Recently, the new energy materials research team led by Professor Yang Xuelin from the College of Materials and Chemical Engineering of China Three Gorges University has made new progress in the research of lithium vanadium phosphate thin film electrodes for high-performance and flexible lithium-ion batteries.
The team successfully fabricated a carbon-coated vanadium and lithium-phosphate lithium thin film electrode using a three-dimensional nitrogen-doped carbon fiber as a substrate by an in-situ growth method.
The thin film electrode requires neither a binder nor a conventional electrode current collector, which will greatly increase the energy density of the electrode. The in-situ generated nitrogen-doped carbon fiber and the carbon coating constitute a good three-dimensional conductive network, which helps to improve the conductivity of the polyanion-type positive electrode material lithium vanadium phosphate, so that the electrode exhibits excellent rate performance. In addition, the flexible electrode is also more conducive to relieving the stress generated by the volume expansion (shrinkage) of the material during charge and discharge of the battery, and can significantly improve the cycle stability of the electrode. The thin-film electrode preparation method can provide theoretical reference and application reference for the development of a binderless high energy density lithium (sodium) ion battery. The relevant research results have been published online in the internationally renowned academic journal "Nano Energy" (influence factor). 11.553) on.
In the past five years, the research team of the New Energy Materials of the School of Materials and Chemical Engineering of China Three Gorges University has achieved series of research results in the field of new energy materials research by undertaking national (7 items), provincial-level key (3 items) projects, and major corporate cross-cutting topics. . The team has published a total of more than 60 SCI papers, of which more than 20 papers have been published in publications with an impact factor of 5 and 4 papers have been selected for ESI high cited papers in engineering disciplines and more than 10 authorized invention patents have been granted (Transfer 2 item).
It is understood that the research work of Professor Yang Xuelin has been funded by the National Natural Science Foundation of China, the Outstanding Youth Fund of Hubei Province, the Science and Technology Innovation Team of the Education Department of Hubei Province, and the Collaborative Innovation Center of Hubei Province of New Energy Microgrid. (Reporter Wang Zhenhua Confucius Confucius)
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