Magnetoelectrical textiles based NdFeB@ZIF-8 MOFs composite particles with self-power ability for wearable electronics

Magnetoelectrical textiles, as self-power device to generate energy from motions, are promising building blocks for wearable electronic fields, but these traditional strategies towards magnetoelectrical textiles still suffer from insufficient stability and reliability, and the large-scale fabrication of magnetoelectrical textiles still remains challenging. Herein, soft magnetic fiber and its knitted fabric based NdFeB@ZIF-8 composite particles were proposed, and their electro-magnetic response performances were comprehensively characterized. NdFeB@ZIF-8 composite particles were synthesized, and they exhibited excellent magnetic property with the remnant magnetization (Mr) and coercivity (Hc) at 80 emg/g and 8604 Oe, respectively, the Ms. of NdFeB@ZIF-8 particles was 113.5 emu/g. The magnetoelectrical fibers prepared by micro-controlled flow spinning technology exhibited a breaking elongation of 575%. Driven by an external magnetic field, the magnetoelectrical fibers could bend up to 43°, and moved easily in tiny tube and lift a weight of 20 g. Similarly, the magnetoelectrical fabrics can undergo various deformations. Moreover, the magnetoelectric power generation system delivered a continuous and stable output voltage, allowing the generation of a stable electrical signal of 15 mV under various external forces. The maximum output peak power density was 551.25 mW/m2 when the resistance of the external load was 1 Ω. The presence of a magnetic field endowed magnetic fabrics with a certain degree of electromagnetic shielding effectiveness. In sum, this study employed an efficient and environmentally friendly fabricating strategy for magnetoelectrical textiles with self-power ability, showing great potential for the wearable electronics application.