https://scholars.lib.ntu.edu.tw/handle/123456789/629079
標題: | Spontaneous In Situ Formation of Lithium Metal Nitride in the Interface of Garnet-Type Solid-State Electrolyte by Tuning of Molten Lithium | 作者: | Liao, Yu-Kai Tong, Zizheng Liu, Shin-An Huang, Jui-Hsiung RU-SHI LIU Hu, Shu-Fen |
關鍵字: | Li-Ga-N; co-molten; garnet; lithiophilic; solid-state Li-metal batteries | 公開日期: | 9-二月-2023 | 出版社: | AMER CHEMICAL SOC | 卷: | 15 | 期: | 7 | 起(迄)頁: | 10283 | 來源出版物: | ACS applied materials & interfaces | 摘要: | All-solid-state lithium-ion batteries (ASSLIBs) have attracted much attention owing to their high energy density and safety and are known as the most promising next-generation LIBs. The biggest advantage of ASSLIBs is that it can use lithium metal as the anode without any safety concerns. This study used a high-conductivity garnet-type solid electrolyte (Li6.75La3Zr1.75Ta0.25O12, LLZTO) and Li-Ga-N composite anode synthesized by mixing melted Li with GaN. The interfacial resistance was reduced from 589 to 21 Ω cm2, the symmetry cell was stably cycled for 1000 h at a current density of 0.1 mA cm-2 at room temperature, and the voltage range only changed from ±30 to ±40 mV. The full cell of Li-Ga-N|LLZTO|LFP exhibited a high first-cycle discharge capacity of 152.2 mAh g-1 and Coulombic efficiency of 96.5% and still maintained a discharge capacity retention of 91.2% after 100 cycles. This study also demonstrated that Li-Ga-N had been shown as two layers. Li3N shows more inclined to be closer to the LLZTO side. This method can help researchers understand what interface improvements can occur to enhance the performance of all-solid-state batteries in the future. |
URI: | https://scholars.lib.ntu.edu.tw/handle/123456789/629079 | ISSN: | 1944-8244 | DOI: | 10.1021/acsami.2c21618 |
顯示於: | 化學系 |
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