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.

虽然我们的研究直到去年在金属纳米点阵列、金属纳米片、金属纳米电缆等方面取得了进展，但我们在2007年成功制备了一种创新的碳材料——介孔碳纳米树突（MCND）。每隔100-150 nm出现分支，其典型尺寸达100至数百μm。这些石墨多孔枝晶的壁为 2-3 层石墨烯片，是由乙炔银与银和碳发生放热分离反应而产生的爆炸性银蒸发而产生的。由于银填充的空间占原始枝晶的90％以上，因此残余碳细胞仅占据不到10％的空间，同时保持了图形结构。乙炔化物的枝晶形状，这意味着枝晶由与原始材料一样大的空房间组成。圆柱体的尺寸根据反应时间从20nm到50nm变化，但分支之间的长度始终在该范围内。 BET表面积的典型值为1, 500 m2/g 超级电容器获得的可用功率密度。 MCND电极超过了DOE给出的目标值。我们还发现，碳包裹的铜纳米线在吸附1个大气压下的氧气时，电导率增加了两倍，这种材料可以用作低温氧传感器。温度。

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