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Weng, Yu-Ting; Liu, Hao-Wen; Pei, Allen; Shi, FeiFei; Wang, Hansen; Lin, Chih-Yuan; Huang, Sheng-Siang; Su, Lin-Ya; Hsu, Jyh-Ping; Fang, Chia-Chen; Cui, Yi; Wu, Nae-Lih
Nature communications, 12/2019, Letnik: 10, Številka: 1Journal Article
High coulombic efficiency and dendrite suppression in carbonate electrolytes remain challenges to the development of high-energy lithium ion batteries containing lithium metal anodes. Here we demonstrate an ultrathin (≤100 nm) lithium-ion ionomer membrane consisting of lithium-exchanged sulfonated polyether ether ketone embedded with polyhedral oligosilsesquioxane as a coating layer on copper or lithium for achieving efficient and stable lithium plating-stripping cycles in a carbonate-based electrolyte. Operando analyses and theoretical simulation reveal the remarkable ability of the ionomer coating to enable electric field homogenization over a considerably large lithium-plating surface. The membrane coating, serving as an artificial solid-electrolyte interphase filter in minimizing parasitic reactions at the electrolyte-electrode interface, enables dendrite-free lithium plating on copper with outstanding coulombic efficiencies at room and elevated (50 °C) temperatures. The membrane coated copper demonstrates itself as a promising current collector for manufacturing high-quality pre-plated lithium thin-film anode.
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in: SICRIS
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