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Nitrogen and sulfur codoped porous carbon microspheres (NS-PCMSs) with superior electrochemical performance for supercapacitors were successfully fabricated using sublimed sulfur, thiourea and TMTD as different sulfur source by a solvothermal method. The transmission electron microscopy(TEM), scanning electron microscopy (SEM) and Raman spectroscopy indicate the obtained NS-PCMSs have uniform morphology...
In this work, various nickel cobalt double hydroxide nanoflowers with different Ni/Co ratios (denoted as NixCo(1−x)(OH)2), assembled by filmy nanoflakes, are prepared via a facile template-free hydrothermal process. The sizes of these nanoflowers are easily tuned by the Ni/Co ratio in the precursors. The formation mechanism of flower-like nickel cobalt hydroxide, based on the synergistic effect of...
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