Fig. 2: MEA method for batteries and the magnetism characterization. | Nature Communications

Fig. 2: MEA method for batteries and the magnetism characterization.

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

Fig. 2: MEA method for batteries and the magnetism characterization.

a, b The device and the schematic of MEA for the graphite||NCM811 battery. The generation and intensity of magnetic field can be controlled by an external direct current power supply. c Temperature dependence inverse susceptibilities of NCM811 samples in lithiated state with various activation conditions. d Proportions of high and low-spin states Ni3+ with various activation conditions calculated from (c). e Schematic of the Ni3+ related super-exchange interaction in different spin states. High-spin Ni3+ ions typically engender robust super-exchange interactions, whereas the configuration of low-spin Ni3+ ions result in diminished super-exchange interactions.

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