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Related Experiment Video

Updated: Jul 16, 2026

Merging Ion Concentration Polarization between Juxtaposed Ion Exchange Membranes to Block the Propagation of the Polarization Zone

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Published on: February 23, 2017

Monolithic ion-electron coupling interfaces enable low-impedance moisture-electric generators.

Chenkai Zhang^1,2, Shanfei Liu^1,2, Kun Ni^1,2

¹Soochow Institute of Energy and Material Innovations, Key Laboratory for Advanced Carbon Materials and Wearable Energy Technologies of Jiangsu Province, College of Energy, Soochow University, Suzhou 215006, PR China. ryliu@suda.edu.cn.

Materials Horizons

|July 15, 2026

Summary

Researchers developed a new moisture-electric generator using silicon nanowires and hydrogel. This design improves energy harvesting by creating continuous pathways for ion and electron flow, boosting device performance.

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Last Updated: Jul 16, 2026

Merging Ion Concentration Polarization between Juxtaposed Ion Exchange Membranes to Block the Propagation of the Polarization Zone

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In Situ Transmission Electron Microscopy with Biasing and Fabrication of Asymmetric Crossbars Based on Mixed-Phased a-VOx

In Situ Transmission Electron Microscopy with Biasing and Fabrication of Asymmetric Crossbars Based on Mixed-Phased a-VO_x

Published on: May 13, 2020

Area of Science:

Materials Science
Energy Harvesting
Nanotechnology

Background:

Moisture-electric generators (MEGs) harness atmospheric energy but are limited by inefficient ion-electron coupling at interfaces.
Current approaches often neglect interfacial impedance from discontinuous contacts, hindering performance.

Purpose of the Study:

To engineer a monolithic architecture for enhanced ion-electron coupling in MEGs.
To investigate the impact of continuous interfacial pathways on device performance and energy conversion efficiency.

Main Methods:

Fabrication of a monolithic silicon nanowires (SiNWs)/ionic hydrogel architecture.
Characterization using impedance spectroscopy and distribution of relaxation time analysis.
Performance evaluation under controlled temperature and humidity conditions.

Main Results:

The monolithic interface significantly reduced charge transfer resistance (over one order of magnitude).
The device achieved an open-circuit voltage of 1.35 V and current density of 27.5 µA cm⁻².
Performance exceeded benchmark devices by approximately 60%.

Conclusions:

The monolithic SiNWs/hydrogel architecture establishes continuous ion-electron coupling pathways.
This interface engineering strategy effectively reduces interfacial impedance in hydrovoltaic systems.
Optimized ion-electron coupling is crucial for efficient moisture-enabled energy conversion.