期刊
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
卷 46, 期 69, 页码 34239-34251出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijhydene.2021.07.221
关键词
Layered double hydroxides (LDHs); MnCo-LDHs; Graphene; OER; ORR; Bifunctional catalysts
资金
- National Natural Science Foundation of China [22078071, 51774100, 51762006, 51864007]
- Natural Science Foundation of Guangdong Province [2020A1515010344]
- Maoming Science and Technology Project [mmkj2020032]
- Science and Technology Innovation Project of Guangdong Province College Students [733330, 733336]
- Guangxi Key Research and Development Program of Science and Technology (GUIKE) [AB17195065, AB17129011]
- Guangxi Technology Base and Talent Subject (GUIKE) [AD18126001, AD17195084]
A newly 3-D architecture of AGC/MnCo-LDHs nanocomposites was prepared in this study. The nanocomposites showed excellent electrochemical performances as efficient bifunctional catalysts, with the key factors being the 3-D porous architecture of MnCo-LDHs and carrier effect of AGC. These materials have broad application prospects in various fields.
As a multifunctional material with excellent performances, layered double hydroxides (LDHs) and their composites have broad application prospects in energy storage, catalysis, environmental protection, drug release and other fields. In this study, three-dimensional (3-D) graphene-like carbon nanosheets (AGC) were prepared by one-step synthesis method as active carrier materials, and then MnCo-LDHs nanoflowers assembled with ultrafine nanosheets were loaded on them to construct a newly 3-D architecture of AGC/MnCo-LDHs nanocomposites. The nanocomposites were characterized by XRD, SEM, TEM and XPS. The composite materials were assembled into OER and ORR electrodes for electrochemical measurements as efficient bifunctional catalysts. The favorable 3-D porous architecture (fast ion diffusion) of MnCo-LDHs and carrier effect of AGC (high electron conductivity) were the key contributing factors for their excellent electrochemical performances of nanocomposites. (c) 2021 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
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