Science Advances
·
2024
·Vol. 10
·期 14
·
IF 11.7
Yingtao Zhao,Sanchuan Zhao,Xixi Pang,Anni Zhang,Chenning Li,Yuxuan Lin,Xiaomeng Du,Lei Cui,Zhenhua Yang,Tailang Hao,Chaopeng Wang,Jun Yin,Wei Xie,Jian Zhu
Flexible and stretchable thin-film transistors (TFTs) are crucial in skin-like electronics for wearable and implantable applications. Such electronics are usually constrained in performance owing to a lack of high-mobility and stretchable semiconducting channels. Tellurium, a rising semiconductor with superior charge carrier mobilities, has been limited by its intrinsic brittleness and anisotropy. Here, we achieve highly oriented arrays of tellurium nanowires (TeNWs) on various substrates with wafer-scale scalability by a facile lock-and-shear strategy. Such an assembly approach mimics the alignment process of the trailing tentacles of a swimming jellyfish. We further apply these TeNW arrays in high-mobility TFTs and logic gates with improved flexibility and stretchability. More specifically, mobilities over 100 square centimeters per volt per second and on/off ratios of ~104 are achieved in TeNW-TFTs. The TeNW-TFTs on polyethylene terephthalate can sustain an omnidirectional bending strain of 1.3% for more than 1000 cycles. Furthermore, TeNW-TFTs on an elastomeric substrate can withstand a unidirectional strain of 40% with no performance degradation.
研究领域:
材料科学
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纳米技术
·
电子工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
LASER PHYSICS LETTERS
·
2019
·Vol. 16
·期 11
·115101
·
IF 2.328
Z P Zhao,C F Yao,Z R Li,Z X Jia,G S Qin,Y Ohishi,W P Qin
We reported a multi-watt ~2.1 µm laser output from a 30 cm long Ho3+-doped fluorotellurite microstructured fiber (FTMF) pumped by a homemade 1980 nm Tm3+-doped silica fiber laser. When the pump power was increased to 61.8 mW, lasing at 2067 nm was achieved from the Ho3+-doped FTMT, and an unsaturated maximum output power of ~8.08 W was obtained for a pump power of ~10.56 W. The corresponding slope efficiency was about 77.21%. During our experiments, no obvious damage was observed on the end face of the Ho3+-doped FTMF. Our results indicated that Ho3+-doped fluorotellurite fibers had the potential for constructing high power fiber lasers at 2.1 µm.
研究领域:
光学
·
材料科学
✓ 已验证
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2025
·
IF 9.7
Mi Wang,Yangjun Luo,Chuanzhen Feng,Jin Wan,Han Guo,Guangxu Yao,Huijuan Zhang,Yu Wang
Transition metal alloys catalysts have been extensively studied in oxygen reduction reactions (ORR); however, their suboptimal catalytic activity presents a significant challenge. Modifying the local electronic configuration of the catalytic active site by heteroatom doping is an effective strategy to enhance the electrocatalytic performance. Herein, an ORR Te/NiFe@NCNFs electrocatalyst, featuring with Te modified NiFe alloys nanoparticles and anchored on N-doped carbon nanofibers (NCNFs), was constructed via a surface-modified synthesis strategy. The introduction of Te leads to electron transfer on the surface of Te/NiFe@NCNFs, forming an electron-deficient NiFe site with high catalytic activity. Theoretical calculations confirm that Te regulates an electron redistribution and reduces the d-band centers of Fe and Ni, which help to facilitate the desorption of ORR intermediate oxides. As a result, Te/NiFe@NCNFs exhibit a half-wave potential of 0.86 V, superior to that of Pt/C (0.84 V) and most reported modified-NiFe-based catalysts. When assembled into a zinc-air battery, Te/NiFe@NCNFs deliver remarkable power density of 158.8 mW cm −2−2 and specific capacity of 778.1 mA h g Zn −1 . The present study presents new insights into the modulation of electronic structure in transition metal alloys, providing a feasible and innovative approach for the design of unrivaled ORR electrocatalysts.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Materials Chemistry C
·
2024
·Vol. 12
·期 21
·7725-7731
·
IF 5.7
Jingxia Wang,Bin Wang,Yifen Wang,Ruixia Yang,Lanfang Wang,Fang Wang,Xiaohong Xu,Yang Liu
Binary transition metal telluride (MTe2−x, 0 ≤ x ≤ 1) nanocrystals (NCs) display fascinating structure- and composition-dependent magnetic properties for potential applications in spintronic devices. However, achieving precise control over the morphology and composition of MTe2−x NCs during synthesis poses significant challenges due to the limited reactivity between the metal and Te as well as the ambiguous reaction mechanisms. Here, we demonstrate a general synthetic approach to produce a diverse range of MTe2−x NCs, including Cr2Te3, MnTe2, FeTe2, CoTe2−x, and NiTe2−x. Specifically, a series of NiTe2−x nanosheets were synthesized by manipulating the feed ratio of Te : Ni and reaction temperature. Our results indicate that the formation mechanism of these binary MTe2−x NCs can be elucidated through the tellurization of preformed metal oxide nanoparticles. The binary MTe2−x NCs displayed different magnetic behaviors including ferromagnetic FeTe2 and Cr2Te3, paramagnetic CoTe2−x and NiTe2−x, and antiferromagnetic MnTe2. Our work establishes a foundation for the synthesis of magnetic MTe2−x NCs with precisely tailored morphology and composition and emergent magnetic characteristics.
研究领域:
材料科学
·
物理学
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2025
·
IF 8.2
Zongfu Cai,Bo Wu,Xinxing Zhou,Kerui Li,Chengyi Hou,Qinghong Zhang,Yaogang Li,Hongzhi Wang
The demand for highly sensitive temperature-response materials is critical for the advancement of intelligent temperature sensing and fire warning systems. Despite notable progress in thermoelectrical (TE) materials and devices, designing TE materials suitable for wide-range temperature monitoring across diverse scenarios remains a challenge. In this study, we introduce a TE temperature sensor for fire warnings and hot object recognition, utilizing an all-inorganic TE film composite of reduced graphene oxide (rGO)/Te nanowires (Te NWs). The resulting all-inorganic TE film, annealed at a high temperature, exhibits distinct response ratios to varying temperature changes, enabling consistently sensitive thermosensation. The robust linear relationship between open circuit voltage and temperature difference establishes it as an effective thermoreceptor for enhanced temperature alerts. Furthermore, we demonstrate that the assembled TE sensor provides rapid high-temperature warnings with adjustable threshold voltages (1–7 mV), achieving an ultrafast response time of approximately 4.8 s at 1 mV threshold voltage. Additionally, this TE sensor can be integrated with the gloves to monitor high-temperature objects in various scenarios, such as the brewed milk in daily life and heating reactors in industrial applications. These results offer perspectives for future innovations in intelligent temperature monitoring.
研究领域:
材料科学
·
智能传感技术
✓ 已验证
DOI
PubMed
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2022
·
IF 5.518
Yuting Dai,Zefeng Jing,Zhangdi Li,Yao Zhu,Fengxian Qiu,Jianming Pan,Tao Zhang,Chunxiang Li
Fabrication of eco-friendly and efficient biosorbents played a crucial role in adsorbing tellurium from wastewater, yet which was confronted with large obstacles to achieve a high adsorption capacity and biocompatibility simultaneously. Herein, a simple and economical strategy for adsorbing tellurium by nanosized zero-valent iron/ cellulose fiber hybrid aerogel (nZVI/CFA) is proposed. Cellulose fiber aerogel (CFA) was firstly fabricated by freeze-drying the cellulose fibers that were extracted from agricultural waste maize bracts. Then, the nZVI was uniformly anchored on the porous network skeleton structure of CFA by liquid-phase reduction. The nZVI/CFA exhibited mesoporous structure with a large specific surface area (399.85 m 2 /g), uniform pore size (3.92 nm) and pore volume (0.47 cm 3 /g). According to the kinetics and isothermal model, the tellurium adsorption by nZVI/CFA was uniform and endothermic-chemical on the monolayer surface. Due to the highly exposed specific surface area , more active sites and the synergistic effect of electrostatic attraction, reduction and substitution, nZVI/CFA has a high adsorption capacity (119.32 mg/g). As a low-cost and efficient biosorbent, nZVI/CFA provided a new idea for the treatment with other abandoned photovoltaic materials and agricultural waste.
研究领域:
环境科学
·
材料科学
✓ 已验证
DOI
高影响因子
Journal of Materials Chemistry A
·
2022
·Vol. 10
·期 38
·20489-20496
·
IF 14.511
Weihua Wang,Xiaowei Lu,Lin Sun,Jipeng Luo,Quan Shi,Na Ta,Peng Jiang,Xinhe Bao
Thermoelectric materials, which can directly convert thermal energy into electricity, play an important role in waste heat recovery. Sb2Si2Te6 is a promising medium-temperature thermoelectric material for power generation. However, its application is restricted by the relatively low power factor (PF) and the decompostion at high temperature. Herein, we successfully improved the power factor of Sb2Si2Te6 by doping with germanium (Ge). Benefiting from the optimized carrier concentration, the power factor of Sb2Si1−xGexTe6 remains higher than 1100 μW m−1 K−2 from 473 K to 773 K and the highest zT value reaches 1.0 at 773 K. Furthermore, the power generation performance of a single-pair thermoelectric module, consisting of Sb2Si1.94Ge0.06Te6 and Mg3.2Sb1.5Bi0.49Te0.01, is evaluated by three-dimensional numerical simulation. The simulated conversion efficiency is as high as 13% at a temperature difference of 500 K, and the power density can reach up to 3 W cm−2. Our results demonstrate that Ge doping can effectively modify the thermoelectric properties of Sb2Si2Te6 and improve its power generation performance, paving the way for realistic applications in the medium-temperature region.
研究领域:
材料科学
·
能源工程
✓ 已验证
DOI
高影响因子
CRYSTENGCOMM
·
2018
·Vol. 20
·期 47
·7729-7738
·
IF 3.304
Heng Quan Yang,Yong Jin Chen,Xiao Yang Wang,Lei Miao,Xiao Yan Li,Xiao Dong Han,Xu Lu,Guo Yu Wang,Xiao Yuan Zhou
The rational design and fabrication of nanostructures has become a fashionable strategy for pursing high thermoelectric performance in solid-state materials. Here we report nanostructured Te–Sb2Te3 composites with significantly enhanced thermoelectric performance through a scalable bottom-up method followed by a rapid sintering process. The power factor along with the carrier concentration could be significantly enhanced by increasing the number of point defects of . Meanwhile, a great number of boundaries and hetero-interfaces between the Te and Sb2Te3 nanoparticles could play an important role in blocking phonons, resulting in the evident suppression of lattice thermal conductivity. Ultimately, a highest zT value close to 1.0 could be achieved at 623 K in samples with components of 2.6 mol% Sb2Te3 and 97.4 mol% Te. Such a peak zT value is comparable to that of doped Te materials synthesized by the conventional solid-state reaction process. This work reveals that high thermoelectric performance could be realized in an intentionally designed nanocomposite by synergistically improving the power factor and suppressing the lattice thermal conductivity.
研究领域:
材料科学
·
热电材料
·
纳米结构工程
·
固态物理
·
能源转换
✓ 已验证
DOI
高影响因子
ChemNanoMat
·
2021
·Vol. 7
·期 3
·323-327
·
IF 3.154
Yuxi Guo,Lixing Kang,Shaojia Yu,Jiefu Yang,Xiaofei Qi,Zhiyong Zhang,Zheng Liu
Graphical Large-scale 2D CrTe nanoflakes with a size of ∼250 μm were successfully synthesized via a chemical vapor deposition process, which used mixed compounds (Cr: CrCl 3 ⋅ 6H 2 O: Te) as Cr source and excessive Te in the upstream as Te source. The Te in the mixed compounds decreases the melting point of the mixed compounds and promotes the nucleation and growth of CrTe nanoplates, which leads to large-scale growth of CrTe nanoflakes. Recently, 2D magnetic materials have attracted much attention due to their potential applications in spintronic devices. Chromium telluride (CrTe) flakes have been reported for hard magnetism with a strong perpendicular anisotropy. However, the synthesis of large-scale CrTe nanoflakes on SiO 2 /Si substrate is still a challenge. Here, we report the synthesis of large-scale CrTe nanoflakes with a size of up to ∼250 μm on a SiO 2 /Si substrate via chemical vapor deposition (CVD). Our work demonstrated an effective pathway to synthesize large-scale 2D transition metal tellurides.
研究领域:
材料科学
·
物理学
✓ 已验证
产品关联
DOI
高影响因子
Nano Energy
·
2021
·
IF 17.881
Caiju Chen,Huyun Liu,Haitao Wang,Yawen Zhao,Ming Li
Solar vapor generation utilizes ubiquitous solar energy to address the issue of global water shortage. However, its large-scale field deployment is greatly hampered by inefficient solar absorption, moderate evaporation efficiency and high cost. Here, we report a new hybrid photothermal membrane, named broadband plasmonic Cu 2−x Te nanowire (bpCu 2−x Te) membrane, for interfacial solar evaporation to produce freshwater from various water sources. The bpCu 2−x Te membrane features excellent broadband solar absorption (~95.9%), high porosity and hydrophilicity , and low thermal conductivity (0.55 W/(m K)), which enables a water evaporation rate as high as 4.3 kg/(m 2 h) with the evaporation efficiency of up to 96% under 3 kW/m 2 solar irradiation . The evaporation performance of the present Cu 2−x Te membrane can be maintained even after it recycles multiple times under various solar irradiance, indicating excellent durability and stability. Efficient solar desalination of seawater is further demonstrated with the bpCu 2−x Te membrane to deliver drinkable water. The combination of scalable fabrication ability, low cost and excellent solar evaporation performance of the bpCu 2−x Te membrane highlights the potential for seawater purification and desalination in field applications.
研究领域:
材料科学
·
能源科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
·
2023
·
IF 13.6
Xue Shao,Guanglei Yao,Xiaoping Chen,Fengxian Qiu,Tao Zhang
Two-dimensional (2D) membrane materials are widely employed for the accurate sieving of ionic contaminants and are of great importance for water reuse . However, 2D membrane materials often suffer from uneven thickness and surface defects , which severely limit their application prospects. Herein, a continuous 2D membrane (LCUM/D) was prepared using cellulose nanofibrils (CNFs) as the support backbone for the assembled layered double hydroxides (LDHs) and dopamine (DA) as the adhesive. The results demonstrated that LDHs could be uniformly distributed in the network structure of CNFs, and the defects on the membrane surface could be effectively compensated by DA. Simultaneously, the continuous LCUM/D showed excellent rejection (97.18%) and selectivity of ionic contaminants tellurium. Dopamine not only compensated for the surface defects of the 2D membrane and enhanced the rejection of tellurium, but also caused no significant loss of water permeance. Moreover, the LCUM/D exhibited stability, which facilitated its long-term application. In addition, the improved hydrophilicity allowed LCUM/D satisfactory anti-fouling properties. This study provides new dimensional insights into the fabrication of continuous 2D membranes for the removal of ionic contaminant and enhances their application prospects in wastewater treatment .
研究领域:
材料科学
·
环境工程
·
水处理
✓ 已验证
产品关联
DOI
PubMed
高影响因子
INORGANIC CHEMISTRY
·
2017
·
IF 4.857
Yi-Gang Chen,Nan Yang,Xing-Xing Jiang,Yao Guo,Xian-Ming Zhang
The first lead tellurate–nitrate nonlinear-optical (NLO) crystal, Pb9Te2O13(OH)(NO3)3, featuring a 3D anionic diamondlike toplogical structural motif formulated as [Pb9O13]8– constructed by unique nonanuclear basket-shaped Pb@Pb8O14 clusters has been hydrothermally achieved, in which the Pb@Pb8O14 cluster shows a core–shell structure with one PbO10 polyhedron enclosed by eight PbOx (x = 3 and 4) polyhedera via edge and face sharing. The hexavalent Te in TeO5(OH) octahedra is linked to a [Pb9O13]8– cluster to form a rare [Pb9Te2O13(OH)]3+ cationic framework. The compound demonstrates a powder second-harmonic-generation (SHG) response of about 1.2 times that of KH2PO4 (KDP) as well as a wide transparency range. Calculations on the local dipole moment and SHG coefficient reveal that the net polarization is zero because of a Kleinman-forbidden point group. Further analysis shows that the SHG response results from structure-induced variations by thermal vibrations of the lattice rather than the intrinsic dipole moment, which offers another insight on the design of new NLO materials.
研究领域:
材料科学
·
晶体学
✓ 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）