Highly conductive, stretchable, durable, breathable electrodes based on electrospun polyurethane mats superficially decorated with carbon nanotubes for multifunctional wearable electronics

Luo, Guoxi; Xie, Jiaqi; Liu, Jielun; Zhang, Qiankun; Luo, Yunyun; Li, Min; Zhou, Wenke; Chen, Ke; Li, Zhikang; Yang, Ping; Zhao, Libo; Teh, Kwok Siong; Wang, Xiaozhang; Dong, Linxi; Maeda, Ryutaro; Jiang, Zhuangde

doi:10.1016/j.cej.2022.138549

Cited by 84 publications

(35 citation statements)

References 89 publications

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“…In practice, the stability of electronic devices for operation under extreme conditions remained a huge concern. Undoubt-edly, in addition to excellent electrical performance, wearable devices desire more practical functionalities, such as waterresistance or washability, [109,120,184,219,291,292,41] acid and alkali resistance and corrosion-resistance, [293][294][295] stain-resistance, [296,297] diverse and large deformation stability, [298][299][300] long-term usage stability, [301][302][303][304] and so on. For instance, de Medeiros et al developed a degradable omniphobic silk-based coils (OSCs) utilizing silk proteins, CNT, and chitin carbon nanoflakes.…”

Section: Sensors and E-skinsmentioning

confidence: 99%

Elastic Fibers/Fabrics for Wearables and Bioelectronics

et al. 2022

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Wearables and bioelectronics rely on breathable interface devices with bioaffinity, biocompatibility, and smart functionality for interactions between beings and things and the surrounding environment. Elastic fibers/fabrics with mechanical adaptivity to various deformations and complex substrates, are promising to act as fillers, carriers, substrates, dressings, and scaffolds in the construction of biointerfaces for the human body, skins, organs, and plants, realizing functions such as energy exchange, sensing, perception, augmented virtuality, health monitoring, disease diagnosis, and intervention therapy. This review summarizes and highlights the latest breakthroughs of elastic fibers/fabrics for wearables and bioelectronics, aiming to offer insights into elasticity mechanisms, production methods, and electrical components integration strategies with fibers/fabrics, presenting a profile of elastic fibers/fabrics for energy management, sensors, e‐skins, thermal management, personal protection, wound healing, biosensing, and drug delivery. The trans‐disciplinary application of elastic fibers/fabrics from wearables to biomedicine provides important inspiration for technology transplantation and function integration to adapt different application systems. As a discussion platform, here the main challenges and possible solutions in the field are proposed, hopefully can provide guidance for promoting the development of elastic e‐textiles in consideration of the trade‐off between mechanical/electrical performance, industrial‐scale production, diverse environmental adaptivity, and multiscenario on‐spot applications.

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Section: Sensors and E-skinsmentioning

confidence: 99%

Elastic Fibers/Fabrics for Wearables and Bioelectronics

et al. 2022

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“…With the rapid development of biomedical and wearable sensors, the monitoring of physiological information related to human healthcare, including respiration [ 1 ], heartbeat [ 2 ], pulse [ 3 ] and behavioral activities [ 4 , 5 , 6 ], has received widespread attention. So far, many different working principles have been reported for physiological signal monitoring [ 7 , 8 , 9 , 10 , 11 , 12 , 13 , 14 , 15 , 16 , 17 , 18 ] and good progress has been made. Compared with other existing soft devices based on piezoresistive [ 9 , 10 , 11 ], capacitive [ 12 ], triboelectric [ 13 , 14 , 15 , 16 ] or magnetoelastic effects [ 17 ], piezoelectric devices have received great interest in the field of flexible wearable electronics due to their simple structure, efficient electromechanical coupling and self-powered characteristics [ 19 , 20 ].…”

Section: Introductionmentioning

confidence: 99%

“…So far, many different working principles have been reported for physiological signal monitoring [ 7 , 8 , 9 , 10 , 11 , 12 , 13 , 14 , 15 , 16 , 17 , 18 ] and good progress has been made. Compared with other existing soft devices based on piezoresistive [ 9 , 10 , 11 ], capacitive [ 12 ], triboelectric [ 13 , 14 , 15 , 16 ] or magnetoelastic effects [ 17 ], piezoelectric devices have received great interest in the field of flexible wearable electronics due to their simple structure, efficient electromechanical coupling and self-powered characteristics [ 19 , 20 ]. Currently, research on flexible piezoelectric materials has flourished, such as zinc oxide (ZnO) [ 21 , 22 ], poly(vinylidene fluoride) (PVDF) [ 23 , 24 ] and its copolymers [ 25 , 26 ].…”

Section: Introductionmentioning

confidence: 99%

Flexible Lead-Free Piezoelectric Ba0.94Sr0.06Sn0.09Ti0.91O3/PDMS Composite for Self-Powered Human Motion Monitoring

Deng

Yang

et al. 2023

JFB

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Piezoelectric wearable electronics, which can sense external pressure, have attracted widespread attention. However, the enhancement of electromechanical coupling performance remains a great challenge. Here, a new solid solution of Ba1−xSrxSn0.09Ti0.91O3 (x = 0.00~0.08) is prepared to explore potential high-performance, lead-free piezoelectric ceramics. The coexistence of the rhombohedral phase, orthorhombic phase and tetragonal phase is determined in a ceramic with x = 0.06, showing enhanced electrical performance with a piezoelectric coefficient of d33~650 pC/N. Furthermore, Ba0.94Sr0.06Sn0.09Ti0.91O3 (BSST) is co-blended with PDMS to prepare flexible piezoelectric nanogenerators (PENGs) and their performance is explored. The effects of inorganic particle concentration and distribution on the piezoelectric output of the composite are systematically analyzed by experimental tests and computational simulations. As a result, the optimal VOC and ISC of the PENG (40 wt%) can reach 3.05 V and 44.5 nA, respectively, at 138.89 kPa, and the optimal sensitivity of the device is up to 21.09 mV/kPa. Due to the flexibility of the device, the prepared PENG can be attached to the surface of human skin as a sensor to monitor vital movements of the neck, fingers, elbows, spine, knees and feet of people, thus warning of dangerous behavior or incorrect posture and providing support for sports rehabilitation.

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“…This Ni-doped WC-based self-supporting electrocatalyst exhibited excellent catalytic performance for efficient hydrogen production on the CFP surface by taking advantage of properties such as high specific area and high conductivity of CFP. Luo et al [ 18 ] recently reported a new type of stretchable polymer carbon nanotube (CNF) composite electrode. Due to the excellent electrical and mechanical properties of CNF, the composite electrodes embedded with long CNF not only form an excellent conductive network (low sheet resistance of 30∼50 Ω/sq) but also have suitable tensile properties (recoverable stretching rate up to 200%) and excellent stability (over 20,000 bending and stretching cycles).…”

Section: Introductionmentioning

confidence: 99%

Pore-Rich Cellulose-Derived Carbon Fiber@Graphene Core-Shell Composites for Electromagnetic Interference Shielding

Yang

Wan

Huang³

et al. 2022

Nanomaterials

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Because of serious electromagnetic pollution caused by the widespread use of radio frequency equipment, the study of electromagnetic interference (EMI) shielding materials has been a long-standing topic. Carbon fiber and graphene composites have great potential as EMI shielding materials due to their unique microstructure and electrical conductivity. In this work, a novel kind of core-shell composite is fabricated based on the pore-rich pine needles-derived carbon fibers (coded as PNCFs) core and the graphene shell. The pore-rich PNCFs are created by KOH activation, and the integration between the pore-rich PNCFs and the graphene relies on a plasma-enhanced chemical vapor deposition (PECVD) method. The conductivity of the pore-rich PNCFs@graphene core-shell composite reaches 4.97 S cm−1, and the composite has an excellent EMI shielding effectiveness (SE > 70 dB over X-band (8.2–12.4 GHz)) and achieves a maximum value of ~77 dB at 10.4 GHz, which is higher than many biobased EMI shielding materials in the recent literature. By calculation and comparison, the large absorption loss (accounting for 90.8% of total loss) contributes to reducing secondary radiation, which is quite beneficial for stealth uses. Thus, this work demonstrates a promising design method for the preparation of green high-performance composites for EMI shielding and stealth applications (such as warcrafts, missiles, and stealth wears).

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Highly conductive, stretchable, durable, breathable electrodes based on electrospun polyurethane mats superficially decorated with carbon nanotubes for multifunctional wearable electronics

Cited by 84 publications

References 89 publications

Elastic Fibers/Fabrics for Wearables and Bioelectronics

Elastic Fibers/Fabrics for Wearables and Bioelectronics

Flexible Lead-Free Piezoelectric Ba0.94Sr0.06Sn0.09Ti0.91O3/PDMS Composite for Self-Powered Human Motion Monitoring

Pore-Rich Cellulose-Derived Carbon Fiber@Graphene Core-Shell Composites for Electromagnetic Interference Shielding

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