Preparation and Structural Studies of Metal/Carbon Nano Composites using Metal Acetylides

金属乙炔金属/碳纳米复合材料的制备及结构研究

• 批准号: 17310062
• 负责人: NISHI Nobuyuki
• 金额: $ 9.84万
• 依托单位: Institute for Molecular Science
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2005
• 资助国家: 日本
• 起止时间: 2005 至 2007
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-17310062/
• 关键词: Metal; Carbon hybrid nanostructure; Carbon Nano Dendrite; Mesoporous Carbon; Supper Capacitor; Carbon Electrodes for Batteries; Adsorption Isotherm; 微粒子; 酸素センサー; ナノ構造物性; 電気伝導度; 酸素吸着; ショットキーバリアー; ナノ材料創成; クラスター; 金属ナノシート; フォトリソグラフ

While our study achieved the progress until the last year in producing such as metal nano-dot arrays, metal nanosheets, metal-nanocables, we have succeeded in preparing an innovative carbon material, Mesoporous Carbon Nano Dendrites (MCND) in 2007. The carbon dendrite shows branching at every 100-150 nm and its typical size amounts to 100 to several 100μm. The body is composed of numerous meso-porous and micro-porous cells with the walls of 2-3 layers of graphene sheets. These graphitic porous dendrites are produced by the explosive silver vaporization due to the exothermic segregation reaction of silver acetylides to silver and arbons. The explosive silver boiling heats the carbon up to produce the graphitic structure. Since the space filled by the silver amounts to more than 90% of the original dendrite, the residual carbon cells just occupy the space less than 10% with keeping the dendrite shape of the acetylide. This means that the dendrites are composed of empty rooms as big as the original materials. The size of the cylinder varies from 20nm to 50nm depending on the reaction time, but the length between the branches is always in the range of 100-150nm. A typical value of the BET surface area is as wide as 1, 500 m2/g. The available power density obtained by a super capacitor with the MCND electrodes exceeds the target value given by DOE.We also discover that the electric conductivity of the copper nanowires sheathed in carbon increases upon the adsorption of oxygen at 1 atm as big as two times. This material can be used as an oxygen sensor at low temperatures.

虽然我们的研究取得了进步，直到最后一年生产等金属纳米点阵列，金属纳米片，金属纳米材料，但我们成功地准备了一种创新的碳材料，介孔碳纳米树突（MCND）在2007年。碳树突在每个100-150 nm和其典型尺寸上显示了分支机构。该身体由众多的中孔和微孔细胞组成，并由2-3层石墨烯片层组成。这些图形多孔的树突是由于银乙酰基对银和轴突的放热隔离反应而产生的。爆炸性银沸腾加热碳以产生图形结构。由于银填充的空间量超过原始树突的90％以上，因此残留的碳细胞仅占用小于10％的空间，并保持乙酰化的树突形状。这意味着树突由与原始材料一样大的空房间组成。圆柱体的大小从20nm到50nm，具体取决于反应时间，但分支之间的长度始终在100-150nm的范围内。 BET表面积的典型值高达1，500 m2/g。具有MCND电子的超级电容器获得的可用功率密度超过了DOE给出的目标值。我们还发现，在1 ATM上添加氧气时，碳中铜纳米线的电导率增加了两次。该材料可以在低温下用作氧气传感器。

项目成果

Structure of[(C0_2)_n(H_20)_m](n=1-4, m=1, 2) cluster anions, Infrared photodissociation spectroscopy

[(C0_2)_n(H_20)_m](n=1-4, m=1, 2)簇阴离子结构，红外光解光谱

• 发表时间: 2005
• 期刊: J. Chem. Phys. 122
• 作者: Azusa Muraoka;Yoshiya Inokuchi;Nobuyuki Nishi;Takashi Nagata
• 通讯作者: Takashi Nagata

"Increased Electric Conductance through Physisorbed Oxygen on Copper Nanocables Sheathed in Carbon"

“通过物理吸附氧来提高碳护套铜纳米电缆的电导率”

• 发表时间: 2008
• 期刊: Journal of American Chemical Society 130
• 作者: 十代 健;沼尾 茂則;古谷 亜理;西条 純一;西 信之
• 通讯作者: 西 信之

Structure of [(CO_2)_n(H_2O)_m]-(n=1-4,m=1,2)cluster anions,1.Infrared photodissociation spectroscopy

[(CO_2)_n(H_2O)_m]-(n=1-4,m=1,2)簇阴离子结构,1.红外光解光谱

• 发表时间: 2005
• 期刊: Journal of Chemical Physics 122
• 作者: K.WATANABE;A.KOKAKI;H.HORINO;I.I.RZEZNICKA;K.TAKAHASHI;N.NISHI;T.MATSUSHIMA;Kazuo Watanabe;Azusa Muraoka
• 通讯作者: Azusa Muraoka

Structure and Functionality of Metal Acetylides : Nanocrystals Nanowires, Nanocrystals, Nanostructures, Mount Nanosheets, Nanosponge, and Hollow Graphitic Polyhedrons

金属乙炔的结构和功能：纳米晶体纳米线、纳米晶体、纳米结构、纳米片、纳米海绵和空心石墨多面体

• 发表时间: 2007
• 作者: Ken Judai;Shigenori Numao;Nobuyuki Nishi;西 信之;Nobuyuki Nishi
• 通讯作者: Nobuyuki Nishi

One dimensional array formation by photo or thermal reactions of metal ethynyl chain crystals

金属乙炔链晶体光或热反应形成一维阵列

• 发表时间: 2006
• 作者: Junichi Nishijo;Nobuyuki Nishi
• 通讯作者: Nobuyuki Nishi