材料科学
锂(药物)
沉积(地质)
金属锂
金属
无机化学
共形映射
纳米技术
化学工程
冶金
电极
阳极
物理化学
医学
古生物学
数学分析
化学
数学
工程类
沉积物
生物
内分泌学
作者
Seung‐Hyeok Kim,Jae Ho Park,Ji Eun Lee,Imanuel Kristanto,Jae Yeol Park,Hoyoung Suh,Ji‐Young Kim,Kwon‐Hyung Lee,Jiwon Jeong,Wonyoung Chang,Sang Kyu Kwak,Kyung Yoon Chung,Sang Young Lee
标识
DOI:10.1002/aenm.202304337
摘要
Abstract Despite the enormous efforts to control the growth behavior of Li, achieving a dendrite‐free Li deposition and high‐energy‐density have remained an inevitable challenge of Li metal batteries. Here, the conformal deposition of Li metal is reported on electroactive organic materials to achieve a high‐energy‐density and electrochemical longevity. To this end, Li 2 C 8 H 4 O 4 (Li 2 TP), which can act as both the electrode material (providing the redox capacity) and Li host (inducing the dendrite‐free Li deposition), is used as the model electroactive organic material. The Li 2 TP host exhibits reversible sequential lithiation/delithiation and Li deposition/stripping reactions. Consequently, a Li‐free full cell constructed by the Li 2 TP host (without pre‐charging) and a LiFePO 4 cathode delivered a high areal capacity (≈3.8 mAh cm −2 ), exceptional rate performance (≤12 mA cm −2 ), and superior cyclability (80% capacity retention after 100 cycles). This electroactive organic material‐based Li host strategy can provide a new perspective for the development of practical Li metal batteries.
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