锂离子电池前沿之路：石墨烯负极回顾与展望,Advanced Materials

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锂离子电池前沿之路：石墨烯负极回顾与展望
Advanced Materials ( IF 27.4 ) Pub Date : 2023-01-09 , DOI: 10.1002/adma.202210734
Jingxuan Bi ₁ , Zhuzhu Du ₁ , Jinmeng Sun ₁ , Yuhang Liu ₁ , Ke Wang ₁ , Hongfang Du ₂ , Wei Ai ₁ , Wei Huang _{1,

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Affiliation

长期以来，石墨烯一直被认为是下一代锂离子电池 (LIB) 的潜在阳极。过去十年见证了石墨烯负极的快速发展，目前已取得相当大的突破。在这篇综述中，目的是提供石墨烯负极走向实用 LIBs 的研究路线图。从石墨烯的储锂机理入手，全面总结了提高其电化学性能的途径。首先，具有多孔、球形、带状、有缺陷和多孔结构的形态工程石墨烯阳极由于其高度可及的表面积、相互连接的扩散通道和足够的活性位点而显示出更高的容量和倍率性能。表面改性石墨烯阳极，聚集少，电子/离子传输快，讨论了最佳固体电解质界面，证明了石墨烯的表面结构与电化学活性之间的密切联系。其次，概述了通过杂原子掺杂和共价功能化制备的石墨烯衍生物负极，由于额外引入的缺陷/活性位点可进一步容纳锂，因此在提高锂存储性能方面显示出巨大优势。此外，还提出了无粘合剂和独立式石墨烯电极，展示了高能量密度和柔性 LIB 的广阔前景。最后，强调了用于先进 LIB 的实用石墨烯阳极的剩余挑战和未来机遇。其次，概述了通过杂原子掺杂和共价功能化制备的石墨烯衍生物负极，由于额外引入的缺陷/活性位点可进一步容纳锂，因此在提高锂存储性能方面显示出巨大优势。此外，还提出了无粘合剂和独立式石墨烯电极，展示了高能量密度和柔性 LIB 的广阔前景。最后，强调了用于先进 LIB 的实用石墨烯阳极的剩余挑战和未来机遇。其次，概述了通过杂原子掺杂和共价功能化制备的石墨烯衍生物负极，由于额外引入的缺陷/活性位点可进一步容纳锂，因此在提高锂存储性能方面显示出巨大优势。此外，还提出了无粘合剂和独立式石墨烯电极，展示了高能量密度和柔性 LIB 的广阔前景。最后，强调了用于先进 LIB 的实用石墨烯阳极的剩余挑战和未来机遇。提出了无粘合剂和独立式石墨烯电极，展示了高能量密度和柔性 LIB 的广阔前景。最后，强调了用于先进 LIB 的实用石墨烯阳极的剩余挑战和未来机遇。提出了无粘合剂和独立式石墨烯电极，展示了高能量密度和柔性 LIB 的广阔前景。最后，强调了用于先进 LIB 的实用石墨烯阳极的剩余挑战和未来机遇。

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On the Road to the Frontiers of Lithium-Ion Batteries: A Review and Outlook of Graphene Anodes

Graphene has long been recognized as a potential anode for next-generation lithium-ion batteries (LIBs). The past decade has witnessed the rapid advancement of graphene anodes, and considerable breakthroughs are achieved so far. In this review, the aim is to provide a research roadmap of graphene anodes toward practical LIBs. The Li storage mechanism of graphene is started with and then the approaches to improve its electrochemical performance are comprehensively summarized. First, morphologically engineered graphene anodes with porous, spheric, ribboned, defective and holey structures display improved capacity and rate performance owing to their highly accessible surface area, interconnected diffusion channels, and sufficient active sites. Surface-modified graphene anodes with less aggregation, fast electrons/ions transportation, and optimal solid electrolyte interphase are discussed, demonstrating the close connection between the surface structure and electrochemical activity of graphene. Second, graphene derivatives anodes prepared by heteroatom doping and covalent functionalization are outlined, which show great advantages in boosting the Li storage performances because of the additionally introduced defect/active sites for further Li accommodation. Furthermore, binder-free and free-standing graphene electrodes are presented, exhibiting great prospects for high-energy-density and flexible LIBs. Finally, the remaining challenges and future opportunities of practically available graphene anodes for advanced LIBs are highlighted.

更新日期：2023-01-09

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