The lithium-ion battery industry requires the integration of multiple technologies, including electrochemical, production, electronic, and materials development technologies. Lithium-ion batteries not only need continuous theoretical development, but also face correspondingly high production requirements. They must rely on excellent equipment, factory conditions, and highly skilled technical workers to produce qualified lithium-ion batteries. Below, we introduce the technical characteristics of Xianyi.com and the technological development trends of lithium-ion battery materials.
In terms of technological barriers to raw materials, the order of lithium-ion battery technology is: separator > anode material > electrolyte > anode material. However, the central issue that is currently hindering the industrialization of lithium-ion batteries is the anode material. On the one hand, the anode material is the most expensive component of lithium-ion batteries, reducing the availability of such materials. On the other hand, the cathode material is the decisive factor in the electrochemical performance of lithium-ion batteries, and current anode materials cannot fully meet the requirements for widespread use in inexpensive electric vehicles and industrial storage applications.
Cathode materials are the most important raw materials for lithium-ion batteries. Different cathode materials have their own advantages and disadvantages, and the type of cathode material chosen varies depending on the needs of inexpensive products. In the consumer electronics field, the functional requirements for lithium-ion battery cathode materials mainly focus on the energy density and safety of lithium-ion batteries. The functional requirements for power battery cathode materials are high voltage, high energy, high power, and wide temperature range. Lithium iron phosphate, lithium manganese oxide, and ternary materials are important raw materials for power lithium-ion battery cathode materials. In the field of power lithium batteries, lithium titanate is a new development direction.
Technical characteristics and development trends of lithium-ion battery materials
The technology and market for anode materials are relatively outdated, with primary carbon materials and graphite anode materials inevitably maintaining a dominant position in the market. The multiplier function of traditional graphite anode materials is insufficient to meet the requirements of lithium-ion batteries. In the consumer electronics field, to improve battery energy density, new high-capacity cathode materials, represented by silicon-carbon (Si-C) composite materials, represent the future development trend.
The production technology of separators has the highest barriers to entry, and the most important separator materials on the market are polyethylene (PE) and polypropylene (PP) based polyolefin separators. The future trend in separator development is towards thinner and safer separators. With the rapid rise of lithium-ion batteries in consumer electronics, electric vehicles, and other categories, and the future development of storage solutions, before the explosive growth of lithium-ion battery separators, breakthroughs in product functionality and quality are needed. The future trend of separators is to meet the functional requirements of high power, large capacity, long lifespan, and safe and reliable operation.
Electrolytes are typically composed of high-purity organic solvents, lithium salt electrolytes, necessary additives, and other materials. Under certain conditions and according to specific manufacturing processes, the electrolyte chain, which constitutes the largest proportion of the electrolyte cost and represents the highest technological barrier, is currently monopolized by Japan and South Korea. Lithium hexafluorophosphate is the most important lithium-ion battery electrolyte on the market. The future development trend of electrolytes is to meet the requirements of high voltage, wide temperature range, and high safety.
Currently, from the perspective of technological development, there are three major development trends in lithium-ion battery material technology: (1) the development of high-capacity lithium-ion power batteries for electric vehicles; (2) the development and application of new high-function electrode materials, especially the development of high-function anode materials; and (3) further reducing the cost of lithium-ion batteries and improving battery safety.
