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研究生英文文献汇报-化学化工

上传者:塑料瓶子 |  格式:ppt  |  页数:21 |  大小:1305KB

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ed/de-alloyed with lithium and offers a theoretical capacity as high as 4200 mAh g−1 with a low working potential.(0.4V Vs Li+/Li)? (merits)?The volume change in the course of the battery operation would cause severe mechanical damage of Si electrodes and leads to rapid capacity fading during cycling.? (drawbacks)Р9Р10РIntroductionР1.3 Silicon as a Candidate?Many reports aiming to the volume changeРNanostructured Si materials, such as nanowires, nanofilms, nanotubes, have been widely reported to alleviate the pulverization problem because absolute local volume change is expected to be minimized in nanostructures. РAnother option is to blend Si-based materials with a buffering matrix to dissipate local mechanical stress and the large volumetric change of Si anode during the cycling process.

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