International Journal of Minerals Metallurgy and Materials
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2022
·Vol. 29
·期 4
·896-904
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IF 3.85
Zhang Xuefeng,Jiao Shuqiang
Metal aluminum batteries (MABs) are considered potential large-scale energy storage devices because of their high energy density, resource abundance, low cost, safety, and environmental friendliness. Given their high electrical conductivity, high theoretical specific capacity, and high discharge potential, Te is considered a potential positive electrode material for MABs. Nonetheless, the critical issues induced by the chemical and electrochemical dissolution of tellurium and subsequent chemical precipitation on bare Al negative electrodes result in poor cycle stability and low discharge capacity of Al—Te batteries. Here an efficient TiB 2 -based modified layer has been proposed to address bare Al electrodes (Al/TB). Consequently, the low-voltage hysteresis and long cycle life of the Al/TB negative electrode have been achieved. In addition, the electrochemical performance of the Al—Te battery based on the Al/TB negative electrode is dramatically improved. Furthermore, the modified separator technology is introduced to match with the as-designed Al/TB negative electrode. Therefore, the record-setting long-term cycle stability of up to 500 cycles has been achieved in the Al—Te battery. The facile strategy also opens a potential route for other high-energy density battery systems, such as Al—S and Al—Se batteries.
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
ACS Applied Materials & Interfaces
·
2023
·
IF 9.5
Zhili Li,Jiye Zhang,Pengfei Luo,Jiayi Chen,Bowen Huang,Yuzhe Sun,Jun Luo
Silver chalcogenides demonstrate great potential as flexible thermoelectric materials due to their excellent ductility and tunable electrical and thermal transport properties. In this work, we report that the amorphous/crystalline phase ratio and thermoelectric properties of the Ag2SxTe1–x (x = 0.55–0.75) samples can be modified by altering the S content. The room-temperature power factor of the Ag2S0.55Te0.45 sample is 4.9 μW cm–1 K–2, and a higher power factor can be achieved by decreasing the carrier concentration as predicted by the single parabolic band model. The addition of a small amount of excessive Te into Ag2S0.55Te0.45 (Ag2S0.55Te0.45+y) not only enhances the power factor by decreasing the carrier concentration but also reduces the total thermal conductivity due to decreased electronic thermal conductivity. Owing to the effectively optimized carrier concentration, the thermoelectric power factor and dimensionless figure of merit zT of the sample with y = 0.007 reaches, respectively, 6.2 μW cm–1 K–2 and 0.39, while the excellent plastic deformability is well maintained, demonstrating its promising potential as a flexible thermoelectric material at room temperature.
研究领域:
材料科学
·
热电学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF LUMINESCENCE
·
2025
·
IF 3.6
Mingjun Zhao,Chongyun Shao,Weichang Li,Danping Chen,Wei Chen
A strong near-infrared (NIR) fluorescent borate glass doped with tellurium (Te) clusters was developed, and spectral properties were studied. Under an oxidizing atmosphere, Te clusters could not be formed; however, under a reducing atmosphere, broadband Te-cluster NIR emission covering 600–1400 nm was successfully achieved, with a peak centered at 900 nm and a full width at half maximum (FWHM) of 270 nm. The findings demonstrated that adjusting the glass composition and TeO 2 doping concentration can significantly enhance the NIR emission of Te-doped borate glass. Furthermore, the study revealed that the photoluminescence performance of this material is highly sensitive to both temperature and excitation wavelength, demonstrating its potential for tunable luminescent properties. A NIR glass-converted LED (gc-LED) device was fabricated by integrating Te-cluster-doped borate glass with a commercial 460 nm LED, demonstrating its potential applications in night vision, non-destructive testing, and biomedical imaging. This research provides a theoretical foundation and technical pathway for developing novel ultra-broadband NIR emission glass materials .
研究领域:
材料科学
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光学材料
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光子学
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固态照明
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近红外技术
✓ 已验证
产品关联
DOI
高影响因子
CHEMISTRY OF MATERIALS
·
2020
·
IF 9.567
Feng Li,Xue Zhang,Shuxian Hu,Zhaoyue Lv,Jigang Lv,Wenting Yu,Xihan Xu,Dayong Yang
Inspired by natural lives, materials with switchable mechanical properties have been constructed by virtue of the development of dynamic chemistry. However, the limited dynamic reactions are hampering their further development. The progress in organotellurium chemistry brings opportunity to open new frontiers of dynamic reactions for fabrication of mechanically responsive materials. Herein, a bioinspired mechanically responsive hydrogel upon redox mediated by dynamic coordination between telluroether and platinum ions is reported. The low electronegativity and superior σ electron-donating capability of telluroether facilitate its coordination with Pt ions. Remarkably, the coordination interaction is highly redox-active. Telluroether can dissociate from Pt ions upon oxidation (e.g., H2O2) because the effect of the polar solvent dramatically reduces the thermodynamic activity of oxidized telluroether. In turn, the coordination interaction is easily regenerated via reduction (e.g., vitamin C) of oxidized telluroether. When the coordination system is introduced into the polymer network of a hydrogel via copolymerization of telluroether containing a monomer and N-hydroxyethylacrylamide, the hydrogel exhibits a switchable and regulatable microporous structure and mechanical strength upon redox stimuli by virtue of the dynamic coordination interaction between telluroether and Pt ions. This work provides a new set of dynamic coordination chemistry and a new strategy to prepare mechanically responsive hydrogel.
研究领域:
材料科学
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化学
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生物材料
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2025
·
IF 9.7
Shufan He,Tao Jiang,Chengwei Ye,Wenzhong Wang,Shaochun Tang
The development of low-cost and high-activity electrocatalysts is crucial for clean energy production and sustainable development. In particular, non-noble-metal-based medium-entropy materials (MEMs) have recently attracted considerable attention because of their excellent electrocatalytic performance and have become a new research hotspot in the field of electrocatalysis. Additionally, the fewer main elements allow MEMs to be easily recycled and synthesized, with potential industrial applications. Inspired by these advantages, spindle-shaped (Fe 2 CoNi)Te 2 medium-entropy metal telluride (METe) nanostructures were prepared via in situ Te doping during thermal treatment of metal–organic frameworks (MOFs). The resulting spindle-shaped (Fe 2 CoNi)Te 2 METe prepared with an optimal ratio of Fe 2 CoNi-MOF and the tellurium powder exhibits excellent electrocatalytic activity and stability for the hydrogen evolution reaction (HER) and oxygen evolution reaction (OER), achieving low overpotentials of 155 and 263 mV at 10 mA cm −2 for the HER and OER, respectively, and outstanding stability in 60 h tests. Density functional theory calculations demonstrate that the enhanced performance of the medium-entropy (Fe 2 CoNi)Te 2 METe nanostructures is attributed to a significant increase in the surface charge density, a substantial increase in the *H adsorption/desorption ability and a remarkable reduction in the Gibbs free energy of the rate-determining step due to the d-band center being closer to the Fermi level. This study provides a feasible strategy for achieving efficient and low-cost electrocatalysts.
研究领域:
材料科学
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能源科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Energy Storage Materials
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2018
·
IF 0
Haomiao Li,Kangli Wang,Hao Zhou,Xiaolin Guo,Shijie Cheng,Kai Jiang
Developing high energy density batteries is of great significance for various energy storage applications . The novel liquid metal batteries (LMBs), with the merits of low-cost and long-lifespan, however deliver relatively low specific energy due to the electromotive force (EMF) limitation of bimetallic electrodes. Metalloid tellurium (Te) is a potentially high voltage electrode candidate for LMB, but challenged by its poor electronic conductivity and high solubility in molten salts. Herein, for the first time, we demonstrate a high voltage LMB with high energy density enabled by metalloid Te alloying with metallic Sn as positive electrode . This Te-Sn alloying strategy dramatically enhances the electronic conductivity of Te based electrodes, and suppresses the solubility of Te in molten salt electrolyte as well. The Li||Te-Sn cells reported herein present the highest discharge voltage of ca.1.6 V and energy density of 495 Wh kg −1 among all the reported LMBs. These preliminary results broaden the selection of positive electrode materials for LMBs and demonstrate a strategy for developing high energy density batteries for energy storage applications.
研究领域:
能源存储
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材料科学
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产品关联
DOI
Physica Status Solidi-Rapid Research Letters
·
2022
·Vol. 17
·期 4
·2200484
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IF 3.277
Chenyu Yao,Libo Zhang,Yulu Chen,Cheng Guo,Liu Yang,Yang Lu,Kai Zhang,Lin Wang,Xiaoshuang Chen
Topological insulators (TIs) are under rapid and intensive study in the fields of condensed matter physics, due to exotic electronic properties. Recent studies of photocurrent generation in topological surface states (TSS) properties have insufficient evidence to rule out that of bulk states, hindering the application in optoelectronics. Herein, the chemical vapor transport (CVT) synthesis of GeBi 4 Te 7 crystal by the way of Ge intercalation is realized, enabling isolated Dirac points-associated high-mobility Dirac carriers and larger Seebeck coefficients. Then, the antenna-coupled photodetector in GeBi 4 Te 7 based on planar metal–TI–metal structure is reported, successfully realizing sensitive terahertz response without bias. According to the results, the GeBi 4 Te 7 -based terahertz photodetector has a short response time and a high photoresponsivity (0.42 A W −1 at 0.107 THz and 0.6 A W −1 at 0.28 THz, respectively). The GeBi 4 Te 7 –graphene heterostructure can further improve the responsivity by more than two orders of magnitude, reaching 12 A W −1 at 0.107 THz. These findings bring up doable avenues for GeBi 4 Te 7 materials’ low-energy optoelectronic applications.
研究领域:
凝聚态物理
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材料科学
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光电子学
✓ 已验证
产品关联
DOI
高影响因子
MODERN PHYSICS LETTERS B
·
2023
·
IF 1.9
Yaqi Chen,Xin Fan,Shan Gao,Wenting Ji,Xinjian Li,Yuewen Zhang,Hongan Ma,Xiaopeng Jia
Electronegative S-filled skutterudite compounds have attracted considerable attention due to scattering of low-frequency phonons (35–50 cm − 1 ), but there are few reports on S-filled double-substituted skutterudite. In this work, a series of S-filled Te-Sn double-substituted skutterudite compounds were synthesized using high pressure and high temperature (HPHT) method. The phase composition, microstructure, and thermoelectric properties of S x Co 4 Sb 1 1 Te 0 . 7 Sn 0 . 3 ( x = 0 , 0.05, 0.10, 0.20) samples were systematically determined. The results show that the introduction of S increases the substitution limit of Te in the Sb site. Under the combined effect of the sample synthesis pressure and S filling, the nucleation density of the sample grains increases and the grain size decreases. At the same time, there are numerous special microstructures in the samples synthesized in a high-pressure environment. Thermoelectric performance studies show that a small amount of S filling optimizes the Seebeck coefficient of the sample and increases the power factor (PF). With an increase of the amount of S introduced, the thermal conductivity of the samples decreases significantly. Therefore, the maximum zT value of an S 0 . 0 5 Co 4 Sb 1 1 Te 0 . 7 Sn 0 . 3 sample synthesized at 2.5 GPa pressure is 0.17 at room temperature. The maximum zT value of the sample is 1.26 at 773 K.
研究领域:
材料科学
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能源科学
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产品关联
DOI
高影响因子
CHEMISTRY OF MATERIALS
·
2023
·
IF 8.6
Mengran Sun,Wenhao Xing,Shyong K. Chen,Chunxiao Li,Wenhao Liu,Ming-Hsien Lee,Jiyong Yao
Chalcogenides are promising candidates for exploring mid- and far-infrared nonlinear optical (NLO) materials. Nevertheless, although tellurides possess greater advantages in the above-mentioned spectral regions, the reports on telluride NLO materials are far fewer than those on sulfides and selenides. In this work, a new quaternary NLO-active telluride, KCd4Ga5Te12, was discovered, and its Rb and Cs analogues were successfully synthesized. They are crystallized in the trigonal R3 space group and the structure features a 3D diamond-like framework constructed by vertex-sharing asymmetric MTe4 tetrahedra (centered by disordered Cd and Ga) that are stacked along the c-axis. Moreover, a comprehensive study of their IR NLO properties, photoluminescence properties, and structural features was performed. These compounds exhibited large powder second-harmonic generation (SHG) intensities, about 2.1 (2.7, 4.4) times that of AgGaSe2 in the particle size range of 20–50 (125–150) μm and a wide transmission range (∼25 μm). The SHG-density analysis revealed that the largest component χ333(2) of KCd4Ga5Te12 originates from three types of Te in the crystal structure. More importantly, it is rare in literature to demonstrate the consistency of linear and NLO properties calculated using both ultrasoft pseudopotentials and norm-conservation pseudopotentials. Besides, the title compounds also exhibit strong luminescence emissions around 420 and 470 nm at 298 K. This work implies that title compounds are promising candidates in the IR NLO applications.
研究领域:
材料科学
·
光学
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产品关联
DOI
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2025
·
IF 21.1
Bonan Li,Xi Zhang,Mengxue Chen,Xi Huang,Xiao Fang,Yanfang Yang,Yuanyuan Li,Baochun Ma,Yong Ding
Single-component metallic Te photocatalysts suffer from rapid oxidation in air, while sulfide-based SnS 2 is prone to photocorrosion under prolonged illumination, both severely limiting their photocatalytic efficiency. To address these challenges, we designed an S-scheme heterojunction by uniformly loading SnS 2 nanosheets onto Te nanowires (Te@SnS 2 ). This heterostructure not only suppresses Te oxidation but also facilitates efficient charge separation via the S-scheme mechanism. Further integration of [Co 4 (H 2 O) 2 (PW 9 O 34 ) 2 ] 10- (Co4POM) onto Te@SnS 2 yields the Te@SnS 2 -Co4POM photocatalyst, where Co4POM serves as a hole co-catalyst to enhance activity and inhibit SnS 2 photocorrosion. The system employs two discrete charge-transfer channels, with electrons separated at the Te@SnS 2 S-scheme heterojunction and holes migrating from SnS 2 to Co4POM, thereby spatially separating reduction and oxidation sites and markedly enhancing carrier separation, catalytic activity and durability. The multi-channel charge transfer pathways enabled by Te@SnS 2 -Co4POM synergize component interactions, achieving a CO production rate of 92.6 μmol g −1 h −1 with 97.7 % selectivity in gas-solid CO 2 reduction, alongside effective coupling of CO 2 photoreduction and water photooxidation. In situ DRIFTS, quasi-in situ XPS and irradiated KPFM studies confirm the S-scheme electron transfer in Te@SnS 2 and reveal Co4POM’s role in establishing multi-channel charge transport. This work demonstrates a rational strategy to overcome stability and efficiency bottlenecks in photocatalysis through multi-component charge channel engineering.
研究领域:
材料科学
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光催化
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环境科学
✓ 已验证
DOI
高影响因子
JOM
·
2022
·Vol. 75
·期 5
·1515-1529
·
IF 2.597
Ge Yang,Liu Zhihong,Yu Zhiqian,Wang Huanwen,Lu Xingwu,Zhang Leru,Xia Longgong
The present study focused on the Cu-Pb system and investigating the distribution behaviors of various minor elements through the equilibration-quenching-EPMA analysis experimental technique. Obtained results showed that: (1) An intermetallic compound consisting mainly of Cu-Pb-Se-Te formed below 956°C. (2) As, Sb and Sn had similar distribution behaviors, which mainly entered the solid Cu phase at the temperature range of 500–900°C, but became concentrated in the liquid alloy phase at temperature range of 900–1060°C, and their distribution ratios increased along with increasing temperature. (3) Bi was mainly found in the liquid alloy phase, and its distribution ratio ranged from 6.8 to 836.5 at the experimental conditions. (4) Se and Te formed an intermetallic alloy phase under 900°C, and they enriched in the liquid alloy phase between 960°C and 1060°C. (5) Au was mainly found in the solid Cu phase at the temperature range of 500–900°C, and its distribution ratio was about 1.5 at 900–1060°C. The distribution ratio of Ag decreased from 8.7 to 2.3 when increasing the temperature from 500°C to 1060°C. Distribution behavior of As, Sb, Bi and Sn is consistent with their interfacial enthalpies with Cu and Pb.
研究领域:
冶金学
·
材料科学
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产品关联
DOI
高影响因子
Nano Energy
·
2025
·
IF 17.1
Feng Chen,Yuzhu Qian,Yaoyong Dong,Lijuan Chen,Ting Song,Yong Pei,Xianyou Wang,Xiongwei Wu,Bei Long
The rich valence states (−2 to +6) make elemental Te become a high-capacity electrode in aqueous batteries. The conversion process (Te to TeO 2 ) generates soluble Te 4+ species in aqueous electrolyte. The suppression of conversion process enables a long-term Te electrode at the cost of a partial storage capacity. Herein, a polyethylene glycol additive is introduced to regulate the electrolyte environment. The low H 2 O activity hinders Te 4+ species formation and therefore leads to the insertion-type Te electrode. The reshaped NH 4 + solvation structure facilitates the fast H 2 O removal and firm PEG adsorption on the electrode surface, also improving water-induced side reactions. This, coupled with the introduction of carbon host, contributes to a high-stability Te electrode. Theoretical and experiment studies reveal the reshaped NH 4 + solvation structure/hydrogen-bond network, the strong adsorption capability of B-doped carbon, and the inhibited Te dissolution. Additionally, a series of in/ex-situ characterizations prove the intercalation-type mechanism and the enhanced cycling stability. As a result, this elaborate electrode delivers a high reversible capacities of 376 mA h g −1 at 0.05 A g −1 and a long-term cycling stability with 73.8 % capacity retention at 5 A g −1 after 4500 cycles. This work provides a reference for the storage mechanism regulation in aqueous battery.
研究领域:
电化学
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储能
·
材料科学
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水系电池
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电池技术
✓ 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）