Please use this identifier to cite or link to this item:
Title: Rationally constructing a hierarchical two-dimensional NiCo metal–organic framework/graphene hybrid for highly efficient Li⁺ ion storage
Authors: Jin, Jun
Zhang, You-fang
Wang, Huanwen
Gong, Yansheng
Wang, Rui
He, Beibei
Xiao, Tuo
Zheng, Yun
Liu, Xianhu
Zhou, Kun
Keywords: Engineering::Materials
Issue Date: 2021
Source: Jin, J., Zhang, Y., Wang, H., Gong, Y., Wang, R., He, B., Xiao, T., Zheng, Y., Liu, X. & Zhou, K. (2021). Rationally constructing a hierarchical two-dimensional NiCo metal–organic framework/graphene hybrid for highly efficient Li⁺ ion storage. Materials Chemistry Frontiers, 5(12), 4589-4595.
Project: AcRF TIER 1-RG128/14
Journal: Materials Chemistry Frontiers
Abstract: Recently, metal-organic frameworks (MOFs) have been used to synthesize electrode materials such as porous carbon, metal oxides, and metal chalcogenides or directly utilized as electrodes. However, pristine MOF electrodes suffer from problems such as unstable structures and low electronic conductivity. Herein, we rationally construct a hierarchical two dimensional (2D) bimetallic NiCo MOF-graphene (NiCo MOF-G) hybrid through a facile solution reaction. The ultrathin bimetallic MOF nanosheets are directly anchored on the graphene sheets in a mixture solution of NiCl2, CoCl2, and benzendicarboxylic (BDC) acid. The -COOH groups in BDC2- can chelate with both Ni2+/Co2+ and graphene sheets to form a stable 2D NiCo MOF-G hybrid. The NiCo MOF-G electrode can provide shortened pathways for charge transport and a stable conjugated aromatic structure, showing good cycling stability. The graphene nanosheets can enhance its conductivity and structural stability, thus enhancing its electrochemical performances. The Li+ insertion/extraction mechanism of this NiCo MOF-G hybrid is studied in depth through potentiodynamic electrochemical impedance spectroscopy, ex situ scanning electron microscopy, and X-ray photoelectron spectroscopy. Attributed to these advantages, the 2D NiCo MOF-G hybrid demonstrates an exceptional capacity of 640 mA h g-1 at 1 A g-1 over 500 cycles and an excellent rate capability of 424 mA h g-1 at 3 A g-1.
ISSN: 2052-1537
DOI: 10.1039/D0QM01011A
Schools: School of Mechanical and Aerospace Engineering 
Research Centres: Nanyang Environment and Water Research Institute 
Rights: © 2021 The Royal Society of Chemistry and the Chinese Chemical Society. All rights reserved.
Fulltext Permission: none
Fulltext Availability: No Fulltext
Appears in Collections:MAE Journal Articles
NEWRI Journal Articles

Citations 20

Updated on Sep 21, 2023

Web of ScienceTM
Citations 20

Updated on Sep 21, 2023

Page view(s)

Updated on Sep 25, 2023

Google ScholarTM




Items in DR-NTU are protected by copyright, with all rights reserved, unless otherwise indicated.