Heteroatom‐Doped Porous Carbon Materials with Unprecedented High Volumetric Capacitive Performance. (25th January 2019)

• Record Type: Journal Article
• Authors: Jin, Huile; Feng, Xin; Li, Jun; Li, Matthew; Xia, Yuanzhi; Yuan, Yifei; Yang, Chao; Dai, Bin; Lin, Zhiqun; Wang, Jichang; Lu, Jun; Wang, Shun
• Is Part Of: Angewandte Chemie. Volume 131:Number 8(2019)
• Page Start: 2419
• Page End: 2423
• Publication Date: 2019-01-25
• Subjects: Heteroatome -- Kohlenstoffmaterialien -- Poröser Kohlenstoff -- Superkondensatoren -- Volumetrische Energiedichte; Chemistry -- Periodicals; 540
• DOI: 10.1002/ange.201813686
• Languages: English
• ISSNs: 0044-8249

Abstract

Abstract: The design of carbon‐based materials with a high mass density and large porosity has always been a challenging goal, since they fulfill the demands of next‐generation supercapacitors and other electrochemical devices. We report a new class of high‐density heteroatom‐doped porous carbon that can be used as an aqueous‐based supercapacitor material. The material was synthesized by an in situ dehalogenation reaction between a halogenated conjugated diene and nitrogen‐containing nucleophiles. Under the given conditions, pyridinium salts can only continue to perform the dehalogenation if there is residue water remaining from the starting materials. The obtained carbon materials are highly doped by various heteroatoms, leading to high densities, abundant multimodal pores, and an excellent volumetric capacitive performance. Porous carbon tri‐doped with nitrogen, phosphorous, and oxygen exhibits a high packing density (2.13 g cm −3 ) and an exceptional volumetric energy density (36.8 Wh L −1 ) in alkaline electrolytes, making it competitive to even some Ni‐MH cells. Abstract : Porös und voller Potential : Eine unkonventionelle, auf Polymeren basierende Strategie ermöglicht die Synthese von heteroatomdotierten Kohlenstoffmaterialien mit hoher Dichte. Der so erhaltene Superkondensator hat in alkalischen Elektrolyten eine volumetrische Energiedichte von 36.8 Wh L −1, ein Rekordwert für kohlenstoffbasierte Superkondensatoren in wässriger Lösung.