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Molten salt electrolytic synthesis of porous carbon from SiC and its application in supercapacitors

Nanoscale porous carbide-derived carbon (CDC) microspheres were successfully synthesized via the electrolysis etching of nano-SiC microsphere powder precursors with a particle diameter of 200 to 500 nm in molten CaCl(2). Electrolysis was conducted at 900 °C for 14 h in argon at an applied constant v...

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Detalles Bibliográficos
Autores principales: Zheng, Kai, Luo, Wenbo, Long, Shaolei, Long, Xiao, Shi, Cuilian, Liu, Pengcheng, Li, Jierui, Li, Wubin
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Royal Society of Chemistry 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10201547/
https://www.ncbi.nlm.nih.gov/pubmed/37223412
http://dx.doi.org/10.1039/d2ra07870h
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author Zheng, Kai
Luo, Wenbo
Long, Shaolei
Long, Xiao
Shi, Cuilian
Liu, Pengcheng
Li, Jierui
Li, Wubin
author_facet Zheng, Kai
Luo, Wenbo
Long, Shaolei
Long, Xiao
Shi, Cuilian
Liu, Pengcheng
Li, Jierui
Li, Wubin
author_sort Zheng, Kai
collection PubMed
description Nanoscale porous carbide-derived carbon (CDC) microspheres were successfully synthesized via the electrolysis etching of nano-SiC microsphere powder precursors with a particle diameter of 200 to 500 nm in molten CaCl(2). Electrolysis was conducted at 900 °C for 14 h in argon at an applied constant voltage of 3.2 V. The results show that the obtained product is SiC-CDC, which is a mixture of amorphous carbon and a small quantity of ordered graphite with a low degree of graphitization. Similar to the SiC microspheres, the obtained product retained its original shape. The specific surface area was 734.68 m(2) g(−1). The specific capacitance of the SiC-CDC was 169 F g(−1), and it exhibited excellent cycling stability (98.01% retention of the initial capacitance after 5000 cycles) at a current density of 1000 mA g(−1).
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spelling pubmed-102015472023-05-23 Molten salt electrolytic synthesis of porous carbon from SiC and its application in supercapacitors Zheng, Kai Luo, Wenbo Long, Shaolei Long, Xiao Shi, Cuilian Liu, Pengcheng Li, Jierui Li, Wubin RSC Adv Chemistry Nanoscale porous carbide-derived carbon (CDC) microspheres were successfully synthesized via the electrolysis etching of nano-SiC microsphere powder precursors with a particle diameter of 200 to 500 nm in molten CaCl(2). Electrolysis was conducted at 900 °C for 14 h in argon at an applied constant voltage of 3.2 V. The results show that the obtained product is SiC-CDC, which is a mixture of amorphous carbon and a small quantity of ordered graphite with a low degree of graphitization. Similar to the SiC microspheres, the obtained product retained its original shape. The specific surface area was 734.68 m(2) g(−1). The specific capacitance of the SiC-CDC was 169 F g(−1), and it exhibited excellent cycling stability (98.01% retention of the initial capacitance after 5000 cycles) at a current density of 1000 mA g(−1). The Royal Society of Chemistry 2023-05-22 /pmc/articles/PMC10201547/ /pubmed/37223412 http://dx.doi.org/10.1039/d2ra07870h Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by-nc/3.0/
spellingShingle Chemistry
Zheng, Kai
Luo, Wenbo
Long, Shaolei
Long, Xiao
Shi, Cuilian
Liu, Pengcheng
Li, Jierui
Li, Wubin
Molten salt electrolytic synthesis of porous carbon from SiC and its application in supercapacitors
title Molten salt electrolytic synthesis of porous carbon from SiC and its application in supercapacitors
title_full Molten salt electrolytic synthesis of porous carbon from SiC and its application in supercapacitors
title_fullStr Molten salt electrolytic synthesis of porous carbon from SiC and its application in supercapacitors
title_full_unstemmed Molten salt electrolytic synthesis of porous carbon from SiC and its application in supercapacitors
title_short Molten salt electrolytic synthesis of porous carbon from SiC and its application in supercapacitors
title_sort molten salt electrolytic synthesis of porous carbon from sic and its application in supercapacitors
topic Chemistry
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10201547/
https://www.ncbi.nlm.nih.gov/pubmed/37223412
http://dx.doi.org/10.1039/d2ra07870h
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