Bimetallic-organic coordination polymers to prepare N-doped hierarchical porous carbon for high performance supercapacitors

• Main Authors: Danchen Fu, Zeyu Chen, Chuying Yu, Xiaolan Song, Wenbin Zhong
• Format: Article
• Language: English
• Published: Elsevier 2019-10-01
• Series: Progress in Natural Science: Materials International
• Online Access: http://www.sciencedirect.com/science/article/pii/S1002007119304514

Single metal-organic coordination polymers have limited functions as precursors for porous carbon electrode materials. The construction of bimetallic organic coordination polymers can effectively utilize the advantages of each single metal-organic coordination polymer to improve the performance of the derived carbon materials. Herein, High performance nitrogen-doped porous carbon (BCFe–Ni) have been produced by directly carbonizing bimetallic organic coordination polymers formed by 4,4′-bipyridine (BPD) reaction with FeCl3 and NiCl2. The BCFe–Ni exhibits high nitrogen content (12.66 at%), large specific surface area (1049.51 m2 g−1) and hierarchical porous structure, which contributes to an excellent gravimetric specific gravity of 320.5 F g−1 and 108% of specific capacitance retention after 10000 cycles. The BCFe–Ni assembled symmetrical supercapacitor shows an energy density of 18.3 W h kg−1 at a power density of 350 W kg−1. It is expected that the as-prepared N-doped porous carbon derived from bimetallic-organic coordination polymer is a promising electrode material for high performance energy storage devices. Keywords: Bimetallic-organic coordination polymers, N-doped porous carbon, High specific surface area, Supercapacitors