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利用废弃莲藕茎生物质制备用于高性能超级电容器的氮掺杂多孔碳

Preparation of nitrogen-doped porous carbons for high-performance supercapacitor using biomass of waste lotus stems.

作者信息

Yan Song, Lin Jingjing, Liu Ping, Zhao Zhicheng, Lian Jun, Chang Wei, Yao Lu, Liu Yueran, Lin Hualin, Han Sheng

机构信息

School of Chemical and Environmental Engineering, Shanghai Institute of Technology Haiquan Road 100 201418 Shanghai P. R. China

出版信息

RSC Adv. 2018 Feb 12;8(13):6806-6813. doi: 10.1039/c7ra13013a. eCollection 2018 Feb 9.

DOI:10.1039/c7ra13013a
PMID:35540345
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9078325/
Abstract

In this study, advanced nitrogen-doped porous carbon materials for supercapacitor was prepared using low-cost and environmentally friendly waste lotus stems (denoted as LS-NCs). Nitrogen in the surface functionalities of LS-NCs was investigated using X-ray photoelectron spectroscopy analysis. The sum of pyridine nitrogen (N-6) and pyrrolic/pyridinic (N-5) contents accounted for 94.7% of the total nitrogen and significantly contributed to conductivity. Pore structure and surface area of activated carbons were measured using the Brunauer-Emmett-Teller method. A maximum specific surface area of 1322 m g was achieved for LS-NCs. The porous carbons exhibited excellent electrochemical properties with a specific capacitance of 360.5 F g at a current density of 0.5 A g and excellent cycling stability (96% specific capacitance retention after 5000 cycles). The above findings indicate that taking advantage of the unique structure of abundant waste lotus stem provides a low-cost and feasible design for high-performance supercapacitors.

摘要

在本研究中，使用低成本且环保的废弃莲藕茎（记为LS-NCs）制备了用于超级电容器的先进氮掺杂多孔碳材料。采用X射线光电子能谱分析研究了LS-NCs表面官能团中的氮。吡啶氮（N-6）和吡咯/吡啶型氮（N-5）含量之和占总氮的94.7%，并对导电性有显著贡献。使用布鲁诺尔-埃米特-泰勒法测量活性炭的孔结构和表面积。LS-NCs的最大比表面积达到1322 m²/g。这些多孔碳表现出优异的电化学性能，在电流密度为0.5 A/g时比电容为360.5 F/g，并且具有出色的循环稳定性（5000次循环后比电容保持率为96%）。上述发现表明，利用废弃莲藕茎丰富的独特结构为高性能超级电容器提供了一种低成本且可行的设计。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a2dc/9078325/a145e4baf471/c7ra13013a-f6.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a2dc/9078325/6e3b0a04ad99/c7ra13013a-s1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a2dc/9078325/de21e1cca3ce/c7ra13013a-f1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a2dc/9078325/a737c93970f0/c7ra13013a-f2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a2dc/9078325/b72da131137b/c7ra13013a-f3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a2dc/9078325/7b000633ee10/c7ra13013a-f4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a2dc/9078325/d723f7ec3a94/c7ra13013a-f5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a2dc/9078325/a145e4baf471/c7ra13013a-f6.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a2dc/9078325/6e3b0a04ad99/c7ra13013a-s1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a2dc/9078325/de21e1cca3ce/c7ra13013a-f1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a2dc/9078325/a737c93970f0/c7ra13013a-f2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a2dc/9078325/b72da131137b/c7ra13013a-f3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a2dc/9078325/7b000633ee10/c7ra13013a-f4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a2dc/9078325/d723f7ec3a94/c7ra13013a-f5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a2dc/9078325/a145e4baf471/c7ra13013a-f6.jpg

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