The energy density value of lithium batteries reflects the relationship between the size and the energy size of the battery:
Energy density ρ=E/V
Where E is the battery energy (also called capacity), V is the battery volume.
The energy E of the battery is reflected in ampere-hours. For example, 2AH is equivalent to 2A amp hours (or 2000mA hours).
The higher the energy density of the battery. For the same energy, the size of the battery is smaller.
Or, for equal size, the greater the energy density of the battery, the greater the energy of the battery.
Energy density of ternary lithium battery
100~120Wh/kg. Energy density is the ratio of battery energy to mass, which is slightly lower than other lithium-ion batteries. The specific energy of lithium iron phosphate battery is about 120~140 wh/kg and the density spatial is about 200 ~ 250 wh/l.
1. Lithium iron phosphate is a lithium-ion battery electrode material with the chemical formula LiFePO4 (LFP for short). It is mainly used in various lithium-ion batteries. Since the Japanese NTT first revealed the olivine structure lithium battery cathode material of AyMPO4 (A is an alkali metal, M is a combination of CoFe: LiFeCoPO4) in 1996, in 1997, John.B .Goodenough and others from the University of Texas at Austin in the group studied in the United States, also reported the reversible transfer of lithium into and out of LiFePO4.
2. Compared with traditional lithium-ion secondary battery cathode materials, LiMn2O4 spinel structure and LiCoO2 layered structure, LiMPO4 has wider raw material sources, is cheaper and has no environmental pollution.
150 to 250Wh/kg.
According to data from the Ba Encyclopediaidu, the energy density of ternary lithium batteries is generally between 150 and 250Wh/kg, and the specific values depend on the materials of the positive and negative electrodes, electrolytes and other design parameters.
Ternary polymer lithium batteries refer to lithium batteries with ternary cathode materials using lithium-nickel-cobalt manganate or lithium-nickel-cobalt aluminate as the cathode material.