Direct observation of the oxidation nickel in molten carbonate

Preparation and Characterization of NiO Nanoparticles by Anodic Arc Plasma Method

“…Nanoparticles exhibit novel properties that significantly differ from those of corresponding bulk solid state owing to the different effects in terms of small size effect, surface effect, quantum size effect, and macroscopic quantum tunnel effect [1,2]. In recent years, NiO nanoparticles as a kind of functional material has attracted extensive interests due to its novel optical, electronic, magnetic, thermal, and mechanical properties and potential application in catalyst, battery electrodes, gas sensors, electrochemic films, photoelectronic devices, and so on [3][4][5][6][7][8][9]. In these applications, it is still needed for synthesizing high-quality and ultrafine powders with required characteristics in terms of their size, morphology, microstructure, composition purity, crystallizability, and so on, which are the most essential factors which eventually determine the microstructure and performance of the final products.…”

Nanoparticles of nickel oxide and nickel hydroxide using lyophilisomes of fibrinogen as template

“…So far, many synthesis methods have been developed for fabricating nickel oxide nanocrystals. Some are based on vacuum evaporation, annealing, or thermal decomposition of nickel hydroxide precursors or by using a surface-capping agent or organometallic precursor-mediated growth process [10,11,4,[12][13][14][15][16][17][18][19][20]. Recently, a sonochemical method has been used by Gedanken and co-workers in their work on synthesis of nickel hydroxide clusters [21].…”

Gas electrodes with nickel based current collectors for molten carbonate electrolyte thermo-electrochemical cells

“…To establish similar oxidization conditions in this study, the in-situ Ni oxidization was performed in a closed cell containing the molten eutectic (Li,K) 2 CO 3 supplied with CO 2 |O 2 gas maintained at 650 °C. The Ni metal in contact with O 2 gas and (Li,K) 2 CO 3 electrolyte undergoes a stage-by-stage oxidization as time increases, [ [21][22][23] . First, the O 2 gas oxidizes Ni to form NiO by the following reaction [23][24][25] ,…”

“…Also, large pores like intergranular voids are found on the Li 0.1 Ni 0.9 O surface. Probably the recrystallization after Ni oxidization and Li insertion might lead to a lag in interconnection between the grains [19,22,23] . Table 1.…”