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Updated: Apr 30, 2026

Evaluating the Electrochemical Properties of Supercapacitors using the Three-Electrode System
Published on: January 7, 2022
Dual-layer-structured nickel hexacyanoferrate/MnO2 composite as a high-energy supercapacitive material based on the
1Hefei National Laboratory for Physical Sciences at the Microscale, Department of Materials Science & Engineering, Collaborative Innovation Center of Suzhou Nano Science and Technology, University of Science and Technology of China , Hefei 230026, China.
Abstract:
A dual-layer composite structure composed of a metal-organic framework structure (NiHCF) with tunable open channels and typical pseudocapacitive manganese dioxide is constructed here as an electrode material for supercapacitors. This type of structure shows enhanced specific capacitance, high energy density, and excellent rate capability and stability. The specific capacitance of the composite electrode is much larger than the sum of each part, and a synergy effect of the dual-layer structure named "interlayer concentration enhancement effect" (ICE effect for short) was proposed to account for this excellent electrochemical performance.
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