Microenvironment‐Engineered Piezoionic Hydrogel Nanogenerators for Enhanced Energy Harvesting and Sensing

Aochen Wang; Shiao Feng; Tianxiao Xiao; Gaobo Wang; Binyuan Zhu; Weibin Zhou; Longfei Wang

doi:10.1002/sys3.70004

journal article Open Access Jun 01, 2025

Microenvironment‐Engineered Piezoionic Hydrogel Nanogenerators for Enhanced Energy Harvesting and Sensing

Aochen Wang

Shiao Feng Tianxiao Xiao Gaobo Wang Binyuan Zhu Weibin Zhou Longfei Wang

SmartSys Vol. 1 No. 2 · Wiley

View at Publisher Save 10.1002/sys3.70004

Abstract

ABSTRACTThe demand for advanced materials capable of both efficient energy harvesting and high‐performance sensing has spurred research on piezoionic hydrogels. However, their low current and voltage outputs remain a bottleneck. In this study, an innovative piezoionic hydrogel nanogenerator (PHNG) based on polyacrylamide (PAM) hydrogel is developed using a microenvironment‐engineered strategy. By precisely modulating the internal acid‐base environment and incorporating optimized bubble structures, the device achieves a remarkable current output of up to 610.5 μA, which significantly outperforms most reported PHNGs. Moreover, the working principle of the microenvironment‐engineered PAM hydrogel under mechanical stress is systematically investigated. The enhancement in current output is primarily attributed to the modulation of the internal acid‐base environment, which increased the disparity in ion migration rates, and the incorporation of bubbles that induced lateral stress, enhancing ion mobility. The optimized PHNG exhibits high sensitivity (37.657 μA kPa−1), superior stretchability and good stability. Finally, an intelligent PHNG‐based electronic chessboard is developed to showcase the device's advanced sensing capabilities. This research provides new strategies for boosting PHNG performance and broadens its application prospects.

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Details

Published: Jun 01, 2025
Vol/Issue: 1(2)
License: View

Authors

A

Aochen Wang

College of Electronic Information and Automation Tianjin University of Science and Technology Tianjin China

S

Shiao Feng

College of Electronic Information and Automation Tianjin University of Science and Technology Tianjin China

T

Tianxiao Xiao

Department of Electronic Engineering The Chinese University of Hong Kong Hong Kong China

G

Gaobo Wang

School of Nanoscience and Engineering University of Chinese Academy of Sciences Beijing China

B

Binyuan Zhu

The Affiliated High School of Peking University Beijing China

W

Weibin Zhou

College of Electronic Information and Automation Tianjin University of Science and Technology Tianjin China

L

Longfei Wang

School of Nanoscience and Engineering University of Chinese Academy of Sciences Beijing China

Cite This Article

Aochen Wang, Shiao Feng, Tianxiao Xiao, et al. (2025). Microenvironment‐Engineered Piezoionic Hydrogel Nanogenerators for Enhanced Energy Harvesting and Sensing. SmartSys, 1(2). https://doi.org/10.1002/sys3.70004

Microenvironment‐Engineered Piezoionic Hydrogel Nanogenerators for Enhanced Energy Harvesting and Sensing

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