Fig. 1: The proposed mechanism of the magneto-electrochemical synergistic activation (MEA) in the graphite||NCM811 battery. | Nature Communications

Fig. 1: The proposed mechanism of the magneto-electrochemical synergistic activation (MEA) in the graphite||NCM811 battery.

From: Noninvasive rejuvenation strategy of nickel-rich layered positive electrode for Li-ion battery through magneto-electrochemical synergistic activation

Fig. 1: The proposed mechanism of the magneto-electrochemical synergistic activation (MEA) in the graphite||NCM811 battery.

Schematic of proposed mechanism of MEA effect on NCM811 electrode. When NCM811 was applied in electrochemical activation, the content of high-spin Ni3+ increased, leading to Ni/Li antisite disorder and degraded electrochemical performance due to the strong super-exchange interaction. When employing the MEA strategy, Ni3+ transition to a low-spin state. This strategic intervention further realizes the ordered rearrangement of Ni/Li cations within the material, enabling the enhancement and efficient upcycling of NCM811.

Back to article page