期刊
JOURNAL OF MATERIALS CHEMISTRY
卷 22, 期 31, 页码 15556-15561出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c2jm32207b
关键词
-
资金
- Special Project for Nanotechnology of Shanghai [1052nm02700]
In this paper, reduced graphene oxide (RGO) and activated carbon (AC) composites (GAC) have been synthesized by a facile chemical method for the capacitive removal of salt ions from brackish water. The as-prepared composites have been characterized by scanning electron microscopy, N-2 adsorption-desorption and cyclic voltammetry. The GAC composite with 20 wt% graphene (GAC-20) exhibits the best electrochemical performance among all the samples, with a specific capacitance of 181 F g(-1). The electrosorption capacity of the GAC-20 electrode is found to be much higher than that of the AC electrode, indicating that RGO can serve as a flexible bridge to form a plane-to-point'' (RGO-to-AC) conducting network, which is beneficial for decreasing the aggregation of AC particles, and improves the electron transfer within the composite electrode. GAC composite should be a promising candidate as an electrode material for capacitive deionization (CDI) applications.
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