Related Experiment Video
Updated: Mar 22, 2026
Construction and Testing of Coin Cells of Lithium Ion Batteries
Published on: August 2, 2012
A Sulfur Heterocyclic Quinone Cathode and a Multifunctional Binder for a High-Performance Rechargeable Lithium-Ion
Ting Ma1, Qing Zhao1, Jianbin Wang1
1Key Laboratory of Advanced Energy Materials Chemistry and State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin, 300071, China.
Unlabelled:
We report a rational design of a sulfur heterocyclic quinone (dibenzo[b,i]thianthrene-5,7,12,14-tetraone=DTT) used as a cathode (uptake of four lithium ions to form Li4 DTT) and a conductive polymer [poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate)=
Pedot:
PSS) used as a binder for a high-performance rechargeable lithium-ion battery. Because of the reduced energy level of the lowest unoccupied molecular orbital (LUMO) caused by the introduced S atoms, the initial Li-ion intercalation potential of DTT is 2.89 V, which is 0.3 V higher than that of its carbon analog. Meanwhile, there is a noncovalent interaction between DTT and
Pedot:
PSS, which remarkably suppressed the dissolution and enhanced the conductivity of DTT, thus leading to the great improvement of the electrochemical performance. The DTT cathode with the
Pedot:
PSS binder displays a long-term cycling stability (292 mAh g(-1) for the first cycle, 266 mAh g(-1) after 200 cycles at 0.1 C) and a high rate capability (220 mAh g(-1) at 1 C). This design strategy based on a noncovalent interaction is very effective for the application of small organic molecules as the cathode of rechargeable lithium-ion batteries.
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