材料科学
化学工程
电解质
阳极
膜
电化学
溶解
水溶液中的金属离子
聚合物
纳米技术
电极
金属
复合材料
冶金
化学
物理化学
工程类
生物化学
作者
Hyunsub Song,Ji‐Young Lee,Min Sagong,Jiwon Jeon,Yeji Han,Jinwuk Kim,Hun‐Gi Jung,Ji‐Sang Yu,Jin‐Woo Lee,Il‐Doo Kim
标识
DOI:10.1002/adma.202407381
摘要
Abstract Construction of a robust artificial solid‐electrolyte interphase (SEI) layer has proposed an effective strategy to overcome the instability of the lithium (Li). However, existing artificial SEI layers inadequately controlled ion distribution, leading to dendritic growth and penetration. Furthermore, the environmental impact of the manufacturing process and materials of the artificial layer is often overlooked. In this work, a chemically and physically reinforced membrane (C‐Li@P) composed of the biocompatible Li + coordinated carboxymethyl guar gum (CMGG) and polyacrylamide (PAM) polymers serves as an artificial SEI membrane for dendrite‐free Li. This membrane with hollow channels not only directs ion flux along the interspace of fibers, fostering uniform Li plating but also induces a desirable interface chemistry. Consequently, artificial SEI membrane‐covered Li exhibits stable electrochemical plating/stripping reactions, surpassing the cycle life of ≈750% of bare Li. It demonstrates exceptional capacity retention of ≈93.9%, ≈88.1%, and ≈79.18% in full cells paired with LiNi 0.8 Mn 0.1 Co 0.1 O 2 (NMC811), LiNi 0.6 Mn 0.2 Co 0.2 O 2 (NMC622) and S cathodes, respectively over 200 cycles at 1 C rate. Additionally, the water‐based green manufacturing and biodegradability of the membrane demonstrated the sustainable development and disposal of electrodes. This work provides a comprehensive framework for the design of an artificial layer chemically and physically regulating dendritic growth.
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