Affiliation:
1. National Special Superfine Powder Engineering Research Center School of Chemistry and Chemical Engineering Nanjing University of Science and Technology Nanjing 210094 China
2. Key Laboratory of Soft Chemistry and Functional Materials of Education Ministry School of Chemistry and Chemical Engineering Nanjing University of Science and Technology Nanjing 210094 China
Abstract
AbstractHigh nickel cathode material LiNixCoyMn1−x−yO2 (NCM) (x ≥ 0.6) has represented the most critical material in virtue of outstanding specific capacity and low self‐discharge. However, the high surface alkalinity and detrimental interfacial stability lead to the parasitic reaction and a series of phase deterioration. Herein, in situ cross‐linking binder molecular chains with a 3D network structure to construct a stable and robust electrode–electrolyte interface, which can maintain the structural integrity and restrain side reactions is designed. Simultaneously, the cross‐linked polymer can form stable hydrogen bonds with the pristine binder, greatly enhancing the bonding property. More importantly, the functional groups contained in the cross‐linked co‐polymers can chemically anchor transition metals, effectively preventing the dissolution of transition metals. Theoretical calculations confirm the feasibility and advancement of the anchoring mechanism, driving excellent structural stability and inhibition of the NiO impurity phase. This work provides a practical strategy to realize the high stability of cathode materials.
Funder
National Natural Science Foundation of China
Priority Academic Program Development of Jiangsu Higher Education Institutions
Subject
Biomaterials,Biotechnology,General Materials Science,General Chemistry
Cited by
1 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献