Boosting Energy Storage Capability of Nitrogen‐Doped Hierarchically Porous Carbon by Graphitization,Energy Technology

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Boosting Energy Storage Capability of Nitrogen‐Doped Hierarchically Porous Carbon by Graphitization
Energy Technology ( IF 3.6 ) Pub Date : 2020-05-30 , DOI: 10.1002/ente.202000127
Rong Zeng ₁ , Fanghuang Liu ₁ , Shunmin Ding ₂ , Ling Wu ₁ , Shuang Zhang ₁ , Jiale Zhou ₁

Affiliation

The construction of excellent electrochemical double‐layer capacitors (EDLCs) with high energy density is prospective but still challenging. Herein, a combined strategy of self‐template pyrolysis, KOH activation, and iron‐catalytic graphitization is developed to synthesize nitrogen‐doped hierarchically porous partially graphitic carbon (NHPGC) as electrodes material of EDLCs. The obtained NHPGC presents specific features: containing nitrogen element, hierarchically porous structure with a large surface area (2662 m² g⁻¹), and graphitic structure. Attributed to the advanced design, the assembled NHPGC//NHPGC supercapacitor shows superior ion transport ability and remarkable cycle long life (96.9% retention after 20 000 cycles). The present strategy for nitrogen‐doped hierarchically porous partially graphitic carbon can be extended to apply for other high‐performance energy storage applications.

中文翻译：

通过石墨化提高氮掺杂多级多孔碳的储能能力

具有高能量密度的优质电化学双层电容器（EDLC）的构造是有前途的，但仍具有挑战性。在本文中，开发了自模板热解，KOH活化和铁催化石墨化的组合策略，以合成氮掺杂的分级多孔部分石墨碳（NHPGC）作为EDLC的电极材料。所获得的NHPGC具有以下特征：含氮元素，具有大表面积（2662 m ² g ^-1）和石墨结构。归功于先进的设计，组装后的NHPGC // NHPGC超级电容器具有出色的离子传输能力和出色的循环寿命（在2万次循环后保留96.9％）。氮掺杂的分级多孔部分石墨碳的当前策略可以扩展到其他高性能储能应用。

更新日期：2020-07-02

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