Rocking-Chair Proton Batteries with Conducting Redox Polymer Active Materials and Protic Ionic Liquid Electrolytes

Citations Over TimeTop 10% of 2021 papers

Abstract

Rechargeable batteries that use redox-active organic compounds are currently considered an energy storage technology for the future. Functionalizing redox-active groups onto conducting polymers to make conducting redox polymers (CRPs) can effectively solve the low conductivity and dissolution problems of redox-active compounds. Here, we employ a solution-processable postdeposition polymerization (PDP) method, where the rearrangements ensured by partial dissolution of intermediated trimer during polymerization were found significant to produce high-performance CRPs. We show that quinizarin (Qz)- and naphthoquinone (NQ)-based CRPs can reach their theoretical capacity through optimization of the polymerization conditions. Combining the two CRPs, with the Qz-CRP as a cathode, the NQ-CRP as an anode, and a protic ionic liquid electrolyte, yields a 0.8 V proton rocking-chair battery. The conducting additive-free all-organic proton battery exhibits a capacity of 62 mAh/g and a capacity retention of 80% after 500 cycles using rapid potentiostatic charging and galvanostatic discharge at 4.5 C.

Related Papers

• → The Effect of the Cation π‐Surface Area on the 3D Organization and Catalytic Ability of Imidazolium‐Based Ionic Liquids(2011)42 cited
• → Biodegradable Ionic Liquids: Selected Synthetic Applications(2007)36 cited
• → Manganese Dioxide Allylic and Benzylic Oxidation Reactions in Ionic Liquids(2004)25 cited
• → Pyrolysis of cellulose mixed with ionic liquids 1-butyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide [bmim][TFSI], 1-butyl-3-methylimidazolium tetrafluoroborate [bmim][BF4], and 1-butyl-2,3-dimethylimidazolium tetrafluoroborate [bmmim][BF4](2019)6 cited
• Synthesis of β-enaminones in imidazolium ionic liquids(2010)