The preparation of N, S, P self-doped and oxygen functionalized porous carbon via aerophilic interface reaction for high-performance supercapacitors
The preparation of N, S, P self-doped and oxygen functionalized porous carbon via aerophilic interface reaction for high-performance supercapacitors
复制标题
亲气界面反应制备N、S、P自掺杂氧功能化多孔碳用于高性能超级电容器
DOI：
10.1007/s10854-020-03849-y
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发表时间：
2020
期刊：
影响因子：
--
通讯作者：
Zhong Mei-e
中科院分区：
文献类型：
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作者：
Zhou Nan;Zu Junning;Xu Fengjuan;Wang Yifan;Luo Yahui;Li Shikai;Tang Jiajie;Zhou Zhi;Zhong Mei-e
杂原子掺杂的多孔碳材料是超级电容器电极的有希望的候选者，但是杂原子自掺杂碳，特别是来自生物质的杂原子自掺杂碳的简单且低成本的制备方法仍然是一个挑战。因此，我们开发了一种新的策略，可以提供一个好氧的界面反应，以生产N，S，P自掺杂和氧功能化的多孔碳从榴莲皮的外层结构在温和的环境中。所得多孔生物炭具有N、S、P自掺杂和丰富的含氧官能团，可提高炭电极的电化学电容器性能、稳定性和亲水性。当用于对称超级电容器装置时，功能化的生物炭可以在1.0V的电压窗口内在500 W kg-1的功率密度下提供158.20F g-1（1A g-1）的比电容，21.97Wh kg-1的高能量密度，并且在20之后具有101.35%的显著循环耐久性。000次充电/放电循环，4 A g− 1，6 M KOH电解液。该工作为获得杂原子自掺杂的高稳定性碳基电极材料提供了一种有效且经济的途径。
Heteroatom-doped porous carbon materials are promising candidates for supercapacitor electrodes, but the simple and low-cost preparation method for heteroatom self-doped carbon, especially derived from biomass, remains a challenge. Herein, we developed a novel strategy that can provide an aerophilic interfacial reaction to produce N, S, P self-doped and oxygen functionalized porous carbon from the outer layer structure of durian peels in facile environment. The obtained porous biochar with N, S, P self-doped and abundant oxygen-containing functional groups can enhance the electrochemical capacitor performance, stability, and hydrophilicity of carbon electrode. When employed into symmetric supercapacitor device, the biochar of functionalization could deliver a specific capacitance of 158.20 F g−1at 1 A g−1, a high energy density of 21.97 Wh kg−1at a power density of 500 W kg−1within a voltage window of 1.0 V and a remarkable cycling durability with 101.35% after 20,000 charge/discharge cycles at 4 A g−1in 6 M KOH electrolyte. This work provides an effective and economic approach to obtain heteroatom self-doped and highly stable carbon-based electrode materials.