PdO-Nanoparticle-Embedded Carbon Nanotube Yarns for Wearable Hydrogen Gas Sensing Platforms with Fast and Sensitive Responses

被引：16

作者：

Son, Wonkyeong ^{[1
,2
]}

Lee, Duck Weon ^{[3
]}

Kim, Young Kwang ^{[4
]}

Chun, Sungwoo ^{[5
]}

Lee, Jae Myeong ^{[1
]}

Choi, Jin Hyeong ^{[1
]}

Shim, Woo Sub ^{[6
]}

Suh, Dongseok ^{[2
]}

Lim, Sang Kyoo ^{[4
]}

Choi, Changsoon ^{[1
]}

机构：

[1] Dongguk Univ, Dept Energy & Mat Engn, Seoul 04620, South Korea

[2] Sungkyunkwan Univ, Dept Energy Sci, Suwon 16419, South Korea

[3] Korea Adv Inst Sci & Technol, Dept Mech Engn, Daejeon 34141, South Korea

[4] Daegu Gyeongbuk Inst Sci & Technol DGIST, Div Energy Technol, Daegu 42988, South Korea

[5] Korea Univ, Dept Elect & Informat Engn, Sejong 30019, South Korea

[6] Minist Employment & Labor, Chem Accid Prevent Div, Sejong 30117, South Korea

来源：

ACS SENSORS | 2023年 / 8卷 / 01期

基金：

新加坡国家研究基金会;

关键词：

palladium oxide; reduction; hydrogen gas sensing platform; biscrolling technology; spinnable carbon nanotube; THIN-FILMS; SENSOR; NANOWIRES; SUBSTRATE; AIR;

D O I：

10.1021/acssensors.2c01743

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Hydrogen (H-2) gas has recently become a crucial energy source and an imperative energy vector, emerging as a powerful next-generation solution for fuel cells and biomedical, transportation, and household applications. With increasing interest in H-2, safety concerns regarding personal injuries from its flammability and explosion at high concentrations (>4%) have inspired the development of wearable pre-emptive gas monitoring platforms that can operate on curved and jointed parts of the human body. In this study, a yarn-type hydrogen gas sensing platform (HGSP) was developed by biscrolling of palladium oxide nanoparticles (PdO NPs) and spinnable carbon nanotube (CNT) buckypapers. Because of the high loading of H-2-active PdO NPs (up to 97.7 wt %), when exposed to a flammable H-2 concentration (4 vol %), the biscrolled HGSP yarn exhibits a short response time of 2 s, with a high sensitivity of 1198% (defined as Delta G/G(0) x 100%). Interestingly, during the reduction of PdO to Pd by H-2 gas, the HGSP yarn experienced a decrease in diameter and corresponding volume contraction. These excellent sensing performances suggest that the fabricated HGSP yarn could be applied to a wearable gas monitoring platform for real-time detection of H-2 gas leakage even over the bends of joints.

引用

页码：94 / 102

页数：9