通过插入杂原子提高锂离子电池 SiOx 负极性能的研究进展：现状与展望,Energy & Fuels

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通过插入杂原子提高锂离子电池 SiOx 负极性能的研究进展：现状与展望
Energy & Fuels ( IF 5.2 ) Pub Date : 2023-06-08 , DOI: 10.1021/acs.energyfuels.3c00785
Taeyeob Kim ₁ , Hai Li ₁ , Rafael Gervasone _{1,

2} , Ji Man Kim ₁ , Jin Yong Lee ₁

Affiliation

由于对高效且具有成本效益的储能系统的需求不断增长，锂离子电池的负极材料引起了人们的广泛研究兴趣。在正在研究的各种阳极材料中，硅基阳极因其具有克服与石墨阳极相关的许多限制的潜力而引起了相当大的关注。然而，硅基阳极在循环过程中会经历高体积膨胀，从而导致阳极失效。相比之下，氧化硅基（SiO _x）材料表现出有限的体积膨胀，使其成为锂离子电池负极材料的可行候选者。尽管如此，SiO _{x仍然存在一些挑战}阳极，包括体积膨胀（160-200%）、容量保持率差和初始库仑效率低。为了解决这些问题，将杂原子掺入 SiO _x阳极已被认为是一种有前途的策略。_{在这篇综述中，我们的目的是概述 SiO x}阳极的研究现状，包括实验和理论计算，重点是插入杂原子以提高阳极性能。特别是，我们研究了杂原子掺入对阳极电导率、锂扩散、耐久性和初始库仑效率的影响。此外，我们提出了一种将杂原子插入 SiO _{x的设计策略}阳极。_{本综述旨在全面了解杂原子在 SiO x}阳极中的作用，并强调该领域进一步研究的潜力。

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Review on Improving the Performance of SiOx Anodes for a Lithium-Ion Battery through Insertion of Heteroatoms: State of the Art and Outlook

Anode materials for Li-ion batteries have attracted significant research interest owing to the growing demand for efficient and cost-effective energy storage systems. Among the various anode materials being studied, silicon-based anodes have garnered considerable attention as a result of their potential to overcome many of the limitations associated with graphite anodes. However, silicon-based anodes undergo high volumetric expansion during cycling, which results in anode failure. In contrast, silicon-oxide-based (SiO_x) materials exhibit limited volumetric expansion, making them viable candidates as anode materials in lithium-ion batteries. Despite this, there remain several challenges associated with SiO_x anodes, including volumetric expansion (160–200%), poor capacity retention, and low initial coulombic efficiency. To address these issues, the incorporation of heteroatoms into SiO_x anodes has been proposed as a promising strategy. In this review, we aim to provide an overview of the current state of research on SiO_x anodes, including experiments and theoretical calculations, with a focus on the insertion of heteroatoms to improve the anode performance. In particular, we examine the effects of heteroatom incorporation on the anode conductivity, lithium diffusion, durability, and initial coulombic efficiency. In addition, we present a design strategy for the insertion of heteroatoms into the SiO_x anodes. This review aims to provide a comprehensive understanding of the role of heteroatoms in SiO_x anodes and highlight the potential for further research in this area.

更新日期：2023-06-08

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