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Lithium Metal-Compatible Antifluorite Electrolytes for Solid-State Batteries
Journal of the American Chemical Society ( IF 14.4 ) Pub Date : 2024-04-23 , DOI: 10.1021/jacs.4c02170 Pengcheng Yu 1, 2, 3 , Haochang Zhang 4 , Fiaz Hussain 1 , Jing Luo 5 , Wen Tang 1 , Jiuwei Lei 2 , Lei Gao 4, 6 , Denys Butenko 2 , Changhong Wang 1 , Jinlong Zhu 2 , Wen Yin 7 , Hao Zhang 8 , Songbai Han 4 , Ruqiang Zou 6 , Wei Chen 3 , Yusheng Zhao 1 , Wei Xia 1 , Xueliang Sun 1, 5
Journal of the American Chemical Society ( IF 14.4 ) Pub Date : 2024-04-23 , DOI: 10.1021/jacs.4c02170 Pengcheng Yu 1, 2, 3 , Haochang Zhang 4 , Fiaz Hussain 1 , Jing Luo 5 , Wen Tang 1 , Jiuwei Lei 2 , Lei Gao 4, 6 , Denys Butenko 2 , Changhong Wang 1 , Jinlong Zhu 2 , Wen Yin 7 , Hao Zhang 8 , Songbai Han 4 , Ruqiang Zou 6 , Wei Chen 3 , Yusheng Zhao 1 , Wei Xia 1 , Xueliang Sun 1, 5
Affiliation
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Lithium (Li) metal solid-state batteries feature high energy density and improved safety and thus are recognized as promising alternatives to traditional Li-ion batteries. In practice, using Li metal anodes remains challenging because of the lack of a superionic solid electrolyte that has good stability against reduction decomposition at the anode side. Here, we propose a new electrolyte design with an antistructure (compared to conventional inorganic structures) to achieve intrinsic thermodynamic stability with a Li metal anode. Li-rich antifluorite solid electrolytes are designed and synthesized, which give a high ionic conductivity of 2.1 × 10–4 S cm–1 at room temperature with three-dimensional fast Li-ion transport pathways and demonstrate high stability in Li–Li symmetric batteries. Reversible full cells with a Li metal anode and LiCoO2 cathode are also presented, showing the potential of Li-rich antifluorites as Li metal-compatible solid electrolytes for high-energy-density solid-state batteries.
中文翻译：
用于固态电池的锂金属相容性抗萤石电解质
锂（Li）金属固态电池具有高能量密度和更高的安全性，因此被认为是传统锂离子电池的有前途的替代品。在实践中，由于缺乏对阳极侧还原分解具有良好稳定性的超离子固体电解质，使用锂金属阳极仍然具有挑战性。在这里，我们提出了一种具有反结构（与传统无机结构相比）的新电解质设计，以实现锂金属阳极的内在热力学稳定性。设计并合成了富锂反萤石固体电解质，其在室温下具有2.1 × 10 –4 S cm –1的高离子电导率，具有三维快速锂离子传输路径，并在Li-Li对称电池中表现出高稳定性。还提出了具有锂金属阳极和LiCoO 2阴极的可逆全电池，展示了富锂反萤石作为高能量密度固态电池的与锂金属兼容的固体电解质的潜力。
更新日期：2024-04-23
中文翻译：
用于固态电池的锂金属相容性抗萤石电解质
锂（Li）金属固态电池具有高能量密度和更高的安全性，因此被认为是传统锂离子电池的有前途的替代品。在实践中，由于缺乏对阳极侧还原分解具有良好稳定性的超离子固体电解质，使用锂金属阳极仍然具有挑战性。在这里，我们提出了一种具有反结构（与传统无机结构相比）的新电解质设计，以实现锂金属阳极的内在热力学稳定性。设计并合成了富锂反萤石固体电解质，其在室温下具有2.1 × 10 –4 S cm –1的高离子电导率，具有三维快速锂离子传输路径，并在Li-Li对称电池中表现出高稳定性。还提出了具有锂金属阳极和LiCoO 2阴极的可逆全电池，展示了富锂反萤石作为高能量密度固态电池的与锂金属兼容的固体电解质的潜力。
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