Microalgae present a massive and untapped natural source of biomass for various applications. The fresh-water microalgae biomass was collected from Lake Uluabat in Turkey. Diatoms, which contain large amounts of SiO 2 in the form of cell walls, constituted 60%wt. of the biomass. SiO 2 /N-doped carbon nanocomposite ( SiO 2 /NC ) was obtained by an efficient MgO templating of the biomass conducted through hydrothermal carbonization and successive calcination. Despite its moderate specific surface area (250 m 2 g −1 ) and low C content (18%wt.), the SiO 2 /NC electrode achieved a high specific capacitance (300 F g −1 at 0.3 A g −1 , in 1 M H 2 SO 4 ) due to pseudocapacitive contribution from heteroatoms (2%wt. N and 19% wt. O) and electric double layer contribution from interfaces expanded by SiO 2 . Interconnected network of micro- a...

中文翻译：

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硅藻土衍生的SiO 2 / N掺杂C纳米复合材料，用于电化学电容器

微藻为各种应用提供了大量尚未开发的天然生物质资源。淡水微藻生物质是从土耳其的乌鲁巴特湖收集的。硅藻以细胞壁的形式包含大量的SiO 2，占60％wt。生物量。SiO 2 / N掺杂碳纳米复合材料（SiO 2 / NC）是通过水热碳化和连续煅烧对生物质进行有效的MgO模板化而获得的。尽管SiO 2 / NC电极具有适中的比表面积（250 m 2 g -1）和低C含量（18％wt。），但在0.3 A g -1的条件下仍具有较高的比电容（300 F g -1）。 1 MH 2 SO 4）是由于杂原子（2％（重量）N和19％（重量）O）的拟电容性贡献以及来自SiO 2扩展的界面的双电层贡献。微型计算机的互连网络