Realizing stable lithium metal anode with surface-preferred crystal plane through Mg doping

Though, Li-Mg alloys are interesting alternate anode materials, a lack of deep discussion and insights persists regarding the relationship between its microstructure and electrochemical behaviors. Here, Mg doped Li anodes with surface-preferred crystal plane were prepared through melting and rolling...

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Veröffentlicht in:Journal of energy storage 2024-10, Vol.100, p.113559, Article 113559
Hauptverfasser: Nan, Wenzheng, Yan, Shaojiu, Zhang, Chengsong, Peng, Sikan, Li, Xinhao, Dai, Shenglong
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Sprache:eng
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Zusammenfassung:Though, Li-Mg alloys are interesting alternate anode materials, a lack of deep discussion and insights persists regarding the relationship between its microstructure and electrochemical behaviors. Here, Mg doped Li anodes with surface-preferred crystal plane were prepared through melting and rolling deformation. The relationship between the interface morphology evolution and surface structure characteristics of the Li anode was revealed through modeling and experiments, the findings highlighted that the unprecedented reversibility of the as-prepared Li-Mg alloy electrode. Consequently, a Mg-added Li anode with strongest textured surface can ensure a long cyclic life of more than 1400 h for symmetric cells, along with enabling long cycling stability with life spans of over 350 cycles for LiFePO4 pouch cells. This work provides new insights into the design of high-performance lithium anodes for lithium ion batteries. [Display omitted] •New insights into the structure-activity relationship of Li anode was provided.•A novel Li anode with desirable (200) texture is prepared via a simple method.•LiFePO4 pouch cells with the modified anode present superior stable cycling.•This work provides new insights into the design of high-performance Li anodes.
ISSN:2352-152X
DOI:10.1016/j.est.2024.113559