Fiber Surface/Interfacial Engineering on Wearable Electronics

Xiao, Ruimin; Yu, Guanlong; Xu, Ben Bin; Wang, Nan; Liu, Xuqing

doi:10.1002/smll.202102903

Cited by 24 publications

(22 citation statements)

References 228 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As discussed, conductive fibers fabricated through careful selection of material composition and fabrication technology are highly conductive, flexible and durable [113]. Therefore, they are very suitable for being used as electrodes and current collectors for fiber-based wearable electronics that demand simultaneous achievements of electronic functions and robust mechanical properties [114].…”

Section: Applications Of Conductive Fibers In Wearable Electronicsmentioning

confidence: 99%

Advanced Fiber Materials for Wearable Electronics

et al. 2022

View full text Add to dashboard Cite

Fiber materials are highly desirable for wearable electronics that are expected to be flexible and stretchable. Compared with rigid and planar electronic devices, fiber-based wearable electronics provide significant advantages in terms of flexibility, stretchability and breathability, and they are considered as the pioneers in the new generation of soft wearables. The convergence of textile science, electronic engineering and nanotechnology has made it feasible to build electronic functions on fibers and maintain them during wear. Over the last few years, fiber-shaped wearable electronics with desired designability and integration features have been intensively explored and developed. As an indispensable part and cornerstone of flexible wearable devices, fibers are of great significance. Herein, the research progress of advanced fiber materials is reviewed, which mainly includes various material preparations, fabrication technologies and representative studies on different wearable applications. Finally, key challenges and future directions of fiber materials and wearable electronics are examined along with an analysis of possible solutions. Graphical abstract

show abstract

Section: Applications Of Conductive Fibers In Wearable Electronicsmentioning

confidence: 99%

Advanced Fiber Materials for Wearable Electronics

et al. 2022

View full text Add to dashboard Cite

show abstract

“…Because of the confinement effect of surfactants covering onto the ZIF-8, with a dramatic increment of active site density, the core-shell structure can be formed, in addition to atomically dispersed M-N-C electrocatalysts. [14,16,19,52,70,71] Through the core-shell confinement strategy, four different types of surfactants (CTAB, SDS, polyvinyl pyrrolidone (PVP), and F127) were introduced onto the Co-doped ZIF precursors surface and followed by pyrolysis to prepare atomically dispersed Co-N-C electrocatalysts (Figure 6a), during which the surfactants were carbonized to graphitized carbon shells. This study Reproduced with permission.…”

Section: Core-shell Confinementmentioning

confidence: 99%

“…Because of the confinement effect of surfactants covering onto the ZIF‐8, with a dramatic increment of active site density, the core–shell structure can be formed, in addition to atomically dispersed M–N–C electrocatalysts. [ 14,16,19,52,70,71 ]…”

Section: Synthetic Strategiesmentioning

confidence: 99%

Recent Advances in ZIF‐Derived Atomic Metal–N–C Electrocatalysts for Oxygen Reduction Reaction: Synthetic Strategies, Active Centers, and Stabilities

Chen

Yan

et al. 2022

Small

View full text Add to dashboard Cite

oxidation reaction on the anode, while the oxygen undergoes a reduction reaction on the cathode. However, the sluggish kinetics and instability of oxygen reduction reaction (ORR) electrocatalysts, especially in the practical acidic and oxidation environments, have severely hindered their further developments. Therefore, engineering ORR electrocatalysts with high activity and good stability is desired to promote energy transformation efficiency. By far, the most popular ORR electrocatalysts are the costly platinum group metal (PGM)-derived ones. However, the use of expensive, unsatisfied stability, and scarce PGM materials as ORR electrocatalyst limits the developments of this field. [8][9][10][11][12][13][14][15][16][17][18] To improve catalytic efficiency and cut the high expenditure, various strategies have been studied in recent years. Among them, electrocatalysts based on the metal-N-C (M-N-C) structures have attracted extensive attention in recent years due to their unique electronic structure to bind with the intermediates, abundant substitutional metal elements, maximum atomic utilization efficiency, as well as excellent stability. [19][20][21][22][23][24][25] Besides, compared to ORR electrocatalysts loaded with nanoclusters or nanoparticles, the M-N-C presents unambiguous catalytic sites and facile synthesis, which help the understanding of ORR mechanisms by precise theoretical calculations and in Exploring highly active, stable electrocatalysts with earth-abundant metal centers for the oxygen reduction reaction (ORR) is essential for sustainable energy conversion. Due to the high cost and scarcity of platinum, it is a general trend to develop metal-N-C (M-N-C) electrocatalysts, especially those prepared from the zeolite imidazolate framework (ZIF) to replace/minimize usage of noble metals in ORR electrocatalysis for their amazingly high catalytic efficiency, great stability, and readily-tuned electronic structure. In this review, the most pivotal advances in mechanisms leading to declined catalytic performance, synthetic strategies, and design principles in engineering ZIF-derived M-N-C for efficient ORR catalysis, are presented. Notably, this review focuses on how to improve intrinsic ORR activity, such as M-N x -C y coordination structures, doping metal-free heteroatoms in M-N-C, dual/ multi-metal sites, hydrogen passivation, and edge-hosted M-N x . Meanwhile, how to increase active sites density, including formation of M-N complex, spatial confinement effects, and porous structure design, are discussed. Thereafter, challenges and future perspectives of M-N-C are also proposed. The authors believe this instructive review will provide experimental and theoretical guidance for designing future, highly active ORR electrocatalysts, and facilitate their applications in diverse ORR-related energy technologies.

show abstract

“…However, the triboelectric charge density of the material can be changed by adjusting the functional groups on the surface with different electron-withdrawing or electron-donating abilities. Considering that the charge density on polymer surface is closely related to the surface chemical property, surface chemical engineering treatments through appropriate functionalizations, including overall chemical reaction, surface chemical treatment, functional group grafting, and so on, are one of the most fundamental strategies to improve the output performances of TENGs [56,96,97]. For example, the surface charge of polymers can be controlled by carrying their physicochemical properties, such as the strength of macromolecular interactions and surface adhesion.…”

Section: Surface Functionalizationmentioning

confidence: 99%

Smart Textile Triboelectric Nanogenerators: Prospective Strategies for Improving Electricity Output Performance

Dong

Xiao

Cheng

et al. 2022

Nanoenergy Advances

View full text Add to dashboard Cite

By seamlessly integrating the wearing comfortability of textiles with the biomechanical energy harvesting function of a triboelectric nanogenerator (TENG), an emerging and advanced intelligent textile, i.e., smart textile TENG, is developed with remarkable abilities of autonomous power supply and self-powered sensing, which has great development prospects in the next-generation human-oriented wearable electronics. However, due to inadequate interface contact, insufficient electrification of materials, unavoidable air breakdown effect, output capacitance feature, and special textile structure, there are still several bottlenecks in the road towards the practical application of textile TENGs, including low output, high impedance, low integration, poor working durability, and so on. In this review, on the basis of mastering the existing theory of electricity generation mechanism of TENGs, some prospective strategies for improving the mechanical-to-electrical conversion performance of textile TENGs are systematically summarized and comprehensively discussed, including surface/interface physical treatments, atomic-scale chemical modification, structural optimization design, work environmental control, and integrated energy management. The advantages and disadvantages of each approach in output enhancement are further compared at the end of this review. It is hoped that this review can not only provide useful guidance for the research of textile TENGs to select optimization methods but also accelerate their large-scale practical process.

show abstract

Fiber Surface/Interfacial Engineering on Wearable Electronics

Cited by 24 publications

References 228 publications

Advanced Fiber Materials for Wearable Electronics

Advanced Fiber Materials for Wearable Electronics

Recent Advances in ZIF‐Derived Atomic Metal–N–C Electrocatalysts for Oxygen Reduction Reaction: Synthetic Strategies, Active Centers, and Stabilities

Smart Textile Triboelectric Nanogenerators: Prospective Strategies for Improving Electricity Output Performance

Contact Info

Product

Resources

About