期刊
NATURE COMMUNICATIONS
卷 10, 期 -, 页码 -出版社
NATURE PUBLISHING GROUP
DOI: 10.1038/s41467-019-12857-4
关键词
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资金
- KACST
- NU
- Soft and Hybrid Nanotechnology Experimental (SHyNE) Resource [NSF ECCS-1542205]
- MRSEC program at the Materials Research Center [NSF DMR-1720139]
- International Institute for Nanotechnology (IIN)
- Keck Foundation
- State of Illinois, through the IIN
- Air Force Office of Scientific Research [FA9550-17-1-0348]
- National Science Foundation [CHE-1709888]
- Air Force Research laboratory [FA8650-15-2-5518]
Currently, there is considerable interest in developing advanced rechargeable batteries that boast efficient distribution of electricity and economic feasibility for use in large-scale energy storage systems. Rechargeable aqueous zinc batteries are promising alternatives to lithium-ion batteries in terms of rate performance, cost, and safety. In this investigation, we employ Cu-3(HHTP)(2), a two-dimensional (2D) conductive metal-organic framework (MOF) with large one-dimensional channels, as a zinc battery cathode. Owing to its unique structure, hydrated Zn2+ ions which are inserted directly into the host structure, Cu-3(HHTP)(2), allow high diffusion rate and low interfacial resistance which enable the Cu-3(HHTP) 2 cathode to follow the intercalation pseudocapacitance mechanism. Cu-3(HHTP)(2) exhibits a high reversible capacity of 228 mAh g(-1) at 50 mA g(-1). At a high current density of 4000 mA g(-1) (-18 C), 75.0% of the initial capacity is maintained after 500 cycles. These results provide key insights into high-performance, 2D conductive MOF designs for battery electrodes.
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