Hefei Research Institute publishes a review article on high energy density nanolithium-ion batteries
 |
Schematic diagram of graphene structure (left) and SEM photograph of cathode material of three-dimensional graphene-based lithium battery (right)
Recently, Huang Xingji, a researcher at the Institute of Intelligent Machinery of the Chinese Academy of Sciences' Hefei Institute of Physical Science, and Liu Jinyun, an associate researcher, were invited to publish special invited articles on energy storage materials in the Journal of Materials Chemistry A, an international journal of materials chemistry. A systematic review of high-energy-density nanolithium-ion batteries was made, focusing on three-dimensional nanostructured graphene-based lithium-ion batteries and their high energy density, high capacity, and excellent rate performance. The article is entitled Three-dimensional graphene-based nanocomposites for high energy density Li-ion batteries (J. Mater. Chem. A, 2017, DOI: 10.1039/C7TA00448F).
High-energy-density lithium-ion batteries have broad application prospects in the field of energy storage (such as new energy vehicle power batteries). This review describes in detail the latest advances in nano-electrode composites composed of three-dimensional graphene and energy storage active materials, including: three-dimensional graphene and LiFePO4, V2O5, Li2MnSiO4 composite positive electrode, three-dimensional graphene and Si, Ge, metal Composite anode composed of oxides, metal sulfides, etc. The three-dimensional graphene in the lithium battery nanocomposite proves to be able to provide an excellent conductive network, promote the rapid transfer of lithium ions and charges, and effectively relieve the electrode structure change during the lithium removal/insertion process.
The review pointed out that the development direction of the next-generation high-energy-density lithium-ion battery mainly lies in the development of a three-dimensional graphene-based battery/supercapacitor composite energy storage device; development of graphene/LiNi1-x-yCox MnyO2 (such as LiNi1/3Co1/3Mn1 /3O2), LiNi(1-xy)CoxAlyO2 (such as LiNi0.8Co0.15Al0.05O2) and LiMn2O4 high voltage cathode materials, and graphene/NiCo2O4, Sn/Co alloy anode materials; increase electrode materials in practical applications The tap density and capacity stability; The electrolyte that matches the electrode material system, in particular, improves the chemical stability of the electrolyte under high voltage working conditions.
The research work was funded by the National Natural Science Foundation.
Ball Valve,Pvc Ball Valve,Ball Check Valve,Threaded Ball Valve
Haogong Valve Co Ltd , https://www.haogongvalve.com