ADVANCED FUNCTIONAL MATERIALS
·
2025
·Vol. 35
·期 36
·2425475
·
IF 19
Sai Dong,Zhuo Chen,Huibin Liu,Ying Zhang,Xiaoteng Yan,Zhijie Cui,Zhaohua Jiang,Jing Li,Huiting Xu,Wenchao Peng,Jiapeng Liu
Aqueous copper-selenium (Cu-Se) batteries have received increasing attention in energy storage research due to their high theoretical specific capacity and inherent safety. However, the sluggish reaction kinetics of the selenium (Se) cathode hinder its development. Herein, an accordion-like structure transition metal boride (Mo 4/3 B 2 T z MBene) with ordered metal vacancies is synthesized and employed as Se catalytic host material for aqueous Cu-Se batteries. The Mo 4/3 B 2 T z host material exhibits a unique layered structure, abundant active sites, and high electrical conductivity, which significantly improves the kinetic properties of the selenium redox reaction in aqueous Cu-Se batteries. As a result, the Se-Mo 4/3 B 2 T z cathode delivers a high discharge capacity of 1010 mAh g −1 at 1 A g −1 and greatly enhances rate performance with a reversible capacity of 693 mAh g −1 at 25 A g −1 . Meanwhile, the Se-Mo 4/3 B 2 T z cathode maintains an impressive 755 mAh g −1 discharge capacity after 1500 cycles at 20 A g −1 . Furthermore, the conversion mechanism of aqueous Cu-Se batteries is illustrated by different characterization methods and density functional theory calculations. This work introduces a distinctive approach to accelerating the reaction kinetics of aqueous Cu-Se batteries via MBene-based catalytic host material.
研究领域:
储能
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电化学
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材料科学
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电池技术
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纳米材料
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DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2025
·
IF 6.3
Jing Liu,Silan Zhou,Rong Hu,Lin Xue,Jun Li
The development of advanced electrode materials with high specific capacitance and long-term stability is crucial for next-generation supercapacitors. In this work, a novel Bi₂O₂Se/polyaniline (PANI) composite electrode was synthesized via an optimised synthesis protocol. The developed composite exhibited remarkable electrochemical performance, achieving a specific capacity of 630.5 mAh g⁻¹ at 1 A g⁻¹ – surpassing the performance of pristine Bi₂O₂Se (266.7 mAh g⁻¹) by a factor of 2.3. Notably, it achieved 60 % capacity retention at an ultra-high current density of 20 A g⁻¹ and maintains 73 % capacity retention after 5000 cycles, demonstrating outstanding cycling stability. These breakthroughs stem from the synergistic interplay between Bi₂O₂Se's interlayer architecture and PANI's pseudocapacitive properties. This work establishes the Bi₂O₂Se/PANI composite as a promising electrode material for next-generation supercapacitors and offers a versatile design framework for flexible electronics and grid-scale renewable energy storage systems.
研究领域:
材料科学
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电化学
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储能
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纳米技术
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DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Chuangchuang Gong,Jiawei Ding,Chenxu Wang,Yijing Zhang,Hongwei Cong,Houjiang Liu,Yue Guo,Kai Song,Chunsheng Shi,Fang He
The electronic structure, transport properties and magnetic properties of the material can be adjusted by regulating the formation and concentration of anionic vacancies. In particular, materials based on transition metal chulides (TMC) have high second-order nonlinearity and atomic thin thickness, and anionic vacancy engineering can effectively achieve the optimization of material properties. However, the impact of anion vacancy engineering on dipole polarization has not been fully resolved and clarified yet, and it cannot be solely relied upon semi-empirical methods. Therefore, it is of utmost importance to deeply understand the intrinsic mechanism between vacancies and electromagnetic (EM) parameters. This knowledge will provide crucial guidance for the development of advanced electromagnetic wave (EMW) absorption materials. In this study, a novel approach is proposed for the first time, which involves the creation of Se vacancies at the heterogeneous interface formed by Fe-Se compounds. Remarkably, the generation of Se vacancies leads to an increased electron transfer from Fe to Se atoms, resulting in the formation of numerous dipolarization centers. This effect significantly enhances the material’s polarization loss capacity. Furthermore, the presence of Se vacancies acts as traps for nearby free electrons, reducing the material’s conductivity, weakening the skin effect, and improving impedance matching. The precise modulation of Se vacancies in Fe-Se compounds has led to the achievement of ultrathin characteristics and significantly enhanced EM absorption capabilities. With a thickness of only 1.5 mm, the effective absorption bandwidth (EAB) reaches 5.42 GHz, covering the Ku band, which represents a remarkable increase of 53.5 % compared to unmodified Fe-Se compounds. At a thickness of 1.3 mm, the minimum reflection loss (RL) reaches −42.4 dB, demonstrating an impressive improvement of 41.3 %. Moreover, simulations of the radar cross section (RCS) indicate that the material possesses a robust microwave attenuation ability, underscoring its great potential for practical applications.
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高影响因子
RARE METALS
·
2017
·Vol. 37
·期 4
·343-350
·
IF 1.189
Qin Bing-Chao,Xiao Yu,Zhou Yi-Ming,Zhao Li-Dong
IV–VI compounds are considered as promising thermoelectric materials, and high thermoelectric performance was achieved in IV–VI solid solutions. In this work, the thermoelectric properties of Pb–Sn–Te–Se-based solid solutions were systematically investigated. Among these solid solutions, it is found that a figure of merit ( ZT ) peak value of 1.0 at 873 K can be obtained in (PbTe) 0.5 (SnTe) 0.5 , on account of the combination of superior electrical properties in SnTe and low thermal conductivity in PbTe. Furthermore, we investigated and summarized the thermoelectric transport properties and proposed the thermoelectric performance maps for the IV–VI solid solutions in Pb–Sn–Te–Se system. This comprehensive investigation on Pb–Sn–Te–Se-based solid solutions can effectively guide and scan thermoelectric performance for a given unknown composition and enhance the thermoelectric properties in IV–VI compounds. Graphical
研究领域:
材料科学
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凝聚态物理
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功能材料
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热电转换
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半导体物理
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DOI
高影响因子
Nano Energy
·
2020
·
IF 16.602
Na Zhao,Jian Qin,Lujia Chu,Linzhe Wang,Dan Xu,Xiujuan Wang,Huijuan Yang,Jiujun Zhang,XiFei Li
The development of potassium ion batteries is restricted by the intrinsic large ion radius, resulting in dramatic volume change of electrodes and slow faradic reaction in kinetics. High requirements are proposed for the structure design of anodes. In this work, Se coating-Sb nanocrystalls-three dimensional interconnected carbon networks (3D Se@Sb@C) heterogeneous structure was prepared by a low-temperature template-assisted CVD method. The network and sandwich structure can not only shorten the solid-state diffusion path of K + , but also alleviate the volume change of Sb. Moreover, the hetero interface between Se and Sb can form chemical bonding and further generate heterogeneous junctions in electrochemical reactions, providing more electron states at the Fermi energy level and reducing the ionic diffusion barrier of K + . Benefiting from it, the 3D Se@Sb@C electrode possess an optimized energy storage mechanism and exhibits an outstanding rate performance and an ultra-long lifespan of more than 5000 cycles with 87% of capacity retention, which is rarely reported for PIB anodes. It reveals the important role of heterogeneous structure in potassium storage, which can inspire other researchers to achieve superior electrochemical performance by interface engineering for electrode materials.
研究领域:
材料科学
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电化学
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DOI
高影响因子
Journal of Materials Chemistry A
·
2020
·Vol. 8
·期 42
·22065-22074
·
IF 11.301
Hongling Guo,Gang Wang,Rutao Meng,Yali Sun,Siyu Wang,Shengli Zhang,Jianyu Wu,Li Wu,Guangxing Liang,Hui Li,Yi Zhang
A Li+-doping strategy is a promising route for achieving highly efficient Cu2ZnSn(S,Se)4 (CZTSSe) photovoltaic devices with a large grain absorber layer, high p-type carrier concentration and good band alignment at the Cu2ZnSn(S,Se)4/CdS interface. However, Li+-doped CZTSSe solar cells based on in situ and pre-deposition doping strategies reported thus far generally suffer from massive lithium losses and sodium rejection due to the soda-lime glass substrate. Therefore, simultaneously fulfilling the goals of simple and efficient Li+-doping remains a major technical challenge, which may be addressed, as we demonstrate here, with the development of a Se&LiF co-selenization process. By engineering the band alignment of the Cu2ZnSn(S,Se)4/CdS interface through the Se&LiF co-selenization process, an encouraging efficiency of 11.63% with an open-circuit voltage deficit of 0.583 V has been reached. Furthermore, the crystallinity of the absorber layer and the distribution of copper are improved, and a more copper-poor CZTSSe surface is formed. This novel Li+-doping strategy introduces a new approach towards the goal of high-performance CZTSSe solar cells compatible with a simple manufacturing process and excellent performance.
研究领域:
材料科学
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光伏技术
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DOI
高影响因子
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
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2025
·
IF 4.1
Kun Liu,Long Ma,Pengpeng Du,Qiufang Liu,Yan Yan,Shaohua Wen,Yuan Dang,Qi Xue
Developing non-noble transition metal electrocatalysts with high catalytic activity and durability is essential for the oxygen evolution reaction (OER). Herein, novel nanoflower-like Se-NiCo 2 O 3 electrocatalyst (Se-NiCo 2 O 3 NFs) were fabricated via a hydrothermal refluxing and high-temperature calcination strategy. The electrochemical test results demonstrated that the 7 wt% Se-NiCo 2 O 3 NFs exhibit superior OER activity compared with the pristine NiCo 2 O 3 NFs, requiring an overpotential of 290 mV to reach a current density of 10 mA cm −2 along with a low Tafel slope of 56.89 mV dec −1 . Their superior and stable catalytic performance can be attributed to structure advantage and Se doping. The nanoflower structure provides a large specific surface area to expose abundant active sites. In addition, the doping of Se can further increase the electrical conductivity and regulate the electronic structure of metal atoms, promoting the adsorption of reaction intermediates such as OH ⁎ and enhancing the material's oxygen evolution capability. This work provides new insights and methodologies for designing efficient and stable Se-doped metal oxide electrocatalysts.
研究领域:
材料科学
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电化学
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DOI
高影响因子
Nanoscale
·
2025
·
IF 5.1
Yifen Wang,Wei Zhao,Bin Wang,Zhendong Song,Huan Yang,Fang Wang,Xiaohong Xu,Yang Liu
Chromium selenide (Cr–Se)-based low-dimensional materials have attracted significant attention in spintronics because of their diverse structure- and composition-dependent magnetic properties. While significant progress has been made in fabricating the Cr–Se family of nanomaterials through techniques like chemical vapor deposition, the synthesis of Cr–Se nanocrystals (NCs) via colloidal methods remains underexplored. In this work, we demonstrate the robust colloidal synthesis approach for producing Cr2Se3 and Cr3Se4 NCs with distinct morphologies by varying the Cr precursors and ligands. Cr–Se NCs can serve as templates for cation exchange (CE) reactions involving monovalent Cu+ and Ag+, divalent Zn2+ and Cd2+, and trivalent In3+, facilitating the creation of a diverse library of metal selenide NCs and nanoheterostructures. Our findings highlight how the outcomes of CE reactions are influenced by the structure of various Cr–Se phases. Furthermore, the magnetic properties of the as-synthesized Cr–Se NCs and their derivative CuCrSe2 were investigated. Our work provides a robust synthesis route for the Cr–Se class of magnetic nanomaterials and a platform for creating a diverse range of functional metal selenide NCs via CE reactions.
研究领域:
材料科学
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纳米技术
·
化学
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产品关联
DOI
PubMed
高影响因子
PHYSICS LETTERS A
·
2019
·
IF 2.087
Manman Yang,Hongyu Zhu,Wencai Yi,Shangsheng Li,Meihua Hu,Qiang Hu,Baoli Du,Xiaobing Liu,Taichao Su
In this paper, p-type thermoelectric material Te–Se solid solutions have been successfully prepared by the high-pressure technique. The thermal conductivity of Te was depressed sharply by Se alloying. An extremely low thermal conductivity ∼0.27 W m −1 K −1 was obtained for Te alloyed with 15 mol% Se, which near the theoretical minimum, κ min . The bipolar diffusion effect of Te was suppressed by Se alloying due to the increased band gap, which lead to enhanced Seebeck coefficient and depressed bipolar diffusion thermal conductivity under high temperature. The maximum figure of merit, ZT of 0.37 at 480 K was obtained for Te alloyed with 5 mol% Se, which is about twice higher than that of pristine Te.
研究领域:
材料科学
·
物理学
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产品关联
DOI
高影响因子
SOLAR ENERGY MATERIALS AND SOLAR CELLS
·
2014
·
IF 5.03
Wangen Zhao,Gang Wang,Qingwen Tian,Lijian Huang,Shang Gao,Daocheng Pan
Cu 2 CdSn(S,Se) 4 is an important candidate material for thin film solar cell absorber layers . In this work, low-cost Cu 2 CdSnS 4 nanocrytal thin film with a stannite structure has been successfully fabricated by a butyldithiocarbamate-based ethanol solution approach. The selenized Cu 2 CdSn(S,Se) 4 thin film shows large densely packed grains and has a suitable band gap value of 1.01 eV. The Cu 2 CdSn(S,Se) 4 thin film solar cell with a proof-of-concept power conversion efficiency of 3.1% was fabricated.
研究领域:
材料科学
·
能源技术
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DOI
高影响因子
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
·
2019
·Vol. 26
·期 21
·21609-21618
·
IF 2.914
Tan Guangcai,Mao Yi,Wang Hongyuan,Junaid Muhammad,Xu Nan
Biochar (BC) and activated carbon (AC) were both produced from corn straw. Biochar-supported zerovalent iron (BC-ZVI) and activated carbon-supported zerovalent iron (AC-ZVI) were synthesized and applied for Se(IV)/Se(VI) removal. The sorption capacity of BC-ZVI for Se(IV) and Se(VI) was reported at 62.52 and 35.39 mg g −1 , higher than that of AC-ZVI (56.02 and 33.24 mg g −1 ), respectively, due to its higher iron content and more positive charges. The spectroscopic analyses showed that Se(IV)/Se(VI) were reduced to Se(0)/Se(-II) of less toxicity and solubility. The effects of various factors such as pH, ionic strength, co-existing cations and anions, and natural organic matter (NOM) were also investigated. Ionic strength showed no significant effect on Se(IV)/Se(VI) removal, but pH was critical. The presence of NO 3 − and SO 4 2− did not cause obvious inhibition to the removal, while PO 4 3− inhibited the sorption capacity of BC-ZVI and AC-ZVI for Se(IV)/Se(VI) significantly. Common cations (K + , Ca 2+ , and Mg 2+ ) were found to slightly enhance the removal, while NOM significantly decreased the sorption capacity of BC-ZVI and AC-ZVI for Se(IV)/Se(VI). Besides, NOM showed stronger inhibition effect on AC-ZVI than that on BC-ZVI. These results indicated that BC-ZVI, compared with AC-ZVI, could be a promising sorbent to remove Se(IV)/Se(VI) due to its low cost and high efficiency.
研究领域:
环境科学
·
材料科学
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DOI
PubMed
高影响因子
EUROPEAN FOOD RESEARCH AND TECHNOLOGY
·
2020
·Vol. 246
·期 7
·1483-1494
·
IF 2.366
Zhu Jiangxiong,Du Mengke,Wu Meirong,Yue Pengxiang,Yang Xiufang,Wei Xinlin,Wang Yuanfeng
In this study, two novel mixed ACE-inhibiting peptides, namely Se-TAPep 1 and TAPep 1, were prepared and purified from selenium-enriched and common alkali-soluble proteins using a series of process, and then its physicochemical properties and oligopeptide sequence were analyzed. The results showed that Se-TAPep 1 and TAPep 1 could be successfully separated, but their ACE inhibitory activities were different (IC50 values were 13.39 mg/mL and 23.56 mg/mL, respectively), this may be related to the difference in selenium content. Further analysis of physicochemical properties showed that the protein or peptide fractions contained their characteristic absorption peaks and contained aromatic amino acids, while the apparent morphology was different, the presence of selenium could change the apparent morphology of protein or polypeptide fractions, arranging of selenium-enriched fractions more irregular. The amino acid composition analysis showed that the Pro content of the selenium-enriched fractions was higher than that of the ordinary component, whereas the oligopeptide sequence analysis showed that both LQPSLGFP derived from Se-TAPep 1 and AETGEIKGHY derived from TAPep 1 contained some characteristics of highly active ACE-inhibiting peptides, but the characteristics of LQPSLGFP were more conspicuous, which may be related to its molecular weight and source of mixed peptides. These findings indicated that the selenium-enriched tea mixed peptides had better potential uses than ordinary tea mixed peptides in the preparation of functional food.
研究领域:
食品科学
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生物化学
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药理学
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DOI
高影响因子
危险品化学品经营许可证（带存储）