Journal
ACS APPLIED ENERGY MATERIALS
Volume 4, Issue 3, Pages 2761-2768Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsaem.1c00043
Keywords
sodium ion battery; heterostructure; ZIF-8; metal organic framework; two-dimensional sheet
Funding
- National Natural Science Foundation of China [51871059, 52071086, 52071083, 51922031]
- National Key Research and Development Program of China [2018YFB1502105]
- National Major Scientific Research Equipment of China [51727801]
- Science and Technology Commission of Shanghai Municipality [20ZR1405400]
- Pujiang Talent Program of Shanghai [20PJ1401400]
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A two-dimensional sheet morphology MOF-coated CuGaSe2@ZnSe-NC heterostructure has been synthesized and utilized as an anode material for sodium ion batteries, showing stable capacity of 276 mAh g(-1) over 2000 cycles at a high current density of 2.0 A g(-1).
Sodium ion batteries (SIBs) are regarded as a promising alternative to lithium ion batteries, while their application is hindered by the lack of good anode materials. Integrating morphology, structure, and ingredient modulation in one material is rather desired for developing the candidates. Herein, the MOF-coated CuGaSe2@ZnSe-NC heterostructure with a two-dimensional sheet morphology has been successfully synthesized and further been utilized as an anode material for SIBs. Benefitting from high conductivity due to the carbon coating derived from MOF and the built-in electric field in CuGaSe2@ZnSe-NC heterostructure as well as the short diffusion pathway due to the two-dimensional morphology, CuGaSe2@ZnSe-NC shows a stable capacity of 276 mAh g(-1) over 2000 cycles at a high current density of 2.0 A g(-1).
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