According to foreign media reports, Japan’s Toshiba’s corporate R&D center in Kawasaki has developed a high-density TiNb. 2O7 (HD-TNO) Composite electrode consisting of micro-TNO spherical secondary particles with a carbon coating on the surface. It is said that the anode has excellent performance, long service life and large battery capacity. It is more than twice the performance of the LTO composite anode.
The research team also uses HD-TNO anodes and LiNi 0.6Co 0.2Mn 0.2O2 (NCM) The cathode is made of a large-sized lithium-ion battery with a battery capacity of 49 Ah, which is suitable for automotive applications. The cell has an energy density of up to 350 Wh L -1When the state of charge (SOC) is 50%, the input-power density is up to 10 kW L −1The duration is 10 seconds. In addition, in fast charge mode, charging the battery from 0% to 90% takes less than 6 minutes. In contrast, the energy density of the comparable LTO/NCM battery cells For 177 Wh L-1.
High rate discharge tests show that at 10 times, the capacity retention rate is as high as 93%. At 1x rate, after 7000 charge and discharge, the capacity retention rate is as high as 86%. It is estimated that After completing 14,000 charge and discharge, its capacity retention rate is 80%.
Researchers also use carbon-coated micro-TNO spherical secondary particles to produce high-density electrodes with high tap density, which reduces the amount of carbon conductor and binder. .
