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Graphdiyne Oxide‐Based High‐Performance Rechargeable Aqueous Zn–MnO 2 Battery
Author(s) -
Li Jiaofu,
Chen Yanhuan,
Guo Jie,
Wang Fuhui,
Liu Huibiao,
Li Yuliang
Publication year - 2020
Publication title -
advanced functional materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 6.069
H-Index - 322
eISSN - 1616-3028
pISSN - 1616-301X
DOI - 10.1002/adfm.202004115
Subject(s) - faraday efficiency , materials science , battery (electricity) , current density , aqueous solution , membrane , stripping (fiber) , electrode , oxide , chemical engineering , zinc , electrochemistry , nanotechnology , metallurgy , composite material , chemistry , power (physics) , physics , biochemistry , quantum mechanics , engineering
Designing materials and architectures for improving the performance of rechargeable aqueous Zn–MnO 2 battery has gained extensive interest. The main challenge is to retain high capacity, superior rate performance capability, and long‐term stability capacity. This paper describes how a graphdiyne oxide (GDYO) membrane can endow Zn–MnO 2 batteries with high capacity, high rate capability, and long‐term stability. The specific capacity of the modified battery reaches as high as 300 mA h g −1 at a current density of 308 mA g −1 over 50 cycles. Even at a high current density of 3080 mA g −1 , this Zn–MnO 2 battery exhibits a capacity of 100 mA h g −1 over 2000 cycles. Moreover, the effect of the GDYO membrane and the reaction mechanism is elucidated. The GDYO membrane allows the reversible stripping/plating of zinc ions to maintain a Coulombic efficiency of ≈100% for 800 h. Therefore, it is believed that the GDYO membrane ensures well‐aligned ion transport and, thus, stabilizes the electrodes. This feasible approach toward Zn–MnO 2 batteries will open up alternative pathways for fabricating other high‐performance Zn‐ion batteries.