| 光沉积制备pSi@CoOx高性能锂离子电池负极材料 |
| Photodeposition for Preparing Porous Si@CoOx Composites as High-Performance Anode Material for Lithium-Ion Batteries |
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| 摘要: 选用微米级商业硅铝合金粉末作为原料，采用酸刻蚀、光沉积和后续的还原过程制备了CoOx纳米片原位包覆的多孔硅复合材料。探究了不同光沉积时间对pSi@CoOx材料形貌及其储锂性能的影响。CoOx纳米片的引入有效改善了材料的导电性并提高了材料的结构稳定性，即使在1 A·g-1的电流密度下循环200圈后，pSi@CoOx-5的比容量仍能保持774.2 mAh·g-1。 |
| 关键词: Si-Al合金 多孔硅 光沉积 CoOx纳米片 锂离子电池 |
| 基金项目: 国家自然科学基金（No.21373182）资助。 |
| Abstract: In this work, micron-sized commercial Si-Al alloy powders were used as raw material to in-situ prepare porous silicon/CoOx composites by acid etching, photochemical deposition and subsequently reduction process. The effects of different photodeposition times on the morphologies and lithium storage properties of pSi@CoOx materials were explored. The introduction of CoOx nanosheets improves the electronic conductivity and structural stability of the composites. Even at the current density of 1 A·g-1, pSi@CoOx-5 delivered a specific capacity of 774.2 mAh·g-1 after 200 cycles. |
| Keywords: Si-Al alloy porous silicon photodeposition CoOx nanosheet lithium-ion battery |
| 投稿时间：2021-03-21 修订日期：2021-07-12 |
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| 龚俊捷,王建明.光沉积制备pSi@CoOx高性能锂离子电池负极材料[J].无机化学学报,2021,37(10):1773-1781. |
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