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Dealloying-induced modulation upon porous layer depth of three-dimensional copper current collector for improving lithium plating/stripping capability. Electrochim Acta 2022. [DOI: 10.1016/j.electacta.2022.141337] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Hagopian A, Touja J, Louvain N, Stievano L, Filhol JS, Monconduit L. Importance of Halide Ions in the Stabilization of Hybrid Sn-Based Coatings for Lithium Electrodes. ACS APPLIED MATERIALS & INTERFACES 2022; 14:10319-10326. [PMID: 35175035 DOI: 10.1021/acsami.1c22889] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
The properties of hybrid Sn-based artificial solid electrolyte interphase (SEI) layers in protecting Li-metal electrodes toward surface instabilities were investigated via a combined experimental and theoretical approach. The performance of coating layers can be coherently explained based on the nature of the coating species. Notably, when starting from a chloride precursor, the hybrid coating layer is formed by an intimate mixture of Li7Sn2 and LiCl: the first ensures a high bulk ionic conductivity, while the second forms an external layer allowing a fast surface diffusion of Li+ to avoid dendrite growth, a low surface tension to guarantee the thermodynamic stability of the protective layer, and a negative underneath plating energy (UPE) to promote lithium plating at the interface between the Li metal and the coating layer. The synergy between the two components and, in particular, the crucial role of LiCl in the promotion of such an underneath plating mechanism are shown to be the key properties to improve the performance of artificial SEI layers.
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Affiliation(s)
- Arthur Hagopian
- ICGM, Univ Montpellier, CNRS, ENSCM, 34293 Montpellier, France
- Réseau sur le Stockage Electrochimique de l'Energie (RS2E), Hub de l'Energie, FR CNRS 3459 Amiens, France
| | - Justine Touja
- ICGM, Univ Montpellier, CNRS, ENSCM, 34293 Montpellier, France
| | - Nicolas Louvain
- ICGM, Univ Montpellier, CNRS, ENSCM, 34293 Montpellier, France
- Réseau sur le Stockage Electrochimique de l'Energie (RS2E), Hub de l'Energie, FR CNRS 3459 Amiens, France
| | - Lorenzo Stievano
- ICGM, Univ Montpellier, CNRS, ENSCM, 34293 Montpellier, France
- Réseau sur le Stockage Electrochimique de l'Energie (RS2E), Hub de l'Energie, FR CNRS 3459 Amiens, France
| | - Jean-Sébastien Filhol
- ICGM, Univ Montpellier, CNRS, ENSCM, 34293 Montpellier, France
- Réseau sur le Stockage Electrochimique de l'Energie (RS2E), Hub de l'Energie, FR CNRS 3459 Amiens, France
| | - Laure Monconduit
- ICGM, Univ Montpellier, CNRS, ENSCM, 34293 Montpellier, France
- Réseau sur le Stockage Electrochimique de l'Energie (RS2E), Hub de l'Energie, FR CNRS 3459 Amiens, France
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