Bioinspired High‐Performance Neuromorphic Devices Enabled by Thienoviologen‐Based Electrochemical Ion Gating
Abstract
Abstract Neuromorphic computing is a bioinspired paradigm that emulates the structure and functionality of biological neural networks, demanding cutting‐edge materials and device architectures. In this work, we present a bioinspired electrochemical neuromorphic device (BEND) utilizing a thienoviologen‐based electrolyte. The incorporation of thiophene groups into the viologen structure (ThV 2+ ) leads to a reduced energy gap, improved radical stability, and enhanced electrochemical activity. The device exhibits excellent ambient stability and continuously tunable conductivity in response to voltage pulse stimulation. When integrated into a convolutional neural network (CNN) for image recognition, BEND achieves an accuracy of nearly 80% on the Fashion‐MNIST dataset. Moreover, the device successfully mimics essential synaptic functions such as spike‐timing‐dependent plasticity (STDP), Pavlovian learning, and supports dual‐terminal logic gate operations. These results significantly expand the functional versatility of viologen‐based materials in neuromorphic electronics and offer new insights into the design of next‐generation electrochemical artificial synapses.
Article Details
Authors (7)
Siyu Sun
Xi’an Jiaotong University , , , ,
Yueyan Zhang
Frontier Institute of Science and Technology Interdisciplinary Research Center of Frontier science and technology State Key Laboratory for Strength and Vibration of Mechanical Structures Engineering Research Center of Key Materials for Efficient Utilization of Clean Energy of Shaanxi Province Xi'an Key Laboratory of Electronic Devices and Material Chemistry Institute of New Concept Sensors and Molecular Materials Shaanxi Key Laboratory of New Conceptual Sensors and Molecular Materials Xi'an...
Zhikang Han
Frontier Institute of Science and Technology, Interdisciplinary Research Center of Frontier science and technology, State Key Laboratory for Strength and Vibration of Mechanical Structures, Engineering Research Center of Key Materials For Efficient Utilization of Clean Energy of Shaanxi Province, Xi'an Key Laboratory of Electronic Devices and Material Chemistry Xi'an Jiaotong University Xi'an Shaanxi P. R. China
Chengjing Liu
Frontier Institute of Science and Technology Interdisciplinary Research Center of Frontier science and technology State Key Laboratory for Strength and Vibration of Mechanical Structures Engineering Research Center of Key Materials for Efficient Utilization of Clean Energy of Shaanxi Province Xi'an Key Laboratory of Electronic Devices and Material Chemistry Institute of New Concept Sensors and Molecular Materials Shaanxi Key Laboratory of New Conceptual Sensors and Molecular Materials Xi'an...
Bai Sun
Frontier Institute of Science and Technology Interdisciplinary Research Center of Frontier science and technology State Key Laboratory for Strength and Vibration of Mechanical Structures Engineering Research Center of Key Materials for Efficient Utilization of Clean Energy of Shaanxi Province Xi'an Key Laboratory of Electronic Devices and Material Chemistry Institute of New Concept Sensors and Molecular Materials Shaanxi Key Laboratory of New Conceptual Sensors and Molecular Materials Xi'an...
Wei Zhang
Gang He