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负载型纳米NiO催化高氯酸铵热分解的DSC/TG-MS研究谈玲华1,2,李勤华3,杭祖圣3,2,居法银3,姜炜1,潘仁明3,李凤生11. 南京理工大学国家特种超细粉体工程技术研究中心2. 南京工程学院材料工程学院3. 南京理工大学化工学院摘 要:采用浸渍法制备出纳米NiO/MgO,运用X射线衍射(XRD),透射电子显微镜(TEM),X射线能谱仪(EDS)等对产物的物相和组成进行了表征,利用DSC/TG-MS研究了纳米NiO/MgO对高氯酸铵(AP)热分解的催化作用.结果表明,在纳米NiO/MgO的催化作用下,AP的热分解高温分解峰温度降低92.2℃,表观分解热增加0.376kJ/g,分解气相产物主要有NH3,H2O,O2,N2O,NO及含氯物质.纳米MgO的载体支撑作用,可防止NiO纳米粒子的团聚,增......
Substrate Temperature Dependent Properties of Cu Doped NiO Films Deposited by DC Reactive Magnetron SputteringYarraguntla Ashok Kumar Reddy1,Akepati Sivasankar Reddy2,Pamanji Sreedhara Reddy11..." name="ChDivSummary"><正>The NiO-Cu composite films were deposited on a glass substrate at various substrate temperatures by DC reactive magnetron sputtering technique.The effect of substrate......
Fabrication and characterization of NiO films for energetic nano-multilayers by direct current reactive sputteringYi-Chao Yan,Wei Shi,Hong-Chuan Jiang,Jie Xiong,Wan-Li ZhangState Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China摘 要:NiO films were fabricated by reactive direct current......
高Bs的NiZn铁氧体材料的研制 刘颖力1,张怀武1,许阳1,李伟1 (1.电子科技大学,微电子与固体电子学院,四川成都,610054) 摘要:以高纯度的NiO,ZnO,Fe2O3为原料,采用氧化物陶瓷工艺制备了高Bs NiZn铁氧体材料.通过岩崎B-H Analyzer SY-8232,Agilent 4285A和4284A多频LCR测试仪分析了NiO含量对材料的饱和磁感应强度,起始磁导率,Q值的影响;通过扫描电镜(SEM)观测样品的晶粒.结果表明,当NiO,ZnO,Fe2O3含量比为0.6:0.4:1,烧结温度为1140℃时,材料饱和磁感应强度大于480mT. 关键词:NiZn铁氧体; 饱和磁感应强度; NiO含量; 烧结温度; [全文内容正在添加中] ......
熔融碳酸盐燃料电池LiCoO2涂覆阴极的微观结构和性能 李箭1,肖建中1,蒲健1 (1.华中科技大学材料科学与工程学院塑性成形模拟及模具技术国家重点实验室,武汉,430074) 摘要:采用溶胶-凝胶技术,制备了LiCoO2涂覆的熔融碳酸盐燃料电池NiO阴极.研究了LiCoO2涂覆阴极的微观组织和在Li2CO3-K2CO3熔融碳酸盐中的溶解特性,并对其电化学性能进行了测试.结果表明LiCoO2涂层有效地降低了NiO在Li2CO3-K2CO3熔盐电解质中的溶解度和溶解速率,对单电池的性能有所改善,并在一定程度上抑制了Ni在电解质基板中的沉淀. 关键词:熔融碳酸盐燃料电池; NiO溶解; LiCoO2; 阴极; [全文内容正在添加中] ......
行业中具有非常广阔的应用前景.为使其更具商业竞争力,NCA锂电池的使用寿命至少需要延长至15年,这对现行技术而言是一个很大的挑战.因此,明确NCA锂电池在循环和储存过程中性能衰减机理是延长NCA动力电池使用寿命的关键.大量研究表明正极表面膜的形成,表面盐岩结构类NiO相的出现,显微裂纹的产生,表面导电碳基体的恶化等因素是NCA动力电池衰减的主要原因.通过常规原子掺杂,表面包覆等方法在一定程度上能有效抑制正极材料的恶化,延长锂离子电池的使用寿命.关键词:NCA正极材料;SEI膜;类NiO相;显微裂纹;改性措施;......
溶胶-凝胶燃烧合成制备NiO纳米颗粒的研究 于美1,刘建华1,李松梅1 (1.北京航空航天大学,材料科学与工程学院,北京,100083) 摘要:研究了以硝酸镍和柠檬酸为原料溶胶-凝胶自燃烧法制备氧化镍纳米颗粒的最佳工艺条件及配比.用热重分析(TG-DSC),扫描电镜(SEM)和X射线衍射(XRD)对反应物,反应过程,产物氧化镍等进行了表征.研究了溶胶-凝胶pH值,原料配比对产物的影响并对反应机理进行了初步探讨.通过调整柠檬酸与硝酸镍的配比来避免镍的出现.本方法设备简单,操作方便易行. 关键词:溶胶-凝胶自燃烧; 氧化镍纳米颗粒; 原料配比; [全文内容正在添加中] ......
PREPARATION OF MULTI-WALLED CARBON NANOTUBES USING NiO CATALYST SYNTHESIZED BY HYDROTHERMAL METHOD Y.J.Zhu1,X.M.Xue2,Y.L.Chen1,T.C.Kuang2,H.Y.Zhang3,S.H.Li1,Y.M.Chen3,C.Y.Wu1 (1.Department... and narrow range could be obtained at a high yield using that NiO/SiO.2 powder prepared by hydrothermal method as catalyst. Key words:hydrothermal method; dry method at atmosphere; carbon nanotube......
Plant-based synthesis of NiO nanoparticles using salvia macrosiphon Boiss extract and examination of their water treatmentZahra Sabouri1,Narges Fereydouni2,Alireza Akbari1,Hasan Ali... oxide nanoparticles(NiO-NPs) by the sol-gel method,which involved the use of salvia macrosiphon Boiss plant extract,Ni(NO3)2·6 H2 O as a capping agent,and a nickel precursor,respectively.The......
the phases formed during ball milling of Al–TiO2–NiO. For this purpose, a mixture of Al–TiO2–NiO with a molar ratio of 6:1:1 was used. Characterization of the milled powders by X-ray diffraction... confirmed that NiO was reduced by Al during ball milling, which consequently promoted TiO2 reduction and the formation of NiTi2. Al is capable of reducing NiO either during ball milling......