材料科学
锂(药物)
电解质
成核
电化学
图层(电子)
化学工程
电极
金属
金属锂
碳纤维
轨道杂交
氮化物
纳米技术
复合材料
分子轨道
物理化学
有机化学
化学
分子
冶金
价键理论
内分泌学
工程类
复合数
医学
作者
Youngil Roh,Jongchan Song,Ju-Hyuk Lee,Hyeokjin Kwon,Jaewon Baek,Dongjae Shin,Young Sook Yoo,Sangtae Ha,Wonkeun Kim,Kyunghan Ryu,Hee‐Tak Kim
标识
DOI:10.1016/j.ensm.2022.07.019
摘要
Controlling Li nucleation and growth by an interfacial layer is one of the critical challenges to achieving practical lithium metal batteries. In this work, we present a dual-lithiophilic interlayer, which has affinity to both Li+ and Li0 with the concept of intensified Lewis basicity and orbital hybridization. It was achieved by phosphorus-doped carbon nitride (PCN) layers in contact with Li metal electrode. Spectroscopic and electrochemical analyses demonstrated that strong interaction between the Li+ and PCN facilitates the charge transfer process. Driven by the orbital hybridization, under the PCN interfacial layer Li deposits grow with a planar morphology, mitigating electrolyte decomposition. A Li/Li symmetric cell employing the PCN interfacial layer operated for more than 400 cycles at 2 mA cm–2 and 2 mAh cm–2. Furthermore, a Li/NCM811 pouch cell with the PCN interfacial layer stably operated with 70% capacity retention for 330 cycles under practical operating conditions.
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