Capacitive deionization (CDI), as a novel, energy-efficient, and environment-friendly desalination technology,
has received substantial attention in the scientific community during the last five decades, while the electrode materials,
acting as the ion storage media, play a vital role during its desalination process. Meanwhile, developing electrode
materials from biomass has been proven to be a feasible strategy due to their abundance in nature, unique microstructure,
as well as feasibility for further modifications. In this review, various bio-mass-based electrode materials and their unique
advantages as CDI electrodes are systematically presented.