Central South University has made a series of research progress in the field of low-cost energy storage

Recently, Liang Shuquan's team from the School of Materials Science and Engineering of Central South University has successively published innovative research results on energy storage materials in international authoritative journals in the field of materials and energy such as EnergyEnvironmentalScience and AdvancedFunctionalMaterials. The research results have solved some common scientific problems in this field, and are expected to promote the further development of the widely concerned low-cost energy storage field. In the research of zinc metal anode materials, the team obtained a three-dimensional network structure ZnO functionally modified Zn@ZnO-3D anode through a one-step liquid phase precipitation method, which realized the optimized combination of material structure control and interface modification. Combining kinetic and thermodynamic analysis, and first-principles calculations, it shows that the anode has a faster ion deposition/migration kinetic rate, in which O element can be preferentially adsorbed and easily combined with Zn2+, reducing the combination of water and zinc ions, and inhibiting H2 Escape, so as to achieve 99.55% zinc utilization and high reversible deposition/stripping times of up to 1000 times. Based on this negative electrode, the capacity of the MnO2 full battery is basically maintained at 100% after being cycled 500 times at a current density of 0.5Ag-1. The research results were recently published online in EnergyEnvironmentalScience. The team also designed an electronically insulated ion-conducting kaolin coating to stabilize the zinc negative electrode, prevent direct contact between the electrode and the electrolyte, and reduce side reactions such as self-corrosion and electrochemical corrosion that active water participates in. The results were recently published online in the natural index journal AdvancedFunctionalMaterials. The new Zn@ZnO-3D anode material structure and theoretical calculation results developed by Liang Shuquan’s team. In terms of zinc ion electrolyte research, the team developed a three-dimensional multilayer gel electrolyte (Alginate-Zn), which innovatively uses carboxylate The limited use of the acid radical (-COO-) group to zinc ions effectively inhibits the appearance of negative dendrites and by-products, realizes uniform and reversible zinc deposition/stripping, and can significantly improve the shelf performance of Zn/MnO2 batteries. This research The results were recently published online in EnergyStorage Materials, an internationally renowned energy journal. The team also found that the current manganese-based cathode materials of rechargeable zinc-manganese batteries can only show good electrochemical activity in electrolytes with sufficient water content (such as aqueous electrolytes). Through theoretical calculations and experimental results, the new activation mechanism of the material and the new desolvation behavior of Zn2+ ions have been explored. By optimizing the new regulation mechanism, the electrochemical performance of the zinc-manganese battery developed by the team has been greatly improved. It can obtain a specific capacity of more than 300mAhg-1 at a current density of 0.1Ag-1, and has a long cycle life of more than 2000 times. This discovery will provide an important reference for the exploration and optimization of zinc-manganese battery electrolyte. The research results will be published online in the natural index journal AdvancedFunctionalMaterials. Zinc-ion batteries have many advantages in the field of low-cost energy storage and have great potential, but there are still many key problems to be solved in the electrolyte. The Liang Shuquan team conducted a systematic verification of these problems, and put forward forward-looking prospects and suggestions based on the team's series of research results, which were recently published online in EnergyEnvironmentalScience. The team also focused on the overall refining of the domestic and foreign work of electrolyte additives. The research results were recently published online in the internationally renowned journal EnergyStorageMaterials. Based on the team's series of innovative contributions in this field, my country's comprehensive authoritative academic journal 'Science Bulletin' invited the team to write related reviews. In the development of cathode materials for sodium ion batteries, the team has developed a new cathode material Na3.5Mn0.5V1.5(PO4)3/C. The influence of crystal structure distortion, ion mobility and its performance in the electrochemical process is clarified. The new material has excellent performance and promising application, and it was published online in NanoResearch, a leading journal in my country. The team also developed a carbon quantum dot modified Na3V2(PO4)2F3 cathode material. Through the use of carbon quantum dots to induce the nucleation and growth of the material, the hierarchical structure of the material was designed, which significantly improved the cathode material in sodium ion batteries. Dynamic performance. The research results were recently published online in JournalofMaterialsChemistryA. The picture is a schematic diagram of the influence of different Mn ion insertion on the electrochemical performance of the NASCION structure. It is reported that the team has received support from the National Natural Science Foundation of China (51932011) and general projects (51872334, 51972346, 52272411) and other projects in the field of low-cost storage A number of important research results, and related academic papers continue to be published in EnergyEnviron.Sci., Adv.Funct.Mater., EnergyStorageMater., J.Mater.Chem.A, Sci.Bull., NanoRes., J.EnergyChem., Chem .Commun., Inorg.Chem. and other high-impact international authoritative journals, of which 2 are highly cited papers and 2 are hot papers. The Liang Shuquan team of Central South University has made a series of research progress in the field of low-cost energy storage. Statement: Some pictures and content of the articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous: Competition between lithium batteries and supercapacitors