DataVXSmallPaper
journal article·2026-07Open access

Pre‐Fluorinated SEI by Catalyzing a Parasitic Reaction Toward Stable Silicon Anodes

Tianze Xu, Ziyu Lou, Qinyi Zhan, Ziyun Zhao, Qianhui Yin, Zhenshen Li, Xiangze Xin, Qiang Li, Minghui Dong, Shuoyi Chen, Zilin Ye, Junwei Han, Jing Xiao, Wei Wei, Li Wang, Shichao Wu, Quan‐Hong Yang

Small· Volume 22· Issue 38
Publisher pageOpen full text
Source abstract

Abstract

ABSTRACT Constructing a robust solid electrolyte interphase (SEI) is critical for batteries. Conventional SEI is formed and repaired through cyclic electrochemical processes that consume active lithium from the cathode, leading to Coulombic losses and capacity decay. Here, we demonstrate an electron‐decoupled chemical approach that builds a robust pre‐fluorinated SEI through the catalytic reaction of parasitic LiPF 6 hydrolysis at the interface between electrolyte and a designed nanoscale Cu/SiO x catalytic layer (CL) on micro‐sized silicon. The formed LiF‐rich SEI is further fortified by the electrocatalytic conversion of the preceding HF byproducts. The resulting anode exhibits a 7% improved initial Coulombic efficiency of 89.3%, remarkable stability over 1600 cycles, and superior rate performance (2670 mAh g −1 at 5 A g −1 ). This strategy of catalytic pre‐fluorination offers a powerful pathway to stabilize dynamic electrode interfaces.
Source: crossref · Quality: baseline

Research context

Energy storageNanomaterialsCatalysis & surfaces

OpenAlex topics: Advanced Battery Materials and Technologies · Advancements in Battery Materials · Fiber-reinforced polymer composites

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Nanoyang Group, Tianjin Key Laboratory of Advanced Carbon and Electrochemical Energy Storage, School of Chemical Engineering and Technology, National Industry‐Education Integration Platform of Energy Storage, and Collaborative Innovation Center of Chemical Science and Engineering Tianjin University Tianjin China

State Key Laboratory of Chemical Engineering and Low‐Carbon Technology Tianjin University Tianjin China

Haihe Laboratory of Sustainable Chemical Transformations Tianjin China

The International Joint Institute of Tianjin University Tianjin University Tianjin China

Shenzhen Geim Graphene Center Engineering Laboratory for Functionalized Carbon Materials, Tsinghua Shenzhen International Graduate School Tsinghua University Shenzhen China

Research Center on Advanced Chemical Engineering and Energy Materials China University of Petroleum (East China) Qingdao China

Zettawatt Energy (Changzhou) Technology Co., Ltd Liyang China

Funding

National Key Research and Development Program of China · National Natural Science Foundation of China · Natural Science Foundation of Tianjin Municipality · Fundamental Research Funds for the Central Universities

References (50)

Show source-provided references
1. 10.1038/nnano.2017.1610.1038/nnano.2017.16 ↗
2. 10.1038/s41560‐019‐0338‐x10.1038/s41560‐019‐0338‐x ↗
3. 10.1038/3510464410.1038/35104644 ↗
4. 10.1002/adfm.20242274310.1002/adfm.202422743 ↗
5. 10.1016/j.joule.2021.03.02410.1016/j.joule.2021.03.024 ↗
6. 10.1021/cr030203g10.1021/cr030203g ↗
7. 10.1002/aenm.20210004610.1002/aenm.202100046 ↗
8. 10.1149/1.212885910.1149/1.2128859 ↗
9. 10.1126/science.aal437310.1126/science.aal4373 ↗
10. 10.1038/natrevmats.2016.1310.1038/natrevmats.2016.13 ↗
11. 10.1038/s41560‐020‐0601‐110.1038/s41560‐020‐0601‐1 ↗
12. 10.1093/nsr/nwab01210.1093/nsr/nwab012 ↗
13. 10.1021/acs.nanolett.5c0492810.1021/acs.nanolett.5c04928 ↗
14. 10.1021/acsnano.5c1789110.1021/acsnano.5c17891 ↗
15. 10.1038/s41565‐019‐0618‐410.1038/s41565‐019‐0618‐4 ↗
16. 10.1021/acs.nanolett.5b0247910.1021/acs.nanolett.5b02479 ↗
17. 10.1002/anie.20240025410.1002/anie.202400254 ↗
18. 10.1038/s41557‐019‐0304‐z10.1038/s41557‐019‐0304‐z ↗
19. 10.1021/acsenergylett.4c0151710.1021/acsenergylett.4c01517 ↗
20. 10.1016/j.joule.2019.08.01810.1016/j.joule.2019.08.018 ↗
21. 10.1002/adma.20170610210.1002/adma.201706102 ↗
22. 10.1038/s41560‐019‐0464‐510.1038/s41560‐019‐0464‐5 ↗
23. 10.1016/j.chempr.2017.10.01710.1016/j.chempr.2017.10.017 ↗
24. 10.1002/anie.20180151310.1002/anie.201801513 ↗
25. 10.1007/s11696‐020‐01061‐010.1007/s11696‐020‐01061‐0 ↗
26. 10.1016/j.surfin.2024.10529110.1016/j.surfin.2024.105291 ↗
27. 10.1016/j.cej.2016.12.02710.1016/j.cej.2016.12.027 ↗
28. 10.1021/ja303415310.1021/ja3034153 ↗
29. 10.1021/acscatal.2c0038010.1021/acscatal.2c00380 ↗
30. 10.1039/C6NR08126F10.1039/C6NR08126F ↗
31. 10.1002/adma.20100178410.1002/adma.201001784 ↗
32. 10.1021/la104535410.1021/la1045354 ↗
33. 10.1016/j.mssp.2019.04.04210.1016/j.mssp.2019.04.042 ↗
34. 10.1016/j.molcata.2013.09.03810.1016/j.molcata.2013.09.038 ↗
35. 10.1016/j.jcat.2008.04.02110.1016/j.jcat.2008.04.021 ↗
36. 10.1039/C4CY01148A10.1039/C4CY01148A ↗
37. 10.1038/s41467‐018‐05757‐610.1038/s41467‐018‐05757‐6 ↗
38. 10.1016/j.joule.2024.07.01110.1016/j.joule.2024.07.011 ↗
39. 10.1038/s41467‐025‐60191‐910.1038/s41467‐025‐60191‐9 ↗
40. 10.1021/jacs.4c0211510.1021/jacs.4c02115 ↗
41. 10.1038/s41929‐018‐0047‐z10.1038/s41929‐018‐0047‐z ↗
42. 10.1002/adma.20220361710.1002/adma.202203617 ↗
43. 10.1002/aenm.20250167910.1002/aenm.202501679 ↗
44. 10.1038/nenergy.2015.2910.1038/nenergy.2015.29 ↗
45. 10.1002/smll.20180075210.1002/smll.201800752 ↗
46. 10.1002/adma.20250374510.1002/adma.202503745 ↗
47. 10.1038/nchem.180210.1038/nchem.1802 ↗
48. 10.1016/j.joule.2018.02.01210.1016/j.joule.2018.02.012 ↗
49. 10.1038/s41467‐019‐09510‐510.1038/s41467‐019‐09510‐5 ↗
50. 10.1002/aenm.20210356510.1002/aenm.202103565 ↗