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25.11.2023 | Original Article

High critical current density in Li_6.4La₃Zr_1.4Ta_0.6O₁₂ electrolyte via interfacial engineering with complex hydride

verfasst von: Ying-Tong Lv, Teng-Fei Zhang, Zhao-Tong Hu, Guang-Lin Xia, Ze-Ya Huang, Zhen-Hua Liu, Li-Hua Que, Cai-Ting Yuan, Fang-Qin Guo, Takayuki Ichikawa, Xue-Bin Yu

Erschienen in: Rare Metals | Ausgabe 2/2024

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Abstract

Garnet-type solid-state batteries (SSBs) are considered to be one of the most promising candidates to realize next-generation lithium metal batteries with high energy density and safety. However, the dendrite-induced short-circuit and the poor interfacial contact impeded the practical application. Herein, interface engineering to achieve low interfacial resistance without high temperature calcination was developed, which Li_6.4La₃Zr_1.4Ta_0.6O₁₂ (LLZTO) was simply coated with complex hydride (Li₄(BH₄)₃I (3L1L)) in various mass ratios n(Li₄(BH₄)₃I)-(100−n)LLZTO (10 ≤ n ≤ 40). The interfacial conductivity increases by more than three orders of magnitude from 8.29 × 10⁻⁶ S·cm⁻¹to 1.10 × 10⁻² S·cm⁻¹. Symmetric Li cells exhibit a high critical current density (CCD) of 4.0 mA·cm⁻² and an excellent cycling stability for 200 h at 4.0 mA·cm⁻². SSBs with polymeric sulfur-polyacrylonitrile (SPAN) cathode achieve a high discharge capacity of 1149 mAh·g⁻¹ with a capacity retention of 91% after 100 cycles (0.2 C). This attempt guides a simple yet efficient strategy for obtaining a stable Li/LLZTO interface, which would promote the development of solid-state batteries.

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Vorheriger Artikel One-step construction of strongly coupled Co3V2O8/Co3O4/MXene heterostructure via in-situ Co-F bonds for high performance all-solid-state asymmetric supercapacitors

Nächster Artikel Renewable conversion of coal gangue to 13-X molecular sieve for Cd2+-containing wastewater adsorption performance

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Titel: High critical current density in Li6.4La3Zr1.4Ta0.6O12 electrolyte via interfacial engineering with complex hydride
verfasst von: Ying-Tong Lv
Teng-Fei Zhang
Zhao-Tong Hu
Guang-Lin Xia
Ze-Ya Huang
Zhen-Hua Liu
Li-Hua Que
Cai-Ting Yuan
Fang-Qin Guo
Takayuki Ichikawa
Xue-Bin Yu
Publikationsdatum: 25.11.2023
Verlag: Nonferrous Metals Society of China
Erschienen in: Rare Metals / Ausgabe 2/2024
Print ISSN: 1001-0521
Elektronische ISSN: 1867-7185
DOI: https://doi.org/10.1007/s12598-023-02479-7

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