In view of the serious problem of current leakage caused by self-discharge of micro-super capacitor

thestructure and leakage current characteristics of micro-super capacitor based on PPy/GO material system are studied.The micro-supercapacitor

designed and manufactured by adopting micro nano processing

is compact in structure and resistant in shock.The micro morphology of the membrane electrode is flaky and of large surface area.The voltage

leakage current and self-discharge data of the micro-supercapacitor during the charge and discharge are measured.The generation mechanism of leakage current of the micro super capacitor is analyzed from the perspective of ohmic leakage

faraday reaction and the self-discharge motor system due to overvoltage.The result shows that the leakage current due to ohmic leakage is of linear in the low voltage operating range.Any impurity containing chemical activity in the electrode material or electrolyte is the main factor to produce the leakage current of Faraday self-discharge.The normal operating voltage range of the micro super capacitor is defined between 0.1～2.5 V in accordance with the voltage and leakage current characteristic curve and the electrochemical stability window of gel electrolyte.The Faraday reaction rate is accelerated and the leakage current is increased by using higher charging voltage.A kind of technical measure for identifying the self-discharge process of the micro supercapacitor is provided by way of measuring the variation of voltage and leakage current in the process of charge and discharge.