ZIF-8 derived, nitrogen-doped porous electrodes of carbon polyhedron particles for high-performance electrosorption of salt ions

Authors

Nei-Ling Liu, National Taiwan University
Saikat Dutta, National Taiwan University
Rahul R. Salunkhe, National Institute for Materials Science, Japan
Tansir Ahamad, King Saud University
Saad M. Alshehri, King Saud University
Yusuke Yamauchi, University of WollongongFollow
Chia-Hung Hou, National Taiwan University
Kevin C.-W Wu, National Taiwan University

RIS ID

108796

Publication Details

Liu, N., Dutta, S., Salunkhe, R. R., Ahamad, T., Alshehri, S. M., Yamauchi, Y., Hou, C. & Wu, K. C.-W. (2016). ZIF-8 derived, nitrogen-doped porous electrodes of carbon polyhedron particles for high-performance electrosorption of salt ions. Scientific Reports, 6 28847-1-28847-7.

Abstract

Three-dimensional (3-D) ZIF-8 derived carbon polyhedrons with high nitrogen (N) content, (denoted as NC-800) are synthesized for their application as high-performance electrodes in electrosorption of salt ions. The results showed a high specific capacitance of 160.8 F·g−1 in 1 M NaCl at a scan rate of 5 mV·s−1. Notably, integration of 3-D mesopores and micropores in NC-800 achieves an excellent capacitive deionization (CDI) performance. The electrosorption of salt ions at the electrical double layer is enhanced by N-doping at the edges of a hexagonal lattice of NC-800. As evidenced, when the initial NaCl solution concentration is 1 mM, the resultant NC-800 exhibits a remarkable CDI potential with a promising salt electrosorption capacity of 8.52 mg·g−1.