等离子喷涂γ—Al2O3和α—Al2O3涂层的性能和结构

用优选的喷焰参数制备了含有９９．５％以上的γ－Ａｌ２Ｏ３的喷涂态涂层，该涂层具有０．１－１μｍ直径的颗粒，其薄层厚度为１－４μｍ。用同样的喷焰条件，但缓慢地在基体上移动，产生了含有α－Ａｌ２Ｏ３涂层。在每个喷焰的喷道中观察到三种类型的显微结构：类型Ｉ，在较下面的区域，认为已形成了γ－Ａｌ２Ｏ３晶核，并且由于喷焰和涂层的热量而转变成α－Ａｌ２Ｏ３相；类型Ⅲ；在类型Ｉ上连，形成了α－Ａｌ２Ｏ３晶核，在     

利用涂层提高Si3N4陶瓷材料的抗氧化性能

采用ｓｏｌ－ｇｅｌ的方法在热压Ｓｉ３Ｎ４陶瓷材料的表面涂上一层ＳｉＯ２涂层或３Ａｌ２Ｏ３．２ＳｉＯ２涂层，并用Ｘ光电子能谱的方法检测了涂层后的Ｓｉ３Ｎ４陶瓷材料表面。     

SnO_2／p接触特性对a－Si太阳电池填充因子的影响

用ＰＥＣＶＤ方法制备出高电导率（～０．２ｓｃｍ－１）、宽带隙（～２．２ｅＶ）的Ｐ型微晶化硅碳合金（ｐ－μｃ－ＳｉＣ：Ｈ）薄膜材料。利用ｐ－μＣ－ＳｉＣ：Ｈ／ｐ－ａ－Ｓｉ：Ｈ复合结构做ａ－Ｓｉ太阳电池的窗口材料，明显改善了ＳｎＯ２／ｐ之间的接触特性，从而使１０ｃｍ×１０ｃｍ单结集成型电池的填充因子从０．７０以下提高到０．７２。     

颗粒涂层法制备莫来石瓷

本文叙述了以α－Ａｌ２Ｏ３（平均粒径〈０．５μｍ）、正硅酸乙酯（ＴＥＯＳ）为原料，通过采用颗粒涂层法在α－Ａｌ２Ｏ３上涂覆ＳｉＯ３形成涂层复合粉料而制备的莫来石瓷。试验中用氟硅酸钾法测定了复合粉料的二氧化硅含量，并对涂层粉料的涂层质量进行了ＴＥＭ观察、ξ电位测量、ＸＲＤ分析和ＴＧ－ＤＴＡ分析，对涂层粉料烧结成的莫来瓷进行体积密度和开口气孔率的测定，利用ＸＲＤ分析了物相组成，并用ＳＥＭ观察了试样的显     

组成和工艺对Al2O3—TiB2复相陶瓷性能的影响

研究了ＴｉＢ２含量及烧结工艺对Ａｌ２Ｏ３－ＴｉＢ２复相陶瓷性能的影响，发现随着ＴｉＢ２加入量的增加，Ａｌ２Ｏ３－ＴｉＢ２复相陶瓷的致密化困难，Ａｌ２Ｏ３－ＴｉＢ２复相陶瓷的强度在ＴｉＢ２加入的体积分数为２０％时最高，而材料的断裂韧性则在ＴｉＢ２体积分数为３０％时最高。     

Al2O3—SiC复合材料的试验研究

在Ａｌ２Ｏ３－ＺｒＯ２基础上，添加１０％－３０％ＳｉＣ，结果表明：其复合材料的抗弯强度变化不大，抗热震性临界温差可提高１５．８％－２６．２％，但高温电阻率有些降低。     

籽晶法制备低电压压敏电阻器

介绍了对ＺｎＯ－Ｂｉ２Ｏ３－Ｓｂ２Ｏ３和ＺｎＯ－Ｂｉ２Ｏ３－ＴｉＯ２系分别进行的掺杂籽晶的试验研究，研究了籽晶加入对两系统各性能的影响规律；制备了性能优良，压敏电压低（１０Ｖ／ｍｍ）的压敏陶瓷。     

400cm2 a-Si/a-Si叠层太阳电池的研究

以全部国产化装备和工业用原材料，以简单铝背电极制备出初始效率为８．２８％，经室外阳光照射一年后稳定效率为７．３５％，面积为２０ｃｍ×２０ｃｍ，有效面积为３６０ｃｍ２ａ－Ｓｉ／ａ－Ｓｉ叠层太阳电池。主要制备技术措施：（１）ＴＣＯ／ｐ界面接触特性的改善；（２）μｃ－ＳｉＣ∶Ｈ／ａ－ＳｉＣ∶Ｈ复合窗口层技术；（３）ｐ／ｉ界面Ｈ处理；（４）高质量本征ａ－Ｓｉ∶Ｈ材料；（５）优良的ｎ１／ｐ２隧道结；（６）最佳电池结构设计等。     

添加ZrO2对Al2O3—TiB2复相陶瓷性能的影响

论述了在Ａｌ２Ｏ３－ＴｉＢ２复相陶瓷的基础上添加ＺｒＯ２对Ａｌ２Ｏ３－ＴｉＢ２复相陶瓷性能的影响；初步探讨了添加ＺｒＯ２后对材料强韧化机理和磨损机理的影响。研究表明，在Ａｌ２Ｏ３－ＴｉＢ２复相陶瓷中加入ＺｒＯ２后，由于两种增韧机制的协同作用，材料强度和韧性明显提高，同时，ＺｒＯ２的相变增韧作用有利于材料抗磨损性能的提高。     

活性Si3N4粉末的研制

研究了碳热还原法合成Ｓｉ３Ｎ４粉末中的原料配比、Ｎ２流量、反应压力、反应温度和时间等因素对氮化的影响，获得了较佳的工艺参数，研制出氮含量大于３７％和平均粒径小于１．５μｍ的活性α－Ｓｉ３Ｎ４粉末。     

Investigation of synthesized Fe2O3 and CuO–Fe2O3 for pure hydrogen production by chemical-loop reforming of methanol in a micro-channel reactor

Production of pure hydrogen from methanol was investigated by the chemical looping method in the presence of 0.1CuO–Fe2O3 and Fe2O3 at 350 °C in a micro-channel reactor. The x-ray diffraction and atomic absorption spectroscopy analysis confirmed the formation phases and the values of Fe2O3 and CuO.Considering the formation of coke due to methanol conversion reactions and as a result, the production of CO together with H2, the time of the reduction step (2 hours-11 min) has been controlled to minimize coke deposition. The results show that coke deposition was prevented by optimizing the reduction time to 11 min for both samples and the pure H2 flow was generated for fuel cell applications, which was 231.1% higher for the 0.1CuO–Fe2O3. Although the results show that improving the Cu content and the reduction temperature increases the reduction degree of the catalyst and yield of H2, but coke deposition cannot be prevented.     

射频反应溅射CdIn2O4膜制备过程中氧浓度对光学性质的影响

采用射频反应溅射方法在Ａｒ＋Ｏ２气氛中制备了ＣｄＩｎ２Ｏ４薄膜，报道了在没氧浓度下该膜的透射率和随波长的变化关系。发现氧浓度越高，膜透射率赵低，而消光系数１、折射率相应地越大。对这些结果从ＣＩＯ膜的晶格常数、载流子浓度等角度进行了理论分析。     

WO_3对于V_2O_5/TiO_2脱硝催化剂的抗中毒作用

实验室制备了V2O5/TiO2以及添加了不同含量WO3的催化剂,并在催化剂上负载碱金属氧化物K2O模拟中毒.在SCR活性试验台上研究不同含量K2O对催化剂脱硝活性,N2O生成率和SO2的氧化率的影响.结果发现,K2O对于催化剂的毒性较强,随着添加量的增大,NO脱除率急剧下降,SO2的氧化率大大提高.K2O通过与V2O5的活性酸性位结合,使催化剂中有效活性位数量大为降低,导致脱硝活性下降.添加WO3后,K2O对催化剂的中毒作用明显减弱,源于WO3较强的Bronsted酸性对催化剂性能的促进作用.综合考虑认为在V2O5/TiO2催化剂上添加10%左右的WO3抗中毒性能较好.     

Electrochemical properties of novel O3-NaCu1/9Ni2/9Fe1/3Mn1/3O2 as cathode material for sodium-ion batteries

由于钠具有资源丰富和成本低廉的优势,钠离子电池再次受到科学界和工业界的广泛关注。发展低成本、性能优异的正极材料对于钠离子电池至关重要。本文通过向O3-Na0.90[Cu0.22Fe0.30Mn0.48]O2材料中引入容易变价的Ni2+得到一种不含Mn3+的钠离子电池新型正极材料O3-NaCu1/9Ni2/9Fe1/3Mn1/3O2,该材料具有127 mA•h/g可逆比容量和3.1 V平均放电电压。由该正极与硬碳球负极组装成全电池具有248 W•h/kg的理论能量密度,高达93%的能量转化效率和优异的循环性能。     

CdIn2O4薄膜的AES分析

利用ＡＥＳ方法研究了ＣｄＩｎ２Ｏ４膜的成分分布。膜中的Ｃｄ、Ｉｎ和Ｏ成份随Ｏ浓度的变化而变化，并对膜的电学性质有重要影响。     

Sol–gel derived nanocrystalline CeO2–TiO2 coatings for electrochromic windows

Mixed CeO₂–TiO₂ coatings synthesized by sol–gel spin coating process using mixed organic–inorganic Ti(OC₃H₇)₄ and CeCl₃·7H₂O precursors with different Ce/Ti mole ratios were investigated by a wide range of characterization techniques. The attempts were directed towards achieving coatings with high transparency in the visible region and good electrochemical properties. Elucidation of the structural and optical features of the films yielded information on the aspects relevant to their usage in transmissive electrochromic devices. The films have been found to exhibit properties for counter electrode in electrochromic smart windows in which they are able to retain their transparency under charge insertion, high enough for practical uses. The high optical modulation and fastest switching for WO₃ film in the device configuration with the Ce/Ti (1:1) film is interpreted in terms of conducive microstructural changes induced by addition of TiO₂ in an amount equivalent to CeO₂.     

First-principles investigation of electronic and optical properties of Fe doped in CsBrO3 for enhanced photocatalytic hydrogen production

Self-consistent ab initio calculations carried out using full potential augmented plane wave (FP-LAPW) method were performed to study the electronic, optical and photocatalytic properties of CsBrO₃ and Fe doped CsBrO₃. Ground state and formation energy for CsBrO₃-perovskite are calculated and analyzed. The magnetic moment of Cs, Br, Fe and O are calculated in CsBrO3 and CsBr_0.34Fe_0.66O₃. The band structure, total and partial density of states (DOS) diagrams are discussed.The CsBrO₃ have semiconductor character with a wide direct gap. The value of gap energy is 4.24 eV of CsBrO₃. Fe doped in CsBrO₃ lead to band gap narrowing 1.02 eV for spin up and 1.434 eV for spin dn , which enhances the visible light catalytic activity. The conduction band minimum (CBM) and valence band maximum (VBM) potentials vs. normal hydrogen electrode (NHE) are calculated and analyzed. The general profiles of the optical spectra and the optical properties, including the real and imaginary part of dielectric function, reflectivity, absorption and optical conductivity are discussed. Our results predict that Fe doped CsBrO₃ is a promising visible light photo-catalyst for hydrogen production by water splitting.     

TiO2超声光催化降解荧光增白剂-CBW

均匀沉淀法制备了纳米TiO2，TEM，xRD分别进行了表征。以该纳米TiO2为光催化剂，对超声光催化降解荧光增白剂CBw的反应进行了研究。结果表明，超声波的引入提高了纳米TiO2光催化降解CBw的反应效率；反应符合Langmuir-Hinshelwood动力学模型，表观反应速率常数k1为0．0266min^-1；反应受超声波功率的影响；溶液中添加少量的Fe^3 ，H3PW12O40、H2O2均能够明显地强化CBw的降解反应。     

NiNb2O6光电极的还原和表面处理

研究了铌酸镍（ＮｉＮｂ２Ｏ６）半导体电极的还原条件及在光电化学太阳电池中光电解水制取氢时的表面特性。对单晶和多晶压片电极表面逐点研究后表明，其光电化学性质是不均匀的。探讨了机械抛光，化学抛光等不同表面处理方法对电极特性的影响。     

Fe2O3为载氧体的煤/秸秆化学链燃烧循环特性研究

对煤、秸秆与Fe2O3以不同质量掺混比混合后化学链燃烧过程中载氧体还原/再生的多循环反应特性进行了研究,重点分析了固体燃料带入的灰分对化学链反应速率的影响以及秸秆的掺入对化学链反应的改善.结果表明：载氧体Fe2O3质量掺混比的增大有利于化学链反应的进行,燃烧起始反应温度降低;Fe2O3作为载氧体受灰分积累的影响较大,其可持续循环能力较差;煤中掺入秸秆改善了煤的化学链燃烧特性,提高了燃烧反应速率和载氧体的再生反应速率.