<br>高性能高镍（Ni ≥ 80%）锂离子电池的电解质工程,Advanced Science

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高性能高镍（Ni ≥ 80%）锂离子电池的电解质工程
Advanced Science ( IF 14.3 ) Pub Date : 2023-12-03 , DOI: 10.1002/advs.202305753
Tiantian Dong _{1,

2,

3} , Shenghang Zhang _{1,

2,

3} , Zhongqin Ren _{1,

2,

3} , Lang Huang _{1,

2,

3} , Gaojie Xu _{1,

2,

3} , Tao Liu _{1,

2,

3} , Shitao Wang _{1,

2,

3} , Guanglei Cui _{1,

2,

3}

Affiliation

高比能量的高镍（Ni≥80%）锂离子电池（LIB）是解决日益增长的续航焦虑的最重要的技术路线之一。然而，由于其化学性质极其恶劣，高镍（Ni≥80%）锂离子电池的循环寿命和安全性能较差，阻碍了其大规模商业应用。在各种策略中，电解质工程对于同时提高高镍（Ni ≥ 80%）LIB的循环寿命和安全性非常有效。在这篇综述中，全面总结了高镍氧化物正极和传统LiPF ₆碳酸酯基电解质所面临的关键挑战。然后，系统地阐述了LiPF ₆碳酸酯基电解质的功能添加剂设计指南和高耐压/高安全性新型电解质的设计原理，以解决这些关键挑战。此外，还回顾了所提出的高镍（Ni≥80%）LIB的热失控机制，为高安全电解质的设计提供有用的视角。最后，提出了高性能高镍（Ni≥80%）锂离子电池电解质工程的潜在研究方向。该综述将对电解液创新以及高镍（Ni≥80%）锂离子电池的商业化发展产生重要影响，对于突破锂离子电池的能量密度上限具有重要意义。

"点击查看英文标题和摘要"

Electrolyte Engineering Toward High Performance High Nickel (Ni ≥ 80%) Lithium-Ion Batteries

High nickel (Ni ≥ 80%) lithium-ion batteries (LIBs) with high specific energy are one of the most important technical routes to resolve the growing endurance anxieties. However, because of their extremely aggressive chemistries, high-Ni (Ni ≥ 80%) LIBs suffer from poor cycle life and safety performance, which hinder their large-scale commercial applications. Among varied strategies, electrolyte engineering is very powerful to simultaneously enhance the cycle life and safety of high-Ni (Ni ≥ 80%) LIBs. In this review, the pivotal challenges faced by high-Ni oxide cathodes and conventional LiPF₆-carbonate-based electrolytes are comprehensively summarized. Then, the functional additives design guidelines for LiPF₆-carbonate -based electrolytes and the design principles of high voltage resistance/high safety novel electrolytes are systematically elaborated to resolve these pivotal challenges. Moreover, the proposed thermal runaway mechanisms of high-Ni (Ni ≥ 80%) LIBs are also reviewed to provide useful perspectives for the design of high-safety electrolytes. Finally, the potential research directions of electrolyte engineering toward high-performance high-Ni (Ni ≥ 80%) LIBs are provided. This review will have an important impact on electrolyte innovation as well as the commercial evolution of high-Ni (Ni ≥ 80%) LIBs, and also will be significant to breakthrough the energy density ceiling of LIBs.

更新日期：2023-12-03

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