Stainless Steel-Like Passivation Inspires Persistent Silicon Anodes for Lithium-Ion Batteries.

Lin, Jie; Wang, Laisen; Xie, Qingshui; Luo, Qing; Peng, Dong-Liang; Buddie Mullins, C; Heller, Adam

Lin, Jie; Wang, Laisen; Xie, Qingshui; Luo, Qing; Peng, Dong-Liang; Buddie Mullins, C; Heller, Adam.

Afiliação

Lin J; College of Materials, State Key Laboratory for Physical Chemistry of Solid Surfaces, Fujian Key Laboratory of Surface and Interface Engineering for High Performance Materials, and Collaborative Innovation Center of Chemistry for Energy Materials, Xiamen University, Xiamen, Fujian, 361005, P. R. Chin
Wang L; College of Materials, State Key Laboratory for Physical Chemistry of Solid Surfaces, Fujian Key Laboratory of Surface and Interface Engineering for High Performance Materials, and Collaborative Innovation Center of Chemistry for Energy Materials, Xiamen University, Xiamen, Fujian, 361005, P. R. Chin
Xie Q; College of Materials, State Key Laboratory for Physical Chemistry of Solid Surfaces, Fujian Key Laboratory of Surface and Interface Engineering for High Performance Materials, and Collaborative Innovation Center of Chemistry for Energy Materials, Xiamen University, Xiamen, Fujian, 361005, P. R. Chin
Luo Q; College of Materials, State Key Laboratory for Physical Chemistry of Solid Surfaces, Fujian Key Laboratory of Surface and Interface Engineering for High Performance Materials, and Collaborative Innovation Center of Chemistry for Energy Materials, Xiamen University, Xiamen, Fujian, 361005, P. R. Chin
Peng DL; College of Materials, State Key Laboratory for Physical Chemistry of Solid Surfaces, Fujian Key Laboratory of Surface and Interface Engineering for High Performance Materials, and Collaborative Innovation Center of Chemistry for Energy Materials, Xiamen University, Xiamen, Fujian, 361005, P. R. Chin
Buddie Mullins C; Department of Chemical Engineering, Department of Chemistry, and Texas Materials Institute, University of Texas at Austin, Austin, TX 78712, USA.
Heller A; Department of Chemical Engineering, Department of Chemistry, and Texas Materials Institute, University of Texas at Austin, Austin, TX 78712, USA.

Angew Chem Int Ed Engl ; 62(11): e202216557, 2023 Mar 06.

Article em En | MEDLINE | ID: mdl-36510474

ABSTRACT

ABSTRACT

Passivation of stainless steel by additives forming mass-transport blocking layers is widely practiced, where Cr element is added into bulk Fe-C forming the Cr2 O3 -rich protective layer. Here we extend the long-practiced passivation concept to Si anodes for lithium-ion batteries, incorporating the passivator of LiF/Li2 CO3 into bulk Si. The passivation mechanism is studied by various ex situ characterizations, redox peak contour maps, thickness evolution tests, and finite element simulations. The results demonstrate that the passivation can enhance the (de)lithiation of Li-Si alloys, induce the formation of F-rich solid electrolyte interphase, stabilize the Si/LiF/Li2 CO3 composite, and mitigate the volume change of Si anodes upon cycling. The 3D passivated Si anode can fully retain a high capacity of 3701âmAh g-1 after 1500 cycles and tolerate high rates up to 50C. This work provides insight into how to construct durable Si anodes through effective passivation.

Palavras-chave

Bulk Passivation; Lithium Carbonate; Lithium Fluoride; Silicon Anode; Volume Change

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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: Angew Chem Int Ed Engl Ano de publicação: 2023 Tipo de documento: Article