Materials Today Energy
·
2022
·
IF 9.257
Zhengshang Wang,Wen Cui,Hao Yuan,Xiaoli Kang,Zhou Zheng,Wenbin Qiu,Qiujun Hu,Jun Tang,Xudong Cui
Waste heat recovery systems built with thermoelectric (TE) materials offer promising means to generate electricity from waste heat directly, if TE materials or devices with controllable shapes are created through direct ink writing . However, the nature of TE inks used for direct ink writing must be modified with appropriate rheology to maintain stability and facilitate extrusion, as well as proper mechanical properties to resist deformation. Here, we report Bi 2 Te 3 -based inks modified with additives that allow direct printing of tunable architectures. The polyelectrolyte additives-induced adsorbed layers on the surface of TE particles are shown to significantly improve the stability and viscoelasticity of inks. Besides, the improved inks modified with methylcellulose additives exhibit an apparent enhancement of strength properties , thereby enabling the predesigned shapes to hold the successive layers printed above. Using charge control and framework reinforcement, the Bi 2 Te 3 -based inks print a series of architectures with porous structures, which largely reduce thermal conductivities . As a result, our three-dimensional-printed materials display high figures of merit ZT of 0.65 and 0.53 for p- and n-type. This work explores how additives can influence both rheological properties, printability, and microstructures, which pave the way to construct complex architectures and improve TE performance for structural and functional 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
Functional Materials Letters
·
2021
·
IF 2.17
Changxin Liu,Kaiyuan Zhao,Yuhang Fan,Yu Gao,Zhenghui Zhou,Mengze Li,Yunfei Gao,Zhitao Han,Minyi Xu,Xinxiang Pan
In recent years, with the development of the Internet of Things (IoT) and wearable technology, the research and exploration of thermoelectric materials have been greatly promoted. However, traditional thermoelectric materials are rigid and brittle. Thermoelectric devices made of these materials usually cannot be closely attached to the heat and cold sources that provide temperature differences, thus limiting the application of thermoelectric materials. Therefore, manufacturing new high-performance flexible thermoelectric devices is still a huge challenge. In this work, polyimide/copper (PI/Cu) substrate was deposited by electron deposition technology. The flexible thermoelectric thin film device was fabricated by bonding N -type and P -type bismuth telluride (Bi 2 Te 3 ) slurries onto the PI/Cu substrate. Then, the PDMS film was coated on the device to make the device waterproof and oxidation resistant. The output voltage and maximum power of this device, at the temperature of 80 K, reach 97.5 mV and 60 uW, respectively. After 200 cycles of cyclic bending experiments, 90% high conductivity retention can be maintained. It demonstrates that the new flexible thermoelectric thin film has good flexibility and excellent stability. This work provides a simple method for the preparation of flexible thermoelectric thin films and opens up a new way for its application in the sensing equipment and wearable device of the IoT.
研究领域:
材料科学
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物联网技术
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可穿戴设备
✓ 已验证
产品关联
DOI
高影响因子
Advanced Science
·
2025
·
IF 14.1
Liangshutong Zhang,Yupu Zhang,Xinyu Li,Donghao Han,Wei Zhai,Jianyuan Wang
The realization of fast, simple and efficient flight attitude recognition is crucial for flight safety and control stability, but still faces challenges in new materials and technologies. Herein, a chloroplast-like selenium-doped copper sulfide@black phosphorus (CSS@BP) composite material is prepared by ultrasonic chemical synthesis using BP nanosheets to effectively absorb light energy and disperse CSS layers to promote rapid photothermal conversion, which shows the temperature change more than ≈40 °C and an excellent photothermal conversion efficiency of 68.9% at 405 nm, corresponding to the theoretical calculation results. Moreover, the CSS@BP/Bi 2 Te 3 photothermoelectric conversion array prepared by pulsed laser deposition coated Bi 2 Te 3 thermoelectric layer and laminated porous insulating polyimide film can generate rapid thermal current changes through irradiated/non-irradiated thermal gradients. Hence, a portable attitude recognition box (ARB) is assembled with a based CSS@BP/Bi 2 Te 3 array with a self-balancing laser and a current measurement chip that enables accurate attitude recognition through the bidirectional current generated by changes of irradiated area. Excitably, the ARB demonstrates over 86.47% accuracy without complex algorithms, showing excellent stability and robustness. Thus, this work offers an innovative solution for advancing photothermal materials and low-cost high-precision flight attitude sensing technologies.
研究领域:
材料科学
·
航空工程
·
光电技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Nanomaterials
·
2023
·Vol. 13
·期 21
·2894
·
IF 5.3
Fang Zhou,Weichang Zhou,Yujing Zhao,Li Liu
Bi2Te3has been extensively used because of its excellent thermoelectric properties at room temperature. Here, 230–420 nm of Bi2Te3hexagonal nanosheets has been successfully synthesized via a “green” method by using ethylene glycol solution and applying polyvinyl pyrrolidone (PVP) as a surfactant. In addition, factors influencing morphological evolution are discussed in detail in this study. Among these parameters, the reaction temperature, molar mass of NaOH, different surfactants, and reaction duration are considered as the most essential. The results show that the existence of PVP is vital to the formation of a plate-like morphology. The reaction temperature and alkaline surroundings played essential roles in the formation of Bi2Te3single crystals. By spark plasma sintering, the Bi2Te3hexagonal nanosheets were hot pressed into solid-state samples. We also studied the transport properties of solid-state samples. The electrical conductivityσwas 18.5 × 103Sm−1to 28.69 × 103Sm−1, and the Seebeck coefficientSwas −90.4 to −113.3 µVK−1over a temperature range of 300–550 K. In conclusion, the observation above could serve as a catalyst for future exploration into photocatalysis, solar cells, nonlinear optics, thermoelectric generators, and ultraviolet selective photodetectors of Bi2Te3nanosheet-based photodetectors.
研究领域:
材料科学
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纳米技术
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能源科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF POWER SOURCES
·
2020
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IF 8.247
Xuan Zhao,Chuanshan Zhao,Yifei Jiang,Xingxiang Ji,Fangong Kong,Tong Lin,Hao Shao,Wenjia Han
Cellulose nanofiber (CNF) is obtained from cellulose resources (e.g., natural cellulose, bacterial cellulose, etc.) and is considered to be a low-cost, green and inexhaustible material. The impressive optical, mechanical, and thermal properties of this material have aroused great interest in fabricating of flexible electronic devices based on CNF. Hereby, the CNF/Bi 2 Te 3 thermoelectric composite films are fabricated using a facile vacuum filtration method. Subsequently, n-type and p-type films composed of this composite materials are used as legs to assemble thermoelectric generator (TEG) prototype. Besides, these composite films exhibit excellent mechanical flexibility and the electrical conductivity of the CNF/Bi 2 Te 3 film only decreases by 8% after 1000 bending cycles. And the contact angle of the polytetrafluoroethylene (PTFE) solution and alkylketene dimmer (AKD) emulsion co-treated film is as high as 150.7°, which has superhydrophobic properties. The TEG prototype consists of five p-n legs. At a temperature gradient of 60 K, the output voltage of the TEG prototype is 22.34 mV and the output power is 561 nW. This work not only proves the great potential of CNF application in flexible thermoelectric (TE) materials, but also promotes robust development of cellulose-based electronics.
研究领域:
材料科学
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能源技术
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柔性电子学
✓ 已验证
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2021
·
IF 5.316
Xiangqian Jiang,Chuncheng Ban,Ling Li,Han Li,Jiandong Hao,Weiping Chen,Xiaowei Liu
The Seebeck coefficient, electrical conductivity and thermal conductivity of thermoelectric materials are related but not independent, so it is difficult to improve the figure of merit value of thermoelectric materials. In the compound with nanometer grain size, a large number of surface interfaces and various defects in the material will increase the phonon scattering, resulting in the decrease of lattice thermal conductivity. Therefore, the nano-structure of the material is expected to increase its thermoelectric performance parameters. This work presents is based on the self-synthesized BN nano-materials, different structure of the thermoelectric cell composed of nanomaterial BN and thermoelectric material bismuth telluride are designed and analyzed, and its output voltage and power are simulated. Low dimensional BN nanomaterials with low thermal conductivity may contribute to reduce the overall thermal conductivity of the battery and improve the output efficiency. The thermoelectric coefficient of the thermoelectric battery is approximately calculated to be 1.22, which will satisfy the power supply requirements of some small power electronic equipment in practical application.
研究领域:
材料科学
·
能源技术
✓ 已验证
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2023
·Vol. 34
·期 7
·1-13
·
IF 2.8
Guo Yitong,Du Jingyang,Hu Meihua,Wei Bin,Su Taichao,Zhou Aiguo
In this paper, the thermoelectric (TE) performance of Bi 2 Te 3 was improved by the incorporation of Mo 2 C MXene, which is a novel two-dimensional material with moderate TE performance. The TE properties of Mo 2 C MXene were characterized from bulk samples bonded with 5 wt% Al sintered by spark plasma sintering (SPS) at 623 K for 6 min. Due to the very weak TE performance of Al, the performance of Mo 2 C MXene/Al composite reflects that of Mo 2 C MXene. It is an N-type conductor with the Seebeck coefficient of − 9.25 µV/K at 600 K. This is the first report to characterize the TE performance of Mo 2 C MXene bulk samples. Thereafter, Bi 2 Te 3 /Mo 2 C MXene composite powders were prepared from Mo 2 C MXene powers and precursors of Bi 2 Te 3 by hydrothermal method at 453 K for 24 h. The bulk samples of Bi 2 Te 3 incorporated with Mo 2 C MXene was obtained by SPS at 523 K for 7 min. The composites are N-type conductors. The electrical conductivity was remarkably increased with the content of Mo 2 C MXene, while the thermal conductivity slightly decreased. The sample with 5 vol% Mo 2 C MXene showed the optimal thermoelectric properties, and its ZT value was 0.26 at 473 K. At 450 K, the ZT value (~ 0.25) of that sample was 78.6% higher than that of Bi 2 Te 3 (~ 0.14). This is the first report on regulating TE performance by the incorporation of Mo 2 C MXene, a 2D material with intrinsic TE performance.
研究领域:
材料科学
·
热电材料
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
MOLECULAR PHARMACEUTICS
·
2020
·
IF 4.321
Yan Ma,Dong-Yang Zhang,Zhuo Peng,Shixia Guan,Junqiu Zhai
Combinational administration of photothermal therapy (PTT) and chemotherapy (CT) shows great potential in improving the efficiency of tumor treatment. Herein, we designed a novel nanocomposite Pt@Bi2Te3 composed of bismuth telluride (Bi2Te3) nanoparticles and platinum(IV) prodrugs (Pt) for PTT–CT combination therapy. The obtained Bi2Te3 was synthesized by a simple solvothermal method and modified by polyethylene glycol, which exhibited excellent photothermal (PT) efficiency and stability and could also serve as a bimodal bioimaging contrast agent in PT and photoacoustic (PA) imaging. In vitro experiment results showed that the nanocomposite Pt@Bi2Te3 could effectively increase the uptake of platinum in cancer cells, which could kill tumor cells through the combined effect of PTT and CT. Furthermore, combination therapy of cancer in vivo was achieved with obvious tumor-growth inhibition without inducing observed side effects. We revealed the great potential of Bi2Te3 nanocomposites in increasing therapeutic efficiency by PTT–CT therapy and PA–PT imaging.
研究领域:
肿瘤学
·
生物医学工程
·
材料科学
✓ 已验证
DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
·
2021
·
IF 9.229
Min Liu,Shuli Yin,Tianlun Ren,You Xu,Ziqiang Wang,Xiaonian Li,Liang Wang,Hongjing Wang
The design of Au-based materials with good dispersion and more active sites is critical to enhance the catalytic performance of electrochemical ammonia production. Herein, two-dimensional (2D) heterojunction Au-Bi2Te3 nanosheets (Au-Bi2Te3 NSs) are prepared by Au nanoparticles growing on Bi2Te3 nanosheets. Benefiting from the good dispersion of Au nanoparticles and the synergistic effect of the heterojunction composite, Au-Bi2Te3 NSs demonstrate excellent behavior for an ambient nitrogen reduction reaction (NRR). In a 0.1 M Na2SO4 electrolyte (N2-saturated), Au-Bi2Te3 NSs display a high NH3 yield rate of 32.73 μg h–1 mgcat.–1 and a faradic efficiency of 20.39% at −0.4 V. The proposed synthetic method provides a feasible strategy for designing high-performance heterojunction electrocatalysts for electrochemical ammonia synthesis.
研究领域:
材料科学
·
电化学
·
催化
✓ 已验证
产品关联
DOI
PubMed
高影响因子
MATERIALS & DESIGN
·
2023
·
IF 8.4
Chenchen Zhao,Dongbo Wang,Zhi Zeng,Bingke Zhang,Jingwen Pan,Donghao Liu,Sihang Liu,Shujie Jiao,Gang Liu,Zhikun Xu,Liancheng Zhao,Jinzhong Wang
Over-consumption of limited fossil fuels has caused serious environmental pollution and a global energy crisis, threatening human life and biodiversity. As an ideal, environmentally friendly renewable energy, hydrogen can satisfy human clean energy requirements. Therefore, whether hydrogen can be catalytically generated in the wastewater treatment process is a highly meaningful investigation. Herein, Bi 2 Te 3 /Te/C heterojunction nanowires with high specific surface area and rich pore structure were successfully synthesized. The efficient catalytic degradation process is accompanied by the generation of hydrogen. The catalytic degradation of methylene blue and methyl orange was achieved in less than 20 s and 150 s, respectively. Meanwhile, in scaled-up degradation/hydrogen production experiments, fast and efficient H 2 production from NaBH 4 can be realized in the presence of Bi 2 Te 3 /Te/C nanowires. The mechanism of efficient synergistic organic dye degradation and hydrogen production is due to the efficient carrier transfers and accumulation at the hetero-interface. In contrast to previous work, rapid degradation of organic dyes and hydrogen production by decomposition of NaBH 4 were achieved without the help of high-cost catalysts such as precious metals. This work could provide an alternative pathway for the future degradation of organic matter in synergistic heterogeneous catalytic wastewater and recovery of by-products including hydrogen.
研究领域:
环境科学
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催化化学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
Journal of Materials Chemistry A
·
2022
·Vol. 10
·期 24
·12921-12927
·
IF 14.511
Zhengshang Wang,Wen Cui,Hao Yuan,Xiaoli Kang,Zhou Zheng,Longqin Chen,Qiujun Hu,Wenbin Qiu,Jun Tang,Xudong Cui
Direct ink writing offers a unique solution for constructing shape-controllable devices. In this way, thermoelectric (TE) devices can optimize power generation from industrial waste heat by the design of structural parameters. Despite recent interest in the so-called all-inorganic inks with inorganic binders to engineer viscoelasticity, organic impurities may also be triggered by high portion of organic solvents, which hamper the electron and phonon transport. Herein, we report water-based inks to reduce organic residuals. The quasi-inorganic inks were synthesized by adding Bi2Te3-based particles to water solvent with a few organic binders, whose total organic content is less than that of all-inorganic inks. Moreover, an interface-solder approach is employed to fill the pores among grain particles with the liquefied phase. As a result, there is a tremendous enhancement of ZT values, reaching 0.71 and 0.59 for 3D-printed p- and n-type Bi2Te3-based TE materials, respectively. In particular, the flexible method promotes the realization of waste heat harvesting from an alumina pipe by fabricating a TE module integrated with printed half-annular legs. Our work demonstrates not only the effectiveness of quasi-inorganic inks and interface engineering as a means of increasing ZT values, but also the great potential of 3D-printed Bi2Te3-based TEGs for waste heat recovery.
研究领域:
材料科学
·
能源技术
✓ 已验证
DOI
高影响因子
Small
·
2025
·
IF 12.1
Wei Wu,Wen He,Duoduo Ling,Lei Chen,Yinze Zhang,Xiangqian Fan,Yanghao Bi,Dongbo Wang,Jinzhong Wang
Self-powered broadband photodetectors (SPBDs) have received widespread attention due to their significant applications in optical communication, remote sensing, and imaging. Vertical heterojunctions are promising for SPBDs due to their efficient photogenerated carrier separation and high integration density. However, certain band alignments at the interface can drive carriers to recombine that undermines the former advantage. Here, a SPBD based on the Bi 2 Te 3 /Sb 2 O 3 /p-Si vertical heterojunction is developed that introduces the Sb 2 O 3 as a carrier blocking layer and achieves improved self-powered photoresponse than Bi 2 Te 3 /p-Si. A one-step electron beam evaporation approach is adopted to deposit a narrow-bandgap optical-active layer Bi 2 Te 3 and a blocking layer Sb 2 O 3 on p-type Si substrates. Such photodetector exhibits detection performance across a broad response band of UV–vis–NIR (254–1050 nm). Owing to the built-in electric field within the heterojunction, the blocking effect and the photovoltaic effect induced by the Sb 2 O 3 layer, the detector achieves high responsivity (316.5 mA·W −1 ), detectivity (6.19 × 10 11 Jones) and fast rise and decay times (24.6/25.1 ms). Furthermore, the device exhibits excellent imaging capabilities for UV, visible, and near-infrared light patterns. The work presents a SPBD using Bi 2 Te 3 -based vertical heterostructure and proposes a novel and instructive performance-enhancing approach using a metal oxide layer based on carrier blocking layer engineering.
研究领域:
材料科学
·
光电子学
·
半导体物理
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）