Shomura Ryo, Tamate Ryota, Matsuda Shoichi
Department of Creative Engineering, National Institute of Technology, Tsuruoka College, 104 Sawada, Inooka, Tsuruoka 997-8511, Japan.
Center for Green Research on Energy and Environmental Materials, National Institute for Material Science, 1-1 Namiki, Tsukuba 305-0044, Japan.
Materials (Basel). 2022 Jan 3;15(1):322. doi: 10.3390/ma15010322.
Lithium metal anode is regarded as the ultimate negative electrode material due to its high theoretical capacity and low electrochemical potential. However, the significantly high reactivity of Li metal limits the practical application of Li metal batteries. To improve the stability of the interface between Li metal and an electrolyte, a facile and scalable blade coating method was used to cover the commercial polyethylene membrane separator with an inorganic/organic composite solid electrolyte layer containing lithium-ion-conducting ceramic fillers. The coated separator suppressed the interfacial resistance between the Li metal and the electrolyte and consequently prolonged the cycling stability of deposition/dissolution processes in Li/Li symmetric cells. Furthermore, the effect of the coating layer on the discharge/charge cycling performance of lithium-oxygen batteries was investigated.
锂金属负极因其高理论容量和低电化学势而被视为终极负极材料。然而，锂金属极高的反应活性限制了锂金属电池的实际应用。为提高锂金属与电解质之间界面的稳定性，采用了一种简便且可扩展的刮刀涂布法，用含有锂离子传导陶瓷填料的无机/有机复合固体电解质层覆盖商用聚乙烯膜隔膜。涂覆后的隔膜抑制了锂金属与电解质之间的界面电阻，从而延长了锂/锂对称电池中沉积/溶解过程的循环稳定性。此外，还研究了涂层对锂氧电池充放电循环性能的影响。
