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- W2912985976 abstract "Lithium–oxygen (Li–O2) batteries are attracting more attention owing to their superior theoretical energy density compared to conventional Li-ion battery systems. With regards to the catalytically electrochemical reaction on a cathode, the electrocatalyst plays a key role in determining the performance of Li–O2 batteries. Herein, a new 3D hollow α-MnO2 framework (3D α-MnO2) with porous wall assembled by hierarchical α-MnO2 nanowires is prepared by a template-induced hydrothermal reaction and subsequent annealing treatment. Such a distinctive structure provides some essential properties for Li–O2 batteries including the intrinsic high catalytic activity of α-MnO2, more catalytic active sites of hierarchical α-MnO2 nanowires on 3D framework, continuous hollow network and rich porosity for the storage of discharge product aggregations, and oxygen diffusion. As a consequence, 3D α-MnO2 achieves a high specific capacity of 8583 mA h g−1 at a current density of 100 mA g−1, a superior rate capacity of 6311 mA h g−1 at 300 mA g−1, and a very good cycling stability of 170 cycles at a current density of 200 mA g−1 with a fixed capacity of 1000 mA h g−1. Importantly, the presented design strategy of 3D hollow framework in this work could be extended to other catalytic cathode design for Li–O2 batteries." @default.
- W2912985976 created "2019-02-21" @default.
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- W2912985976 date "2019-02-04" @default.
- W2912985976 modified "2023-10-15" @default.
- W2912985976 title "3D Hollow α‐MnO <sub>2</sub> Framework as an Efficient Electrocatalyst for Lithium–Oxygen Batteries" @default.
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- W2912985976 doi "https://doi.org/10.1002/smll.201804958" @default.
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