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Nontemplating Porous Carbon Material from Polyphosphamide Resin for Supercapacitors

Overview
Journal iScience
Publisher Cell Press
Date 2019 Feb 1
PMID 30703734
Citations 3
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Abstract

The nontemplating preparation of porous carbon materials by using specially designed polymer precursors for supercapacitor is attracting considerable research attention because of the more controllable frame structure and easier processes than templating methods. Herein, a deliberately designed cross-linking polyphosphamide resin with defined N and P structure is synthesized and then carbonized to obtain porous carbon material. The as-obtained porous carbon material has a specific surface area of 2,620 m g, high porosity of 1.49 cm g, and well-distributed micro/mesoporous carbon structure. Different from activation by post-added NHHPO, the confined N and P in the polymer frame are confirmed to play an important role in pore structure development by forming in situ highly dispersed NHHPO during carbonization. When evaluated as the electrode material for supercapacitors, the polyphosphamide-resin-based porous carbon material demonstrates excellent capacitance (440 F g under 0.5 A g) and high stability (retention of 93% over 10,000 cycles).

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