N‐Doping in Precursor Sol: Some Observations in Reference to In Situ‐Grown Carbon Film Electrodes for Supercapacitor Applications

2020 ◽  
Vol 8 (5) ◽  
pp. 1901479
Author(s):  
Madhav P. Chavhan ◽  
Debarchan Basu ◽  
Aditya Singh ◽  
Somenath Ganguly
Author(s):  
K. Fukushima ◽  
N. Kohyama ◽  
A. Fukami

A film-sealed high resolution environmental cell(E.C) for observing hydrated materials had been developed by us(l). Main specification of the E.C. is as follows: 1) Accelerated voltage; 100 kV. 2) Gas in the E.C.; saturated water vapour with carrier gas of 50 Torr. 3) Thickness of gas layer; 50 μm. 4) Sealing film; evaporated carbon film(20 nm thick) with plastic microgrid. 5) Resolving power; 1 nm. 6) Transmittance of electron beam; 60% at 100 kV. The E.C. had been successfully applied to the study of hydrated halloysite(2) (3). Kaolin minerals have no interlayer water and are basically non-expandable but form intercalation compounds with some specific chemicals such as hydrazine, formamide and etc. Because of these compounds being mostly changed in vacuum, we tried to reveal the structure changes between in wet air and in vacuum of kaolin minerals intercalated with hydrazine and of hydrated state of montmori1lonite using the E.C. developed by us.


2008 ◽  
Vol 53 (23) ◽  
pp. 6732-6739 ◽  
Author(s):  
Carla Gouveia-Caridade ◽  
Rasa Pauliukaite ◽  
Christopher M.A. Brett

2014 ◽  
Vol 46 ◽  
pp. 5-8 ◽  
Author(s):  
Simon Franz Lux ◽  
Elad Pollak ◽  
Ulrike Boesenberg ◽  
Thomas Richardson ◽  
Robert Kostecki

2021 ◽  
Vol 37 (1) ◽  
pp. 37-47
Author(s):  
Osamu NIWA ◽  
Saki OHTA ◽  
Shota TAKAHASHI ◽  
Zixin ZHANG ◽  
Tomoyuki KAMATA ◽  
...  

2008 ◽  
Vol 20 (5) ◽  
pp. 485-490 ◽  
Author(s):  
Rasa Pauliukaite ◽  
Andrew P. Doherty ◽  
Kevin D. Murnaghan ◽  
Christopher M. A. Brett

2015 ◽  
Vol 7 (5) ◽  
pp. 1929-1935 ◽  
Author(s):  
Shuang Wang ◽  
Jixiang Zhou ◽  
Xian Wang ◽  
Guocheng Yang

Platinum nanoparticles (PtNPs) and 4-aminobenzoic acid (4-ABA) were used to modify nitrogen-doped diamond-like carbon (N:DLC) film electrode by electrodeposition and cyclic voltammetry.


2010 ◽  
Vol 64 ◽  
pp. 83-87 ◽  
Author(s):  
Chihiro Iwamoto ◽  
Shunichiro Tanaka

In-situ HRTEM technique was applied to various substrates and the reaction processes between substrates and molten alloy were compared. Substrates used were SiC, Si3N4, Si wafers, an amorphous carbon film, and a carbon nanotube. Ti-containing Ag-Cu eutectic alloy foil was placed on the substrate and the combined specimen mounted on the heating holder of an HRTEM and heated in the microscope to melt the alloy foil. In the case of SiC, Si3N4, carbon materials, the molten alloy spreading on the substrates were observed after melting of the alloy. SiC polar plane nano-steps appeared with the SiC dissociation by the molten alloy. On the surface of the carbon nanotube, thin film precursor spreading was observed. In contrast, Si reaction with the molten alloy produced big holes at the contacted area and molten alloy spreading was not observed.


2017 ◽  
Vol 52 ◽  
pp. 321-330 ◽  
Author(s):  
Sanjit Saha ◽  
Pranab Samanta ◽  
Naresh C. Murmu ◽  
Nam H. Kim ◽  
Tapas Kuila ◽  
...  

1998 ◽  
Vol 4 (S2) ◽  
pp. 720-721
Author(s):  
T. Chen ◽  
J.M. Hampikian ◽  
N.N. Thadhani ◽  
Z.L. Wang

NiAl is an important high temperature structural material, with a high melting point (1640°C), low density and excellent high temperature oxidation resistance. The room temperature ductility of NiAl may potentially be improved with the use of nanocrystalline grain size. However, a key question concerning the application of nanostructured NiAl is about its structural stability at high temperature. The current study is thus focused on the investigation of the structural stability of nanocrystalline NiAl using in-situ transmission electron microscopy (TEM) and differential thermal analysis (DTA).Nanocrystalline B2-NiAl was prepared by ball milling (24 hrs) from elemental Ni and Al powders. Subsequent consolidation into bulk form was performed using dynamic consolidation employing a 3-capsule plate-impact fixture at approximately 400 m/s [1-3]. Powder nanocrystalline NiAl was dispersed on a holey carbon film for TEM observation. TEM specimens of shock compacted bulk NiAl nanocrystals were prepared by cutting, polishing, dimpling and ion milling.


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