ChemistrySelect
·
2025
·Vol. 10
·期 29
·e02906
·
IF 2
Haojun Zhang,Gengrui Zhao,Shaoting Ma,Bin Zhang
Graphical A novel method enhances triboelectric nanogenerator (TENG) output by using La-doped bismuth ferrite nanoparticles as the triboelectric layer filler. Under the filler concentration threshold, the output performance of the TENG with 1.5 wt% La-doped BFO fillers is significantly enhanced compared to that with undoped BFO fillers. Additionally, a self-powered anticorrosion system is developed using this TENG as the energy source. Incorporating high-permittivity nanoparticles as fillers into triboelectric layers is an effective strategy to enhance the output performance of triboelectric nanogenerators (TENG). However, exceeding the critical filler concentration threshold causes nanoparticle aggregation, limiting further output performance enhancement of TENG. Here, a novel approach is proposed to enhance TENG output performance by doping lanthanum (La) into bismuth ferrite (BFO), forming La-doped BFO nanoparticle fillers (BLFO) to further improve the output performance of polyvinylidene fluoride (PVDF)-based TENG without increasing filler concentration. This approach overcomes the limitation of nanoparticle aggregation at high filler loadings while significantly enhancing the output performance of TENG. Below the critical concentration threshold, the dielectric constant of BLFO/PVDF composites increases by 32% compared to undoped BFO/PVDF composites. Consequently, the BLFO/PVDF-based TENG achieves a high output voltage of 329 V and short circuit current of 44 µA, representing 43% and 69% increases over the BFO/PVDF-based TENG, respectively. Notably, these values represent 219% and 193% increases compared to the pure PVDF-based TENG. Furthermore, a self-powered anticorrosion system powered by the BLFO/PVDF TENG demonstrates effective metal protection, as evidenced by open-circuit potential measurements and reduced average corrosion rates.
研究领域:
能量收集
·
材料科学
·
纳米技术
·
电化学
·
防腐保护
✓ 已验证
产品关联
DOI
高影响因子
Materials Today
·
2025
·
IF 22
Xuan Ye,Ruipeng Zhang,Yahui Zhao,Shuai Wen,Tongtong Li,Zhaorui Zhang,Hongyun Qiu,Shaobo Ji
Thermoelectric (TE) materials have been extensively used in self-powered temperature sensing devices, especially flexible sensors that require low energy consumption. One of their important features is the flexibility that allows conformal contact with various subjects and tolerance to mechanical deformation. However, realizing both high TE conversion efficiency and excellent flexibility remains a significant challenge. Here, a general method was developed to produce stretchable high-performance TE composites and achieved asymmetric composite thermoelectric materials (ACTE) with high Seebeck coefficient (215 μV·K −1 for n-type, 175 μV·K −1 for p-type). The fully stretchable temperature sensors (FSTS) fabricated from ACTE exhibited good flexibility which could withstand 50 % uniaxial tensile strain and 30 % biaxial strain with low thicknesses (∼650 μm) that allowed for good contact on curved surfaces. The sensitivity of FSTS reached ∼145 μV·K −1 with 18 n/p ACTE pairs and ∼37 μV·K −1 with 2 pairs and could output stable signals regardless of flexural or tensile deformation. The FSTS was also fabricated into an array that could be worn as sensors or electronic skin with temperature sensing and mapping abilities. This work not only produced fully stretchable TE devices but also provided a general method for the fabrication of other high-performance stretchable composites and devices.
研究领域:
生物医学工程
·
柔性电子学
·
热电转换技术
✓ 已验证
产品关联
DOI
高影响因子
Nano Energy
·
2022
·
IF 19.069
Yunfeng Chen,Hao Lei,Zhenqiu Gao,Jingya Liu,Fangjia Zhang,Zhen Wen,Xuhui Sun
Mimicking multiple perceptions of human skin is a basic requirement for artificial intelligence electronic skin (e-skin) perception. Despite significant advances in e-skin for multifunctional sensing, achieving self-powered and truly distinguishing between different stimulus signals still remain challenges. Here, we developed a flexible self-powered temperature-pressure dual functional e-skin (STPES) based on the coupling triboelectric and thermoelectric effects. It can effectively convert temperature and pressure stimuli into two independent voltage signals without signal interference. In addition, the temperature sensing process is powered by natural temperature gradient , with the resolution of 0.5 K and the sensitivity of 220 µV K −1 . The self-powered pressure sensor based on triboelectric effect can detect the pressure over a wide range (1 Pa-100 kPa) with the maximum sensitivity of 1.394 V kPa −1 . The dual-parameter e-skin attached to the robotic arm is demonstrated to detect the weight and temperature of water cup simultaneously. This work provides a promising prototype for passive multi-parameters e-skin, which has great potential for application in wearable health monitoring systems and artificial intelligence perception.
研究领域:
生物医学工程
·
人工智能
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING SCIENCE
·
2023
·
IF 4.7
Xingzi Lan,Xin Chen,Yuli Luo,Xiangjie Lai,Yiliang Bao,Xinyu Chen,Yurong Liu,Hehui Zheng,Han Wang,Yadong Tang
Respiration, as a basic human physiological process, can be used as a vital indicator for early disease diagnosis. Moreover, the prevention of respiratory diseases caused by particulate matter and bacteria is of great importance. Herein, a smart face mask with self-powered real-time respiratory monitoring, efficient filtration and excellent antibacterial activity was fabricated by electrospinning. By applying polyvinylidene fluoride (PVDF)/ε-poly (L-lysine)(ε-PL) and poly (ε-caprolactone)(PCL)/gelatin nanofibrous membranes as contact electrification pairs, the triboelectric nanogenerator assembled into a face mask could detect different breathing frequencies and intensities without external power supply. The electrical output performance was increased with the increment of PVDF concentration and the introduction of gelatin. Efficient filtration of particulate matter was achieved under a low pressure drop. Furthermore, PVDF/ε-PL nanofibrous membrane also exhibited excellent antibacterial activity, thus reducing the risk of respiratory infection. The prepared smart face mask is hopeful for personal healthcare management and prevention of respiratory diseases.
研究领域:
生物医学工程
·
材料科学
·
呼吸系统健康
✓ 已验证
产品关联
DOI
高影响因子
ACS Sensors
·
2024
·
IF 8.2
Yun Chen,Yunfan Jia,Xingwang Zhu,Li Xu,Henan Li,Huaming Li
Norovirus (NoV) stands as a significant causative agent of nonbacterial acute gastroenteritis on a global scale, presenting a substantial threat to public health. Hence, the development of simple and rapid analytical techniques for NoV detection holds great importance in preventing and controlling the outbreak of the epidemic. In this work, a self-powered photoelectrochemical (PEC) immunosensor of NoV capsid protein (VP1) was proposed by the π-electron-rich carbon nitride homojunction (ER-CNH) as the photoanode. C4N2 ring derived from π-rich locust bean gum was introduced into the tri-s-triazine structure, creating a large π-delocalized conjugated carbon nitride homojunction. This strategy enhances the C/N atomic ratio, which widens light utilization, narrows the bandgap, and optimizes the electronic band structure of carbon nitride. By introduction of a π-rich conjugated structure, p-type domains were induced within n-type domains to build the internal electric field at the interface, thus forming a p–n homojunction to boost carrier separation and transfer. The ER-CNH photoanode exhibited excellent photoelectric performance and water oxidation capacity. Since VP1 inhibits the water oxidation of the ER-CNH photoanode, the open-circuit potential of the as-prepared PEC immunosensor system was reduced for detecting NoV VP1. The self-powered PEC immunosensor achieved a remarkably low detection limit (∼5 fg mL–1) and displayed high stability and applicability for actual stool samples. This research serves as a foundation concept for constructing immunosensors to detect other viruses and promotes the application of self-powered systems for life safety.
研究领域:
生物医学工程
·
分析化学
·
公共卫生
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Applied Materials Today
·
2020
·
IF 8.352
Hui Qiao,Zhongjun Li,Zongyu Huang,Xiaohui Ren,Jianlong Kang,Meng Qiu,Yundan Liu,Xiang Qi,Jianxin Zhong,Han Zhang
Abstact Two-dimensional (2D) materials exhibit outstanding performance and good application prospects in the field of photodetectors due to their excellent optical and electronic properties. However, weak light absorption capacity the rapid recombination of photogenerated electron-hole pairs is still a serious obstacle that limits their light detection performance. Black phosphorus (BP) can act as a hole acceptor due to its excellent hole mobility, which can induce the rapid transfer of photogenerated holes, and the heterojunction at the interface promotes the injection of photogenerated electrons onto the surface of MoS 2 , thereby effectively promoting the separation of photogenerated electron-hole pairs. In addition, recent reports indicate that quantum dots (QDs) have excellent local photon capture capabilities due to their quantum confinement and surface effects, which are considered to be excellent light absorbers that enhance the performance of photodetectors in 2D materials. Here, we prepared black phosphorus QDs-molybdenum disulfide (BP QDs-MoS 2 ) heterojunction and constructed a photo-electrochemical-type (PEC-type) photodetector based on the heterojunction. Experimental results show that the BP QDs-MoS 2 heterojunction-based PEC-type photodetector exhibits significantly enhanced photo-response performance. Meanwhile, the PEC-type photodetector also exhibits self-powered photo-response behavior, good photoresponse performance and stability in a liquid environmentand. This work strongly proves that BP QDs are used as hole acceptors to promote the separation of photogenerated electron-hole pairs is an effective means.
研究领域:
材料科学
·
光电子学
✓ 已验证
产品关联
DOI
高影响因子
ACS Sensors
·
2025
·
IF 9.1
Kai Dong,Yihan Zhang,Xiaoxuan Fan,Leo N. Y. Cao,Xiao Peng
Underwater ultrasonic detection is critical for marine security, playing a vital role in resource development, environmental protection, and national defense. However, existing detection systems, which primarily rely on active scanning technologies, are hindered by high costs, significant energy demands, and challenges in achieving large-scale deployment. Here, we introduce a microfiber-based triboelectric acoustic sensor (MTAS) featuring a core–shell hierarchical structure, offering a self-powered solution for precise measurement of underwater ultrasound source distance. By leveraging the principles of contact electrification/triboelectrification and electrostatic induction, the MTAS efficiently converts complex ultrasonic vibrations into real-time electrical signals. The MTAS demonstrates rapid response times as low as 8.6 μs, a high signal-to-noise ratio of 29.8 dB, and the capability to detect ultrasonic sources with power levels above 1.6 W via time-difference-of-arrival analysis. To address large-scale sea applications, we further propose a distributed network that integrates multiple MTAS units capable of precise ultrasonic source localization and real-time motion trajectory visualization. This innovation represents a transformative approach, combining self-powered operation, ease of deployment, and high imperceptibility, paving the way for large-area, energy-efficient submarine security systems. Such advancements redefine the paradigm of underwater target detection, aligning technological innovation with the pressing demands of marine safety and environmental sustainability.
研究领域:
海洋技术
·
传感器技术
·
能源技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Science Advances
·
2021
·Vol. 7
·期 22
·
IF 14.143
Lijing Zheng,Miaomiao Zhu,Baohu Wu,Zhaoling Li,Shengtong Sun,Peiyi Wu
Highly conductive and stretchy fibers are crucial components for smart fabrics and wearable electronics. However, most of the existing fiber conductors are strain sensitive with deteriorated conductance upon stretching, and thus, a compromised strategy via introducing merely geometric distortion of conductive path is often used for stable conductance. Here, we report a coaxial wet-spinning process for continuously fabricating intrinsically stretchable, highly conductive yet conductance-stable, liquid metal sheath-core microfibers. The microfiber can be stretched up to 1170%, and upon fully activating the conductive path, a very high conductivity of 4.35 × 104 S/m and resistance change of only 4% at 200% strain are realized, arising from both stretch-induced channel opening and stretching out of tortuous serpentine conductive path of the percolating liquid metal network. Moreover, the microfibers can be easily woven into an everyday glove or fabric, acting as excellent joule heaters, electrothermochromic displays, and self-powered wearable sensors to monitor human activities.
研究领域:
材料科学
·
柔性电子
·
纺织工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Materials Chemistry C
·
2022
·Vol. 10
·期 6
·2049-2059
·
IF 8.067
Cuicui Ling,Bingxin Feng,Xiaomeng Wang,Lingtan Zhang,Tuo Zhang,Min Cao,Daoyong Yu,Xin Xue,Qingzhong Xue,Jianqiang Zhang,Chuanke Wang,Lei Zhu,Haipeng Lu,Wenpeng Liu
Self-powered photodetectors with excellent figures-of-merit, fast response speed, and broadband detection capability have drawn tremendous research interest. However, it is still challenging to develop excellent light-absorbing materials as photodetectors with effective separation of carriers. In this paper, we develop a SnO2 nano litchi shell structure/n-Si heterojunction with enhanced broadband light absorption for self-powered photodetection. The advantageous photoresponse performance of the SnO2 nano litchi shell structure/n-Si heterojunction is attributed to the following factors: (1) the SnO2 nano litchi shell structure has a large specific surface area to trap light; (2) the spherical cavity structure increases the light utilization rate by scattering and multiple reflections; (3) the significant Fermi energy difference at the junction of the SnO2 layer and Si layer. As a result, the device exhibits a broadband detection capacity from ultraviolet (365 nm) to near-infrared (980 nm) at 0 voltage. Under 900 nm (10 μW cm−2), the photodetector shows the responsivity of 0.033 A W−1, the photosensitivity of 8.35 × 108 cm2 W−1, the detectivity of 2.94 × 1012 Jones, the response time of 20.8 μs, and the recovery time of 285 μs. We also evaluated the near-infrared low signal imaging and fluorescence detection capability of the device. We expect that the SnO2 nano litchi shell structure/n-Si heterojunction photodetector will have great potential in biomedical and environmental monitoring, and military reconnaissance.
研究领域:
材料科学
·
光电技术
✓ 已验证
产品关联
DOI
高影响因子
Nano-Micro Letters
·
2022
·Vol. 14
·期 1
·1-13
·
IF 23.655
Zhao Jun,Wang Di,Zhang Fan,Pan Jinshan,Claesson Per,Larsson Roland,Shi Yijun
The as-designed triboelectric nanogenerator (TENG) generates an excellent electric output, which is an order of magnitude higher than that of TENGs made from commercial dielectric materials.
The as-designed TENG-based sensor can detect worn debris in oils at least down to 0.01 wt% and water contamination down to 100 ppm, which are much better than other online monitoring methods (particle > 0.1 wt%; water > 1000 ppm).
A high-selective monitoring system is successfully developed for distinguishing water contamination from the multi-mixed contaminants in lubricating oils.
研究领域:
材料科学
·
能源技术
·
传感器技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Nano Energy
·
2020
·
IF 16.602
Ludong Li,Fan Zhang,Shuai Ye,Xiao Peng,Zhenhua Sun,Jiarong Lian,Liwei Liu,Junle Qu,Jun Song
Metal halide perovskites are widely studied in photodetection applications due to their outstanding optical and electrical properties. However, it is still a challenge to develop self-powered perovskite photodetectors with all the characteristics of high photoresponse performance, broad spectral response range, and excellent long-term stability. Herein, we demonstrate the high-performance self-powered photodetectors based on optimized Cs x DMA 1-x PbI 3 (0.7 < x < 1) perovskite films. By adjusting the solution concentration and molar ratio of CsI/DMAPbI 3 in the perovskite precursor, the dark current of devices was decreased significantly by three orders of magnitude and the light current of devices was improved at the same time. Systematic investigations have revealed that the improvement of device performance originates from the reduced bandgap, decreased trap density and increased film thickness of the optimized perovskite films. The optimal self-powered photodetectors display broad spectral response range (300–750 nm), high specific detectivity (>1 × 10 13 Jones), fast response, and excellent long-term stability. These intriguing results indicate that Cs x DMA 1-x PbI 3 perovskite films have tremendous application potential in future self-powered photoelectrical detection technology.
研究领域:
材料科学
·
光电器件
✓ 已验证
DOI
高影响因子
Materials Today Physics
·
2021
·
IF 9.298
Y. Zhang,Y. Xu,L. Gao,X. Liu,Y. Fu,C. Ma,Y. Ge,R. Cao,X. Zhang,O.A. Al-Hartomy,S. Wageh,A. Al-Ghamdi,H. Algarni,Z. Shi,H. Zhang
0D Bismuth nanoparticles (Bi NPs) are grown on the surface of 2D few-layer Nb 2 CT x MXene to form the mixed-dimensional Nb 2 CT x @Bi Schottky heterojunction . The large surface to volume area characteristic of 2D Nb 2 CT x nanosheets can provide the sufficient sites for the growth of Bi NPs, which can not only prevent the aggregation of Bi NPs, but also effectively shorten the length and transmission time of charge transfer. The Schottky heterojunction generated at the interface could lead to the uniflow spreading process of electrons/holes, promotes the separation of photo-induced electron/hole pairs, and suppress the carrier recombination dynamics, thus leading to the enhanced performance of Nb 2 CT x @Bi-based optoelectronic devices. Systematic investigations demonstrate that Nb 2 CT x @Bi-based flexible photoelectrochemical (PEC)-type photodetector shows self-powered photodetection capability with fast response/recovery time (0.08/0.08 s), a photocurrent of 1.56 μA cm −2 , a responsivity of 585.25 μA W −1 , and a specific detectivity of 4.63 × 10 12 Jones. The photodetector exhibits self-powered capability after bending 180° for 1000 cycles. Additionally, the repeatable and reproducible ON/OFF signals can be detected after placing the photodetector in alkaline electrolyte for one month, suggesting the potential of Nb 2 CT x @Bi Schottky heterojunctions for practical applications in flexible optoelectronics.
研究领域:
材料科学
·
光电子学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）