Revitalizing metal anodes for rechargeable batteries confronts challenges such as dendrite formation, limited cyclicity, and suboptimal energy density. Despite various efforts, a practical fabrication method for dendrite‐free metal anodes remains unavailable. Herein, focusing on Li as exemplar, we reported a general strategy to enhance reversibility of the metal anodes by forming alloyed metals, which was achieved by induction heating of 3D substrate, lithiophilic metals, and Li within tens of seconds. We demonstrated that preferred alloying interactions between substrates and lithiophilic metals created a lithiophilic metal‐rich region adjacent to the substrate, serving as ultra‐stable lithiophilic host to guide dendrite‐free deposition, particularly during prolonged high‐capacity cycling. Simultaneously, an alloying between lithiophilic metals and Li created a Li‐rich region adjacent to electrolyte that reduced nucleation overpotential and constituted favorable electrolyte‐Li interface. The resultant composite Li anodes paired with high areal loading LiNi0.8Co0.1Mn0.1O2 cathodes achieved superior cycling stability and remarkable energy density above 1200 Wh L−1 (excluding packaging). Furthermore, this approach showed broader applicability to other metal anodes plagued by dendrite‐related challenges such as Na and Zn. Overall, this work paves the way for development of commercially viable metal‐based batteries that offer a combination of safety, high energy density, and durability.This article is protected by copyright. All rights reserved

中文翻译：

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用于高性能金属电池的坚固合金金属阳极的一般制造


复兴可充电电池的金属阳极面临着枝晶形成、有限的循环性和次优能量密度等挑战。尽管做出了各种努力，但仍然没有一种实用的无枝晶金属阳极的制造方法。在此，以Li为例，我们报道了一种通过形成合金金属来增强金属阳极可逆性的一般策略，这是通过在数十秒内感应加热3D基底、亲锂金属和Li来实现的。我们证明，基材和亲锂金属之间的优选合金相互作用在基材附近形成了富含亲锂金属的区域，作为超稳定的亲锂主体来引导无枝晶沉积，特别是在长时间的高容量循环期间。同时，亲锂金属和锂之间的合金化在电解质附近形成了富锂区域，降低了成核过电势并构成了有利的电解质-锂界面。所得复合锂阳极与高面积负载LiNi0.8Co0.1Mn0.1O2阴极配对，实现了优异的循环稳定性和超过1200 Wh L−1（不包括包装）的显着能量密度。此外，这种方法对受到枝晶相关挑战（例如钠和锌）困扰的其他金属阳极表现出更广泛的适用性。总的来说，这项工作为开发商业上可行的金属基电池铺平了道路，该电池兼具安全性、高能量密度和耐用性。本文受版权保护。版权所有