TY - JOUR
T1 - Nonconjugated Redox-Active Polymer Mediators for Rapid Electrocatalytic Charging of Lithium Metal Oxides
AU - Hatakeyama-Sato, Kan
AU - Masui, Tomomi
AU - Serikawa, Takuma
AU - Sasaki, Yusuke
AU - Choi, Wonsung
AU - Doo, Seok Gwang
AU - Nishide, Hiroyuki
AU - Oyaizu, Kenichi
N1 - Funding Information:
We thank Samsung GRO project for financial support of this work. This work was partially supported by Grants-in-Aid for Scientific Research (Nos. 17H03072, 18K19120, and 19K15638) from MEXT, Japan. The work was also partially supported by Research Institute for Science and Engineering, Waseda University. K.H.-S. is thankful for the financial support from FS research by JXTG Co.
Publisher Copyright:
© 2019 American Chemical Society.
PY - 2019/9/23
Y1 - 2019/9/23
N2 - For rapid charging of lithium-ion batteries, a series of novel electrode-active materials have been studied. However, those materials suffered from replacing conventional metal oxides, such as LiCoO2 and LiFePO4, because of the strict performance criteria for commercialization. As an alternative approach, we propose the hybridization of the conventional inorganic active materials with organic redox-active polymers which are characterized by fast electrode kinetics. A new robust organic-radical-substituted polyether was synthesized to yield one of the highest charge transportabilities of nonconjugated polymers with a charge diffusion coefficient of 10-7 cm2/s. The hybrid electrode of LiFePO4 and a small amount of the polymer was able to be charged within several minutes by virtue of the electrocatalytic oxidation of the metal oxide with the radical polymer. In addition, several 4 V class organic redox-active polymers were synthesized for the hybrid with LiCoO2. After hybridization, the LiCoO2 electrodes could also be charged within several minutes with the reduced overvoltages.
AB - For rapid charging of lithium-ion batteries, a series of novel electrode-active materials have been studied. However, those materials suffered from replacing conventional metal oxides, such as LiCoO2 and LiFePO4, because of the strict performance criteria for commercialization. As an alternative approach, we propose the hybridization of the conventional inorganic active materials with organic redox-active polymers which are characterized by fast electrode kinetics. A new robust organic-radical-substituted polyether was synthesized to yield one of the highest charge transportabilities of nonconjugated polymers with a charge diffusion coefficient of 10-7 cm2/s. The hybrid electrode of LiFePO4 and a small amount of the polymer was able to be charged within several minutes by virtue of the electrocatalytic oxidation of the metal oxide with the radical polymer. In addition, several 4 V class organic redox-active polymers were synthesized for the hybrid with LiCoO2. After hybridization, the LiCoO2 electrodes could also be charged within several minutes with the reduced overvoltages.
KW - lithium-ion battery
KW - organic battery
KW - radical polymer
KW - rapid charging
KW - redox-active polymer
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U2 - 10.1021/acsaem.9b01007
DO - 10.1021/acsaem.9b01007
M3 - Article
AN - SCOPUS:85073154931
SN - 2574-0962
VL - 2
SP - 6375
EP - 6382
JO - ACS Applied Energy Materials
JF - ACS Applied Energy Materials
IS - 9
ER -
