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http://hdl.handle.net/10397/90889
Title: | Simultaneously regulating uniform Zn2+ flux and electron conduction by MOF/rGO interlayers for high-performance Zn anodes | Authors: | Wang, Z Dong, L Huang, W Jia, H Zhao, Q Wang, Y Fei, B Pan, F |
Issue Date: | Dec-2021 | Source: | Nano-micro letters, Dec. 2021, v. 13, no. 1, 73 | Abstract: | Owing to the merits of low cost, high safety and environmental benignity, rechargeable aqueous Zn-based batteries (ZBs) have gained tremendous attention in recent years. Nevertheless, the poor reversibility of Zn anodes that originates from dendrite growth, surface passivation and corrosion, severely hinders the further development of ZBs. To tackle these issues, here we report a Janus separator based on a Zn-ion conductive metal–organic framework (MOF) and reduced graphene oxide (rGO), which is able to regulate uniform Zn2+ flux and electron conduction simultaneously during battery operation. Facilitated by the MOF/rGO bifunctional interlayers, the Zn anodes demonstrate stable plating/stripping behavior (over 500 h at 1 mA cm−2), high Coulombic efficiency (99.2% at 2 mA cm−2 after 100 cycles) and reduced redox barrier. Moreover, it is also found that the Zn corrosion can be effectively retarded through diminishing the potential discrepancy on Zn surface. Such a separator engineering also saliently promotes the overall performance of Zn|MnO2 full cells, which deliver nearly 100% capacity retention after 2000 cycles at 4 A g−1 and high power density over 10 kW kg−1. This work provides a feasible route to the high-performance Zn anodes for ZBs.[Figure not available: see fulltext.]. | Keywords: | Janus separator Metal–organic framework Reduced graphene oxide Zn anode Zn-based battery |
Publisher: | Springer | Journal: | Nano-micro letters | ISSN: | 2311-6706 | EISSN: | 2150-5551 | DOI: | 10.1007/s40820-021-00594-7 | Rights: | © The Author(s) 2021 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of his licence, visit http://creativecommons.org/licenses/by/4.0/. The following publication Wang, Z., Dong, L., Huang, W. et al. Simultaneously Regulating Uniform Zn2+ Flux and Electron Conduction by MOF/rGO Interlayers for High-Performance Zn Anodes. Nano-Micro Lett. 13, 73 (2021) is available at https://doi.org/10.1007/s40820-021-00594-7 |
Appears in Collections: | Journal/Magazine Article |
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Wang2021_Article_SimultaneouslyRegulatingUnifor.pdf | 2.6 MB | Adobe PDF | View/Open |
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