Cellulose derived graphenic fibers for capacitive desalination of brackish water and preparation method of the electrode thereof

摘要

The present invention relates to a graphite reinforced-cellulose derived carbon fiber electrode prepared via a simple layer-by-layer stacking method for capacitive deionization (CDI) of brackish water. The reinforced graphite structure increases the conductivity of the electrode and results in excellent electro-adsorption of NaCl (13.1 mg/g). The high electro-adsorption performance is attributed to the layer-by-layer assembly of the hybrid electrode that allows ions to move easily on the carbon-graphite electrode. The grapheme carbon fiber-like surface morphology of the electrode could also provide it resistance against bacterial adhesion and proliferation. The preparation methodology of the carbon fiber electrode opens up a new avenue for the development of high-performance and cost-effective CDI electrodes from renewable sources.