Key Words:REDUCED GRAPHENE OXIDE; DESALINATION PERFORMANCE; BACTERIAL-CELLULOSE; WATER DESALINATION; FARADAIC REACTIONS; CHARGE EFFICIENCY; ANODE; COMPOSITES; POLYHEDRA; BEHAVIOR
Abstract:Developing highly efficient electrochemical desalination techniques with both high salt removal capacity as well as sufficient longterm durability is urgently required in settling the global water crisis. Herein, we developed a high-performance hybrid capacitive deionization (HCDI) through the deployment of freestanding, Mn2O3 nanoflower decorated carbon nanofibers (CNF@Mn2O3) with pseudo-capacitive behavior as the electrode. The CNF@Mn2O3 synthesized via electrospinning and in-situ deposition of Mn2O3 shows both excellent pseudocapacitive performance and freestanding nanostructure, which enables the CNF@Mn2O3-based HCDI system to exhibit superior desalination performance(27.43 mg.g(-1)) as well as long-term stability (14.3% declination for 30 cycles). Such outstanding desalination performance should be ascribed to the high pseudo-capacitance, excellent charge transfer performance, and the freestanding nature of the CNF@Mn2O3. This study is interesting because it exemplifies the importance of designing pseudo-capacitive electrode materials for constructing a high-performance HCDI system, which could cast light on the further development of high-efficiency electrochemical desalination systems.
Volume:494
Issue:
Translation or Not:no