New CR2016 battery have begun mass production. What is the development route of lithium battery technology?

　　New CR2016 battery have begun mass production. What is the development path of lithium battery technology? Through the unremitting efforts of R&D personnel and engineers, from lead-acid batteries, nickel metal hydride batteries, nickel cadmium batteries, to lithium iron phosphate batteries, to the current mainstream ternary batteries, every improvement is the effort of a generation. Based on improving the safety, energy density, and rate performance of CR2016 battery, combined with the current status of battery research and development, a development route for future CR2016 battery is summarized.

　　New CR2016 battery have begun mass production. What is the development path of lithium battery technology?

　　Compared with existing CR2016 battery, the new CR2016 battery can reduce material costs by about 40% and shorten the manufacturing process to one-third. Compared with all-solid-state batteries, it has fewer technical problems and achieves high safety and high density, and is attracting attention.

　　New lithium battery technology, which has higher energy density and is more stable than solid-state batteries, may change the development path of power battery technology in the next stage. Previously, many battery research institutions have regarded solid-state batteries as their first choice for the next stage, and energy density is also the most important technical parameter of power batteries at present.

　　High-performance, low-cost new lithium-ion batteries and new system batteries are the main directions for the development of new energy vehicle power batteries.

　　The new lithium-ion battery uses high-voltage/high-capacity cathode materials, high-capacity anode materials and high-voltage electrolyte to replace existing lithium-ion battery materials. It has obvious advantages in battery cost, specific energy and energy density, and will be able to significantly improve new energy vehicles. Economy and convenience of use require solving key issues such as durability, environmental adaptability and safety.

　　The new lithium battery has lower cost and higher specific energy. It is still in the development stage of basic research. It is expected that the new lithium-ion battery will be commercialized in 2020 and the new system battery will be practical in 2023.

　　Many previous studies were not optimistic about the next stage of lithium metal batteries, believing that the traditional liquid electrolyte used in the battery must be replaced by a solid electrolyte to maintain the lifespan and high energy density required for long-term stable cycling. However, in the latest experiments, it was found that anode-free lithium metal batteries using liquid electrolytes can still retain 80% of the battery capacity and have high stability after 90 charge and discharge cycles, and their energy density is no less than that of solid-state batteries. Battery.

　　Several lithium battery materials with the most potential in the future

　　(1) Silicon-carbon composite anode material: high energy density, more than 400wh/kg in industrialization, but serious volume expansion and poor circulation;

　　(2) Lithium titanate: cycled more than 10,000 times, volume change <1%, no dendrite formation, excellent stability, fast charging, but high price and low energy density, about 170wh/kg;

　　(3) Graphene: It can be used as anode material and cathode additive. It has excellent conductivity, fast ion transmission, poor first efficiency, about 65%, poor circulation, and high price;

　　(4) Lithium-rich manganese-based battery: energy density is about 900wh/kg, rich in raw materials, but low first efficiency, poor safety and cycle, and low rate performance;

　　Another potential way to realize new CR2016 battery is to use solid electrolytes, which are considered by many studies to be the most feasible technological means in the future. However, current solid electrolytes cannot achieve a stable dendrite-free state after multiple charges and discharges. At the same time, there are also problems in large-scale mass production. Production lines often require billions of dollars in investment.

　　If the traditional liquid electrolyte solution of liquid electrolyte is used, existing manufacturing equipment can quickly commercialize and mass-produce this new lithium battery while satisfying safety, density and lifespan.

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