Reversible interaction of 1-butyl-1-methylpyrrolidinium cations with 5,7,12,14-pentacenetetrone from a pure ionic liquid electrolyte for dual-ion batteries

Abstract

The graphite//5,7,12,14-pentacenetetrone organic dual-ion batteries display two well-defined discharge plateaus at 2.4 and 1.8 V, and a high capacity retention of 92.2% after 100 cycles.

An Ultrahigh Rate Ionic Liquid Dual-Ion Battery Based on a Poly(anthraquinonyl sulfide) Anode

“…Recently, owing to the non-flammability, metal-free, and excellent electrochemical stability, ionic liquid electrolytes have attracted increasing attention. , Some progress has been achieved in exploring high-performance DIBs based on pure ionic liquid electrolytes, mainly including 1-ethyl-3-methylimidazolium bis­(trifluoromethylsulfonyl)­imide (EmimTFSI), 1,2-dimethyl-3-propylimidazolium chloroaluminate [(DMPI)­(AICI 4 )], 1-butyl-1-methylpiperidiniumbis­(trifluoromethylsulfonyl)­imide (PP 14 TFSI), and 1-butyl-1-methylpyrrolidinium bis­(trifluoromethylsulfonyl)­imide (Pyr 14 TFSI). , However, the poor compatibility of the large cations with graphite causes the expansion and exfoliation of graphite, leading to a low Coulombic efficiency and poor cycling performance, which will restrict further application. , Therefore, it is necessary to make every effort to develop novel hosting materials for large cations.…”

“…Furthermore, a symmetric DIB was fabricated by applying CuTAPc both as a cathode and anode, and a high energy density was obtained (239 Wh kg –1 ). Moreover, in our previous work, a carbonyl compound (5,7,12,14-pentacenetetrone) was chosen as the anode material for pure IL-DIBs, and the DIBs with Pyr 14 TFSI ionic liquid exhibited the best electrochemical performance . Unfortunately, despite the fact that a considerable specific discharge capacity (164.5 mA h g –1 ) and low self-discharge rate were achieved, the cycle performance and rate performance of the battery still needed to be improved.…”

Graphene‐Based Conductive Networks to Enhance the Performance of Polyimide Anode Materials for Dual‐Ion Batteries

“…However, there are few reports on organic materials combined with organic cations. [17] Organic materials are prone to solubility in electrolytes and the finite conductivity further limits the rate performance. Because organic electrode materials are mostly amorphous, the overlapping defects of van der Waals forces and electron clouds result in low electron conductivity.…”

Cu3(PO4)2: Novel Anion Convertor for Aqueous Dual-Ion Battery

“…Thereafter, continuous progress is made to the development of dual-ion batteries [12][13][14]. Although traditional dual-ion batteries using organic electrolytes (including ionic liquid electrolytes) exhibit high safety, high working voltages (normally > 3 V), and reasonable specific capacity (~ 80 mAh g −1 ), the flammability and toxicity of organic electrolytes make them suffer from the safety issues [13,[15][16][17][18][19][20][21][22]. These problems hinder their wide application.…”