Development of non-contact detection system for energy storage materials

Magnetically Mediated Thermoacoustic Detecting Method (MMTDM) is a non-contact conductivity detection method for energy storage materials of high resolution. In this paper, in order to verify the feasibility of MMTDM to detect the electrical conductivity of energy storage materials, firstly, the principle of MMTDM was studied. Secondly, a set of narrow pulse magnetic field excitation of the experimental system for MMTDM was designed and established. At last, the self-made graphene target was put into the detection area, which emitted the thermoacoustic signal. The signal was detected by the ultrasonic transducer after being amplified by 60dB. The experimental results demonstrate that the system can be used for non-contact detection of electrical conductivity of energy storage materials.