面向非接触无源电流监测的耐高温柔性磁电复合材料

随着高度小型化和集成化电子器件的迅速发展，人们对监测电子设备电状态的器件有了更高的要求。当前基于接触式和传统非接触式的电流传感器等监测技术存在着诸多不足，如稳定性差、灵敏度低、成本高和不耐热等。采用原位涂布和无极化的方法制备了基于聚乳酸/核黄素 (PLLA/VB2) 复合材料和铁钴钒 (FeCoV) 的新型磁电电流传感器 (MCS)。PLLA/VB2复合材料的应用使MCS具有自供电和高耐热性，FeCoV的应用使MCS具有高度的灵活性。原位涂布和无极化的方法赋予了PLLA/VB2复合材料和FeCoV良好的界面耦合。实验结果表明，在1590 A·m^-1(@60 Hz) 外加磁场下，MCS的输出电压高达0.76 mV，MCS的线性度高达0.996，平均误差为2%~3%，在120℃高温下性能保持稳定。MCS具有小型化、自供电、高耐热和高灵活性等特点，在电子器件安全监测领域具有巨大应用潜力。

With the rapid development of highly miniaturized and integrated electronic devices, the electronic devices are expected to operate under higher convenience and effectiveness to monitoring the electrical status of the electronic equipment. Current monitoring technologies based on contact and traditional non-contact current sensors suffers from several issues, such as poor stability, low sensitivity, high cost, and heat intolerance, etc. In this paper, a novel magnetoelectric current sensor (MCS) based on PLLA/VB2 composite and FeCoV was prepared using in-situ coating and poling-free method. The use of PLLA/VB2 composite makes the MCS self-powered and high heat resistance, and the use of FeCoV makes the MCS highly flexible. The in-situ coating and poling-free methods endow the PLLA/VB2 composite and FeCoV good interfacial coupling. As a results, under the applied magnetic field of 1590 A·m^-1(@60 Hz), the output voltage of MCS is up to 0.76 mV, the linearity of MCS is up to 0.996, the average error is 2%-3%, and the performance remains stable at high temperature of 120℃. The MCS with small size, self-powering, high heat resistance and high flexibility has great potential in safety monitoring of the electronic devices fields.