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A Self‐Powered, Rechargeable, and Wearable Hydrogel Patch for Wireless Gas Detection with Extraordinary Performance
Open accessAbstract
Flexible gas sensors play an indispensable role in diverse applications spanning from environmental monitoring to portable medical electronics. Full wearable gas monitoring system requires the collaborative support of high‐performance sensors and miniaturized circuit module, whereas the realization of low power consumption and sustainable measurement is challenging. Here, a self‐powered and reusable all‐in‐one NO 2 sensor is proposed by structurally and functionally coupling the sensor to the battery, with ultrahigh sensitivity (1.92%/ppb), linearity ( R 2 = 0.999), ultralow theoretical detection limit (0.1 ppb), and humidity immunity. This can be attributed to the regulation of the gas reaction route at the molecular level. The addition of amphiphilic zinc trifluoromethanesulfonate (Zn(OTf) 2 ) enables the H 2 O‐poor inner Helmholtz layer to be constructed at the electrode–gel interface, thereby facilitating the direct charge transfer process of NO 2 here. The device is then combined with a well‐designed miniaturized low‐power circuit module with signal conditioning, processing and wireless transmission functions, which can be used as wearable electronics to realize early and remote warning of gas leakage. This study demonstrates a promising way to design a self‐powered, sustainable, and flexible gas sensor with high performance and its corresponding wireless sensing system, providing new insight into the all‐in‐one system of gas detection.
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In the citing paper
“The sensor has ultra-high sensitivity (1.92% ppb−1), very low theoretical LOD (0.1 ppb) and excellent NO2 selectivity.”
From Functionalized Hydrogel-Based Wearable Gas and Humidity Sensors. (2023) · cites this paper as [214]
In the citing paper
“It works even in complex environments such as stretching, bending, sub-zero, and high humidity environment.”
From Functionalized Hydrogel-Based Wearable Gas and Humidity Sensors. (2023) · cites this paper as [214]
In the citing paper
“The authors also assembled it with miniaturized circuit modules, as shown in the Fig. 8g, and successfully built a self-powered integrated wireless NO2 monitoring system for real-time and remote gas detection.”
From Functionalized Hydrogel-Based Wearable Gas and Humidity Sensors. (2023) · cites this paper as [214]
In the citing paper
“Wu et al. [214] constructed a novel self-powered flexible NO2 sensor using the structure of Zn-zinc trifluoromethanesulfonate (Zn(OTf)2)/PAM hydrogel-Carbon, as demonstrated in Fig. 8f.”
From Functionalized Hydrogel-Based Wearable Gas and Humidity Sensors. (2023) · cites this paper as [214]
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Self-citation
Metadata
- Authors
- Wu, Z., Wang, H., Ding, Q., Tao, K., Shi, W., Liu, C., Chen, J., & Wu, J.
- Affiliations
- Sun Yat-sen University (CN)
- Northwestern Polytechnical University (CN)
- Tianjin University of Technology (CN)
- Corresponding author
- Wu, Jin
- Venue
- Advanced Functional Materials
- Publisher
- Wiley
- Published
- 2023-02-17
- Volume
- 33
- Issue
- 21
- ISSN
- 1616-301X (ISSN-L)
- 1616-3028
- OpenAlex
- W4321327816
- Cited by
- 162
- References
- 67
- Citations by year
- 2026: 32 · 2025: 53 · 2024: 47 · 2023: 30
- FWCI
- 12.03
- Type
- journal article
- Language
- en
- Open access
- bronze
- doi.org
- Locations
- Advanced Functional Materials (publishedVersion)
- Funders
- Fundamental Research Funds for the Central Universities (22lgqb17)
- National Natural Science Foundation of China (61801525)
- Topics
- Physical Sciences › Engineering › Electrical and Electronic Engineering › Gas Sensing Nanomaterials and Sensors
- Physical Sciences › Engineering › Biomedical Engineering › Advanced Sensor and Energy Harvesting Materials
- Physical Sciences › Chemistry › Analytical Chemistry › Electrochemical sensors and biosensors
- Keywords
- flexible gas sensors, NO2 gas sensing, hydrogel patch, self-powered sensing, rechargeable batteries, wearable electronics, zinc trifluoromethanesulfonate, inner Helmholtz layer
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