CELLULOSE
·
2019
·Vol. 26
·期 12
·7569-7579
·
IF 3.917
Sadi Md. Shak,Pan Junjie,Xu Anchang,Cheng Deshan,Cai Guangming,Wang Xin
Simple and facile fabrication techniques to load conductive components onto textiles for wearable applications are highly demanded. In this work, highly conductive cotton fabrics were fabricated by dip-coating of single-walled carbon nanotubes (CNTs) after polydopamine (PDA) templating. The coated fabrics were characterized by scanning electron microscopy, X-ray photoelectron spectroscopy and energy dispersive X-ray spectrum. The introduction of PDA enhanced the adhesion between fiber surface and the loaded CNTs, resulting in a conductivity of 41.5 Ω/sq for the coated fabrics. The CNT-PDA-cotton fabric showed great durability against repeated mechanical deformation (bending, folding) or multiple washing cycles. The excellent strain sensing performance of the coated fabrics granted them the application potential in real-time monitoring of different human motions such as speaking, drinking, walking, bending of finger and knee etc. Furthermore, the composite fabrics showed outstanding electric heating performance with a rise in the surface temperature to about 120 °C within 20 s at 6 V. The fabrication of CNT-PDA-cotton composite fabrics provides a novel and simple way of developing textile-based wearable electronics and heaters.
研究领域:
材料科学
·
纺织工程
·
电子工程
✓ 已验证
DOI
高影响因子
Journal of Materials Chemistry A
·
2021
·Vol. 9
·期 46
·25982-25998
·
IF 12.732
Yingying He,Peiying Xie,Shuai Li,Yanan Wang,Daogui Liao,Hongxia Liu,Li Zhou,Yunhua Chen
Rational design of the microstructure of a multifunctional electromagnetic wave absorber is a greatly promising route to establish convenient performance regulation and to satisfy complex application conditions. In this work, the proposed material for the absorber is a compressible carbonated reduced graphene oxide/Fe3O4 (C-rGO/Fe3O4) carbon foam with hollow microspheres and a concave–convex microstructure. Its unique porous structure can strengthen the multiple reflections of electromagnetic waves and improve the system's mechanical properties. The C-rGO/Fe3O4 carbon foam possesses excellent comprehensive electromagnetic wave absorption performance (reflection loss (RL) value of −57.50 dB and effective bandwidth of 6.72 GHz) and exhibits convenient RL value regulation (when varying compressive strains). The RL value of the carbon foam can be adjusted within the absorption range of RL ≤ −20 dB or switched between ≤−20 dB and RL ≤ −10 dB, exhibiting a smart function-tunable or function-switchable feature. Moreover, the compressible carbon foam also exhibits excellent fatigue durability and can be used to monitor human physiological signals. This provides a promising platform for practical applications in adjustable electromagnetic wave absorption; the material can also be used for wearable electronics.
研究领域:
材料科学
·
电子工程
✓ 已验证
产品关联
DOI
高影响因子
Nature Communications
·
2025
·Vol. 16
·期 1
·1-13
·
IF 15.7
Xu Qiuchen,Tang Shanshan,Li Nachuan,Wang Yan,Zhao Xiaoju,Zhang Xiao,Geng Shitao,Yuan Bin,Wang Shuo,Ouyang Zhaofeng,Liao Meng,Ma Linlin,Shang Ming,Sun Yifan,Peng Huisheng,Sun Hao
Rechargeable sodium-chlorine (Na-Cl 2 ) batteries show great promise in grid energy storage applications due to their high electrochemical performance. However, the use of highly corrosive thionyl chloride (SOCl 2 )-based electrolytes has severely hindered their real-world applications. Here we show a non-corrosive ester (methyl dichloroacetate) as a promising alternative to SOCl 2 , which can form a non-corrosive electrolyte with aluminum chloride and sodium bis(fluorosulfonyl)imide for high-performance rechargeable Na-Cl 2 batteries. The resultant battery shows a reversible capacity of up to 1200 mAh g −1 at a current density of 100 mA g −1 calculated based on the mass of carbon with a discharge voltage of ~2.5 V, a wide temperature range from −40 to 80 °C, and long-term cycling stability of 700 cycles at −40 °C, which outperforms conventional rechargeable Na-Cl 2 batteries and state-of-the-art Na metal batteries. The electrochemical performance and safety have been further extended to fibre batteries, which realize wearable applications of rechargeable Na-Cl 2 batteries. Based on donor number and charge transfer as two key descriptors, we further propose the design principle of organic electrolytes for rechargeable Na-Cl 2 batteries, which can fully unlock the designability and sustainability of organic solvents towards practical Na-Cl 2 batteries.
研究领域:
材料科学
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电化学
·
能源存储
✓ 已验证
产品关联
DOI
PubMed
高影响因子
POLYMERS FOR ADVANCED TECHNOLOGIES
·
2021
·Vol. 33
·期 1
·96-103
·
IF 3.665
Meng Wang,Lin Mu,Hao Zhang,Suqian Ma,Yunhong Liang,Lei Ren
The flexible stretchable sensors have great potential for implementation in various applications, such as intelligent soft robots, health monitoring, and motion detection. However, most of the flexible stretchable sensors with microstructures and high sensitivities are fabricated by expensive templates and complex processes. In consideration of large-scale fabrication, a low cost and efficient way is in great demand. Herein, electroless plating on Nafion films with decent swelling ratios are proposed to fabricate stretchable sensors with wrinkle-structured electrodes. By adding isopropanol (IPA) to the electroless plating process, the H 2 O-IPA sensor with larger swelling ratio shows deeper surface wrinkles, higher surface roughness, and better sensitivity to strain. At the same time, the H 2 O-IPA sensor exhibit good durability (500 cycles). By mounting the sensor on the joint of human finger, the motion of the finger bending and even the bending degree can be accurately detected, indicating the potential use in the field of wearable devices and soft electronic skins.
研究领域:
材料科学
·
生物医学工程
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产品关联
DOI
高影响因子
LANGMUIR
·
2025
·
IF 3.9
Jijun Ding,Pengfei Zhao,Haixia Chen
Flexible pressure sensors have broad prospects in smart wearables, healthcare, and human-computer interaction. Nevertheless, flexible pressure sensors still face numerous thorny challenges. It has become a crucial problem to skillfully design and successfully achieve flexible pressure sensors with both a high sensing range and ultrahigh sensitivity. The sensor is designed and realized with inspiration drawn from the layered microstructure of human skin, and hierarchical structure flexible pressure sensors are fabricated, where PDMS microstructures/MWCNTs act as the top electrode, filter paper/ZnO nanostructures/MWCNTs act as the intermediate active layer, and an Ag interdigitated electrode acts as the bottom electrode. The sensing performance of the sensor is investigated to develop the application of pressure sensors for human health detection in daily life, and a pressure sensor array is prepared to investigate the detection of spatial pressure distribution. Sensors based on paper and PDMS can achieve low-pressure detection (30 Pa), high sensitivity (261.38 kPa–1), fast response time (∼73.8 ms), and excellent cyclic stability (10 000 cycles). Finally, the sensor demonstrates its functionality by lighting up a small lamp, which confirms that the as-prepared pressure sensor has excellent application scenarios and is beneficial for the development of flexible electronic devices.
研究领域:
材料科学
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生物医学工程
·
传感器技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
COMPOSITES COMMUNICATIONS
·
2021
·
IF 6.617
Tingting Sun,Sibo Chen,Hongfei Sun,Jiahao Li,Xin Wu,Lulu Jin,Lianjun Wang,Wan Jiang
Promoting the feasibility of thermoelectric (TE) devices toward wearable power generator application has sparked extensive interest for next-generation electronics. However, the lack of air-stable and high-performance n-type TE materials , which lag far behind those of p-type TE materials, and the deficiency of reasonable device structure design have always restricted the development of wearable thermoelectrics. Herein, we prepare a high-performance and air-stable n-type carbon nanotube fiber (CNTF) by multistep treatment and design a three-dimensional (3D) wavy-structured TE device to address the mentioned challenges. The multistep treatment including oleylamine (OA) doping followed by annealing process (250 °C) can contribute to an enhanced Seebeck coefficient of ~ −80 μV K −1 and an increased power factor of ~545 μW m −1 K −2 . Notably, it is found that the n-type CNTF prepared by this multistep treatment shows good air stability, which effectively diminishes the malignant effects of conventional annealing process on the air stability. Based on the optimized TE performance of an alternately p/n doped CNTF, the prepared wavy-structured generator integrated with two p-n couples can sustainably yield a stable amplitude of ~1.3 mV in voltage response during multiple fingering cycles and output a maximum power of ~8 nW under a temperature difference of ~5.7 K when the top of the device comes into contact with fingers. This paper provides a new insight into developing high-performance/air-stable n-type carbon nanotubes (CNTs) materials and designing reasonable device structure toward wearable applications.
研究领域:
材料科学
·
能源技术
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2025
·
IF 9.7
Zhiling Luo,Hongyu Huang,Zhipeng Wu,Jiaqi Liu,Xuhui Ye,Huamin Chen,Luzhuo Chen
Energy storage textiles represent an innovative form of flexible energy storage devices, fully leveraging the wearing advantages of textiles and demonstrating unique benefits in wearable electronics. However, due to the inherent porous and insulating characteristics of textiles, textiles electrodes suffer from intricate preparation process and unsatisfying performance. Additionally, the electrolytes face challenges such as evaporation loss and leakage. To address these issues, this work presents an innovative strategy for fabricating energy storage garments based on the interfacial crosslinking of hydrogel electrolyte. Garments and electrodes were first assembled with polyvinyl alcohol (PVA) solution. The energy storage textiles are prepared by constructing textile/hydrogel/electrode interfaces during the freezing-thawing crosslinking process with enhanced strength. This strategy avoids the complex step of fabricating textile electrodes. Additionally, the hydrogel is hygroscopic and can replenish moisture from the air, enabling the long-term operation of devices without encapsulation. Importantly, this strategy is versatile and compatible with various textiles and available electrodes. A variety of supercapacitors (SCs) have been successfully integrated into commercial garments, including large-sized devices (5 × 5 cm 2 , 11.8 F) for wearable applications. This innovative strategy is expected to provide new insights for the development of energy storage textiles.
研究领域:
材料科学
·
能源技术
·
纺织工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Advanced Materials Interfaces
·
2022
·Vol. 9
·期 5
·2101977
·
IF 6.389
Zijiao Guo,Zan Lu,Yue Li,Wei Liu
With the continuous demands for wearable electronics, the embeddable power sources have drawn attention to develop advanced electrode materials and feasible manufacture procedures. Fiber-based flexible energy storage devices have the potential to be practically integrated by utilizing the high-performance materials with precisely constructed structures. Herein, a novel approach is presented to achieve an outstanding fiber-based supercapacitor by simultaneous wet-spinning of mesoporous MXene (Ti 3 C 2 T x ) nanoflakes. The volumetric capacitance of the porous fiber is enhanced up to ≈145% when the content of mesoporous MXene reaches 15 wt%. The symmetric all-solid-state fiber supercapacitor shows an extraordinary capability of 821.5 F cm –3 at a current density of 0.5 A cm –3 , which reflects an enormous improvement to that of a nonporous MXene fiber-based supercapacitor. The measured energy density is 8.9 mWh cm –3 at a power density of 401 mW cm –3 , which also indicates the effective synergy of the constructed pathways for ions and electrons. This work demonstrates the feasibility of scalable production of fiber-based electrode materials with porous MXene for powering wearable applications.
研究领域:
材料科学
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能源存储
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2023
·
IF 8.4
Zhenming Wang,Lanxiu Ni,Xiaobo Zhang,Liang Feng
To alleviate the lack of sensors on the Internet of Things (IoT), a novel flexible substrate-free sensing membrane has been put forward, of which the fabrication is simple, low-cost and has potential of large-scale production via a vacuum filtration method. After alkaline hydrolysis , paper fibers were covered with reduced graphene oxide (rGO) and further functionalized with a layer of polyaniline (PANI) by in-situ polymerization. The rGO functionalized fiber (GF) played a competent role as the embedded conductive network, efficiently transferring the charge signal from the surface sensing layer. Eventually, the functionalized fibers were re-filmed under a 0.1 MPa negative pressure by vacuum filtration method. The surface area of the film was about 23.76 cm 2 and 1 × 1 cm 2 square was cut for the following test. The sensing membrane based on PANI covered rGO functionalized fiber (PGF) has shown superb sensing performance to NH 3 , with excellent stability, selectivity and sensitivity at room temperature . The linear response range of sensor based on PGF was 25 ppm, the correlation coefficient was 0.9908 and the limit of detection (LOD) was 34 ppb. The response to NH 3 was ∼14% while the responses of other testified interfering gases were all below 0.5%. Most importantly, the sensing membrane has exhibited an excellent capability of resisting bending, and maintained the response to 10 ppm NH 3 (13.55–14.3%) even after 1200 bends, indicating that the sensor has a bright prospect of future wearable applications.
研究领域:
材料科学
·
传感器技术
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产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2021
·
IF 13.273
Peng Song,Chunyan Xi,S. Premlatha,Xiaoping Shen,Zhenyuan Ji,Zhenyu Yan,Aihua Yuan,Lirong Kong,Guoxing Zhu
Fiber-shaped supercapacitors (FSSCs) have attracted increasing attention for wearable electronics. Herein, an asymmetrical fiber-shaped supercapacitor, AFSSCs-ICS, with an innovative encapsulated core-sheath architecture has been successfully constructed for the first time. The sword-scabbard inspired AFSSCs-ICS was fabricated by simply inserting a ‘sword’ positive electrode, PPy-MWCNTs-silk, into one tubular graphene ‘scabbard’ negative electrode with H 2 SO 4 /PVA gel as electrolyte. Notably, our newly designed PPy-MWCNTs-silk electrode had an ultrahigh length specific capacitance of 15.3 mF cm −1 (corresponding to high areal or volumetric capacitance of 676.9 mF cm −2 or 376.3 F cm −3 ), representing one of the highest levels among the fabric yarn derived electrodes, while the hollow graphene tube depicted a superior linear capacitance of 19.1 mF cm −1 , which could match well with that of the PPy-MWCNTs-silk electrode. Benefiting from the innovative yet rational structure, and ideally balanced charges, the AFSSCs-ICS had an extended operating potential of 1.6 V, and an outstanding length specific capacitance of 2.3 mF cm −1 with a very admirable energy density of 0.8 μWh cm −1 , dramatically surpassing numerous reported FSSCs. Moreover, the AFSSCs-ICS device also afforded superb electrochemical and mechanical stabilities with retentions of 81% after 3000 charging-discharging cycles and 95–105% under bending degrees from 0 to 150°. This study may pave a new way for constructing coaxial fiber-shaped energy source unit for next-generation wearable and portable miniaturized electronics.
研究领域:
材料科学
·
能源存储
·
纳米技术
·
柔性电子
✓ 已验证
DOI
高影响因子
ACS Applied Nano Materials
·
2023
·
IF 5.9
Yifan Zhi,Jia Xu,Jianlei He,Jiahan Xu,Huanxia Zhang
Graphene is a promising reinforcement for fiber composite materials in flexible wearable applications because of its exceptional conductivity. Researchers have focused on bridging the gap between the intrinsic conductivity of graphene and the macroscopic performance of composite materials. The anisotropy of 2D nanomaterials indicates that their orientation and distribution are crucial factors in determining the macroscopic performance of thin films and bulk materials. Various technologies developed to control the formation of microstructures include electric and magnetic field methods, hot pressing, centrifugation, and freeze-drying. In this study, we prepared flexible graphene/cellulose composite film materials and used magnetic fields to regulate the orientation and distribution of graphene within cellulose paper. Results show that the grid structure of graphene arranged on the composite material produced interconnected conductive paths and reduced the graphene permeation threshold. By giving the conductive layer a higher dielectric constant, we prevented its breakdown as a conductive film. Electroluminescent devices were constructed using graphene/cellulose flexible composite materials and achieved an effective improvement in luminescence performance. Furthermore, directional luminescence was obtained through a microstructure design. This study provides a feasible path for using 2D nanomaterials in high-performance, flexible wearable devices.
研究领域:
材料科学
·
纳米技术
·
电气工程
·
复合材料
✓ 已验证
产品关联
DOI
高影响因子
Nano-Micro Letters
·
2022
·Vol. 14
·期 1
·1-15
·
IF 23.655
Peng Peng,Zhou Jiaqian,Liang Lirong,Huang Xuan,Lv Haicai,Liu Zhuoxin,Chen Guangming
The design of power supply systems for wearable applications requires both flexibility and durability. Thermoelectrochemical cells (TECs) with large Seebeck coefficient can efficiently convert low-grade heat into electricity, thus having attracted considerable attention in recent years. Utilizing hydrogel electrolyte essentially addresses the electrolyte leakage and complicated packaging issues existing in conventional liquid-based TECs, which well satisfies the need for flexibility. Whereas, the concern of mechanical robustness to ensure stable energy output remains yet to be addressed. Herein, a flexible quasi-solid-state TEC is proposed based on the rational design of a hydrogel electrolyte, of which the thermogalvanic effect and mechanical robustness are simultaneously regulated via the multivalent ions of a redox couple. The introduced redox ions not only endow the hydrogel with excellent heat-to-electricity conversion capability, but also act as ionic crosslinks to afford a dual-crosslinked structure, resulting in reversible bonds for effective energy dissipation. The optimized TEC exhibits a high Seebeck coefficient of 1.43 mV K −1 and a significantly improved fracture toughness of 3555 J m −2 , thereby can maintain a stable thermoelectrochemical performance against various harsh mechanical stimuli. This study reveals the high potential of the quasi-solid-state TEC as a flexible and durable energy supply system for wearable applications.
研究领域:
材料科学
·
能源技术
·
可穿戴设备
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）