Guan Wanqing, Hu Xiaoqi, Liu Yuhang, Sun Jinmeng, He Chen, Du Zhuzhu, Bi Jingxuan, Wang Ke, Ai Wei
Frontiers Science Center for Flexible Electronics (FSCFE), Xi'an Institute of Flexible Electronics (IFE) and Xi'an Institute of Biomedical Materials & Engineering (IBME), Northwestern Polytechnical University (NPU), 127 West Youyi Road, Xi'an 710072, China.
School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore, Singapore 639798.
Research (Wash D C). 2022 Aug 1;2022:9846537. doi: 10.34133/2022/9846537. eCollection 2022.
Developing host has been recognized a potential countermeasure to circumvent the intrinsic drawbacks of Li metal anode (LMA), such as uncontrolled dendrite growth, unstable solid electrolyte interface, and infinite volume fluctuations. To realize proper Li accommodation, particularly bottom-up deposition of Li metal, gradient designs of host materials including lithiophilicity and/or conductivity have attracted a great deal of attention in recent years. However, a critical and specialized review on this quickly evolving topic is still absent. In this review, we attempt to comprehensively summarize and update the related advances in guiding Li nucleation and deposition. First, the fundamentals regarding Li deposition are discussed, with particular attention to the gradient design principles of host materials. Correspondingly, the progress of creating different gradients in terms of lithiophilicity, conductivity, and their hybrid is systematically reviewed. Finally, future challenges and perspective on the gradient design of advanced hosts towards practical LMAs are provided, which would provide a useful guidance for future studies.
开发宿主材料已被认为是一种潜在的对策，以规避锂金属阳极（LMA）的固有缺点，如不受控制的枝晶生长、不稳定的固体电解质界面和无限的体积波动。为了实现适当的锂容纳，特别是锂金属的自底向上沉积，近年来，包括亲锂性和/或导电性在内的宿主材料梯度设计引起了广泛关注。然而，对于这个快速发展的主题，仍然缺乏一篇关键且专业的综述。在这篇综述中，我们试图全面总结和更新在指导锂成核和沉积方面的相关进展。首先，讨论了锂沉积的基本原理，特别关注宿主材料的梯度设计原则。相应地，系统综述了在亲锂性、导电性及其混合方面创建不同梯度的进展。最后，提供了关于先进宿主材料梯度设计在实际锂金属阳极方面的未来挑战和展望，这将为未来的研究提供有用的指导。
