Constructing an artificial boundary to regulate solid electrolyte interface formation and synergistically enhance stability of nano-Si anodes
文献类型：期刊论文
| 作者 | Zhou, Chunyue1,2,3; Gong, Xuzhong1,2,3; Feng, Yueke2,3; Lu, Jijun1,2,3; Fu, Yulong2,3; Wang, Zhi1,2,3; Liu, Junhao1,2,3 |
| 刊名 | JOURNAL OF COLLOID AND INTERFACE SCIENCE
 |
| 出版日期 | 2022-08-01 |
| 卷号 | 619页码:158-167 |
| 关键词 | Nano-Si anode Artificial boundary SEI precursor Multifunction |
| ISSN号 | 0021-9797 |
| DOI | 10.1016/j.jcis.2022.03.111 |
| 英文摘要 | Low coulombic efficiency and poor cyclic stability are two common problems for silicon anodes. Therefore, it is of great significance to improve cycling performance and initial coulombic efficiency (ICE) via rational surface engineering on nano-Si anodes. Herein, a new nano-silicon anode is obtained by straightforward constructing a multifunctional polypyrrole protective layer on the surface of silicon nanoparticles, which is further used as the inner boundary of solid electrolyte interface (SEI) film. Specifically, the Li salt decomposition reaction between the electrolyte and silicon surface is effectively inhibited under the protection of the compact artificial boundary. The transfer of Li+ for forming the SEI film is selectively slower than that of lithiation/delithiation reaction. This further reduces the amount of SEI film, leading to a high ICE of 93.2% at 0.5 A g(-1) for modified nano-Si anodes. In addition, the flexible SEI precursor combined with the high proportion of organic components in SEIs not only accommodates the volume change of nano-silicon, but also suppresses accumulation of "waste SEI ", so the electrode can maintain a reversible capacity of 1153.2 mAh g(-1) at 1 A g(-1) after 500 cycles. This work provides important guidance for surface structural optimization of alloy-type anodes with high volume change.& nbsp; (C) 2022 Elsevier Inc. All rights reserved. |
| WOS关键词 | LITHIUM-ION BATTERIES ; SILICON NANOPARTICLES ; HIGH-ENERGY ; PERFORMANCE ; COMPOSITES |
| 资助项目 | National Key R&D Program of China[2018YFC1901801] ; National Natural Science Foundation of China[52074255] ; National Natural Science Foundation of China[51704271] ; National Natural Science Foundation of China[51934006] ; National Natural Science Foundation of China[21878299] |
| WOS研究方向 | Chemistry |
| 语种 | 英语 |
| WOS记录号 | WOS:000793370200008 |
| 出版者 | ACADEMIC PRESS INC ELSEVIER SCIENCE |
| 资助机构 | National Key R&D Program of China ; National Natural Science Foundation of China |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/53463]  |
| 专题 | 中国科学院过程工程研究所 |
| 通讯作者 | Wang, Zhi; Liu, Junhao |
| 作者单位 | 1.Univ Chinese Acad Sci, Sch Chem Engn, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Natl Engn Res Ctr Green Recycling Strateg Met Res, Inst Proc Engn, Key Lab Green Proc & Engn, Beijing 100190, Peoples R China 3.Chinese Acad Sci, Innovat Acad Green Manufacture, Beijing 100190, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhou, Chunyue,Gong, Xuzhong,Feng, Yueke,et al. Constructing an artificial boundary to regulate solid electrolyte interface formation and synergistically enhance stability of nano-Si anodes[J]. JOURNAL OF COLLOID AND INTERFACE SCIENCE,2022,619:158-167. |
| APA | Zhou, Chunyue.,Gong, Xuzhong.,Feng, Yueke.,Lu, Jijun.,Fu, Yulong.,...&Liu, Junhao.(2022).Constructing an artificial boundary to regulate solid electrolyte interface formation and synergistically enhance stability of nano-Si anodes.JOURNAL OF COLLOID AND INTERFACE SCIENCE,619,158-167. |
| MLA | Zhou, Chunyue,et al."Constructing an artificial boundary to regulate solid electrolyte interface formation and synergistically enhance stability of nano-Si anodes".JOURNAL OF COLLOID AND INTERFACE SCIENCE 619(2022):158-167. |
入库方式： OAI收割
来源：过程工程研究所
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