种三维石墨烯基氮掺杂多孔碳复合电极材料及其制备方法

• Format: Patent
• Language: Chinese
• Published: 28.09.2018
• Subjects: BASIC ELECTRIC ELEMENTS; CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES ORLIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE; ELECTRICITY; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGYGENERATION, TRANSMISSION OR DISTRIBUTION; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE

本发明公开了种三维石墨烯基氮掺杂多孔碳复合电极材料及其制备方法。本发明首先以氧化石墨烯(GO)为原料，水热法得到石墨烯水凝胶，之后高温处理得到石墨烯气凝胶(GAs)；接着以间苯二胺(mPD)为碳氮源与石墨烯气凝胶复合，并高温处理得到NPC-GAs。本发明采用水热与高温处理法获得的三维石墨烯基氮掺杂多孔碳NPC-GAs复合材料不仅具有大的比表面积、优异的循环能力，而且碳氮掺杂使表面电荷储存快速反应，缩短了运输路径，是理想的能源材料之，可用作电极材料。 The invention discloses a three-dimensional graphene-based nitrogen-doped porous carbon composite electrode material and a preparation method thereof. The method comprises the following steps: treating graphene oxide (GO) which is taken as a raw material by a hydrothermal method to obtain graphene hydrogel, and performing high-temperature treatment on the graphene hydrogel to obtain graphene aerogel (GAs); and compounding m-phenylenediamine (mPD) which is taken as a carbon source with the graphene aerogel, and performing high-temperature treatment on the compound to obtain NPC-Gas. The three-dimensional graphene-based nitrogen-doped porous carbon NPC-GAs composite material obtained by the hydrothermal method and the high-temperature treatment method has a large specific surface area and