CARBON
·
2023
·
IF 10.9
Xia Wang,Taifeng Shi,Chunlei Wan,Peng-an Zong,Zhenguo Liu,Wei Huang
Electromagnetic interference (EMI) shielding materials play a crucial role in safeguarding the reliable operation of electronic devices against electromagnetic waves (EW). Nevertheless, electronic devices inherently generate heat, and thermoelectric (TE) can convert heat into electricity, making them attractive as clean energy sources. Therefore, there is an increasing demand for high-performance EMI shielding materials with excellent TE properties. These materials can effectively mitigate EW pollution while simultaneously harnessing heat as electricity. Carbon cloth (CC) as one type of functional textile , has been widely explored as a potential material for EMI shielding, but rarely reported for TE application, due to low Seebeck coefficient . In this study, a facile electrodeposition method was employed to coat Bi 2 Te 3 layers onto the carbon fibers within carbon cloth. This innovative approach not only significantly improved the EMI shielding efficiency from 17.0 dB to an impressive 42.7 dB, but also imparted excellent TE performance to the film, as evidenced by a power factor of 42.4 μWm −1 K −2 . A four-legged TE module based on this film generates 35.5 nW of power at a temperature difference of 30 K, indicating its significant potential for powering low-consumption wearable electronics after integrating more TE legs. This study has paved the way for the development of a versatile material, that can mitigate EW pollution while simultaneously harnessing heat as electricity, by incorporating high TE performance inorganics into CC using a simple electrodeposition method.
研究领域:
材料科学
·
电磁屏蔽
·
热电学
·
纳米材料
·
能量收集
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DOI
高影响因子
JOURNAL OF WUHAN UNIVERSITY OF TECHNOLOGY-MATERIALS SCIENCE EDITION
·
2019
·Vol. 34
·期 4
·781-786
·
IF 0.605
Gao Peng,Chen Lilin,Wu Bo,Zhang Qiming,Xue Chao,Hou Chengyi,Sun Qiang
An optimal structure design of the lattice mismatched GaInP/GaInAs/Ge solar cell with high photoelectric conversion efficiency was proposed. Two-dimensional Bi 2 Te 3 and Sb 2 Te 3 nanosheets were prepared by solvothermal synthesis method used as thermoelectric (TE) functional materials, which is further hybrid with high conductive reduced graphene oxide (rGO) and carbon nanotubes (CNTs). TE film was then fabricated based on above materials. The power factor of the n -type TE film is 19.31 μW/mK 2 , and the power factor of the p -type TE film is 97.40 μW /mK 2 . The flexible TE device was integrated with flexible solar cell. Compared with the single photovoltaic (PV) cell, the efficiency of the as-prepared flexible integrated device measured under the AM1.5 illumination is significantly improved. The efficiency of the two parallel tests is increased from 27.26% and 26.59%, to 29.11% and 28.92%, respectively. The increasing ratio reaches 6.7%–8.8%.
研究领域:
可再生能源
·
材料科学
·
热电技术
·
光伏技术
·
纳米科技
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高影响因子
MOLECULES
·
2024
·Vol. 29
·期 22
·5242
·
IF 4.2
Chunlei Li,Shun Li,Long Zhao,Jianming Zhang
Harnessing waste heat from environmental or industrial sources presents a promising approach to eco-friendly and sustainable chemical synthesis. In this study, we introduce a thermoelectrocatalytic (TECatal) system capable of utilizing even small amounts of heat for hydrogen peroxide (H2O2) production. We developed a nanohybrid structure, combining carbon nanotubes (CNTs) and Bi2Te3nanoflakes (Bi2Te3/CNTs), through a one-pot synthesis method. Bi2Te3, as a thermoelectric (TE) material, generates charge carriers under a temperature gradient via the Seebeck effect, enabling them to participate in surface redox reactions. However, the rapid recombination of these charge carriers greatly limits the TECatal activity. In the Bi2Te3/CNTs nanohybrid system, the introduction of CNTs substantially enhances the efficiency of H2O2production, as the strong bonding between CNTs and Bi2Te3, along with the excellent conductivity of CNTs, facilitates charge carrier separation and transport, as confirmed by TE electrochemical tests. This study underscores the significant potential of thermoelectric nanomaterials for converting waste heat into green chemical synthesis.
研究领域:
材料科学
·
环境科学
·
化学工程
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DOI
PubMed
高影响因子
Research
·
2025
·
IF 10.7
Dengchen Li,Qiji Ma,Chengyou Lin,Chen-Ming Liang,Ling Huang,Yuhang Qi,Jianhua Li,Pei-Yan Zhao,Zhi-Ling Hou,Dongfeng Zhang,Guang-Sheng Wang
Low-frequency microwave absorption poses an important challenge due to the excessive thickness of absorbers, which inherently correlates with wavelength. Herein, Bi 2 Te 3 nanosheets were synthesized via a solvothermal method to achieve high permittivity, aiming to address the issue of low-frequency microwave absorption. The as-prepared nanosheets demonstrate a tunable ultra-high permittivity (up to 282) at 2 GHz, accompanied by a loss tangent below 0.81 and pronounced frequency dispersion characteristics. The nanosheet material demonstrates a synergistic balance of ultrahigh permittivity and appropriate dielectric loss, attributed to its surface-state-conducting and bulk-insulating character. At 2.4 GHz, the composite material composed of Bi 2 Te 3 nanosheet achieves an effective absorption with an electrical thickness of 0.032, which is significantly thinner than those reported for state-of-the-art microwave absorbing materials. By leveraging the high permittivity and pronounced frequency dispersion characteristics of Bi 2 Te 3 nanosheet composites, broadband microwave absorption is achieved across both 2- to 6-GHz and 6- to 18-GHz ranges through multilayered architectures. This work provides a strategic approach to overcome the longstanding challenge of broadband low-frequency microwave absorption.
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DOI
PubMed
高影响因子
JOURNAL OF SOLID STATE CHEMISTRY
·
2025
·
IF 3.5
Tingting Li,Jian Gao,Hengheng Wu,Wenlai Mu,Xudong Shi,Mingze Li,Zhidong Zhang,Zhenhua Wang
Magnetic element doping often significantly affects the surface states of topological insulators with broken time-reversal symmetry. Here, we systematically investigate the effects of magnetic rare-earth Dy doping on the structural and electronic properties of Bi 2 Te 3 polycrystalline films synthesized by chemical vapor deposition (CVD). The crystal structure of Bi 2 Te 3 phase can remain intact even when the Dy dopant concentration is as high as 18.9 at.%. Structural analysis reveals that Dy incorporation induces lattice distortions and defect formation, leading to significant disorder and suppressed bulk carrier density. Temperature-dependent resistivity measurements demonstrate a transition from metallic to semiconducting behavior upon Dy doping, indicating bulk carrier localization. Magnetoresistance studies highlight the emergence of weak antilocalization (WAL) at low magnetic fields and non-saturating linear magnetoresistance (LMR) at high fields, signifying the dominance of topological surface states in electronic transport. These findings provide key insights for engineering quantum coherent devices based on magnetic element doped topological insulators.
研究领域:
凝聚态物理
·
拓扑绝缘体
·
材料科学
·
量子输运
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高影响因子
CHINESE JOURNAL OF CHEMICAL PHYSICS
·
2025
·Vol. 38
·期 2
·240-248
·
IF 1
Wang Xinfeng,Wang Han,Wu Yiran,Lian Yulong,Liu Jinyang,Zhao Sangen
The heterostructures incorporated with two or more distinctive two-dimensional (2D) materials have attracted great attention because they could give rise to enhanced property in comparison with their individual counterparts. Here, a water-assisted twostep rapid physical vapor deposition (rPVD) method was explored and used to synthesize Bi 2 Te 3 -Sb 2 Te 3 lateral heterostructures (LHS) successfully. The Bi 2 Te 3 -Sb 2 Te 3 LHS is in nearly uniform size, and grows along three particular orientations with the intersection angles of 120°. Interestingly, we found that the water molecules play a significant role in determining the growth orientation, namely whether it will grow along the vertical or lateral direction in 2D structure. Hence, a growth mechanism of LHS based on the water-assisted two-step rPVD was present, which can be used as a general strategy and extended to the growth of other 2D heterostructures or homostructures, such as SnS-SnSe LHS and SnS-SnS lateral homostructures. Furthermore, the second-harmonic generation intensity of the Bi 2 Te 3 -Sb 2 Te 3 LHS is much stronger than that of the Bi 2 Te 3 /Sb 2 Te 3 vertical heterostructures (VHS). This work opens a new approach for the synthesis of water-assisted lateral 2D heterostructures or homostructures and offers a new method to enhance the second-harmonic generation properties of topological insulating materials.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Jinhao Xie,Suju Fan,Zhan Qu,John H. Xin
Flexible thermoelectric yarn based on inorganic particles and polymer layer • The Seebeck coefficient and power factor reached 127 μV K −1 and 34 μW m −1 K −2 • Continuous transferring heat into electricity in the vertical direction • TE device able to generate 10 μW m −2 when temperature difference is 8 K. Yarn based wearable thermoelectric (TE) generator which can transfer body heat into electricity, shows a potential application in driving flexible electronic devices. Although there are many TE materials that have been loaded on aramid yarn, achieving flexible 5inorganic material-based TE yarn is still a challenge. Here, a bismuth telluride (Bi 2 Te 3 ) and PEDOT:PSS (BTP) coated aramid yarn is fabricated by solution thermal and dip coating method. The thermoelectric properties can be improved by increasing reaction times. The highest Seebeck coefficient and power factor of BTP yarn reach up to 127 μV K −1 and 34 μW m −1 K −2 , respectively. The BTP yarn also shows good mechanical property and flexibility. By utilizing finite element analysis, the temperature distribution under different weather is simulated. According to the simulated result, strategies to enhance the output performance of TE device in different weather are proposed, including changing fabric color and thickness. For the application, four TE yarn units are connected in series and then embroidered into fabric. The TE device can output 10 μW m −2 when temperature difference is 8 K. This exploratory work of combining inorganic and organic TE material with the aramid yarn provides a new way to achieve high performance TE yarn. Download: Download high-res image (68KB) Download: Download full-size image
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高影响因子
ACS Applied Polymer Materials
·
2026
·
IF 5.2
Yang Yuteng,Ye Yanbo,Zhao Kexin,Xu Mingxuan,Song Haijun
Wearable
sensors serve as pivotal components in next-generation
healthcare monitoring and intelligent electronic systems, yet their
applications are limited by poor multifunctionality, signal interference,
unsatisfactory flexibility, and external power reliance. Herein, we
report an integrated temperature/pressure dual-mode sensor constructed
by incorporating Te–Bi 2 Te 3 /poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate)
(PEDOT:PSS) nanocomposite thermoelectric (TE) materials into a commercial
aerogel matrix. The proposed architecture synergistically couples
the TE and piezoresistive effects, enabling independent conversion
of thermal and mechanical stimuli into decoupled electrical outputs
(i.e., voltage and resistance signals, respectively). Notably, the
Te–Bi 2 Te 3 /PEDOT:PSS-based sensor exhibits
high-fidelity temperature-sensing performance, with a maximum Seebeck
coefficient of 95.46 μV·K –1 and a minimum
distinguishable temperature difference of 0.1 K. Meanwhile, the inherent
elasticity and hierarchical porous structure of the aerogel scaffold,
combined with the excellent electrical conductivity of the nanocomposite,
endow the sensor with outstanding pressure-sensing capability, allowing
reliable detection of both static and dynamic stimuli with robust
mechanical stability and excellent cycling durability. Furthermore,
the introduction of TE functionality enables self-powered operation
of the device, which can efficiently harvest low-grade thermal energy
from the temperature gradient between human skin and the ambient environment.
Collectively, these merits highlight the considerable application
potential of the proposed dual-mode sensor in advanced wearable electronics
and self-sustained sensing platforms.
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DOI
高影响因子
CERAMICS INTERNATIONAL
·
2024
·
IF 5.1
Jin Liu,Liexiang Ren,Jujie Luo,Ning Lv
In this study, bismuth telluride–based hybrids consisting of nanosheets were successfully prepared by disproportionation induced by microwave irradiation and applied on supercapacitor electrodes. Various analytical techniques were adopted to analyze the structure and composition of Bi 2 Te 3 /Bi 2 TeO 5 . The unique disproportionation (Te 0 →Te 2+ +Te 4+ ) results in an interlocking nanosheet, in which the lamellar interspersed structure on the lamella can be visualized through high-magnification scanning electron microscopy. The large layer spacing with the interspersed structure provides more storage sites for electrolyte ion interactions and allows for better stabilization of the electrode structure. Result of electrochemical studies indicates that Bi 2 Te 3 /Bi 2 TeO 5 enables a capacity of 860 F g −1 (1 A g −1 ) and maintains 74.5% of the initial capacity through 2000 charge/discharge cycles. The Bi 2 Te 3 /Bi 2 TeO 5 anode is integrated into an ultracapacitor to attain a remarkable energy density of 89 Wh kg −1 in 6 M KOH.
研究领域:
材料科学
·
电化学
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产品关联
DOI
高影响因子
Smart Materials and Structures
·
2023
·Vol. 32
·期 3
·035036
·
IF 4.1
Ding Ding,Qian Wu,Yinan Gao,Jinmei Wang,Yixun Chen,Qian Li
Fiber- and yarn-based thermoelectric materials play an essential role in the design of fabric-based flexible thermoelectric generators (FTEGs) which may overcome the wearable difficulties of existing film-based FTEGs. In this study, we used a robust coating method to produce high-performance thermoelectric yarns for wearable applications. An organic/inorganic hybrid coating agent composed of PEDOT:PSS, MWCNT, and Bi2Te3 was used to coat an alkali modified porous polyester yarn. The organic/inorganic hybrid material contributes to the improved thermoelectric properties. The porous modification of polyester yarns improves the wicking property of the fibers and enhances the adhesion stability between yarn substrate and the coating layer. A compromised optimal power factor of 12.3 μWm−1 K−2 could be achieved by 20 wt% Bi2Te3 loading. The corresponding electrical conductivity and Seebeck coefficient were 5526.8 S m−1 and 47.1 μV K−1 at room temperature respectively. A fabric thermoelectric generator with five yarn legs could generate an open circuit voltage of 2.95 mV at a temperature difference of 30 °C, demonstrating its potential application in wearable applications.
研究领域:
材料科学
·
纺织工程
·
能源技术
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DOI
高影响因子
Nanoscale Advances
·
2020
·Vol. 2
·期 3
·1333-1339
·
IF 0
Ye Zhang,Qi You,Weichun Huang,Lanping Hu,Jianfeng Ju,Yanqi Ge,Han Zhang
It is widely known that the excellent intrinsic electronic and optoelectronic advantages of bismuthene and tellurene make them attractive for applications in transistors and logic and optoelectronic devices. However, their poor optoelectronic performances, such as photocurrent density and photoresponsivity, under ambient conditions severely hinder their practical application. To satisfy the demand of high-performance optoelectronic devices and topological insulators, bismuth telluride nanoplates (Bi2Te3 NPs) with different sizes, successfully synthesized by a solvothermal approach have been, for the first time, employed to fabricate a working electrode for photoelectrochemical (PEC)-type photodetection. It is demonstrated that the as-prepared Bi2Te3 NP-based photodetectors exhibit remarkably improved photocurrent density, enhanced photoresponsivity, and faster response time and recovery time in the UV-Vis region, compared to bismuthene and tellurene-based photodetectors. Additionally, the PEC stability measurements show that Bi2Te3 NPs have a comparable long-term stability for on/off switching behaviour for the bismuthene and tellurene-based photodetectors. Therefore, it is anticipated that the present work can provide fundamental acknowledgement of the optoelectronic performance of a PEC-type Bi2Te3 NP-based photodetector, shedding light on new designs of high-performance topological insulator-based optoelectronic devices.
研究领域:
材料科学
·
光学工程
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DOI
PubMed
APPLIED SURFACE SCIENCE
·
2023
·
IF 6.7
Lisha Fan,Jiyong Tang,Ling Wu,Shuowen Zhang,Fan Liu,Jianhua Yao,Lianbo Guo
Bismuth telluride, (Bi 2 Te 3 ), is of great scientific and technical importance due to its excellent thermoelectric performance near room temperature. However, deposition of Bi 2 Te 3 thin films suffers from composition deviation due to preferential loss of Te at a high-temperature deposition environment. We demonstrated a fast and efficient laser annealing method to synthesize high-quality stoichiometric Bi 2 Te 3 thin films at room temperature from Te/Bi stacking films. The production rate of Bi 2 Te 3 was around 180 times higher than conventional thermal annealing. The formation of Bi 2 Te 3 thin films was studied with respect to annealing laser energy density . Bi 2 Te 3 thin films with an Bi:Te atomic ratio of 2:3 were achieved at an annealing laser energy density of 6.6 mJ/cm 2 . The structural, chemical, and thermoelectric performance of laser-annealed films were compared with conventional thermally annealed films. The Seebeck coefficient of laser-annealed films reached −167 µV/K, which was1.3 higher than that of thermally annealed films, evidencing the superiority of the laser annealing method in producing high quality Bi 2 Te 3 stochiometric films. Rapid growth of stoichiometric Bi 2 Te 3 thin films by laser annealing holds great promise for the development of high-performance thermoelectric devices.
研究领域:
材料科学
·
物理学
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高影响因子
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