In Situ Oriented Mn Deficient ZnMn2O4@C Nanoarchitecture for Durable Rechargeable Aqueous Zinc‐Ion Batteries
- Title
- In Situ Oriented Mn Deficient ZnMn2O4@C Nanoarchitecture for Durable Rechargeable Aqueous Zinc‐Ion Batteries
- Author
- 선양국
- Keywords
- aqueous Zn‐; ion batteries; in situ grown Mn deficient ZnMn2O4@C; ZnO‐; MnO@C nanocomposite
- Issue Date
- 2021-02
- Publisher
- WILEY
- Citation
- ADVANCED SCIENCE, v. 8, NO 4, article no. 2002636, Page. 1-14
- Abstract
- Manganese (Mn)-based cathode materials have garnered huge research interest for rechargeable aqueous zinc-ion batteries (AZIBs) due to the abundance and low cost of manganese and the plentiful advantages of manganese oxides including their different structures, wide range of phases, and various stoichiometries. A novel in situ generated Mn-deficient ZnMn2O4@C (Mn-d-ZMO@C) nanoarchitecture cathode material from self-assembly of ZnO-MnO@C for rechargeable AZIBs is reported. Analytical techniques confirm the porous and crystalline structure of ZnO-MnO@C and the insitu growth of Mn deficient ZnMn2O4@C. The Zn/Mn-d-ZMO@C cell displays a promising capacity of 194 mAh g−1 at a current density of 100 mA g−1 with 84% of capacity retained after 2000 cycles (at 3000 mA g−1 rate). The improved performance of this cathode originates from in situ orientation, porosity, and carbon coating. Additionally, first-principles calculations confirm the high electronic conductivity of Mn-d-ZMO@C cathode. Importantly, a good capacity retention (86%) is obtained with a year-old cell (after 150 cycles) at 100 mA g−1 current density. This study, therefore, indicates that the in situ grown Mn-d-ZMO@C nanoarchitecture cathode is a promising material to prepare a durable AZIB.
- URI
- https://onlinelibrary.wiley.com/doi/10.1002/advs.202002636https://repository.hanyang.ac.kr/handle/20.500.11754/175638
- ISSN
- 2198-3844
- DOI
- 10.1002/advs.202002636
- Appears in Collections:
- COLLEGE OF ENGINEERING[S](공과대학) > ENERGY ENGINEERING(에너지공학과) > Articles
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- In Situ Oriented Mn Deficient ZnMn2O4@CNanoarchitecture for Durable Rechargeable AqueousZinc-Ion Batteries.pdfDownload
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