A Review on Recent Advances for Boosting Initial Coulombic Efficiency of Silicon Anodic Lithium Ion batteries. Issue 5 (5th October 2021)

• Record Type: Journal Article
• Authors: Sun, Lin; Liu, Yanxiu; Wu, Jun; Shao, Rong; Jiang, Ruiyu; Tie, Zuoxiu; Jin, Zhong
• Is Part Of: Small. Volume 18:Issue 5(2022)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2021-10-05
• Subjects: initial Coulombic efficiency -- lithium ion batteries -- silicon anodes -- structure regulation; Nanotechnology -- Periodicals; Nanoparticles -- Periodicals; Microtechnology -- Periodicals; 620.5
• DOI: 10.1002/smll.202102894
• Languages: English
• ISSNs: 1613-6810

Abstract

Abstract: Rechargeable silicon anode lithium ion batteries (SLIBs) have attracted tremendous attention because of their merits, including a high theoretical capacity, low working potential, and abundant natural sources. The past decade has witnessed significant developments in terms of extending the lifespan and maintaining high capacities of SLIBs. However, the detrimental issue of low initial Coulombic efficiency (ICE) toward SLIBs is causing more and more attention in recent years because ICE value is a core index in full battery design that profoundly determines the utilization of active materials and the weight of an assembled battery. Herein, a comprehensive review is presented of recent advances in solutions for improving ICE of SLIBs. From design perspectives, the strategies for boosting ICE of silicon anodes are systematically categorized into several aspects covering structure regulation, prelithiation, interfacial design, binder design, and electrolyte additives. The merits and challenges of various approaches are highlighted and discussed in detail, which provides valuable insights into the rational design and development of state‐of‐the‐art techniques to deal with the deteriorative issue of low ICE of SLIBs. Furthermore, conclusions and future promising research prospects for lifting ICE of SLIBs are proposed at the end of the review. Abstract : The issue of low initial Coulombic efficiency (ICE) in Si anodic lithium ion batteries (LIBs) (SLIBs) is attracting more and more attention in recent years. This review first systematically summarizes the recent progress on the improvement of ICE of SLIBs from different viewpoints. Herein, new insights and useful guidance for designing Si anode based LIBs with better overall performances are provided.