CHEMICAL ENGINEERING JOURNAL
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2026
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IF 13.2
Weixin Zhang,Xin He,Ting Zhang,Haomiao Li,Shuai Yan,Xianbo Zhou,Yewei Guo,Min Zhou,Wei Wang,Kai Jiang,Kangli Wang
Liquid metal batteries (LMBs) are an attractive large-scale energy storage technology due to their ultra-long service life, high safety, and exceptionally low comprehensive cost. Te-based LMBs are regarded as one of the most promising directions for developing high-energy-density LMBs. However, their practical application is still hindered by low Coulombic efficiency and short cycle life, primarily due to the shuttle effect induced by the dissolution of reaction products. Herein, the strategy of employing transition metal (Cu) with strong polar interactions with lithium polytellurides as the alloying element to construct cathode is proposed. Benefiting from the strong adsorption and conversion-promoting capabilities of in-situ generated metal tellurides (CuTe and Cu 4 Te 3 ) towards lithium polytellurides, the shuttle effect is significantly suppressed. The designed Li||Te 7 Cu 3 LMBs deliver a stable cycling performance of over 848 cycles with a coulombic efficiency exceeding 97%, ultrahigh energy density (465 Wh kg −1 ) and outstanding rate performance (2.1C, >90% capacity retention). This study opens up new avenues for designing high-performance Te-based LMB cathodes.
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CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Yanqing Zu,Run Gan,Lixia Jing,Bing Yang,Binglin Zeng,Liru Yuan,Peitao Liu,Xiaodong Li,Ailing Feng,Lei Zhou
Lead-free vacancy-ordered double perovskites are promising scintillator candidates for X-ray imaging due to their excellent photoluminescence and low afterglow. However, the defect-related nonradiative recombination will decrease their photoluminescence intensity as well as scintillation performance. In this work, a facile room-temperature recrystallization approach was used to prepare high-quality Cs 2 HfCl 6 :1% Te perovskites microcrystals with suppressed defects via in situ ligand passivation with cationic quaternary ammonium surfactants. By tuning the chain length of ligands, dodecyltrimethylammonium chloride (DTAC) passivated Cs 2 HfCl 6 :1% Te possesses a high photoluminescence quantum yield (PLQY) up to 73.87%, which is higher than that of didodecyldimethylammonium chloride (DDAC) passivated Cs 2 HfCl 6 :1% Te. The improved performances of perovskites were further clarified by density functional theory (DFT) computations, which reveal that a larger binding energy for DTAC (−2.069 eV) exceeds that of DDAC (−1.891 eV). The Cs 2 HfCl 6 :1% Te (DTAC) exhibits a high spatial resolution (10 lp mm −1 ) and notable light yield (19,693 photons MeV −1 ). This study provides an effective strategy for defect suppression in perovskite scintillators, facilitating their use in high-resolution X-ray imaging.
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Journal of Energy Storage
·
2026
·
IF 10.7
Shujie Liu,Bohao Wang,Haiguang Guo,Xiaoying Hu,Liang Qiao,Ting Deng
Metal tellurides (MTs) as potential electrode materials for sodium-ion battery suffer from detrimental volume expansion, followed by severe capacity degradation. Herein, an inbuilt Zr Te framework is introduced into CoTe 2 to boost the overall electrochemical performance of sodium ion storage. The ex-situ XPS results suggest that the Zr Te framework is unreactive, which can counteract the volume expansion due to the large size of Zr atom. In addition, the suitable introduction of Zr shall decrease the adsorption energy and diffusion barrier of Na + ion, proved by density functional theoretical calculations. As a result, Zr-CoTe 2 with the inbuilt and unreactive Zr Te framework can deliver a maximum capacity of 357 mAh g −1 at 0.05 A g −1 , an outstanding rate capability (121 mAh g −1 at 5 A g −1 ), and an enhanced cyclability (85% retention after 1000 cycles at 1 A g −1 ).
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Journal of Materials Chemistry C
·
2026
·
IF 5.1
Yuxin Huang,Pengfan Li,Xuewei Yu,Lin Sun,Yanfeng Jiang,Pingping Yu
Organic-inorganic hybrid perovskite ferroelectrics with a two-dimensional (2D) structure offer a unique pathway for selfpowered polarization detection, yet their performances is often limited by insufficient anisotropic ratios and carrier separation efficiency. 1D Te microwires exhibits strong broad spectral response, high carrier mobility and pronounced structural anisotropy. In this study, 2D single crystal (EA)2(MA)2Pb3Cl10 (EMPC3) with millimeter scale was synthesized by temperature-lowering method from a saturated solution. The Te microwires prepared by chemical vapor deposition (CVD) method was coated on EMPC3 crystal to obtain the Te/EMPC3 heterojunction. Due to the synergistic effect of the ferroelectric photovoltaic effect of EMPC3 and the built-in electric field of heterojunction, the Te/EMPC3 device exhibits significantly enhanced self-powered photoresponse performances in the 280-1006 nm, showing the highest peak responsivity in the solar blind ultraviolet region. Te/EMPC3 device at 280 nm and 0 V exhibits a higher on/off ratio up to 103, responsivity of 2. 34 A W -1 , specific detectivity of 4.5×10 12 Jones, rise/decay time of 43/33 ms, and dichroic ratio of 3.0, respectively, compared to EMPC3 PD at 1.2 V (on/off ratio of 178, 0.95 A W -1 , 1.1×10 12 Jones, response time of 105/103 ms, and dichroic ratio of 1.8). The significantly enhanced anisotropy ratio renders the device highly promising for applications in polarization imaging and dual-wavelength encrypted communications. This demonstrates the potential of the heterojunction system as a new platform for next-generation, self-powered, polarization-sensitive optoelectronics.
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CERAMICS INTERNATIONAL
·
2025
·
IF 5.6
Ying Wang,Shanze Liu,Fangbiao Wang,Xin Fan,Qi Chen,Youjin Zheng
The high-pressure effect can effectively regulate the bandgap width of thermoelectric materials, thus optimizing the material properties. In this study, the high temperature and high pressure (HPHT) technique was employed to synthesize In-filled, Te/S double-substituted skutterudite-based thermoelectric materials. The effects of synthesis pressures ranging from 2.0 to 3.5 GPa on their phase structure, microstructure, and thermoelectric properties were systematically investigated. XRD and EDS analyses confirm the phase-pure synthesis of In 0.05 Co 4 Sb 11.3 Te 0.6 S 0.1 . The experimental results combined with first-principles calculations indicate that the pressure-induced bandgap widens from 0.245 eV at 2.0 GPa to 0.270 eV at 3.0 GPa, resulting in not only an exponential decay of the conductivity but also a significant increase in the absolute value of the Seebeck coefficient. The analysis based on the Callaway model demonstrates that introducing In, Te, and S elements strengthens grain boundaries, increases point defects, and enhances resonance scattering, thereby effectively reducing lattice thermal conductivity. At 773 K, the 3.0 GPa sample exhibits the lowest thermal conductivity of 1.56 Wm −1 K −1 and a maximum zT value of 1.20, representing a 40.18 % increase over that of the sample synthesized at 2.0 GPa and an 11.02 % increase over that of the Co 4 Sb 11.3 Te 0.6 S 0.1 sample. In addition, the sample synthesized at 3.5 GPa demonstrates excellent mechanical performance, exhibiting a Vickers hardness of 11.12 GPa. New strategies have been provided for the development of materials with both high thermoelectric and mechanical properties.
研究领域:
材料科学
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凝聚态物理
·
无机非金属材料
·
能源材料
·
热电转换
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Crystals
·
2024
·Vol. 14
·期 8
·728
·
IF 2.4
Boyu Wang,Zhiyuan Jiang
Recently, there has been a growing interest in skutterudite (SKD) compounds containing electronegative elements such as Br, Cl, S, Se, and Te, owing to their increased diversity and the versatility of filler atoms. This study focused on the thermoelectric performance of a series of (Ni, Te) co-doped SKDs filled with the electronegative element S, denoted as SxNi0.4Co3.6Sb11.2Te0.8(x= 0, 0.1, 0.2, and 0.3). These compounds were prepared using a combination of a solid-state reaction and spark plasma sintering techniques. The results showed that (Ni, Te) co-doping introduced excess electrons in the SKD lattice, while the incorporation of the element S into the SKD voids optimized carrier concentration. This led to a considerable increase in the absolute Seebeck coefficient to 110.6 μV K−1at ambient temperatures. The presence of S fillers induced phonon resonance scattering and point scattering, which reduced lattice thermal conductivity and ultimately improved the thermoelectric figure of meritzT, which reached 0.93 for S0.3Ni0.4Co3.6Sb11.2Te0.8at 823 K.
研究领域:
材料科学
·
物理学
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Advanced Energy Materials
·
2024
·
IF 24.4
Yuchen Li,Shuaihua Wang,Mao Yu,Huan Li,Benben Li,Kang Zhu,Weishu Liu
Gel-based ionic thermoelectric (i-TE) cells provide alternative thermal energy harvesting from the environment, showing obvious advantages in voltage matching for self-powered Internet-of-Things (IoT) sensors. However, the gel-based i-TE cells always suffer a long thermal charging time and poor output power performance. Herein, a multilayer electrode engineering strategy is proposed from the device-design level, aiming to decrease the ions' diffusion distance, increase the electrode surface area, and facilitate the ions' reaction and recovery process. The thermal charging time is shortened from 27 to 8 min as the electrode layers increase from 2 to 8. An ultrahigh instantaneous power density of 15.8 mW m −2 K −2 and 2 h output energy density ( E 2h ) of 403 J m −2 are achieved in an 8-layer electrode i-TE cell. Finally, A flexible and wearable i-TE device with 20 units is demonstrated to generate a remarkable voltage of 3.8 V and output power of 282 µW by harvesting the human body heat. This work provides a feasible and effective route to design the i-TE device, hopefully promoting its practical power generation application.
研究领域:
材料科学
·
能源工程
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INORGANIC CHEMISTRY
·
2022
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IF 5.436
Xin Fan,Shan Gao,Qi Chen,Dayi Zhou,Lijie Chang,Yao Wang,Yuewen Zhang,Le Deng,Hongan Ma,Xiaopeng Jia
In recent years, skutterudite filled with electronegative elements (S, Se, Cl, Br) has attracted the extensive attention of researchers. By doping electron donors (Pb, Ni, or Te, S, Se) at the Co or Sb sites, the electronegative elements can form thermodynamically stable compounds in the intrinsic pores of the skutterudite, substantially expanding the research scope of skutterudite. In this study, S0.05Co4Sb11.3Te0.6Se0.1 skutterudite was synthesized at high pressure and high temperature, with a pressure range of 2.0–3.5 GPa. The phase composition, micro-morphology, and electrical and thermal transport properties were systematically characterized. The micromorphology analysis shows that the introduction of S element and substituting Te and Se at the Sb sites inhibit the grain growth in a suitable high-pressure environment. Substantial differences are observed in the directions of the lattice stripes in the samples, and rich grain boundaries and many lattice distortions and dislocation defects occur. The carrier concentration can be optimized by filling the voids of the skutterudite with a few S atoms, and the thermoelectric properties can be optimized by scattering phonons through resonance scattering and defect scattering. The samples synthesized at a pressure of 3.0 GPa and a temperature of 900 K have a maximum power factor of 23.85 × 10–4 W m–1 K–2 and a maximum zT value of 1.30 at a test temperature of 773 K.
研究领域:
材料科学
·
热电材料
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Nano Energy
·
2023
·
IF 17.6
Xiangcong He,Jinju Zheng,Tao Yang,Deliu Ou,Chris R. Bowen,Songhan Shi,Qiaochu Chen,Hui Fu,Shuangwu Huang,Yumin Ye,Xiaocheng Huang,Wenna Liu,Weiyou Yang
Piezoelectric nanogenerators (PENGs), which operate based on mechanical-to-electrical energy conversion, have been widely explored for exciting applications in modern devices such as wearable electronics , self-powered sensors, and energy harvesters . Herein, we report on high-performance PENGs based on Cs 2 Ag 0.3 Na 0.7 InCl 6 double perovskite (CDP) within a polyvinylidene fluoride (PVDF) matrix, which exhibit enhanced polarity due to rationally designed Zr/Te codoping. As a proof of concept , the resultant PENGs based on Zr/Te codoped CDP@PVDF deliver an excellent piezoelectric output, with a maximum open-circuit voltage and short-circuit current density of 67 V and 18 μA·cm −2 . This level of performance is ∼19 and ∼12 times higher than PVDF-based PENGs with no CDP, and ∼2 and ∼4 times higher than CDP@PVDF-based PENGs without doping or with single Te doping, and ∼1 and ∼2 times higher than CDP@PVDF-based PENGs with single Zr doping, respectively. Moreover, the as-assembled PENGs exhibit impressive potential in wearable energy harvesters, motion sensors, and DC-power devices with robust stability, underscoring their bright future toward practical applications.
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APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
·
2021
·Vol. 127
·期 1
·1-13
·
IF 2.584
Xie Ping,Li Bin,Chen Gang,Zheng Weimin,Ma Xiaofeng,Luo Haihan,Liu Dingquan
The dielectric function of phase-change materials (PCMs) presents a tremendous difference for the amorphous and crystalline states. Therefore, the measurement of the mid-infrared transparency of thin films of PCMs will provide a cost-efficient method to reveal the dependence of amorphous-crystalline phase transition on their compositions. Although Sb–Te–Se system has shown the advantages of the high speed, low power consumption and long retention life, the information on the mid-infrared transparency of Sb–Te–Se thin films is still insufficient. In our investigation, combinatorial materials libraries of Sb–Te–Se thin films were synthesized. The composition and mid-infrared spectral transmittance of each pixel of Sb–Te–Se thin film in the library were characterized using the energy dispersive X-ray analysis (EDX) and Fourier-transform infrared (FTIR) spectrometer, respectively. The in-depth chemical composition for randomly selected pixels was identified using secondary ions mass spectroscopy (SIMS). The crystallographic structure of some pixels was also identified using micro-area X-ray diffraction (μ-XRD). It can be found that, with the change of composition in Sb–Te–Se thin films, their mid-infrared spectral transmittance can be organized into three distinctive groups, corresponding to amorphous Sb–Se, Sb 2 Se 3 orthorhombic structure and Sb 2 Te 3 rhombohedral structure, respectively. Therefore, the amorphous-crystalline phase transition and the phase-change from the orthorhombic structure of Sb 2 Se 3 to the rhombohedral structure of Sb 2 Te 3 can be completely reflected in the mid-infrared spectral transmittance of Sb–Te–Se thin films.
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JOURNAL OF ALLOYS AND COMPOUNDS
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2017
·
IF 3.133
Fan Sun,Zhongnan Guo,Huanhuan Zhang,Wenxia Yuan
Previous study suggested that Se-site doping with Te or S in tetragonal FeSe adjusts the superconductivity only by expanding or compressing the lattice parameters . However, three chalcogens X ( X = S, Se, Te) show different electronegativity, which could directly change the interaction between Fe & X , and their electronic structures. In order to understand this underlying mechanism, the samples with different anion compositions but the same lattice parameters are required. In this work, two superconductors : FeSe 0.95 Te 0.03 S 0.02 and FeSe 0.9 Te 0.057 S 0.043 have been synthesized by solid state reaction. The thus-obtained samples have the same lattice parameters in tetragonal single phase as that of undoped FeSe. It is found that despite the unchanged lattice, S/Te co-doping on Se-site still increased the density of the electronic states (DOS) near the Fermi level, thereby enhanced the superconductivity. Our results suggest that the influence of Se-site doping with the same valence chalcogen in superconducting FeSe is not simply in the view of the lattice size, effects on electronic structures originated from different electronegativity during Se-site doping should also be considered.
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Discover Oncology
·
2024
·Vol. 15
·期 1
·1-12
·
IF 2.8
Liu Yueli,Li Fan,Wang Qiongyu,Zhang Yunfei,Tian Shuhong,Li Biao
Anlotinib is effective in treatment of many kinds of malignant cancer, but its antineoplastic effects on esophageal cancer remains unclear. This study aims to investigate its impact on esophageal cancer and the underlying mechanisms. Anlotiniband 5-fluorouracil + cisplatin (5-FU + DDP) was administered separately to human esophageal cancer TE- 1 cells tumor xenograft mouse models every 3 days. Tumor size and body weight were measured before each treatment and at the end of the experiment. In vitro studies were conducted using TE- 1 cells to examine the effects of Anlotinib. Cell viability, migration, proliferation, apoptosis, cell cycle, their regulatory proteins and the transcriptomic changes were analyzed. Anlotinib reduced tumor size, tumor weight, and the ratio of tumor weight to body weight in vivo. It decreased the viability of TE- 1 cells, with a 50% growth-inhibitory concentration of 9.454 μM for 24 h, induced apoptosis, and arrested TE- 1 cell cycle in the S phase. It inhibited migration and proliferation while negatively regulating the PI3K/Akt signaling pathway. Enhanced expressions of P21, Bax, and lowered expressions of cyclin A1, cyclin B1, CDK1, PI3K, Akt, p-Akt, and Bcl-2 were observed after Anlotinib treatment. Anlotinib exhibits antineoplastic activity against human esophageal cancer TE- 1 cells by negatively regulating the PI3K/Akt signaling pathway, consequently altering the expressions of proteins related to proliferation, apoptosis, and the cell cycle.
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PubMed
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