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- W2884453399 abstract "These years, LiO2 batteries attract wide interest because of its high theoretical energy density. However, the catalytic activity and porous structure of cathode remains a great challenge. In this work, we developed a hierarchical porous graphene foam to serve as a battery cathode, which has much richer active sites for cathodic reaction and channels for Li+ transfer and O2 diffusion. The cathode exhibits a superior specific capacity as high as 9559 mAh g−1 at 57 mA g−1 and remains a high-rate capability of 3988 mAh g−1 at an increased current density of 285 mA g−1. Benefiting from the well-designed cathode structure, the battery can be stably operated for 150 cycles with a stable voltage profile and voltage efficiency up to 65%. The well-designed graphene has a potential to be a superior free-standing cathode to other carbon-based materials due to its good combination of its hierarchical and porous structure, large surface area, abundant defects and excellent mechanical stability." @default.
- W2884453399 created "2018-08-03" @default.
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- W2884453399 date "2018-08-01" @default.
- W2884453399 modified "2023-10-13" @default.
- W2884453399 title "In situ fabrication of porous graphene electrodes for high-performance lithium oxygen batteries" @default.
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- W2884453399 doi "https://doi.org/10.1016/j.ijhydene.2018.07.063" @default.
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