Developing a facile assembly approach replacing the fussy StÖber and chemical vapor deposition (CVD) method to fabricate hollow carbon nanostructure would be a meaningful topic towards its wide applications. Herein, we developed a simple glyoxal mediated assembly approach using commercial magnesium oxide (MgO) as template and phenol ascarbonaceous material to fabricate the hollow carbon nanostructure. The fabricated carbon owns hollow cocoon-like morphology, high surface area of 1411 m²/g, large pore volume (3.46 cm³/g) and rich oxygenic functionalites (6.7 atom%). As electrode for symmetric supercapacitor, the GPC973 electrode shows a superior supercapacitor performances with large energy density of 30.7 Wh/kg@500 W/kg and high rate capability of 68% from 1.0 A/g to 20 A/g. The developed strategy offers an alternative way to fabricate carbon hollow nanostructure thus afford a promising application of these type material in many other areas.

开发一种简便的组装方法来代替繁琐的Stöber和化学气相沉积（CVD）方法来制造空心碳纳米结构，将是其广泛应用的一个有意义的主题。本文中，我们开发了一种简单的乙二醛介导的组装方法，该方法使用商业氧化镁（MgO）作为模板和酚类含碳材料来制造中空碳纳米结构。制成的碳具有中空的茧状形态，高比表面积为1411 m ² / g，大孔容（3.46 cm ^3）/ g）和富氧官能团（6.7原子％）。作为对称超级电容器的电极，GPC973电极具有出色的超级电容器性能，在1.0 A / g至20 A / g的能量密度下，能量密度为30.7 Wh / kg @ 500 W / kg，高倍率能力为68％。所开发的策略提供了一种制造碳空心纳米结构的替代方法，从而使这些类型的材料在许多其他领域得到了有希望的应用。