TY - JOUR
T1 - Hydrophilic Organic Redox-Active Polymer Nanoparticles for Higher Energy Density Flow Batteries
AU - Hatakeyama-Sato, Kan
AU - Nagano, Takashi
AU - Noguchi, Shiori
AU - Sugai, Yota
AU - Du, Jie
AU - Nishide, Hiroyuki
AU - Oyaizu, Kenichi
N1 - Funding Information:
This work was partially supported by Grants-in-Aid for Scientific Research (17H03072, 18K19120, 18H05515, 18H03921, and 18H05983) from MEXT, Japan. K.H.-S. acknowledges the financial support from FS research by JXTG Co. The work was partially supported by the Research Institute for Science and Engineering, Waseda University.
Publisher Copyright:
© 2019 American Chemical Society.
PY - 2019/2/8
Y1 - 2019/2/8
N2 - Hydrophilic redox-active polymer nanoparticles with different redox potentials and radii were synthesized via the dispersion polymerization to yield their stable dispersion in aqueous electrolyte media as promising catholytes and anolytes in redox flow batteries. Despite the small physical diffusion coefficient (10-9 cm2/s) of the nanosized particles, the sufficiently large coefficient for charge transfer within the polymer particle dispersion (10-7 cm2/s) was observed as a result of the fast electron propagation throughout the polymer particles. Redox flow cells were fabricated using TEMPO-, viologen-, or diazaanthraquinone-substituted polymer nanoparticles as active materials. The reversible charge/discharge over 50 cycles was achieved even at a high concentration of the redox units (1.5 M), which exceeded the limitation of the solubility of the corresponding dissolved species.
AB - Hydrophilic redox-active polymer nanoparticles with different redox potentials and radii were synthesized via the dispersion polymerization to yield their stable dispersion in aqueous electrolyte media as promising catholytes and anolytes in redox flow batteries. Despite the small physical diffusion coefficient (10-9 cm2/s) of the nanosized particles, the sufficiently large coefficient for charge transfer within the polymer particle dispersion (10-7 cm2/s) was observed as a result of the fast electron propagation throughout the polymer particles. Redox flow cells were fabricated using TEMPO-, viologen-, or diazaanthraquinone-substituted polymer nanoparticles as active materials. The reversible charge/discharge over 50 cycles was achieved even at a high concentration of the redox units (1.5 M), which exceeded the limitation of the solubility of the corresponding dissolved species.
KW - energy storage
KW - organic battery
KW - radical polymer
KW - redox flow battery
KW - redox-active polymer
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U2 - 10.1021/acsapm.8b00074
DO - 10.1021/acsapm.8b00074
M3 - Article
AN - SCOPUS:85072896942
SN - 2637-6105
VL - 1
SP - 188
EP - 196
JO - ACS Applied Polymer Materials
JF - ACS Applied Polymer Materials
IS - 2
ER -