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首页> 外文期刊>RSC Advances >A shiitake-derived nitrogen/oxygen/phosphorus co-doped carbon framework with hierarchical tri-modal porosity for high-performance electrochemical capacitors
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A shiitake-derived nitrogen/oxygen/phosphorus co-doped carbon framework with hierarchical tri-modal porosity for high-performance electrochemical capacitors

机译：一种用于高性能电化学电容器的等级三模态孔隙的唾液衍生的氮/氧/磷共掺杂碳框架

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摘要

It is greatly significant to develop cost-effective carbons with multi-heteroatom functionalities and hierarchical multi-modal porosity as advanced electrodes for high-performance electrochemical capacitors (ECs). In this contribution, we purposefully proposed a simple yet efficient protocol to scalably fabricate N/O/P co-doped carbon with a hierarchical tri-modal (micro-/meso-/macro-) porosity by utilizing a sustainable natural shiitake as a cheap raw material. Benefiting from intriguing synergistic contributions from the hierarchical porous architecture and compositional merits, the as-fabricated shiitake-derived N/O/P co-doped carbon (SNOPC) exhibited extraordinary electrochemical capacitances with a large specific capacitance (SC) of ～315 F g ~(?1) at a current rate of 0.5 A g ~(?1) . More strikingly, a gel–electrolyte SNOPC-based symmetric device within a large cell-voltage window of 1.3 V delivered a high energy density of ～14.4 W h kg ~(?1) at a power density of ～325 W kg ~(?1) , and excellent cycling stability at a large current density. More encouragingly, the elegant design concept, i.e. , the smart combination of three-dimensional interconnected hierarchical porosity into the N/O/P co-doped carbon framework, could be easily extended to other low-cost biomass-based carbon materials for next-generation ECs.
机译：用多杂原子函数和分层多模态孔隙率开发具有多杂原子功能和等级电化学电极的高性能电化学电容器（ECS）是非常重要的。在这一贡献中，我们有目的地提出了一种简单而有效的方案，可以通过利用可持续的自然太太作为便宜的可持续天然嗜含量来伸缩用分层三模态（微/间/宏观）孔隙度来缩放N / O / P共掺杂的碳原料。受益于从分层多孔建筑和组成效果的兴趣协同贡献，由制造的Shiitake-衍生的N / O / P共掺杂碳（Snopc）表现出具有大的特定电容（SC）的非凡的电化学电容，〜315 f g 〜（？1）在0.5 a g〜（α1）的电流速率下。更令人醒目地，在1.3V的大电池电压窗口内的基于凝胶电解质的Snopc基对称装置，在功率密度为〜325W kg〜（？ 1），并且具有出色的电流密度的优异循环稳定性。更令人鼓舞的是，优雅的设计理念，即三维互连的分层孔隙率的智能组合进入N / O / P共掺杂的碳框架，可以很容易地扩展到下一个低成本的生物量碳材料 - 一代ECS。

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