期刊
CELL REPORTS PHYSICAL SCIENCE
卷 2, 期 11, 页码 -出版社
CELL PRESS
DOI: 10.1016/j.xcrp.2021.100623
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资金
- National Natural Science Foundation of China [21872119, 22072127, 22102139]
- Natural Science Foundation of Hebei Province [B2021203001, E2021203236, B2021203016]
- Talent Engineering Training Funding Project of Hebei Province [A201905004]
- Special Project for Local Science and Technology Development Guided by the Central Government of China [216Z1301G]
The transparent and highly ion-conductive hydrogel presented in this study integrates high strength, stretchability, and self-adhesiveness for iontronic sensors. It exhibits notable mechanical properties, high ion conductivity, and strong adhesion with various substrates, making it ideal for detecting complex human activities.
Ion-conductive hydrogels combining high-performance mechanical properties, high conductivity, and self-adhesion are ideal for ion-tronic sensors, but their fabrication remains a challenge. Here, we present a transparent and highly ion-conductive hydrogel that integrates high strength, stretchability, and self-adhesiveness for iontronic sensors. The hydrogel is prepared by introducing biomineral calcium ions into a polyacrylamide-sodium carboxymethyl cellulose (PAM-CMC) crosslinked network. The presence of Ca2+ not only induces the formation of dynamic crosslinked structure, endowing the hydrogel with notable mechanical properties (maximum strain of 1,480% and stress of 276 kPa), but also results in high ion conductivity (1.4 S.m(-1)). The hydrogel also exhibits strong adhesion with various substrates. Fabricated hydrogel-based sensors are highly sensitive to strain and stress changes with wide sensing ranges and can be used to detect complex human activities.
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