Research Progress on the Surface of High-Nickel Nickel-Cobalt-Manganese Ternary Cathode Materials: A Mini Review.

Peng Jiang,Zhongliang Xiao,Liubin Song,Huali Zhu,Zhong Cao,Jinlian Du

doi:10.3389/fchem.2020.00761

Peng Jiang, Zhongliang Xiao + Show 4 more

Open Access

https://doi.org/10.3389/fchem.2020.00761

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Abstract

To address increasingly prominent energy problems, lithium-ion batteries have been widely developed. The high-nickel type nickel–cobalt–manganese (NCM) ternary cathode material has attracted attention because of its high energy density, but it has problems such as cation mixing. To address these issues, it is necessary to start from the surface and interface of the cathode material, explore the mechanism underlying the material's structural change and the occurrence of side reactions, and propose corresponding optimization schemes. This article reviews the defects caused by cation mixing and energy bands in high-nickel NCM ternary cathode materials. This review discusses the reasons why the core-shell structure has become an optimized high-nickel ternary cathode material in recent years and the research progress of core-shell materials. The synthesis method of high-nickel NCM ternary cathode material is summarized. A good theoretical basis for future experimental exploration is provided.

Highlights

As environmental issues have become a major concern, reducing the use of fossil fuels has become a key issue
A material synthesized by the co-precipitation method has a small and uniform particle size and is typically used for coating the high-nickel NCM ternary cathode material and for the synthesis of the core-shell structure
The following are prepared by co-precipitation method: LiNi0.6Mn0.2Co0.2O2 (Ren et al, 2017), LiNi0.8Mn0.8Co0.1O@Li3PO4@PPy (Chen S. et al, 2017), Li[(Ni0.8Co0.1Mn0.1)1−x(Ni0.5Mn0.5)x]O2 (Sun et al, 2006a), LiNi0.8Co0.1Mn0.1O2@x[Li-Mn-O] (Li et al, 2018), and LiNi0.8Co0.1Mn0.1O2@active material core-shell material (Su et al, 2019)

Summary

Introduction

As environmental issues have become a major concern, reducing the use of fossil fuels has become a key issue. Lithium-ion batteries are the most commonly used energy storage devices due to their high energy density and long cycle life (Wang et al, 2020f; Zhang et al, 2020). The new energy industry powered by lithium-ion batteries has been greatly developed (Pant and Dolker, 2017; Barcellona and Piegari, 2020; Mossali et al, 2020; Wang et al, 2020d). Fierce competition in this industry has brought about higher requirements for lithium-ion batteries (Zubi et al, 2018). Analyzing and optimizing the electrode material is an important approach to solving the bottleneck of the lithium ion battery (Lipu et al, 2018; Zhang et al, 2018)

Methods

Conclusion