Abstract:

A new type of graphene aerogel-MnO₂(MnGA) composite materials have been developed, using graphene aerogel(GA) as carrier to support MnO₂ nano-particles, and, in addition, capacitance and electrode prepared, and the capacitive deionization capability investigated. The results show that MnO₂ can form a one-dimension linear structure on grapheme sheets, which weakens the stacking effect between the grapheme sheet layers and upgrades the material capacitance, so as to improve the desalination capability of electrodes. The maximum capacitance desalination capacity reaches 25.78 mg/g. All the initial concentration of NaCl solution, service voltage and influent flow rate have influences on the capacitance desalination capacity.

Key words: deionization of capacitance, MnO₂, graphene aerogel, composite materials

摘要：

选用石墨烯气凝胶（GA）作为载体，负载MnO₂纳米颗粒，构建新型石墨烯气凝胶-MnO₂复合材料（MnGA），并制备电容电极，研究复合材料的电容去离子性能。结果表明，MnO₂在石墨烯片层上可形成一维线状结构，减弱石墨烯片层间的堆叠效应，提升材料电容，从而提高了电极的脱盐性能，最大电容脱盐量达到25.78 mg/g；NaCl溶液的初始浓度、供电电压和进水流速均会对电容脱盐量产生影响。

关键词: 电容去离子化, MnO₂, 石墨烯气凝胶, 复合材料

CLC Number: 

• X703.1