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Solid‐State Plastic Crystal Electrolytes: Effective Protection Interlayers for Sulfide‐Based All‐Solid‐State Lithium Metal Batteries
Advanced Functional Materials ( IF 18.5 ) Pub Date : 2019-05-06 , DOI: 10.1002/adfm.201900392 Changhong Wang 1 , Keegan R. Adair 1 , Jianwen Liang 1 , Xiaona Li 1 , Yipeng Sun 1 , Xia Li 1 , Jiwei Wang 1 , Qian Sun 1 , Feipeng Zhao 1 , Xiaoting Lin 1 , Ruying Li 1 , Huan Huang 2 , Li Zhang 3 , Rong Yang 3 , Shigang Lu 3 , Xueliang Sun 1
Advanced Functional Materials ( IF 18.5 ) Pub Date : 2019-05-06 , DOI: 10.1002/adfm.201900392 Changhong Wang 1 , Keegan R. Adair 1 , Jianwen Liang 1 , Xiaona Li 1 , Yipeng Sun 1 , Xia Li 1 , Jiwei Wang 1 , Qian Sun 1 , Feipeng Zhao 1 , Xiaoting Lin 1 , Ruying Li 1 , Huan Huang 2 , Li Zhang 3 , Rong Yang 3 , Shigang Lu 3 , Xueliang Sun 1
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All‐solid‐state lithium metal batteries (ASSLMBs) have attracted significant attention due to their superior safety and high energy density. However, little success has been made in adopting Li metal anodes in sulfide electrolyte (SE)‐based ASSLMBs. The main challenges are the remarkable interfacial reactions and Li dendrite formation between Li metal and SEs. In this work, a solid‐state plastic crystal electrolyte (PCE) is engineered as an interlayer in SE‐based ASSLMBs. It is demonstrated that the PCE interlayer can prevent the interfacial reactions and lithium dendrite formation between SEs and Li metal. As a result, ASSLMBs with LiFePO4 exhibit a high initial capacity of 148 mAh g−1 at 0.1 C and 131 mAh g−1 at 0.5 C (1 C = 170 mA g−1), which remains at 122 mAh g−1 after 120 cycles at 0.5 C. All‐solid‐state Li‐S batteries based on the polyacrylonitrile‐sulfur composite are also demonstrated, showing an initial capacity of 1682 mAh g−1. The second discharge capacity of 890 mAh g−1 keeps at 775 mAh g−1 after 100 cycles. This work provides a new avenue to address the interfacial challenges between Li metal and SEs, enabling the successful adoption of Li metal in SE‐based ASSLMBs with high energy density.
中文翻译：
固态塑料晶体电解质：基于硫化物的全固态锂金属电池的有效保护中间层
全固态锂金属电池（ASSLMB）由于其卓越的安全性和高能量密度而备受关注。但是，在基于硫化物电解质（SE）的ASSLMB中采用锂金属阳极取得的成功很少。主要挑战是显着的界面反应以及锂金属和SE之间的锂枝晶形成。在这项工作中，固态塑料晶体电解质（PCE）被设计为基于SE的ASSLMB中的中间层。证明了PCE中间层可以防止SE与Li金属之间的界面反应和锂枝晶的形成。结果，具有LiFePO 4的ASSLMBs在0.1 C时显示出148 mAh g -1的高初始容量，在0.5 C时显示出131 mAh g -1的高初始容量（1 C = 170 mA g -1），在0.5 C下经过120次循环后仍保持在122 mAh g -1。还展示了基于聚丙烯腈-硫复合材料的全固态Li-S电池，其初始容量为1682 mAh g -1。100次循环后，第二次放电容量为890 mAh g -1保持在775 mAh g -1。这项工作为解决锂金属与SE之间的界面挑战提供了新途径，从而使锂金属成功应用于具有高能量密度的SE型ASSLMB中。
更新日期：2019-05-06
中文翻译：
固态塑料晶体电解质：基于硫化物的全固态锂金属电池的有效保护中间层
全固态锂金属电池（ASSLMB）由于其卓越的安全性和高能量密度而备受关注。但是，在基于硫化物电解质（SE）的ASSLMB中采用锂金属阳极取得的成功很少。主要挑战是显着的界面反应以及锂金属和SE之间的锂枝晶形成。在这项工作中，固态塑料晶体电解质（PCE）被设计为基于SE的ASSLMB中的中间层。证明了PCE中间层可以防止SE与Li金属之间的界面反应和锂枝晶的形成。结果，具有LiFePO 4的ASSLMBs在0.1 C时显示出148 mAh g -1的高初始容量，在0.5 C时显示出131 mAh g -1的高初始容量（1 C = 170 mA g -1），在0.5 C下经过120次循环后仍保持在122 mAh g -1。还展示了基于聚丙烯腈-硫复合材料的全固态Li-S电池，其初始容量为1682 mAh g -1。100次循环后，第二次放电容量为890 mAh g -1保持在775 mAh g -1。这项工作为解决锂金属与SE之间的界面挑战提供了新途径，从而使锂金属成功应用于具有高能量密度的SE型ASSLMB中。
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