Interdigitated cathode–electrolyte architectural design for fast-charging lithium metal battery with lithium oxyhalide solid-state electrolyte
Interdigitated cathode–electrolyte architectural design for fast-charging lithium metal battery with lithium oxyhalide solid-state electrolyte
复制标题
卤氧化锂固态电解质快速充电锂金属电池的叉指型阴极-电解质结构设计
DOI：
10.1039/d2ma00512c
复制
发表时间：
2022
影响因子：
5
通讯作者：
Smirnova, Alevtina
中科院分区：
文献类型：
--
作者：
Numan-Al-Mobin, Abu Md;Schmidt, Ben;Lannerd, Armand;Viste, Mark;Qiao, Quinn;Smirnova, Alevtina
全固态电池是传统锂离子电池的一个有前途的替代品，传统锂离子电池已经达到了其技术能力的极限。下一代锂离子电池预计将是环保，持久和安全的，同时展示高能量密度和提供超快充电。这些急需的性能需要大量的努力来发现和利用固态电解质和阴极纳米复合材料的化学，形态和电化学性能。在这里，我们报告的固态电化学电池的基础上的锂卤氧化物电解质，是由熔融铸造。该方法导致增强的阴极/电解质界面，其允许异常高的充电速率（> 400 ℃），同时在锂金属阳极和基于磷酸铁锂的阴极存在下保持固态电解质的电化学稳定性。这些电池具有较长的循环寿命（在100 °C下超过1800次循环），并为下一代全固态电池技术提供了一条有前途的路线。
The all-solid-state battery is a promising alternative to conventional lithium-ion batteries that have reached the limit of their technological capabilities. The next-generation lithium-ion batteries are expected to be eco-friendly, long-lasting, and safe while demonstrating high energy density and providing ultrafast charging. These much-needed properties require significant efforts to uncover and utilize the chemical, morphological, and electrochemical properties of solid-state electrolytes and cathode nanocomposites. Here we report solid-state electrochemical cells based on lithium oxyhalide electrolyte that is produced by melt-casting. This method results in enhanced cathode/electrolyte interfaces that allow exceptionally high charging rates (>4000C) while maintaining the electrochemical stability of solid-state electrolyte in the presence of lithium metal anode and lithium iron phosphate-based cathode. The cells exhibit long cycle life (>1800 cycles at 100 °C) and offer a promising route to the next-generation all-solid-state battery technology.