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In Situ Polymerization Permeated Three‐Dimensional Li+‐Percolated Porous Oxide Ceramic Framework Boosting All Solid‐State Lithium Metal Battery
Advanced Science ( IF 14.3 ) Pub Date : 2021-03-03 , DOI: 10.1002/advs.202003887 Yiyuan Yan 1 , Jiangwei Ju 1 , Shanmu Dong 1 , Yantao Wang 1 , Lang Huang 1 , Longfei Cui 1 , Feng Jiang 1 , Qinglei Wang 1 , Yanfen Zhang 1 , Guanglei Cui 1
Advanced Science ( IF 14.3 ) Pub Date : 2021-03-03 , DOI: 10.1002/advs.202003887 Yiyuan Yan 1 , Jiangwei Ju 1 , Shanmu Dong 1 , Yantao Wang 1 , Lang Huang 1 , Longfei Cui 1 , Feng Jiang 1 , Qinglei Wang 1 , Yanfen Zhang 1 , Guanglei Cui 1
Affiliation
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Solid‐state lithium battery promises highly safe electrochemical energy storage. Conductivity of solid electrolyte and compatibility of electrolyte/electrode interface are two keys to dominate the electrochemical performance of all solid‐state battery. By in situ polymerizing poly(ethylene glycol) methyl ether acrylate within self‐supported three‐dimensional porous Li1.3Al0.3Ti1.7(PO4)3 framework, the as‐assembled solid‐state battery employing 4.5 V LiNi0.8Mn0.1Co0.1O2 cathode and Li metal anode demonstrates a high Coulombic efficiency exceeding 99% at room temperature. Solid‐state nuclear magnetic resonance results reveal that Li+ migrates fast along the continuous Li1.3Al0.3Ti1.7(PO4)3 phase and Li1.3Al0.3Ti1.7(PO4)3/polymer interfacial phase to generate a fantastic conductivity of 2.0 × 10−4 S cm−1 at room temperature, which is 56 times higher than that of pristine poly(ethylene glycol) methyl ether acrylate. Meanwhile, the in situ polymerized poly(ethylene glycol) methyl ether acrylate can not only integrate the loose interfacial contact but also protect Li1.3Al0.3Ti1.7(PO4)3 from being reduced by lithium metal. As a consequence of the compatible solid‐solid contact, the interfacial resistance decreases significantly by a factor of 40 times, resolving the notorious interfacial issue effectively. The integrated strategy proposed by this work can thereby guide both the preparation of highly conductive solid electrolyte and compatible interface design to boost practical high energy density all solid‐state lithium metal battery.
中文翻译：
原位聚合渗透三维Li+渗透多孔氧化物陶瓷骨架促进全固态锂金属电池
固态锂电池有望实现高度安全的电化学储能。固体电解质的导电性和电解质/电极界面的相容性是决定全固态电池电化学性能的两个关键。通过在自支撑三维多孔Li 1.3 Al 0.3 Ti 1.7 (PO 4 ) 3骨架内原位聚合聚乙二醇甲醚丙烯酸酯，组装而成的固态电池采用4.5 V LiNi 0.8 Mn 0.1 Co 0.1 O 2正极和Li金属负极在室温下表现出超过99%的高库仑效率。固态核磁共振结果表明，Li +沿着连续的Li 1.3 Al 0.3 Ti 1.7 (PO 4 ) 3相和Li 1.3 Al 0.3 Ti 1.7 (PO 4 ) 3 /聚合物界面相快速迁移，产生优异的电导率室温下为2.0×10 -4 S cm -1 ，比原始聚乙二醇甲醚丙烯酸酯高56倍。同时，原位聚合的聚乙二醇甲醚丙烯酸酯不仅可以整合疏松的界面接触，而且可以保护Li 1.3 Al 0.3 Ti 1.7 (PO 4 ) 3不被锂金属还原。由于相容的固-固接触，界面电阻显着降低了40倍，有效解决了臭名昭著的界面问题。 这项工作提出的综合策略可以指导高导电固体电解质的制备和兼容的界面设计，以促进高能量密度全固态锂金属电池的实用化。
更新日期：2021-05-05
中文翻译：
原位聚合渗透三维Li+渗透多孔氧化物陶瓷骨架促进全固态锂金属电池
固态锂电池有望实现高度安全的电化学储能。固体电解质的导电性和电解质/电极界面的相容性是决定全固态电池电化学性能的两个关键。通过在自支撑三维多孔Li 1.3 Al 0.3 Ti 1.7 (PO 4 ) 3骨架内原位聚合聚乙二醇甲醚丙烯酸酯，组装而成的固态电池采用4.5 V LiNi 0.8 Mn 0.1 Co 0.1 O 2正极和Li金属负极在室温下表现出超过99%的高库仑效率。固态核磁共振结果表明，Li +沿着连续的Li 1.3 Al 0.3 Ti 1.7 (PO 4 ) 3相和Li 1.3 Al 0.3 Ti 1.7 (PO 4 ) 3 /聚合物界面相快速迁移，产生优异的电导率室温下为2.0×10 -4 S cm -1 ，比原始聚乙二醇甲醚丙烯酸酯高56倍。同时，原位聚合的聚乙二醇甲醚丙烯酸酯不仅可以整合疏松的界面接触，而且可以保护Li 1.3 Al 0.3 Ti 1.7 (PO 4 ) 3不被锂金属还原。由于相容的固-固接触，界面电阻显着降低了40倍，有效解决了臭名昭著的界面问题。 这项工作提出的综合策略可以指导高导电固体电解质的制备和兼容的界面设计，以促进高能量密度全固态锂金属电池的实用化。
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