Journal
NANO LETTERS
Volume -, Issue -, Pages -Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.nanolett.2c02583
Keywords
battery deionization; seawater; wood; electrode; desalination
Categories
Funding
- National Key Research and Development Program of China [2021YFA1202500]
- Foundation of Shenzhen Science, Technology and Innovation Commission (SSTIC) [JCYJ20200109141625078]
- National Natural Science Foundation of China [21777045, 22006065]
- Natural Science Funds for Distinguished Young Scholars of Guang-dong Province, China [2020B151502094]
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In this study, a highly efficient wood-based BDI electrode was fabricated for seawater desalination. By tuning the redox-active sites and nanoporous structure, the wood electrode showed excellent ion removal capacity. This work demonstrated a novel resource utilization pathway of converting cheap biomass into highly efficient seawater desalination electrodes.
Developing highly efficient advanced battery deionization (BDI) electrode materials at a low cost is vital for seawater desalination. Herein, a high-efficiency wood-based BDI electrode has been fabricated for seawater desalination, benefiting from the self-supporting three-dimensional (3D) nanoporous structure and rich redox-active sites. The finely tuned rich electrochemical redox active C=O groups on the surface of the wood electrode derived from the facile thermochemical conversion of lignin play a crucial role in the Faradaic cation removal dynamics of BDI. Coupling the 3D wood electrode and a polyaniline-modified wood electrode as the cathode and anode, an all-wood-electrode-based deionization battery has been successfully assembled with a state-of-the-art ion removal capacity of up to 164 mg g(-1) in seawater. Our work reported an example of utilizing wood as the BDI electrode via fine-tuning the redox-active sites, demonstrating a novel resource utilization pathway of converting cheap biomass into BDI electrodes for highly efficient seawater desalination.
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