Based on liquid electrolyte system and target at industrialization. Through the development and application of new Li-ion battery materials and new Li-ion battery production process, improve the cycle performance, safety performance, energy density and other performance indicators of batteries, and provide technical guidance and support for the next generation of Li-ion battery products.
High energy density direction；Fast charge direction；High safety direction
Research and development technology direction:
● Conventional ternary Li-ion battery
● High-nickel ternary Li-ion battery
● Lithium-rich manganese lithium battery with high specific energy
● Implantable medical batteries
● High-voltage and high volume specific energy lithium cobalt acid battery
● Semi-solid-state/All-solid-state lithium battery
Tackling direction: Manganese-based cathode materials with high energy density and long cycle life；Low cost (lithium iron phosphate, approximate: 20-30%)；Good fast charging and low temperature performance；Security is between ternary and lithium iron phosp
R&D direction: Mechanism study - Interface dephasing mechanism, bulk structure；Optimization of cathode materials - Material composition optimization, element doping, gradient structure, and sintering process optimization；Multi-dimensional stable interface - Thin-layer full-coating technology, conductive carbon layer coating, in situ CEI film；Development of manganese-based battery system - binder -Electrolyte-Separator, silicon-carbon anode, quasi solid/all-solid state
Application development group functions：Material preparation: Preparation of samples of Li-ion battery cathode materials at gram level, kilogram level, and 10 kilogram level (high nickel ternary, high-voltage lithium cobalt oxides);
Process realization: Design, implementation and verification of lithium-ion battery cathode material products and processes;
Customized service: Design and development of new products and new processes of lithium-ion battery cathode materials;
Electrical performance test: Button cell evaluation of lithium-ion battery cathode materials.
Electrolyte lab introduction:
Main research directions include electrolyte with fast charging, high energy density and wide temperature usage range, design of electrolyte meeting different cell systems with comprehensive consideration of the performance of various Li-ion battery electrolyte solution, lithium salt, and additive; and construct low-impedance stable SEI (CEI) interface film to meet the performance requirements of various cell systems on cycle, rate, storage and safety.
Main research directions of the electrolyte R&D Lab:
1.High energy density and super-fast charging electrolyte for consumer batteries (Above 3C super-fast charge for ≥740wh/l system)；2.Super-fast charging electrolyte for power cell (Above 5C super-fast charge for ≥240wh/kg system)；3. High energy density electrolyte for power cell (≥320wh/kg)；4.High energy density quasi-solid electrolyte for power cell (≥320wh/kg)；5.Ultra low-temperature battery system electrolyte (usage temperature range -100-50°C)；6. Lithium-rich high-voltage electrolyte (Voltage≥4.6V)
The functional material R&D lab is mainly engaged in the development of cathode and anode electrode binder, conductive agent and auxiliary materials in the lithium battery. Based on the lithium battery functional material, improve the lithium battery energy density, and improve cycle, cut cost, and enable application under extreme conditions. Focus on the study of new conductive agent, binder of silicon carbon anode electrode system with high specific energy, and commit to the failure behavior analysis of functional materials and development of related cathode and anode electrodes. In addition, this lab is the only organic synthesis lab in TIES, and is capable of synthesizing small organic molecules and high molecules.
R&D direction: Graphene composite conductive agent ;Silicon anode electrode binder ;Current collector
Main R&D direction includes cathode and anode electrode system with high specific energy Focus on the research of electrode technologies including high-voltage lithium cobalt oxides, high nickel ternary, high-silicon anode electrode and other systems, and improve the cell energy density, cycle and safety performance through solification, pre-lithiation, and electrode microstructure design and other technologies.
Cathode electrode system development and improvement technology development of high-voltage lithium cobalt oxides;
High nickel cathode electrode system development and modification technology development;
High silicon anode electrode system development and modification technology development;
Solid-state battery technology development and modification technology development;
Functional additive screening and application boundary exploration.