“…[6][7][8] Since the pioneer report by Nishide et al,s everal polymers bearing densely populated redox-active moieties have been developed as dendrite-free anodes and the assembled polymer-air batteries equipped with al ow mass loading of redox polymer layer exhibited excellent charge/discharge capability in aqueous electrolyte. [9][10][11][12] More recently,C hen et al assembled ac onjugated quinone polymer onto conducting carbon nanotubes as the anode,w hich improves the ion and charge transfer and thus achieve excellent performance even at arelatively high loading of anode-active polymer. [13] Despite exciting advances,rechargeable polymer-air batteries are still under development due to the limited choices of polymer anodes,c onsidering bifunctional air electrodes have been aggressively studied for metal-air batteries so far.…”
Section: Introductionmentioning
confidence: 99%
“…[13] Despite exciting advances,rechargeable polymer-air batteries are still under development due to the limited choices of polymer anodes,c onsidering bifunctional air electrodes have been aggressively studied for metal-air batteries so far. [14,15] Currently-available polymeric anodes are mainly based on nonporous linear polymers [9][10][11][12][13] with inferior ion transfer and insufficient robustness,t hereby constraining their electrochemical performance especially cycling stability.T hus, developing new robust polymer anodes with excellent reversibility for advanced long-lived polymer-air batteries is of great significance but also ag rand challenge.…”
Herein, we explore an ew redoxd onor-acceptor conjugated microporous polymer (AQ-CMP) by utilizing anthraquinone and benzene as linkers via C-C linkages and demonstrate the first use of CMP as ultralong-lived anodes for rechargeable air batteries.AQ-CMP features an interconnected octupole network, whichaffords not only favorable electronic structure for enhanced electron transport and n-doping activity compared to linear counterpart, but also high density of active sites for maximizing the formula-weight-based redoxc apability.T his coupled with highly cross-linked and porous structure endows AQ-CMP with as pecific capacity of 202 mAh g À1 (96 %o ft heoretical capacity) at 2Ag À1 and % 100 %capacity retention over 60000 charge/discharge cycles. The assembled CMP-air full cell shows as table and high capacity with full capacity recovery after only refreshing cathodes,w hile the decoupled electrolyte and cathode design boosts the dischargevoltage and voltage efficiency to % 1Vand 87.5 %.
“…[6][7][8] Since the pioneer report by Nishide et al,s everal polymers bearing densely populated redox-active moieties have been developed as dendrite-free anodes and the assembled polymer-air batteries equipped with al ow mass loading of redox polymer layer exhibited excellent charge/discharge capability in aqueous electrolyte. [9][10][11][12] More recently,C hen et al assembled ac onjugated quinone polymer onto conducting carbon nanotubes as the anode,w hich improves the ion and charge transfer and thus achieve excellent performance even at arelatively high loading of anode-active polymer. [13] Despite exciting advances,rechargeable polymer-air batteries are still under development due to the limited choices of polymer anodes,c onsidering bifunctional air electrodes have been aggressively studied for metal-air batteries so far.…”
Section: Introductionmentioning
confidence: 99%
“…[13] Despite exciting advances,rechargeable polymer-air batteries are still under development due to the limited choices of polymer anodes,c onsidering bifunctional air electrodes have been aggressively studied for metal-air batteries so far. [14,15] Currently-available polymeric anodes are mainly based on nonporous linear polymers [9][10][11][12][13] with inferior ion transfer and insufficient robustness,t hereby constraining their electrochemical performance especially cycling stability.T hus, developing new robust polymer anodes with excellent reversibility for advanced long-lived polymer-air batteries is of great significance but also ag rand challenge.…”
Herein, we explore an ew redoxd onor-acceptor conjugated microporous polymer (AQ-CMP) by utilizing anthraquinone and benzene as linkers via C-C linkages and demonstrate the first use of CMP as ultralong-lived anodes for rechargeable air batteries.AQ-CMP features an interconnected octupole network, whichaffords not only favorable electronic structure for enhanced electron transport and n-doping activity compared to linear counterpart, but also high density of active sites for maximizing the formula-weight-based redoxc apability.T his coupled with highly cross-linked and porous structure endows AQ-CMP with as pecific capacity of 202 mAh g À1 (96 %o ft heoretical capacity) at 2Ag À1 and % 100 %capacity retention over 60000 charge/discharge cycles. The assembled CMP-air full cell shows as table and high capacity with full capacity recovery after only refreshing cathodes,w hile the decoupled electrolyte and cathode design boosts the dischargevoltage and voltage efficiency to % 1Vand 87.5 %.
“…Previously, we reported quinone redox polymers as an anode‐active material for rechargeable air batteries . The use of organic polymers evades the detrimental dendrite problem and, furthermore, could be used in acidic aqueous electrolytes.…”
Section: Introductionmentioning
confidence: 99%
“…The use of organic polymers evades the detrimental dendrite problem and, furthermore, could be used in acidic aqueous electrolytes. Combined with a conventional Pt/C cathode catalyst we demonstrated a rechargeable polymer–air battery with a quinone polymer as anode that yielded a discharge voltage of 0.30–0.50 V and long life of over 500 cycles of charging/discharging . To achieve higher energy density, removal of conductive additives, and a polymer that can be reduced at a low potential are highly demanded.…”
Organic materials receive increasing attention as environmentally benign and sustainable electrode‐active materials. We present a conducting redox polymer (CRP) based on poly(3,4‐ethylenedioxythiophene) with naphthoquinone pendant group, which is formed from a stable suspension of a trimeric precursor and an oxoammonium cation as oxidant. This suspension allows us to easily coat the polymer onto a current collector, opening up use of roll‐to‐roll processing or ink‐jet printing for electrode preparation. The CRP showed a full capacity of 76 mAh g−1 even at a high C rate of 100 C in acidic aqueous electrolyte. These properties make the CRP a promising candidate as anode‐active material; a polymer–air secondary battery was fabricated with the CRP as anode, a conventional Pt/C catalyst as cathode, and sulfuric acid aqueous solution as electrolyte. This battery yielded a discharge voltage of 0.50 V and showed good cycling stability with 97 % capacity retention after 100 cycles and high rate capabilities up to 20 C.
“…supercapacitors, 19 aqueous batteries 20 and hybrid systems. [21][22][23] Among the different families of OEM, 6 quinones and their derivatives appear to be the most promising type, 24,25 thanks to their high availability and the good electrochemical reversibility of their redox system. 26,27 However, the main drawback of quinone derivatives is their solubility in the organic solvents that are commonly used in lithium-ion batteries.…”
Three of polyanthraquinone sulfide (PAQS) isomers were synthesized, characterized and included in a comparative study of electrochemical performances as organic material cathode. The performances of the 1,5-PAQS, 2,6-PAQS, and 1,8-PAQS...
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