Application of Pressure Sintering Furnace in the Battery Materials Industry
07-09-2025 Author: KJ technology
The pressure sintering furnace is widely and critically used in the battery materials industry, especially in the preparation of solid-state batteries, lithium battery cathode materials, and new battery materials. It plays an important role, as follows:
1. Solid state battery field
Densification treatment of electrolyte layer
In the production of oxide solid-state batteries, the pressure sintering furnace densifies the electrolyte layer through a high-temperature and high-pressure environment. For example, during the sintering process of yttrium stabilized zirconia (YSZ) electrolyte, atoms undergo diffusion and rearrangement, resulting in an increase in electrolyte density, a decrease in porosity, and a significant improvement in ion conductivity.
Technical advantages: Accurately control parameters such as temperature, heating rate, and insulation time to avoid electrolyte layer cracking or performance degradation, ensuring high energy density and long cycle life of the battery.
Collaboration of all solid state battery core equipment
The pressure sintering furnace works in conjunction with isostatic pressing machines, solid-state laminating/winding machines, and other equipment to achieve densification treatment of solid-state battery electrodes or cells. For example, when the static press machine runs stably at a pressure of 600MPa, combined with the high-temperature treatment of the pressure sintering furnace, it effectively eliminates the internal voids of the battery cell, improves conductivity and energy density.
2. In the field of positive electrode materials for lithium batteries
Sintering of ternary positive electrode material
The sintering of ternary positive electrode materials (such as lithium nickel cobalt manganese oxide) requires strict control of parameters such as temperature, atmosphere, and time. The pressure sintering furnace improves the structural stability and electrochemical performance of materials by optimizing the process, thereby enhancing the energy density and cycle life of lithium batteries.
Equipment trend: Large scale and intelligent development to meet the needs of large-scale production; Introduce energy-saving and environmental protection technologies to reduce energy consumption and emissions.
Preparation of Lithium Iron Phosphate Positive Electrode Material
In the manufacturing of lithium iron phosphate precursor, the pressure sintering furnace uses nitrogen protection and precise temperature control to avoid the decomposition of raw materials such as glucose and sucrose, and prevent side reactions from occurring. Equipment such as push plate sintering furnaces ensure material sintering in an oxygen free environment and improve material performance through sealed design and nitrogen circulation.
3. Research and development of new battery materials
New positive electrode materials such as lithium rich materials and sulfides
The development of new positive electrode materials requires higher requirements for sintering processes. The pressure sintering furnace optimizes the microstructure and properties of materials through technologies such as segmented temperature control and atmosphere regulation, meeting the demands for high energy density, long cycle life, and safety in fields such as electric vehicles and energy storage systems.
Intermetallic compounds and composite materials
When preparing titanium aluminum (TiAl) intermetallic compounds, the pressure sintering furnace rapidly forms ordered phases, and the material properties are controlled by adjusting the process parameters. This type of material has low density and high temperature strength, and has potential application value in battery structural components.
4. Technological advantages and industry impact
Improve material performance
The pressure sintering furnace promotes particle rearrangement and plastic flow through a high-temperature and high-pressure environment, significantly improving the density and strength of materials. For example, after pressure sintering, the ion conductivity of solid-state battery electrolytes increases by more than 15%, and the battery performance is significantly enhanced.
Promote industrial upgrading
With the rapid development of new energy vehicles and energy storage markets, the demand for battery materials continues to grow. The technological innovation of pressure sintering furnaces, such as intelligent control and energy-saving and environmentally friendly design, helps the battery industry develop towards high efficiency, environmental protection, and sustainability.
