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PREPARATION AND PROPERTIES OF THE MICRO-POWDER PHASE AND A NEW PHASE OF AMMONIUM TETRAMOLYBDATES

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中国有色金属学会会刊：英文版 1997年第1期7卷 19-22页

作者： yin, zhoulan Chen, Qiyuan Zhang, Hengzhong Zhou, Guizhi Li, Yuangao Zhang, Pingmin Central South Univ of Technology Changsha China

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ＰＲＥＰＡＲＡＴＩＯＮＡＮＤＰＲＯＰＥＲＴＩＥＳＯＦＴＨＥＭＩＣＲＯＰＯＷＤＥＲＰＨＡＳＥＡＮＤＡＮＥＷＰＨＡＳＥＯＦＡＭＭＯＮＩＵＭＴＥＴＲＡＭＯＬＹＢＤＡＴＥＳ①ＹｉｎＺｈｏｕｌａｎ，ＣｈｅｎＱｉｙｕａｎ，ＺｈａｎｇＨｅｎｇｚｈｏｎｇ，Ｚｈｏｕ...

关键词： new phase of ammonium tetramolybdate micro powder phase of ammonium tetramolybdate phase transformation molybdenum

MASS TRANSFER TO LIQUID-LIQUID INTERFACE

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Acta Metallurgica Sinica(English Letters) 1996年第2期9卷 151-156页

作者： LI Xinhai yin zhoulan(Central-South University of Technology,Changsha 410083,China) Central-South Univ of Technology Changsha China

Experiments have been done on mass transfer to a liquid-liquid interface on which inert gas bubbles are *** simulate the pyrometallurgy system of melten slag-metal(or matte),aqueous solution-mercury(or zinc amalgam) system was *** mass transfer coefficients of indicator ions as a function of bubble parameters have been *** experimental results show satisfactory agreement with the mass transfer model proposed Previously.

关键词： mass transfer gas bubble liquid-liquid interface

MODEL OF CONDUCTIVITY IN DOPED SnO_(2)-BASE INERT ANODES FOR Al-ELECTROWINNING

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Transactions of Nonferrous Metals Society of China 1992年第3期2卷 59-63页

作者： yin zhoulan Yang Jianhong Wang Huazhang Zhao Qinsheng Liu Yexiang Gao Xiaohui Central South University of Technology Changsha 410083China

The variations of chemical bonding characteristics in doped SnO,-base inert anodes with various dopants are studied using CNDO/2 quantum chemical calculations.A new model of conductivity is *** is checked with literature data and our experimental *** dopants can be selected with the model to reduce the resistivity of said electrode effectively.

关键词： doped SnO_(2)-base inert anodes quantum chemistry conductivity dopants

Graphitic nanorings for super-long lifespan lithium-ion capacitors

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Nano Research 2020年第11期13卷 2909-2916页

作者： Guangchao Li zhoulan yin Yuqing Dai Bianzheng You Huajun Guo Zhixing Wang Guochun Yan Yong Liu Jiexi Wang School of Metallurgy and Environment&College of Chemistry and Chemical Engineering Central South UniversityChangsha410083China State Key Laboratory for Powder Metallurgy Central South UniversityChangsha410083China

Porous graphitic carbon nanorings(PGCNs)are proposed by smart catalytic graphitization of nano-sized graphene quantum dots(GQDs).The as-prepared PGCNs show unique ring-like morphology with diameter around 10 nm,and demonstrate extraordinary mesoporous structure,controllable graphitization degree and highly defective *** mechanism from GQDs to PGCNs is proven to be a dissolution-precipitation process,undergoing the procedure of amorphous carbon,intermediate phase,graphitic carbon nanorings and graphitic carbon ***,the relationship between particles size of GQDs precursor and graphitization degree of PGCNs products is *** unique microstructure implies PGCNs a broad prospect for energy storage *** applied as negative electrode materials in dual-carbon lithium-ion capacitors,high energy density(77.6 Wh·kg^(−1))and super long lifespan(89.5%retention after 40,000 cycles at 5.0 A·g^(−1))are *** energy density still maintains at 24.5 Wh·kg^(−1)even at the power density of 14.1 kW·kg^(−1),demonstrating excellent rate *** distinct microstructure of PGCNs together with the strategy for catalytic conversion from nanocarbon precursors to carbon nanorings opens a new window for carbon materials in electrochemical energy storage.

关键词： graphene quantum dots carbon nanorings catalytic graphitization defects lithium ion capacitors

THERMAL DECOMPOSITION OF THREE COMMERCIAL POLYPHASE AMMONIUM MOLYBDATE

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中国有色金属学会会刊：英文版 1996年第2期6卷 26-28页

作者： yin zhoulan Li Xinhai Zhou Guizhi Zhao Qinsheng Chen Shaoyi(Department of Chemistry, thentral South University of Technology, Changsha 410083) Department of Chemistry Central South University of Technology Changsha 410083 China

ＴＨＥＲＭＡＬＤＥＣＯＭＰＯＳＩＴＩＯＮＯＦＴＨＲＥＥＣＯＭＭＥＲＣＩＡＬＰＯＬＹＰＨＡＳＥＡＭＭＯＮＩＵＭＭＯＬＹＢＤＡＴＥＹｉｎＺｈｏｕｌａｎ；ＬｉＸｉｎｈａｉ；ＺｈｏｕＧｕｉｚｈｉ；ＺｈａｏＱｉｎｓｈｅｎｇ；Ｃ... 详细信息

ＴＨＥＲＭＡＬＤＥＣＯＭＰＯＳＩＴＩＯＮＯＦＴＨＲＥＥＣＯＭＭＥＲＣＩＡＬＰＯＬＹＰＨＡＳＥＡＭＭＯＮＩＵＭＭＯＬＹＢＤＡＴＥＹｉｎＺｈｏｕｌａｎ；ＬｉＸｉｎｈａｉ；ＺｈｏｕＧｕｉｚｈｉ；ＺｈａｏＱｉｎｓｈｅｎｇ；ＣｈｅｎＳｈａｏｙｉ（Ｄｅｐａｒｔｍ...

关键词： ammonium molybdate thermal decomposition metallic molybdenum

Shape-Controlled Synthesis of Mn_(3)O_(4) Nanocrystals and Their Catalysis of the Degradation of Methylene Blue

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Nano Research 2010年第4期3卷 235-243页

作者： Pengqu Zhang Yonggong Zhan Bingxin Cai Chenchun Hao Jun Wang Chunxiao Liu Zhoujun Meng zhoulan yin Qiyuan Chen College of Chemistry and Chemical Engineering Hunan UniversityChangsha 410082China College of Chemistry and Chemical Engineering Central South UniversityChangsha 410083China

Various sizes and shapes of Mn_(3)O_(4) nanocrystals have been prepared in a one-pot synthesis in extremely dilute solution by soft template self-assembly. To better control size and shape, the effects of varying the growth time, reaction temperature, surfactant, and manganese source were examined. The average size of octahedral Mn_(3)O_(4) crystallites was found to be related to the reaction time, while higher reaction temperature (150 °C) and the use of a cetyltrimethylammonium bromide/poly(vinylpyrrolidone) (CTAB/PVP) mixture allowed construction of a better-defined octahedral morphologies. When PVP or poly(ethylene oxide)-poly(propylene oxide) (P123) was used as template, large-scale agglomeration resulting in loss of the octahedral morphology occurred and crystallites with a quasi-spherical shape were obtained. The nano-octahedral crystallites were shown to be an efficient catalyst for the oxidation of methylene blue.

关键词： Mn_(3)O_(4) octahedron nanocrystals self-assembly methylene blue

EFEECT OF METALLIC CATIONS ON Si-O BONDS IN SILICATES

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中国有色金属学会会刊：英文版 1993年第3期3卷 1-6页

作者： yin, zhoulan Gao, XiaohuiCentral-South University of Technology, Changsha 410083, China

The effect of metallic cations on the Si-O(br) bond and the Si-O(ter) bond was studied with CNDO/2 MO calculations. The characteristics of them were discussed, which were found to vary with the bonding and coordi nation situation of oxygen as well as the effect of metallic cations on oxygen. The conclusions obtained may be well used in the fields of mineralogy, geochemistry, silicate materials, pyrometallurgy and so on.

关键词： silicates Si-O bonds metallic cations quantum chemistry

Thermal decomposition of ammonium molybdate mixture

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中国有色金属学会会刊：英文版 1994年第3期4卷 46-48,56页

作者： yin, zhoulan Li, Xinhai Zhao, Qinsheng Chen, Shaoyi(Department of Non-ferrous Metallurgy,Department of Chemistry,Central South University of Technology,Changsha 4100083)Liu, Guorong Wang, Siqing(Refractory Metal Branch,Baoji Non-ferrous Metal Works,Ba

ＴＨＥＲＭＡＬＤＥＣＯＭＰＯＳＩＴＩＯＮＯＦＡＭＭＯＮＩＵＭＭＯＬＹＢＤＡＴＥＭＩＸＴＵＲＥＹｉｎ，Ｚｈｏｕｌａｎ；Ｌｉ，Ｘｉｎｈａｉ；Ｚｈａｏ，Ｑｉｎｓｈｅｎｇ；Ｃｈｅｎ，Ｓｈａｏｙｉ（ＤｅｐａｒｔｍｅｎｔｏｆＮｏ... 详细信息

ＴＨＥＲＭＡＬＤＥＣＯＭＰＯＳＩＴＩＯＮＯＦＡＭＭＯＮＩＵＭＭＯＬＹＢＤＡＴＥＭＩＸＴＵＲＥＹｉｎ，Ｚｈｏｕｌａｎ；Ｌｉ，Ｘｉｎｈａｉ；Ｚｈａｏ，Ｑｉｎｓｈｅｎｇ；Ｃｈｅｎ，Ｓｈａｏｙｉ（ＤｅｐａｒｔｍｅｎｔｏｆＮｏｎ－ｆｅｒｒｏｕｓＭｅｔａｌｌｕｒ...

关键词： ammonium molybdate thermal decomposition XRD DTA TGA

低温碳热还原法合成Li3V2(PO4)3及其电化学性能

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稀有金属材料与工程 2008年第9期37卷 1652-1655页

作者：钟胜奎尹周澜刘洁群陈启元中南大学

利用V2O5·nH2O湿凝胶,LiOH·H2O、NH4H2PO4和C为原料,通过低温碳热还原法合成了锂离子电池正极材料Li3V2(PO4)3。考察了不同合成温度、时间对产物晶形结构、形貌和电化学性能的影响。结果表明,当合成温度和时间分别为550℃和12h时,所... 详细信息

利用V2O5·nH2O湿凝胶,LiOH·H2O、NH4H2PO4和C为原料,通过低温碳热还原法合成了锂离子电池正极材料Li3V2(PO4)3。考察了不同合成温度、时间对产物晶形结构、形貌和电化学性能的影响。结果表明,当合成温度和时间分别为550℃和12h时,所合成的Li3V2(PO4)3样品属于纯的单斜晶系,且颗粒分布均匀。该样品以0.2C充放电,首次放电容量为130mAh·g-1,循环30次后容量为124mAh·g-1。

关键词：锂离子电池正极材料 Li3V2(PO4)3 低温碳热还原法