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- W4319335455 endingPage "141762" @default.
- W4319335455 startingPage "141762" @default.
- W4319335455 abstract "Reserving void space for silicon oxide-based (SiOx-based) anodes has proved highly efficient in tackling their volume expansion and contraction upon lithiation/delithiation. Specially, hollow structure featured with sufficient internal spaces shows great promise in buffering the volumetric effect of SiOx. However, constructing a hollow structure, containing high-capacity SiOx components and high-conductivity carbon components, still remains a great challenge. In this work, we design a sequential coating strategy to initially construct sandwich hollow-structured high-capacity SiOx anode ([email protected]x@m-C) that consists of an innermost nitrogen-doped porous carbon network (NC), a middle mesoporous SiOx layer, and outermost mesoporous carbon (m-C) layer. The incorporation of high-capacity component SiOx (x < 2) via sequential coating process greatly improves the specific capacity of [email protected]x@m-C. Both of NC and m-C layers synergistically enhance the overall electronic conductivity of the anode. Moreover, the outermost m-C layer retards the direct contact between SiOx and electrolyte and effectively reduces the side reactions. As a result, the [email protected]x@m-C nanocubes delivers a capacity as high as 583 mAh g−1 at a high current density of 1 Ag-1 after 500 cycles, giving an excellent electrochemical performance." @default.
- W4319335455 created "2023-02-08" @default.
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- W4319335455 date "2023-03-01" @default.
- W4319335455 modified "2023-10-15" @default.
- W4319335455 title "Towards high-capacity lithium ion batteries:constructing hollow-structured SiO -based nanocube anode via a sequential coating strategy" @default.
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- W4319335455 doi "https://doi.org/10.1016/j.cej.2023.141762" @default.
- W4319335455 hasPublicationYear "2023" @default.
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