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Journal of Materiomics 2024年第4期10卷 919-927页

作者： Bomin Feng Jun Chen Yifei Yang Mao Yang Hongbing Wang Changyin Zhong xiaochong zhao Yunxi Yao Institute of Materials China Academy of Engineering PhysicsJiangyou621908China

The sluggish reaction kinetics of oxygen evolution reaction(OER)and the high price of noble metal catalysts hinder the wide application of water electrolysis for hydrogen ***-entropy oxides(HEOs)with multi-components and high entropy stabilized structures have attracted great research interests due to their efficient and durable performance in electrolytic water splitting ***,the development of efficient HEO electrocatalysts are often hindered by the limited surface exposed active sites because high temperature is usually required to form a high entropy stabilized ***,a flaky high-entropy oxide with a spinel structure,(FeCoNiCrMn)_(3)O_(4),was synthesized by using the sacrificial layered carbon template in situ prepared by the volatile reaction between ammonium sulfate and molten ***-resolution TEM results show the as-prepared(FeCoNiCrMn)_(3)O_(4) flakes are composed of nanosized HEO *** nanosized(FeCoNiCrMn)_(3)O_(4) HEO electrocatalysts exhibit excellent OER activity,with an overpotential of 239 mV at 10 mA/cm^(2) and a Tafel slope of 52.4 mV/*** electrocatalyst has excellent *** at a high current density of 100 mA/cm^(2),the activity remains unchanged during the stability test for 24 *** results here shed a new light in the design and fabrication of highly efficient HEO electrocatalysts.

关键词： High entropy oxides Oxygen evolution reaction Spinel oxide Millard reaction Electrocatalyst

Fabrication of flexible α-MnO_2 nanowire membranes with superior mechanical strength

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Chinese Science Bulletin 2014年第13期59卷 1454-1458页

作者： Xingyue zhao xiaochong zhao Jianbao Li Xiangyun Deng Hong Lin State Key Laboratory of New Ceramics & Fine Processing School of Materials Science and Engineering Tsinghua University Science and Technology on Surface Physics and Chemistry Laboratory Key Laboratory of Ministry of Education for Advanced Materials in Tropical Island Resources Hainan University College of Physics and Electronic Information Tianjin Normal University

The Assembly of one-dimensional(1D)nanostructures such as nanowires/nanorods/nanotubes into twodimensional(2D)macrostructured films is attracting considerable research interest because of their unique properties and wide *** this study,flexible membranes were successfully fabricated using a-MnO2nanowires synthesized through a hydrothermal *** effects of thickness and post-annealing temperature on the mechanical properties of the membranes were investigated in ***-indentation measurements showed that the modulus of the as-prepared 11.75 lm-thick membrane reached5.765 GPa,and the modulus increased with the increasing post-annealing ***,the fabricated membranes with superior mechanical strength can have potential applications such as in photocatalysis,filtering,and supporting substrates.

关键词：机械强度二氧化锰纳米线制造膜退火温度机械性能水热法合成

The effect of dispersion of TiO_2 nanoparticles on preparation of flexible dye-sensitized photoanodes

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Science China(Physics,Mechanics & Astronomy) 2012年第7期55卷 1203-1209页

作者： zhao xiaochong LIN Hong LIU YiZhu LI Xin YANG Pan CHEN HuiYuan WANG Gang LI JianBao State Key Laboratory of New Ceramics&Fine Processing Department of Material Science and EngineeringTsinghua UniversityBeijing 100084China Pen-Tung Sah Micro-Nano Technology Research Center Xiamen UniversityXiamen 361005China Tianjin Institute of Power Sources Tianjin 300381China School of Mechanical Engineering Qinghai UniversityXining 810016China Key Laboratory for Hainan Advantage Resources and Applied Technology in Chemical Engineering Materials of Ministry of Education Hainan Provincial Key Laboratory of Research on Utilization of Si-Zr-TiMaterials and Chemical Engineering InstituteHainan University Haikou 570228China

Generally, nanoparticles are easy to aggregate due to their nano sizes, which influence the physical and chemical properties. In this work, a dispersion treatment of the TiO2 nanoparticles with different average sizes was employed to improve the disper- sion of TiO2 nanoparticles, in order to prepare flexible photoanodes for dye-sensitized solar cells （DSCs） with novel photovol- talc properties at a low temperature. The effects of dispersion treatment on the dispersion of TiO2 nanoparticles, including the viscosities of the binder-free TiO2 paste, the morphologies and textural properties of nanoparticle-TiO2 films, and the photo- voltaic properties of the flexible DSCs, were investigated. Flexible indium-tin oxide （ITO）-coated polyethylene naphthalate （PEN） substrates with sputter deposited Pt were employed as the transparent flexible counter electrodes. A short-circuit photo- current density of 9.62 mA·cm^-2, an open-circuit voltage of 0.757 V, a fill factor of 0.589 and an overall light-to-energy con- version efficiency of 4.29% for the flexible DSCs under AM1.5 illumination of 100 mW·cm^-2 were obtained with dispersion treatment. A 30.8% increment of the energy conversion efficiency for DSCs made by dispersion treatment was obtained com- pared with that made without dispersion treatment.

关键词： dispersion of nanoparticles dye-sensitized solar cells flexible textural properties photovoltaic properties

Lead iodide thin film crystallization control for stable solution-processed perovskite solar cells

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Lead iodide thin film crystallization control for stable sol...

Aluminum-Doped Zinc Oxide as Highly Stable Electron Collection Layer for Perovskite Solar Cells

第三届新型太阳能电池学术研讨会

作者： Lijun Yang Pan Yang xiaochong zhao Institute of Materials Chinese Academy of Engineering Physics

The PbI thin film crystallization control is prerequisite of high quality perovskite thin film for the sequentially solution-processed perovskite solar ***,an efficient-and-simple method is developed by adding halogen acid to improve perovskite thin-film quality and *** perovskite thin film with HCl additive improves the thin film uniformity,coverage and further enhances light absorbance over the entire range of visible *** fundemental mechanism on the PbI crystallization improvement can be that adding halogen acid can transform the needle-like into hexagonal plate *** inducing HCl into perovskite materials,the stability of device can be improved remarkably,which is a more attractive feature for organic-inorganic hybrid perovskite photovoltaic applications.

关键词： Perovskite Solar Cell Stability Coverage Absorption

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Aluminum-Doped Zinc Oxide as Highly Stable Electron Collecti...

玄武岩纤维掺量对大空隙沥青混合料动态模量及相位角的影响

第三届新型太阳能电池学术研讨会

作者： Xingyue zhao Heping Shen Ye Zhang Xin Li xiaochong zhao Meiqian Tai Jingfeng Li Jianbao Li Xin Li Hong Lin State Key Laboratory of New Ceramics and Fine Processing School of Materials Science and EngineeringTsinghua University Science and Technology on Surface Physics and Chemistry Laboratory Key Laboratory of Ministry of Education for Advanced Materials in Tropical Island Resources Hainan University Pen-Tung Sah Institute of Micro-Nano Science and Technology Xiamen University

Although low-temperature,solution-processed zinc oxide(ZnO) has been widely adopted as the electron collection layer(ECL) in perovskite solar cells(PSCs) because of its simple synthesis and excellent electrical properties such as high charge mobility,the thermal stability of the perovskite films deposited atop ZnO layer remains as a major ***,we addressed this problem by employing aluminum-doped zinc oxide(AZO) as the ECL and obtained extraordinarily thermally stable perovskite *** improvement of the thermal stability was ascribed to diminish of the Lewis acid–base chemical reaction between perovskite and ***,the outstanding transmittance and conductivity also render AZO layer as an ideal candidate for transparent conductive electrodes,which enables a simplified cell structure featuring glass/AZO/perovskite/Spiro-OMe TAD/*** of the perovskite layer leads to an excellent and repeatable photovoltaic performance,with the champion cell exhibiting an open-circuit voltage(Voc) of 0.94 V,a short-circuit current(Jsc) of 20.2 m A cm,a fill factor(FF) of 0.67,and an overall power conversion efficiency(PCE) of 12.6% under standard 1 sun *** was also revealed by steady-state and time-resolved photoluminescence that the AZO/perovskite interface resulted in less quenching than that between perovskite and hole transport material.

关键词： Solar cell perovskite zinc oxide aluminum doping thermally stable

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硅酸盐通报 2020年第4期39卷 1331-1342页

作者：赵小崇高淑玲何世钦河北工业大学土木与交通工程学院天津300401 北方工业大学土木工程学院北京100144

为了研究温度、频率、玄武岩纤维掺量对大空隙沥青混合料动态模量和相位角的影响,采用单轴压缩动态模量实验研究玄武岩纤维掺量分别为0%、0.1%、0.3%的大空隙沥青混合料在5种温度及6种频率下的动态模量值及相位角。结果表明,大空隙沥青... 详细信息

为了研究温度、频率、玄武岩纤维掺量对大空隙沥青混合料动态模量和相位角的影响,采用单轴压缩动态模量实验研究玄武岩纤维掺量分别为0%、0.1%、0.3%的大空隙沥青混合料在5种温度及6种频率下的动态模量值及相位角。结果表明,大空隙沥青混合料的动态模量值随温度升高而降低,随荷载频率增加而增加。大空隙沥青混合料相位角在每个频率下都随温度的增加先增大后减小。在高温条件下,随着荷载频率的增加,相位角也随之变大;温度低于35℃时,随着荷载频率的增加,相位角随之减小。相比未掺加玄武岩纤维的大空隙沥青混合料,纤维掺量为0.1%、0.3%时,在低温(-10℃)下,其动态模量值更小,相位角更大,具有更好的低温抗裂性能;在高温(50℃)时,动态模量值更大,相位角更小,具有更好的高温稳定性。特别是纤维掺量为0.3%时,低温抗裂性和高温稳定性更好。结合时温等效原理,通过Origin软件,采用西格摩得模型对实验结果进行非线性拟合,拟合结果表明掺加0.3%玄武岩纤维可以更好地提高大空隙沥青混合料的高温稳定性和低温抗裂性,为路面结构设计提供有价值的参考依据。

关键词：大空隙沥青混合料玄武岩纤维动态模量相位角主曲线

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纳米氧化物太阳能电池研究进展

硅酸盐学报 2011年第7期39卷 1061-1066页

作者：林红焦星剑赵晓冲郝锋李建保清华大学材料科学与工程系新型陶瓷与精细工艺国家重点实验室北京100084

介绍了新型低成本纳米氧化物染料敏化太阳能电池的优势特点及基本原理。纳米氧化物材料在染料敏化太阳能电池的光阳极和电解质中有着特殊的应用,在电池中起到了非常关键的作用。围绕电池中光阳极和电解质所用的纳米氧化物材料,结合清华... 详细信息

介绍了新型低成本纳米氧化物染料敏化太阳能电池的优势特点及基本原理。纳米氧化物材料在染料敏化太阳能电池的光阳极和电解质中有着特殊的应用,在电池中起到了非常关键的作用。围绕电池中光阳极和电解质所用的纳米氧化物材料,结合清华大学科研实例,综述了光阳极用纳米氧化物的制备方法及性能,分析了电子传递和复合对电池性能的影响,以及纳米材料的包覆对减少电子复合的作用,指出一维纳米氧化物材料可以形成光阳极中的电荷通道。对于低温纳米氧化物薄膜成膜方法及其在柔性太阳能电池中的应用也做了详细评述。另外,还介绍了纳米氧化物在准固态太阳能电池中的应用。

关键词：染料敏化太阳能电池纳米氧化物低温一维电子传递和复合

纳米金掺杂二氧化钛复合材料制备及表面等离子体效应

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硅酸盐通报 2020年第11期39卷 3697-3700,3708页

作者：李杭南辉赵晓冲青海大学机械工程学院西宁810016 中国工程物理研究院材料研究所绵阳621908

当纳米金颗粒受到可见光和近红外光波照射时,其表面导带的自由电子会以一定的频率局限在纳米金颗粒周围振荡,并在其表面激发较强的等离子体共振效应。本文基于纳米金颗粒的表面等离子体效应,设计了一种纳米金颗粒掺杂二氧化钛电荷传输... 详细信息

当纳米金颗粒受到可见光和近红外光波照射时,其表面导带的自由电子会以一定的频率局限在纳米金颗粒周围振荡,并在其表面激发较强的等离子体共振效应。本文基于纳米金颗粒的表面等离子体效应,设计了一种纳米金颗粒掺杂二氧化钛电荷传输层的器件结构(FTO/TiO2 dense layer(d-TiO2)/Au@TiO2/amorphous TiO2(a-TiO2)/CH 3 NH3PbI3/spiro/Au)。在该结构中,采用致密的非晶TiO2和介孔层TiO2能够缩短光电子的迁移距离,降低电子-空穴的复合概率,提高器件的光电性能。纳米金掺杂二氧化钛的表面等离子体效应,促进了光电子的吸收,提高了复合材料的吸光系数和光电性能。

关键词：纳米金 TiO2 钙钛矿表面等离子体效应吸光系数

截齿镍基钴包碳化钨激光熔覆涂层磨损性能研究

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矿冶工程 2015年第1期35卷 116-119页

作者：杨盼王琪马丹丹赵晓冲表面物理与化学重点实验室四川绵阳621907 中国矿业大学(北京)材料系北京100083 安徽矿业职业技术学院机械工程系安徽淮北235000

为解决掘进机截齿的磨损失效问题,在截齿表面激光熔覆高耐磨的镍基(Ni)钴包碳化钨(WC-Co)涂层。以42Cr Mo钢为基体,Ni60B商用粉末为粘结相,纳米WC-Co为增强相,激光熔覆获得WC-Co陶瓷颗粒增强Ni基复合涂层。利用MM200环块磨损试验机,测... 详细信息

为解决掘进机截齿的磨损失效问题,在截齿表面激光熔覆高耐磨的镍基(Ni)钴包碳化钨(WC-Co)涂层。以42Cr Mo钢为基体,Ni60B商用粉末为粘结相,纳米WC-Co为增强相,激光熔覆获得WC-Co陶瓷颗粒增强Ni基复合涂层。利用MM200环块磨损试验机,测试熔覆涂层在干摩擦和水摩擦环境下的耐磨性能。采用显微硬度计测量涂层磨损前后的表面硬度,电子扫描显微镜(SEM)、能谱仪(EDS)等观察熔覆涂层磨损前后的显微组织结构和成分变化。结果表明,激光熔覆涂层可以提高截齿的耐磨性能,磨损后熔覆层中的细小析出相起到了弥散强化作用,熔覆层的表面显微硬度提高了10%。相同磨损条件下,干磨损涂层硬度高于水磨损涂层硬度。

关键词：磨损激光熔覆钴包碳化钨涂层

生长助剂对微纳米级二氧化钛颗粒形貌和光吸收性能的影响

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半导体光电 2016年第6期37卷 838-841页

作者：程禹赵晓冲杨盼王刚南辉王亚萍青海大学化工学院西宁810016 表面物理与化学重点实验室四川绵阳621907 青海大学机械学院西宁810016

以钛酸丁酯为钛源,氟化氢(HF)为形貌控制剂,溶剂(乙酸乙酯、乙酸和异丙醇)为生长助剂,通过溶剂热法合成了不同形貌的二氧化钛(TiO_2)。利用X射线衍射谱(XRD)分析样品的物相,扫描电子显微镜(SEM)表征TiO_2颗粒的形貌,氮气吸附-脱附实验... 详细信息

以钛酸丁酯为钛源,氟化氢(HF)为形貌控制剂,溶剂(乙酸乙酯、乙酸和异丙醇)为生长助剂,通过溶剂热法合成了不同形貌的二氧化钛(TiO_2)。利用X射线衍射谱(XRD)分析样品的物相,扫描电子显微镜(SEM)表征TiO_2颗粒的形貌,氮气吸附-脱附实验测量样品的比表面积,紫外可见吸收光谱测试样品的光吸收能力。结果表明:乙酸乙酯、乙酸和异丙醇作为生长助剂时,相应地得到球形、片状和比表面积高达155.58m2·g^(-1)的花状结构。乙酸乙酯对样品形貌的影响大于HF。乙酸和异丙醇对HF具有协同作用,不同形貌的TiO_2颗粒的紫外光吸收的强弱顺序为醇-TiO_2,酸-TiO_2,酯-TiO_2。

关键词： TiO2 生长助剂形貌光吸收