Hierarchical N-doped holey three-dimensional reduced graphene oxide with high performance capacitive deionization

• DOI: 10.1016/j.jmrt.2021.09.043
• Publication Date: 2021-09-16T01:58:55Z
• Authors: Shi Liu; Bingjian Li; Yinjie Zhou; Xixi Xu; Rong Yang; Qiuze Wang; Jinchun Li
• Keywords: Capacitive Deionization; Specific surface area

In this study, a novel three-dimensional reduced graphene oxide (NHGH-0.2) was synthesized via one-step hydrothermal treatment based on nitrogen doped and hydrogen peroxide etching. The preparation of NHGH-0.2 showed hierarchical holey structure with high specific surface area 874.9 m2/g, resulted from the synergistic effect N-doped chemical Electrochemical analysis ultrahigh capacitance 303.1 F/g at current density 1 A/g low charge transfer resistance, due to excellent wettability conductivity, which help for rapidly diffuse ions electrode surface. Capacitance still maintained 92.8% by cycling stability test after 1000 charge–discharge cycles. desalination performance applied capacitive deionization (CDI) displayed salt adsorption as 22.14 mg/g voltage 1.6 V in initial concentration 500 mg/L NaCl solution. Therefore, could be promising CDI material water treatment.