ZIF-8 Derived, Nitrogen-Doped Porous Electrodes of Carbon Polyhedron Particles for High-Performance Electrosorption of Salt Ions.
Nei-Ling Liu, Saikat Dutta, Rahul R Salunkhe, Tansir Ahamad, Saad M Alshehri, Yusuke Yamauchi, Chia-Hung Hou, Kevin C-W Wu
Author Information
Nei-Ling Liu: Graduate School of Environmental Engineering, National Taiwan University, Taipei 10617, Taiwan.
Saikat Dutta: Department of Chemical Engineering, National Taiwan University, Taipei 10617, Taiwan.
Rahul R Salunkhe: World Premier International (WPI) Research Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan.
Tansir Ahamad: Department of Chemistry, College of Science, King Saud University, Riyadh 11451, Saudi Arabia.
Saad M Alshehri: Department of Chemistry, College of Science, King Saud University, Riyadh 11451, Saudi Arabia.
Yusuke Yamauchi: World Premier International (WPI) Research Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan.
Chia-Hung Hou: Graduate School of Environmental Engineering, National Taiwan University, Taipei 10617, Taiwan.
Kevin C-W Wu: Department of Chemical Engineering, National Taiwan University, Taipei 10617, Taiwan.
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).
