JOURNAL OF ALLOYS AND COMPOUNDS
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2022
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IF 6.371
Shaoping Chen,Yachao Wang,Yaning Wang,Wenhao Fan,Jingyun Guo,Jie Chen,Yu Jiang,Rasha Abdullah Ahmed Al-Yusufi,Zuhair A. Munir
In addition to the thermal and electrical characteristics of the thermoelectric material , the energy conversion efficiency of TE devices is influenced by other factors including the interface resistance, which in turn is affected by chemical changes or mechanical failure. We have investigated the use of FeTe as an electrode for iodine-doped PbTe. The telluride of iron has CTE and work function values that match well with those of PbTe. The FeTe/PbTe contact was determined as ohmic in nature with low resistance. Contact resistance and shear strength values were determined over aging times of up to 400 h at 573 K and were found to be nearly unchanged. In contrast, samples in which Fe was used as electrode showed significant decrease in shear strength and a significant increase in joint resistivity over the same aging conditions. From the electrical and thermal characterization, the conversion efficiency of the FeTe/Pb 1.0004 Te 0.997 I 0.003 /FeTe single leg was determined as 4.678% for T h = 673 K and T c = 300 K.
研究领域:
材料科学
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物理学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE
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2022
·Vol. 57
·期 8
·5167-5176
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IF 4.682
Wang Xiaojuan,Chen Xiaoting,Hou Ruiting,Zhang Qian
FeTe/reduced graphene oxide (RGO) nanocomposites have been synthesized using hydrothermal method followed by anneal process. The structure and morphology of FeTe/RGO nanocomposites were characterized by X-ray diffraction, scanning electron microscope, transmission electron microscopy, and X-ray photoelectron spectroscopy. For Na-ion batteries anode, the FeTe/RGO electrode exhibits stable cyclability with a reversible capacity of 360 mAh g −1 after 100 cycles at 100 mA g −1 and good rate capability. For K-ion batteries anode, the FeTe/RGO electrode also exhibits a reversible capacity of 320 mAh g −1 after 100 cycles at 100 mA g −1 and good rate capability. The good electrochemical performance of the FeTe/RGO electrode is ascribed to its unique structure, which can accommodate volume variation of FeTe and enhance the electronic conductivity. The synthesis approach in this work is facile, cost-effective, which can be potentially used to fabricate other metal tellurides/RGO composites as well. Considering the excellent electrochemical properties of FeTe/RGO, it is suggested that the FeTe/RGO is favorable for the potential applications in electrochemical device.
研究领域:
材料科学
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电化学
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纳米科技
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能源存储
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无机化学
✓ 已验证
DOI
高影响因子
CRYSTAL GROWTH & DESIGN
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2024
·
IF 3.2
Qian Liu,Bojian Zhou,Jiageng Liu,Shaolong Jiang
Two-dimensional (2D) tetragonal FeTe is expected to show attractive properties in different fields. However, the synthesis of high-quality 2D tetragonal FeTe via a facile approach remains challenging. Herein, we propose a facile chemical vapor deposition (CVD) strategy to realize the preparation of ultrathin tetragonal FeTe flakes on a Au foil substrate. The tetragonal FeTe flakes are as thin as 3.9 nm and have a high crystalline quality. The as-grown 2D tetragonal FeTe is shown to be a wonderful hydrogen evolution reaction (HER) catalyst with good activity and stability. This research injects new vitality into synthesizing 2D tetragonal FeTe for electrocatalytic HER applications.
研究领域:
材料科学
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电化学
·
纳米技术
✓ 已验证
DOI
高影响因子
Small
·
2024
·
IF 13
Chunxiao Li,Yuying Feng,Jiahui Jiang,Ting Zhao,Guancheng Xu,Li Zhang
Transition metal-based tellurides (TMTs) with excellent electrical conductivity are expected to be ideal electrocatalysts for overall water splitting. However, compared to transition metal sulfides and selenides, the reported applications of TMTs in overall water splitting are fewer. Herein, the NiTe/FeTe/Fe 3 O 4 /FF carnation flower-like with a semi-coherent interface is successfully constructed to enhance the electrochemical overall water splitting performance. Specifically, it achieves low overpotentials of 54 and 176 mV at 10 mA cm −2 for the hydrogen evolution reaction (HER) and the oxygen evolution reaction (OER), respectively. What's more, the electrolyzer requires a cell voltage of 1.5 V to sustain a current density of 10 mA cm −2 and maintains remarkable stability for an extensive duration of 450 h even at a current density of 100 mA cm −2 . Semi-coherent interface engineering and vacancy engineering not only improve the OH⁻ adsorption capacity of catalysts but also promote the desorption of adsorbed hydrogen (H ads ). In situ Raman spectroscopy reveals that FeOOH and NiOOH formed by NiTe/FeTe/Fe 3 O 4 /FF during the OER are the genuine active sites. This study provides a promising approach for the electrochemical water splitting of TMTs by combining semi-coherent interface engineering and vacancy engineering.
研究领域:
材料科学
·
电催化
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Sustainable Chemistry & Engineering
·
2019
·
IF 6.97
Minlin Mao,Jiang Deng,Tingting Yan,Junjie Shen,Jianping Zhang,Liyi Shi,Dengsong Zhang
During the design and construction of an efficient iron–nitrogen–carbon (Fe–N–C) electrocatalyst, it was difficult to avoid the formation of iron oxides along with the hierarchical carbon frameworks containing dispersed FeNx sites. As a result, a slow oxygen reduction reaction (ORR) occurred, making it difficult to improve the electrocatalytic property. Herein, we have successfully synthesized the Fe, N-doped hierarchically porous carbon architectures from FeTe-trapped ZIF-8 coated with polydopamine by heat treatment. During the pyrolysis process, the evaporation of tellurium could inhibit the formation of iron oxides, promote the formation of more FeNx active species, and facilitate the formation of mesoporous structure to accelerate mass transfer and increase the approachability of active species. The resulting Fe, N-doped porous carbon architectures possessed excellent ORR catalytic performance, and the half-wave potential was 10 mV more than that of the precious Pt/C catalysts. Besides, the obtained catalysts present a superb methanol tolerance and long-term durability compared to precious Pt/C catalysts in alkaline media. This work opens up new avenues for the construction of the uniformly dispersed FeNx sites catalysts for ORR.
研究领域:
材料科学
·
电化学
✓ 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）