TY - JOUR
T1 - Full Organic Aqueous Battery Based on TEMPO Small Molecule with Millimeter-Thick Electrodes
AU - Perticarari, Sofia
AU - Grange, Elodie
AU - Doizy, Tom
AU - Pellegrin, Yann
AU - Quarez, Eric
AU - Oyaizu, Kenichi
AU - Fernandez-Ropero, Antonio Jesus
AU - Guyomard, Dominique
AU - Poizot, Philippe
AU - Odobel, Fabrice
AU - Gaubicher, Joël
N1 - Publisher Copyright:
© 2019 American Chemical Society.
PY - 2019/3/26
Y1 - 2019/3/26
N2 - Thick electrodes with sodium and even anion intercalation organic compounds integrated in a neutral-pH aqueous battery offer unique advantages in terms of round trip efficiency, environmental impact, and scalability for off- or on-grid renewable energy storage. Herein, we report the first anion-rocking chair/dual-ion organic battery. The latter reaches 35 Wh/kg materials at a C/8 rate. It shows remarkable cyclability and coulombic efficiency in a cheap and neutral NaClO 4 electrolyte pouch cell with highly loaded millimeter-thick electrodes (5 mAh/cm 2 ). This achievement is based on a thorough study of a commercial 2,2,6,6-tetramethylpiperidinyl-N-oxyl (TEMPO) (TEMPO) benzene derivative, namely, 4-hydroxy TEMPO benzoate, and its naphthalene analog (4-carboxy TEMPO naphthalate) as positive electrode materials and a bipyridinium-naphthalene oligomer as the negative electrode. Combined UV-vis spectroelectrochemistry and operando X-ray diffraction account for the much improved cyclability of the hydrophobic 4-carboxy TEMPO naphthalate at the expense of a lower specific capacity. This trend is reversed in the case of the 4-hydroxy TEMPO benzoate derivative. Results show that the kinetic limitations of 4-hydroxy TEMPO benzoate are associated with the surrounding composite electrode, whereas inner-grain ionic and/or electronic transports play a decisive role for 4-carboxy TEMPO naphthalate.
AB - Thick electrodes with sodium and even anion intercalation organic compounds integrated in a neutral-pH aqueous battery offer unique advantages in terms of round trip efficiency, environmental impact, and scalability for off- or on-grid renewable energy storage. Herein, we report the first anion-rocking chair/dual-ion organic battery. The latter reaches 35 Wh/kg materials at a C/8 rate. It shows remarkable cyclability and coulombic efficiency in a cheap and neutral NaClO 4 electrolyte pouch cell with highly loaded millimeter-thick electrodes (5 mAh/cm 2 ). This achievement is based on a thorough study of a commercial 2,2,6,6-tetramethylpiperidinyl-N-oxyl (TEMPO) (TEMPO) benzene derivative, namely, 4-hydroxy TEMPO benzoate, and its naphthalene analog (4-carboxy TEMPO naphthalate) as positive electrode materials and a bipyridinium-naphthalene oligomer as the negative electrode. Combined UV-vis spectroelectrochemistry and operando X-ray diffraction account for the much improved cyclability of the hydrophobic 4-carboxy TEMPO naphthalate at the expense of a lower specific capacity. This trend is reversed in the case of the 4-hydroxy TEMPO benzoate derivative. Results show that the kinetic limitations of 4-hydroxy TEMPO benzoate are associated with the surrounding composite electrode, whereas inner-grain ionic and/or electronic transports play a decisive role for 4-carboxy TEMPO naphthalate.
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U2 - 10.1021/acs.chemmater.8b03282
DO - 10.1021/acs.chemmater.8b03282
M3 - Article
AN - SCOPUS:85062838624
SN - 0897-4756
VL - 31
SP - 1869
EP - 1880
JO - Chemistry of Materials
JF - Chemistry of Materials
IS - 6
ER -