Tellurium-nanowire-doped thermoelectric hydrogel with high stretchability and seebeck coefficient for low-grade heat energy harvesting

Kong, Seong Ho; Huang, Zhangfan; Hu, Yang; Jiang, Yawei; Lu, Yuehui; Zhao, Weiwei; Shi, Qiuwei; Yuan, Mengwei; Dai, Baoying; Li, Jiahui; Yang, Wen; Xie, Yannan

doi:10.1016/j.nanoen.2023.108708

Cited by 13 publications

(5 citation statements)

References 51 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…25,26 Among them, PEDOT/PSS displays unique advantages in preparing conductive hydrogels owing to its simple preparation, high electrical conductivity, and good water dispersibility. 27,28 The highly intrinsic conductive PEDOT/PSS polymer chain can not only provide good conductivity for the conductive hydrogels but also impart the conductive hydrogels with high strain-sensing performance. 29 The PEDOT and PSS polymer chains carry positive and negative charges, respectively.…”

Section: Introductionmentioning

confidence: 99%

“…Conducting polymers, such as polypyrrole, polyaniline, and poly(3,4-ethylenedioxythiophene)-doped poly(styrenesulfonate) (PEDOT/PSS), have been often doped into a hydrogel network as conductive fillers to produce conductive hydrogels. , Among them, PEDOT/PSS displays unique advantages in preparing conductive hydrogels owing to its simple preparation, high electrical conductivity, and good water dispersibility. , The highly intrinsic conductive PEDOT/PSS polymer chain can not only provide good conductivity for the conductive hydrogels but also impart the conductive hydrogels with high strain-sensing performance . The PEDOT and PSS polymer chains carry positive and negative charges, respectively .…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Tough and Strain-Sensitive Organohydrogels Based on MXene and PEDOT/PSS and Their Effects on Mechanical Properties and Strain-Sensing Performance

Bi,

Qu,

Sheng

et al. 2024

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

Conductive hydrogels have shown promising application prospects in the field of flexible sensors, but they often suffer from poor mechanical properties, low sensitivity, and lack of frost resistance. Herein, we report a tough, highly sensitive, and antifreeze strain sensor assembled from a conductive organohydrogel composed of a dual-cross-linked polyacrylamide and poly(vinyl alcohol) (PVA) network, as well as MXene nanosheets as nanofillers and poly(3,4-ethylenedioxythiophene)doped poly(styrenesulfonate) (PEDOT/PSS) as the main conducting component (PPMP-OH organohydrogel). The tensile strength and toughness of PPMP-OH had been greatly enhanced by MXene nanosheets due to the mechanical reinforcement of MXene nanosheets, as well as various strong noncovalent interactions formed in the organohydrogels. The PPM 1 P-OH organohydrogels showed a tensile strength of 1.48 MPa at 772% and a toughness of 5.59 MJ/m 3 . Moreover, the conductivity and strain-sensing performance of PPMP-OH were significantly improved by PEDOT/PSS, which can form hydrogen bonds with PVA and electrostatic interactions with MXene. This was greatly beneficial for constructing a uniformly distributed and stable 3D conductive network and helped to obtain strain-dependent resistance of PPMP-OH. The strain sensors assembled from PPMP 1 -OH exhibited a high sensitivity of 5.16, a wide range of detectable strains up to 500%, and a short response time of 122 ms, which can effectively detect various physiological activities of the human body with high stability. In addition, the corresponding pressure sensor array also showed high sensitivity in identifying pressure magnitude and position.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Tough and Strain-Sensitive Organohydrogels Based on MXene and PEDOT/PSS and Their Effects on Mechanical Properties and Strain-Sensing Performance

Bi,

Qu,

Sheng

et al. 2024

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

show abstract

“…Wearable bioelectronics enable the change of the current reactive and disease-centric healthcare system to a personalized model with a focus on disease prevention and health promotion. − Sustainably driving them still remains highly desired and a great challenge. − Energy harvesting from the human body and its surrounding offers a promising solution to power wearable bioelectronics without the need for traditional batteries. − The human body can generate a continuous heat output of 40 mW cm –2 to maintain a stable body temperature, resulting in a temperature difference in a range of 5 to 40 K with the surrounding environment. − Thermoelectric materials and generators are widely adopted for body heat energy harvesting, which represents a compelling approach to provide a sustainable source for wearable bioelectronic devices. − …”

Section: Introductionmentioning

confidence: 99%

“…The performance of thermoelectric generators is characterized by the figure of merit ( ZT ), which is dependent on the intrinsic properties of materials such as the Seebeck coefficient ( S ), electrical conductivity (σ), and thermal conductivity (κ). − High S and σ and low κ are critical for enhancing ZT , but those three parameters are interrelated with tradeoffs and hence are difficult to manipulate simultaneously. , Relevant theories and practices reveal that the thermoelectric performance can be distinctly improved through low-dimensional and nanostructure strategies, such as carbon nanotubes (CNTs), modified graphene, transition-metal dichalcogenide nanosheets (such as MoS 2 , WS 2 ), etc. − The wide selection range of those materials usually has p-type characteristics with hole conduction. Furthermore, they are subjuect to the disadvantages of weak mechanical performance without stretchability .…”

Section: Introductionmentioning

confidence: 99%

Stretchable Thermoelectric Fibers with Three-Dimensional Interconnected Porous Network for Low-Grade Body Heat Energy Harvesting

Li,

Xia,

Xiao

et al. 2023

ACS Nano

Self Cite

View full text Add to dashboard Cite

Electricity generation from body heat has garnered significant interest as a sustainable power source for wearable bioelectronics. In this work, we report stretchable n-type thermoelectric fibers based on the hybrid of Ti 3 C 2 T x MXene nanoflakes and polyurethane (MP) through a wet-spinning process. The proposed fibers are designed with a 3D interconnected porous network to achieve satisfactory electrical conductivity (σ), thermal conductivity (κ), and stretchability simultaneously. We systematically optimize the thermoelectric and mechanical traits of the MP fibers and the MP-60 (with 60 wt % MXene content) exhibits a high σ of 1.25 × 10 3 S m −1 , an n-type Seebeck coefficient of −8.3 μV K −1 , and a notably low κ of 0.19 W m −1 K −1 . Additionally, the MP-60 fibers possess great stretchability and mechanical strength with a tensile strain of 434% and a breaking stress of 11.8 MPa. Toward practical application, a textile thermoelectric generator is constructed based on the MP-60 fibers and achieves a voltage of 3.6 mV with a temperature gradient between the body skin and ambient environment, highlighting the enormous potential of low-grade body heat energy harvesting.

show abstract

“…Among various energy harvesting approaches, hydrogel-based energy harvesters have emerged as a promising solution due to their unique properties, such as excellent flexibility, conformance to irregular surfaces, and biocompatibility [13,14]. Hydrogels, which are crosslinked networks of hydrophilic polymers, have been widely explored to achieve energy conversion through various mechanisms, including triboelectric nanogenerators (TENGs) [15,16], piezoelectric nanogenerators (PENGs) [17], and thermoelectric generators (TEGs) [18,19].…”

Section: Introductionmentioning

confidence: 99%

Hydrogel-Based Energy Harvesters and Self-Powered Sensors for Wearable Applications

Wang,

Li,

Zhang

et al. 2023

Nanoenergy Advances

View full text Add to dashboard Cite

Collecting ambient energy to power various wearable electronics is considered a prospective approach to addressing their energy consumption. Mechanical and thermal energies are abundantly available in the environment and can be efficiently converted into electricity based on different physical effects. Hydrogel-based energy harvesters have turned out to be a promising solution, owing to their unique properties including flexibility and biocompatibility. In this review, we provide a concise overview of the methods and achievements in hydrogel-based energy harvesters, including triboelectric nanogenerators, piezoelectric nanogenerators, and thermoelectric generators, demonstrating their applications in power generation, such as LED lighting and capacitor charging. Furthermore, we specifically focus on their applications in self-powered wearables, such as detecting human motion/respiration states, monitoring joint flexion, promoting wound healing, and recording temperature. In addition, we discuss the progress in the sensing applications of hydrogel-based self-powered electronics by hybridizing multiple energy conversion in the field of wearables. This review analyzes hydrogel-based energy harvesters and their applications in self-powered sensing for wearable devices, with the aim of stimulating ongoing advancements in the field of smart sensors and intelligent electronics.

show abstract

Tellurium-nanowire-doped thermoelectric hydrogel with high stretchability and seebeck coefficient for low-grade heat energy harvesting

Cited by 13 publications

References 51 publications

Tough and Strain-Sensitive Organohydrogels Based on MXene and PEDOT/PSS and Their Effects on Mechanical Properties and Strain-Sensing Performance

Tough and Strain-Sensitive Organohydrogels Based on MXene and PEDOT/PSS and Their Effects on Mechanical Properties and Strain-Sensing Performance

Stretchable Thermoelectric Fibers with Three-Dimensional Interconnected Porous Network for Low-Grade Body Heat Energy Harvesting

Hydrogel-Based Energy Harvesters and Self-Powered Sensors for Wearable Applications

Contact Info

Product

Resources

About