A New Class of Heteroatom-Doped Porous Carbon Materials with Unprecedented High Volumetric Capacitive Performance.

A New Class of Heteroatom-Doped Porous Carbon Materials with Unprecedented High Volumetric Capacitive Performance.
Angew Chem Int Ed Engl. 2019 Jan 08;:
Authors: Jin H, Feng X, Li J, Li M, Xia Y, Yuan Y, Yang C, Dai B, Lin Z, Wang J, Wang S, Lu J
Abstract
The design of simultaneously high mass density and large porosity carbon-based materials has always been a challenging goal to fulfill the demands of next generation of high volumetric performance supercapacitors and other electrochemical devices. Here, we report a new class of high-density heteroatom-doped porous carbon as aqueous-based supercapacitor materials via an in-situ dehalogenation reaction between halogenated conjugated diene and nitrogen-containing nucleophiles. Under reaction conditions, pyridinium salts with conjugated double bonds could continue to experience the dehalogenation reaction only if there is a trace amount of residue water from the starting materials. The as-obtained carbon materials are highly doped by varied heteroatoms, which render high densities and endow abundant multimodal pores, leading to excellent volumetric capacitive performance. N, P, O-tri-doped porous carbon 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.
PMID: 30620788 [PubMed - as supplied by publisher]

Source: Angewandte Chemie - January 8, 2019 Category: Chemistry Authors: Jin H, Feng X, Li J, Li M, Xia Y, Yuan Y, Yang C, Dai B, Lin Z, Wang J, Wang S, Lu J Tags: Angew Chem Int Ed Engl Source Type: research