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Kwak SH, Kwon SR, Baek S, et al. Densely charged polyelectrolyte-stuffed nanochannel arrays for power generation from salinity gradient. Sci Rep. 2016;6:26416doi: 10.1038/srep26416.
Kwak, S. H., Kwon, S. R., Baek, S., Lim, S. M., Joo, Y. C., & Chung, T. D. (2016). Densely charged polyelectrolyte-stuffed nanochannel arrays for power generation from salinity gradient. Scientific reports, 626416. https://doi.org/10.1038/srep26416
Kwak, Su Hong, et al. "Densely charged polyelectrolyte-stuffed nanochannel arrays for power generation from salinity gradient." Scientific reports vol. 6 (2016): 26416. doi: https://doi.org/10.1038/srep26416
Kwak SH, Kwon SR, Baek S, Lim SM, Joo YC, Chung TD. Densely charged polyelectrolyte-stuffed nanochannel arrays for power generation from salinity gradient. Sci Rep. 2016 May 19;6:26416. doi: 10.1038/srep26416. PMID: 27194475; PMCID: PMC4872233.
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Sci Rep. 2016 May 19;6:26416. doi: 10.1038/srep26416.

Densely charged polyelectrolyte-stuffed nanochannel arrays for power generation from salinity gradient.

Scientific reports

Su Hong Kwak, Seung-Ryong Kwon, Seol Baek, Seung-Min Lim, Young-Chang Joo, Taek Dong Chung

Affiliations

  1. Department of Chemistry, Seoul National University, Seoul 08826, Korea.
  2. Department of Materials Science and Engineering, Seoul National University, Seoul 08826, Korea.
  3. Advanced Institutes of Convergence Technology, Suwon-Si, Gyeonggi-do 16229, Korea.

PMID: 27194475 PMCID: PMC4872233 DOI: 10.1038/srep26416

Abstract

We devised anodized aluminium oxide (AAO) frame-supported polyelectrolytic ion-exchange membranes for the application of electrical power generation systems where salinity differences are present. A series of polyelectrolytic AAO membranes (PAMs) were fabricated as a function of concentration of monomers and cross-linkers. Of the ion-selective PAMs as made, the membranes from the most concentrated monomers and cross-linkers, C-PAM100 and A-PAM100, showed the highest area resistances and permselectivities (the resistances were 4.9 and 2.9 Ω · cm(2), the permseletivities for C-PAM100 and A-PAM100 were 99 and 89%, respectively). The measured resistances and permselectivities allowed the power density to be estimated for C-PAM100 and A-PAM100, 3.5 W/m(2), and experimentally obtained power density using a reverse electrodialysis (RED) stack was 17.3 mW/m(2). In addition, we investigated the influence of an AAO framework on a membrane resistance by comparing the PAMs with polyelectrolyte-stuffed capillaries, revealing that the resistance of the PAM has plenty of potential to be further reduced by optimizing the AAO pore spaces.

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