructure for highperformance hybrid supercapacitor

Layered double hydroxide (LDH) is considered a highly promising electrode material for supercapacitors (SCs) due to its high theoretical specific capacitance. However, LDH powders often suffer from poor electrical conductivity, structure pulverization, slow charge transport, and insufficient active...

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Main Authors: Mingliang He, Jia Qiao, Binghua Zhou, Jie Wang, Shien Guo, Gan Jet Hong Melvin, Mingxi Wang, Hironori Ogata, Yoong Ahm Kim, Masaki Tanemura, Shuwen Wang, Mauricio Terrones,, Morinobu Endo, Fei Zhang, Zhipeng Wang
Format: Article
Language:English
English
Published: ResearchGate 2024
Subjects:
TK1-9971 Electrical engineering. Electronics. Nuclear engineering
TK7800-8360 Electronics
Online Access:https://eprints.ums.edu.my/id/eprint/41950/1/ABSTRACT.pdf
https://eprints.ums.edu.my/id/eprint/41950/2/FULL%20TEXT.pdf
https://eprints.ums.edu.my/id/eprint/41950/
http://dx.doi.org/10.1002/sstr.202400207
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spelling my.ums.eprints.419502024-11-19T07:50:41Z https://eprints.ums.edu.my/id/eprint/41950/ Controllable metal–organic framework-derived Nico-layered double hydroxide nanosheets on vertical Graphene as mott–schottky heterostructure for highperformance hybrid supercapacitor Mingliang He Jia Qiao Binghua Zhou Jie Wang Shien Guo Gan Jet Hong Melvin Mingxi Wang Hironori Ogata Yoong Ahm Kim Masaki Tanemura Shuwen Wang Mauricio Terrones, Morinobu Endo Fei Zhang Zhipeng Wang TK1-9971 Electrical engineering. Electronics. Nuclear engineering TK7800-8360 Electronics Layered double hydroxide (LDH) is considered a highly promising electrode material for supercapacitors (SCs) due to its high theoretical specific capacitance. However, LDH powders often suffer from poor electrical conductivity, structure pulverization, slow charge transport, and insufficient active sites. Herein, a selfsupporting electrode with a Mott–Schottky heterostructure has been designed for high-performance SCs. The electrode consists of low crystallinity NiCo-LDH nanosheets and vertical graphene (VG) directly grown on carbon cloth. The LDH was converted from a metal–organic framework (MOF) by the sol–gel method. This self-supporting electrode provides fast charge transfer, reducing the pulverization effect and energy barrier. The Mott–Schottky heterostructure of LDH@VG regulates electron density and enhances electron transfer, as confirmed by density functional theory calculation. The optimized LDH@VG heterostructure electrode exhibits an excellent areal capacitance of 5513.8 mF cm 2 and rate capability of 82.1%. Furthermore, the fabricated hybrid SC demonstrates excellent energy density of 404.8 μWh cm 2 at 1.6 mW cm 2 and a remarkable cycling life, with a capacitance of 92.0% after 10 000 cycles. This work not only provides a simple dip-coating and MOF conversion method to synthesize heterojunction-based electrodes, but also broadens the horizon for designing advanced electrode materials for SCs. ResearchGate 2024 Article NonPeerReviewed text en https://eprints.ums.edu.my/id/eprint/41950/1/ABSTRACT.pdf text en https://eprints.ums.edu.my/id/eprint/41950/2/FULL%20TEXT.pdf Mingliang He and Jia Qiao and Binghua Zhou and Jie Wang and Shien Guo and Gan Jet Hong Melvin and Mingxi Wang and Hironori Ogata and Yoong Ahm Kim and Masaki Tanemura and Shuwen Wang and Mauricio Terrones, and Morinobu Endo and Fei Zhang and Zhipeng Wang (2024) Controllable metal–organic framework-derived Nico-layered double hydroxide nanosheets on vertical Graphene as mott–schottky heterostructure for highperformance hybrid supercapacitor. Small Structures, 5 (10). pp. 1-12. http://dx.doi.org/10.1002/sstr.202400207
institution Universiti Malaysia Sabah
building UMS Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaysia Sabah
content_source UMS Institutional Repository
url_provider http://eprints.ums.edu.my/
language English
English
topic TK1-9971 Electrical engineering. Electronics. Nuclear engineering
TK7800-8360 Electronics
spellingShingle TK1-9971 Electrical engineering. Electronics. Nuclear engineering
TK7800-8360 Electronics
Mingliang He
Jia Qiao
Binghua Zhou
Jie Wang
Shien Guo
Gan Jet Hong Melvin
Mingxi Wang
Hironori Ogata
Yoong Ahm Kim
Masaki Tanemura
Shuwen Wang
Mauricio Terrones,
Morinobu Endo
Fei Zhang
Zhipeng Wang
Controllable metal–organic framework-derived Nico-layered double hydroxide nanosheets on vertical Graphene as mott–schottky heterostructure for highperformance hybrid supercapacitor
description Layered double hydroxide (LDH) is considered a highly promising electrode material for supercapacitors (SCs) due to its high theoretical specific capacitance. However, LDH powders often suffer from poor electrical conductivity, structure pulverization, slow charge transport, and insufficient active sites. Herein, a selfsupporting electrode with a Mott–Schottky heterostructure has been designed for high-performance SCs. The electrode consists of low crystallinity NiCo-LDH nanosheets and vertical graphene (VG) directly grown on carbon cloth. The LDH was converted from a metal–organic framework (MOF) by the sol–gel method. This self-supporting electrode provides fast charge transfer, reducing the pulverization effect and energy barrier. The Mott–Schottky heterostructure of LDH@VG regulates electron density and enhances electron transfer, as confirmed by density functional theory calculation. The optimized LDH@VG heterostructure electrode exhibits an excellent areal capacitance of 5513.8 mF cm 2 and rate capability of 82.1%. Furthermore, the fabricated hybrid SC demonstrates excellent energy density of 404.8 μWh cm 2 at 1.6 mW cm 2 and a remarkable cycling life, with a capacitance of 92.0% after 10 000 cycles. This work not only provides a simple dip-coating and MOF conversion method to synthesize heterojunction-based electrodes, but also broadens the horizon for designing advanced electrode materials for SCs.
format Article
author Mingliang He
Jia Qiao
Binghua Zhou
Jie Wang
Shien Guo
Gan Jet Hong Melvin
Mingxi Wang
Hironori Ogata
Yoong Ahm Kim
Masaki Tanemura
Shuwen Wang
Mauricio Terrones,
Morinobu Endo
Fei Zhang
Zhipeng Wang
author_facet Mingliang He
Jia Qiao
Binghua Zhou
Jie Wang
Shien Guo
Gan Jet Hong Melvin
Mingxi Wang
Hironori Ogata
Yoong Ahm Kim
Masaki Tanemura
Shuwen Wang
Mauricio Terrones,
Morinobu Endo
Fei Zhang
Zhipeng Wang
author_sort Mingliang He
title Controllable metal–organic framework-derived Nico-layered double hydroxide nanosheets on vertical Graphene as mott–schottky heterostructure for highperformance hybrid supercapacitor
title_short Controllable metal–organic framework-derived Nico-layered double hydroxide nanosheets on vertical Graphene as mott–schottky heterostructure for highperformance hybrid supercapacitor
title_full Controllable metal–organic framework-derived Nico-layered double hydroxide nanosheets on vertical Graphene as mott–schottky heterostructure for highperformance hybrid supercapacitor
title_fullStr Controllable metal–organic framework-derived Nico-layered double hydroxide nanosheets on vertical Graphene as mott–schottky heterostructure for highperformance hybrid supercapacitor
title_full_unstemmed Controllable metal–organic framework-derived Nico-layered double hydroxide nanosheets on vertical Graphene as mott–schottky heterostructure for highperformance hybrid supercapacitor
title_sort controllable metal–organic framework-derived nico-layered double hydroxide nanosheets on vertical graphene as mott–schottky heterostructure for highperformance hybrid supercapacitor
publisher ResearchGate
publishDate 2024
url https://eprints.ums.edu.my/id/eprint/41950/1/ABSTRACT.pdf
https://eprints.ums.edu.my/id/eprint/41950/2/FULL%20TEXT.pdf
https://eprints.ums.edu.my/id/eprint/41950/
http://dx.doi.org/10.1002/sstr.202400207
_version_ 1817843829956411392
score 13.223943

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