Supercapacitor diode is a novel ion device that performs both supercapacitor energy storage and ion diode rectification functions.However,previously reported devices are limited by their large size and complex processes.In this work,we demonstrate a screen-printed micro supercapacitor diode(MCAPode)that based on the insertion of a finger mode with spinel ZnCo2O4 as cathode and activated carbon as anode for the first time,and featuring an excellent area specific capacitance(1.21 mF cm-2 at 10 mV s-1)and high rectification characteristics(rectification ratio I of 11.99 at 40 mV s-1).Taking advantage of the ionic gel electrolyte,which provides excellent stability during repeated flexing and at high temperatures.In addition,MCAPode exhibits excellent electrochemical performance and rectifica-tion capability in"AND"and"OR"logic gates.These findings provide practical solutions for future expan-sion of micro supercapacitor diode applications.
Guangdong Basic Research Center of Excellence for Structure and Fundamental Interactions of Matter,Guangdong Provincial Key Laboratory of Nanophotonic Functional Materials and Devices,School of Information and Optoelectronic Science and Engineering & South China Academy of Advanced Optoelectronics,Guangzhou 510006,Guangdong,China
Department of Materials Science and Engineering,Sun Yat-Sen University,Guangzhou 510275,Guangdong,China
College of Materials Science and Engineering,Guilin University of Technology,Guilin 541004,Guangxi,China
Key Project of National Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaSpecial Project for Marine Economy Development of Guangdong ProvinceInternational Cooperation Base of Infrared Reflection Liquid Crystal Polymers and DeviceGuangdong Basic and Applied Basic Research Foundation
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