Journal
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
Volume 55, Issue -, Pages 203-211Publisher
JOURNAL MATER SCI TECHNOL
DOI: 10.1016/j.jmst.2019.08.013
Keywords
Co-based hybrid; Carbon-based hybrid; Hollow morphology; Lithium ion battery; Oxygen evolution reaction
Funding
- National Natural Science Foundation of China [21875292and21706295]
- National Key Research and Development Program of China [2016YFA0202604]
- Science Starting Foundation of Hunan University [531118010182]
- Natural Science Foundation of Guangdong Province [2017A030313055]
- Fundamental Research Funds for the Central Universities [17lgjc36]
- Science and Technology Plan Project of Guangzhou, China [201804020025]
- China Postdoctoral Science Foundation [2018M640847]
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A porous hollow hybrid nanoarchitecture that consist of Co2P/Co nanoparticles confined in nitrogen-doped carbon (NC) and carbon nanotube (CNT) hollow nanocubes (denoted as H-Co2P/Co-NC/CNT) has been rational designed as anode for lithium ion batteries (LIBs) and electrocatalytic oxygen evolution reaction (OER). Such design involves simple synthetic process of using metal-organic frameworks (MOFs) as sacrificial precursor. The uniform cubic-shaped H-Co2P/Co-NC/CNT hybrid is investigated with several intriguing advantages, including improved structural integrity, superior electronic conductivity, hollow architecture and large specific surface area and so on. The as-synthesized H-Co2P/Co-NC/CNT displays excellent lithium storage behaviour in terms of long cycle life (> 500 cycles), remarkable rate performance (up to 5 A g(-1)), high reversible capacity (601 mA h g(-1) at 0.2 A g(-1)) and high pseudocapacitance behavior. Besides, it also delivers a superior catalytic property for OER with a small Tafel slope of 45.3 mV dec(-1) and overpotential of 256 mV (at 10 mA cm(-2)). The excellent performance can be attributed to the synergistic effect between Co2P/Co and NC/CNT, leading to enhanced conductivity through high pseudocapacitance contribution. This present work demonstrates that MOF-derived H-Co2P/Co-NC/CNT hybrid is a promising candidate for high-performance multifunctional energy systems. (C) 2020 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.
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