Present work explores graphene-coated vanadium pentoxide (G-V 2 O 5 ) as novel electrosorption material for the desalination of low molarity saline/brackish water. During the desalination cycles, along with the electrical double layer formation at the graphene layer, ion intercalation is observed in the honeycomb structure of the hydrothermally grown V 2 O 5 layer leading to an improvement in Na + and Cl − ion removal from the brackish water. The conventional capacitance tests by pairing G-V 2 O 5 electrodes in a three-electrode cell shows a remarkable capacitance value of 500 F g −1 , and the capacitive deionization process over 50 cycles at 5, 10 and 15 mM concentration (NaCl) gives a maximum salt adsorption capacity of 12.5 mg of NaCl per gram of electrode. Utilizing the faradaic and non-faradaic process for electrosorption desalination paves a way towards exploring alternative materials and t...

中文翻译：

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多层石墨烯包覆的氧化钒（V）作为用于基于插层的微咸水淡化的电极

目前的工作探索了石墨烯涂层的五氧化二钒（GV 2 O 5）作为用于低摩尔浓度盐水/微咸水脱盐的新型电吸附材料。在脱盐循环中，伴随在石墨烯层上形成双电层，在水热生长的V 2 O 5层的蜂窝结构中观察到离子嵌入，从而改善了从微咸水中去除Na +和Cl-的离子。 。在三电极电池中通过配对GV 2 O 5电极进行的常规电容测试显示出显着的500 F g -1电容值，并且在5、10和15 mM浓度（NaCl）下经过50个循环的电容去离子过程得到了每克电极最大的盐吸附容量为12.5 mg NaCl。