Scanning tunnel microscope based on an ESO-03 Auger spectrometer and its application to studying highly dispersed carbon materials

1994 ◽  
Vol 34 (6) ◽  
pp. 956-959 ◽  
Author(s):  
Sh. K. Shaikhutdinov ◽  
D. I. Kochubey
Keyword(s):  
Carbon Materials ◽  
Scanning Tunnel Microscope ◽  
Highly Dispersed

Anchoring a Co/2-methylimidazole complex on ion-exchange resin and its transformation to Co/N-doped carbon as an electrocatalyst for the ORR

2019 ◽  
Vol 9 (3) ◽  
pp. 578-582 ◽  
Author(s):  
Yexin Zhu ◽  
Koji Miyake ◽  
Yasuhiro Shu ◽  
Atsushi Gabe ◽  
Yuichiro Hirota ◽  
...  
Keyword(s):  
Ion Exchange ◽  
Carbon Materials ◽  
Exchange Resin ◽  
Ion Exchange Resin ◽  
Simple Method ◽  
Highly Dispersed

A simple method was developed to obtain carbon materials with highly dispersed Co/N as electrocatalysts for ORR.

scholarly journals ХАРАКТЕРИЗАЦИЯ УГЛЕРОДНЫХ ЭЛЕКТРОДОВ С НАНОЧАСТИЦАМИ ГИДРОКСИД НИКЕЛЯ ДЛЯ СУПЕРКОНДЕНСАТОРОВ (CHARACTERIZATION OF CARBON ELECTRODES WITH NANOPARTICLES OF NICKEL HYDROXIDE FOR SUPERCONDENSERS)

2020 ◽  
Author(s):  
Shyryn Nurbolat ◽  
Zhanar Kalkozova ◽  
Khabibulla Abdullin
Keyword(s):  
Cyclic Voltammetry ◽  
Nickel Hydroxide ◽  
Polyvinylidene Fluoride ◽  
Carbon Materials ◽  
Specific Capacity ◽  
Carbon Electrodes ◽  
Composite Electrodes ◽  
Galvanostatic Charge ◽  
Highly Dispersed ◽  
Charge Discharge

Composite electrodes for supercapacitors have been obtained, consisting of a matrix of highly dispersed carbon materials: microcrystalline graphite and multi-walled carbon nanotubes, also a filler of nanoparticles of nickel hydroxide. Β-Co (OH) 2 and β-Ni (OH) 2 nanopowders were obtained by chemical deposition from solution. To create the electrodes, a polyvinylidene fluoride polymer in the form of a powder was used as a bonding material. The main technological stages of the manufacture of electrodes were determined, the parameters of the obtained structures were measured by the method of cyclic voltammetry and galvanostatic charge-discharge. For the manufacture of carbon electrodes, the optimal ratios of highly dispersed carbon materials, a binder polymer and a solvent have been determined to create mechanically strong layers with high conductivity and capacity. The technique of creating capacitor structures and measuring the capacitance of the obtained electrochemical capacitors has been worked out. Capacitors made of highly dispersed carbon materials showed typical rectangular curves of cyclic voltammetry and a linear decay-rise of the galvanostatic charge-discharge dependences. Typical values of specific capacity ~ 50 F / g were obtained. Composite electrodes made of nickel hydroxide nanoparticles in a carbon matrix demonstrated an increase in capacitance to ~ 180 F / g. It is shown that composite electrodes are promising for creating capacitors with a high specific capacity.

Electroflotation recovery of highly dispersed carbon materials from aqueous solutions of electrolyte

2019 ◽  
Vol 209 ◽  
pp. 73-78 ◽  
Author(s):  
Artem Kolesnikov ◽  
Alyona Milyutina ◽  
Andrey Desyatov ◽  
Vladimir Kolesnikov
Keyword(s):  
Aqueous Solutions ◽  
Carbon Materials ◽  
Highly Dispersed

MOF-Derived Carbon Materials Mounted with Highly Dispersed Ru and MoO3 for Rechargeable Li–O2 Cathode Yield Enhanced Cyclability

2018 ◽  
Vol 7 (2) ◽  
pp. 2296-2303 ◽  
Author(s):  
Jing Li ◽  
Yijie Deng ◽  
Limin Leng ◽  
Kailing Sun ◽  
Lulu Huang ◽  
...  
Keyword(s):  
Carbon Materials ◽  
Highly Dispersed

CoMo-bimetallic N-doped porous carbon materials embedded with highly dispersed Pt nanoparticles as pH-universal hydrogen evolution reaction electrocatalysts

Nanoscale ◽  
2020 ◽  
Vol 12 (38) ◽  
pp. 19804-19813 ◽  
Author(s):  
Wen-Huan Huang ◽  
Xi-Ming Li ◽  
Dan-Yang Yu ◽  
Xiu-Fang Yang ◽  
Li-Feng Wang ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Porous Carbon ◽  
Carbon Material ◽  
Carbon Materials ◽  
Pt Nanoparticles ◽  
Porous Carbon Materials ◽  
Highly Dispersed

A novel CoMo bimetallic N-doped carbon material embedded with highly dispersed 4.7% Pt nanoparticles as a pH-universal hydrogen evolution reaction electrocatalyst with excellent durability.

scholarly journals ХАРАКТЕРИЗАЦИЯ УГЛЕРОДНЫХ ЭЛЕКТРОДОВ С НАНОЧАСТИЦАМИ ГИДРОКСИД НИКЕЛЯ ДЛЯ СУПЕРКОНДЕНСАТОРОВ(CHARACTERIZATION OF CARBON ELECTRODES WITH NANOPARTICLES OF NICKEL HYDROXIDE FOR SUPERCONDENSERS)

2020 ◽  
Author(s):  
Shyryn Nurbolat ◽  
Zhanar Kalkozova ◽  
Khabibulla Abdullin
Keyword(s):  
Cyclic Voltammetry ◽  
Nickel Hydroxide ◽  
Polyvinylidene Fluoride ◽  
Carbon Materials ◽  
Specific Capacity ◽  
Carbon Electrodes ◽  
Composite Electrodes ◽  
Galvanostatic Charge ◽  
Highly Dispersed ◽  
Charge Discharge

Composite electrodes for supercapacitors have been obtained, consisting of a matrix of highly dispersed carbon materials: microcrystalline graphite and multi-walled carbon nanotubes, also a filler of nanoparticles of nickel hydroxide. Β-Co (OH) 2 and β-Ni (OH) 2 nanopowders were obtained by chemical deposition from solution. To create the electrodes, a polyvinylidene fluoride polymer in the form of a powder was used as a bonding material. The main technological stages of the manufacture of electrodes were determined, the parameters of the obtained structures were measured by the method of cyclic voltammetry and galvanostatic charge-discharge. For the manufacture of carbon electrodes, the optimal ratios of highly dispersed carbon materials, a binder polymer and a solvent have been determined to create mechanically strong layers with high conductivity and capacity. The technique of creating capacitor structures and measuring the capacitance of the obtained electrochemical capacitors has been worked out. Capacitors made of highly dispersed carbon materials showed typical rectangular curves of cyclic voltammetry and a linear decay-rise of the galvanostatic charge-discharge dependences. Typical values of specific capacity ~ 50 F / g were obtained. Composite electrodes made of nickel hydroxide nanoparticles in a carbon matrix demonstrated an increase in capacitance to ~ 180 F / g. It is shown that composite electrodes are promising for creating capacitors with a high specific capacity.

Highly stable ruthenium nanoparticles on 3D mesoporous carbon: an excellent opportunity for reduction reactions

2015 ◽  
Vol 3 (46) ◽  
pp. 23448-23457 ◽  
Author(s):  
Pitchaimani Veerakumar ◽  
Namasivayam Dhenadhayalan ◽  
King-Chuen Lin ◽  
Shang-Bin Liu
Keyword(s):  
Crystal Violet ◽  
Mesoporous Carbon ◽  
Carbon Materials ◽  
Catalytic Reduction ◽  
Ruthenium Nanoparticles ◽  
Reduction Reactions ◽  
Excellent Opportunity ◽  
Highly Dispersed ◽  
Mesoporous Carbon Materials

Highly dispersed Ru nanoparticle containing 3D mesoporous carbon materials that show superior performances during catalytic reduction of p-nitroaniline (p-NA) and crystal violet (CV) are studied.

Three-dimensional distribution of ribulose-1, 5-bisphosphate carboxylase/oxygemase during the early development of proplastids in dark-grown Euglena cells transferred to an inorganic medium

1990 ◽  
Vol 48 (3) ◽  
pp. 906-907
Author(s):  
Tomoko Ehara ◽  
Shuji Sumida ◽  
Tetsuaki Osafune ◽  
Eiji Hase
Keyword(s):  
Cell Suspension ◽  
Euglena Gracilis ◽  
Carbon Materials ◽  
Three Dimensional ◽  
Peripheral Region ◽  
Plastid Development ◽  
Bisphosphate Carboxylase ◽  
Inorganic Medium ◽  
Ribulose 1 ◽  
Dimensional Distribution

As shown previously, Euglena cells grown in Hutner’s medium in the dark without agitation accumulate wax as well as paramylum, and contain proplastids showing no internal structure except for a single prothylakoid existing close to the envelope. When the cells are transferred to an inorganic medium containing ammonium salt and the cell suspension is aerated in the dark, the wax was oxidatively metabolized, providing carbon materials and energy 23 for some dark processes of plastid development. Under these conditions, pyrenoid-like structures (called “pro-pyrenoids”) are formed at the sites adjacent to the prolamel larbodies (PLB) localized in the peripheral region of the proplastid. The single prothylakoid becomes paired with a newly formed prothylakoid, and a part of the paired prothylakoids is extended, with foldings, in to the “propyrenoid”. In this study, we observed a concentration of RuBisCO in the “propyrenoid” of Euglena gracilis strain Z using immunoelectron microscopy.

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