TY - JOUR
T1 - Tetrathiafulvalene as a sustainable cathode with high rate and Long Life-span for aqueous Zinc-ion battery at low temperatures
AU - Wang, Jiayao
AU - Zhang, Xinyi
AU - Yan, Zehua
AU - Rui, Zhen
AU - Yang, Ze
AU - Huang, Yongxin
AU - Deng, Wenwen
N1 - Publisher Copyright:
© 2023 Elsevier B.V.
PY - 2023/3/1
Y1 - 2023/3/1
N2 - Tetrathiafulvalene (TTF) is introduced as a novel and sustainable cathode material for aqueous zinc ion batteries (AZIBs). Based on an anion insertion/desertion reaction, TTF delivers a capacity of 102 mAh g−1 at 1 A g−1 under −20 °C, and obtains a high capacity retention of 96 % after 3500 cycles. Kinetic analysis demonstrates that TTF is more surface-controlled electrochemical process than diffusion-controlled at low temperature. Comprehensive analysis, including ex-situ X-ray diffraction (XRD), Fourier Transform Infrared (FTIR), Raman, Electron Spin-Resonance spectroscopy (ESR) characterization combine with density functional theory (DFT) estimation confirm the high reversibility of the transformation from TTF to TTF+ and TTF2+, when further increase the charging cut-off voltage to 1.6 V, TTF2+ is further oxidized to TTF3+. This work not only offers fundamental understanding for reaction mechanism of tetrathiafulvalene and their homologues in battery uses, but also provides a new electrode choice for AZIBs at low temperatures.
AB - Tetrathiafulvalene (TTF) is introduced as a novel and sustainable cathode material for aqueous zinc ion batteries (AZIBs). Based on an anion insertion/desertion reaction, TTF delivers a capacity of 102 mAh g−1 at 1 A g−1 under −20 °C, and obtains a high capacity retention of 96 % after 3500 cycles. Kinetic analysis demonstrates that TTF is more surface-controlled electrochemical process than diffusion-controlled at low temperature. Comprehensive analysis, including ex-situ X-ray diffraction (XRD), Fourier Transform Infrared (FTIR), Raman, Electron Spin-Resonance spectroscopy (ESR) characterization combine with density functional theory (DFT) estimation confirm the high reversibility of the transformation from TTF to TTF+ and TTF2+, when further increase the charging cut-off voltage to 1.6 V, TTF2+ is further oxidized to TTF3+. This work not only offers fundamental understanding for reaction mechanism of tetrathiafulvalene and their homologues in battery uses, but also provides a new electrode choice for AZIBs at low temperatures.
KW - Aqueous zinc-ion battery
KW - High rate and long life-span
KW - Low temperatures
KW - Tetrathiafulvalene
UR - https://www.scopus.com/pages/publications/85149734299
U2 - 10.1016/j.cej.2023.141649
DO - 10.1016/j.cej.2023.141649
M3 - Article
AN - SCOPUS:85149734299
SN - 1385-8947
VL - 459
JO - Chemical Engineering Journal
JF - Chemical Engineering Journal
M1 - 141649
ER -