材料科学
法拉第效率
阳极
润湿
成核
电解质
锂(药物)
金属
枝晶(数学)
集电器
化学工程
纳米技术
复合材料
有机化学
冶金
电极
物理化学
化学
内分泌学
工程类
医学
数学
几何学
作者
Seonmi Pyo,Seokgyu Ryu,Yong Jun Gong,Jinil Cho,Heejun Yun,Heebae Kim,Jeewon Lee,Byeongyun Min,Youngkyu Choi,Jeeyoung Yoo,Youn Sang Kim
标识
DOI:10.1002/aenm.202203573
摘要
Abstract Anode‐free Li metal batteries (AFLMBs) are highly advantageous due to their high energy density, low cost, and simple fabrication. However, severe challenges, such as uncontrolled dendrite formation and low coulombic efficiency, restrict their practical application. Herein, this work introduces a silver nanoparticles incorporated p‐doped conjugated polymer (Ag‐PCP) wetting agent on the copper current collector, which promotes both uniform Li nucleation and rapid formation of a LiF‐rich solid electrolyte interphase (SEI) at the early stage, resulting in interfacial stabilization and high Li utilization efficiency. Moreover, this work verifies the interfacial fluorinated mechanism of the Ag‐PCP to efficiently achieve a favorable SEI chemistry, which serves as an intermediate process for promoting LiF formation. Benefiting from the synergistic effect of Ag–Li alloying and F‐doping chemistry of the Ag‐PCP chains, the deposited Li exhibits a compact column‐like structure with dendrite‐free morphology, and the anode‐free cells display superior cycling stability with long lifespan even under harsh conditions, with the LFP//Ag‐PCP│Cu full cell having a high capacity retention of 72% (Li inventory retention rate, 99.8%) at 1 C‐rate after 200 cycles.
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