Rechargeable sodium storage gained increasing research attention because of the abundant reserves and relatively even geological distribution of sodium element [1]. Carbon attract great interest as electrode material due to the existing versatile preparation methods [2]. In this contribution, we present carbon based materials for sodium storage in a quasi-solid-state system.

Nitrogen-doped porous carbon prepared via pyrolysis of polypyrrole and activation with KOH presents excellent rate performance as anode material for Na ion battery [2]. When it combines with macroporous graphene prepared by microwave-assisted electrochemical exfoliation method as positive material, and a gel polymer as electrolyte, a quasi-solid-state sodium storage system can be assembled, it could operate at a cell voltage of 4.2 V with an energy density of 168 Wh/kg, and excellent cycle performance [3].

Acknowledgment:

Financial support from Natural Distinguished Youth Scientists Project of China (No. 51425301), NSFC (No. 51502137) and Basic Research Programs of Science and Technology Commission Foundation of Jiangsu Province (BK20151534) are greatly appreciated.

References:

[1] N. Yabuuchi, K. Kubota, M. Dahbi, S. Komaba, Chem. Rev., 2014, 114: 11636-11682

[2] L. J. Fu, K. Tang, K. Song, Y. Yu, J. Maier et al., Nanoscale, 2014, 6: 1384-1389

[3] F. Wang, X. Wang, L. J. Fu*, Y. P. Wu* et al., Adv. Mater., 2015, 27:6962-6968