How Does The Specific Energy Of The LFP Battery Exceed 180wh/Kg?-www.aotelec.com

How does the specific energy of the LFP battery exceed 180wh/Kg?

Nov 27,2021.

How does the specific energy of the LFP battery exceed 180wh/Kg?

Will monomer specific energy exceeding 180Wh/kg become a new watershed in power battery product technology?

Recently, the Ministry of Industry and Information Technology issued the "Lithium-ion Battery Industry Specification Conditions (2021 Edition)", Among them, the "Specification Conditions (2021)" mentioned that for the newly constructed power battery project, the energy density of the energy-type power battery project should be ≥180Wh/kg, and the energy density of the battery pack should be ≥120Wh/kg. In addition, the "Specification Conditions (2021)" also set requirements for the performance of expansion projects such as cathode materials, anode materials, electrolytes, and separators.

At present, the energy density of mainstream ternary battery cells produced in the industry is generally above 210Wh/kg, while the energy density of mainstream LFP battery cells is generally below 180Wh/kg. This means that once the technical indicators are implemented, they will have a certain impact on the industrialization of LFP batteries.

Industry insiders believe that, from a technical point of view, the energy density of LFP cells can be achieved beyond 180Wh/kg, but from the point of view of industrialization, it still has certain technical difficulties for power battery companies.

For power battery companies, there are mainly the following paths to achieve the energy density of LFP batteries exceeding 180Wh/kg:

One is to optimize the material system, such as upgrading the cathode material from lithium iron phosphate to lithium iron manganese phosphate, adopting silicon-doped lithium supplement technology, introducing new electrolytes and ultra-thin copper foil, etc., to increase the energy density of the cell.

The second is to optimize the cell structure design, increase the size of the cell to increase the battery capacity, increase the capacity of a single cell to at least 180Ah, and use lightweight technology to reduce the weight of the cell.