Effect of potential range on electrochemical performance of polyaniline as a component of lithium battery electrodes

Kozarenko, Olga A.; Dyadyun, Vyacheslav S.; Papakin, Mykhailo S.; Posudievsky, O. Yu.; Koshechko, V. G.; Pokhodenko, V. D.

doi:10.1016/j.electacta.2015.10.058

Cited by 16 publications

(8 citation statements)

References 54 publications

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“…The most well‐known p‐type organic cathode materials are conducting polymers (e. g., polyaniline, [11,12] polytriphenylamine, [13] and polypyrrole [14] ) and nitroxyl radical polymers (e. g., PTMA [15] ). In recent years, researchers’ interest also shifts to polymers based on various electroactive heteroaromatics, including N ‐substituted phenazine, [16–19] conjugated pyridine dimer, [20] phenothiazine, [18,21–31] phenoxazine, [32] and thianthrene [33,34] .…”

Section: Introductionmentioning

confidence: 99%

Facile Synthesis of Polyphenothiazine as a High‐Performance p‐Type Cathode for Rechargeable Lithium Batteries

Wang

Han

et al. 2021

ChemSusChem

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p‐Type electroactive polymers are promising cathodes for dual‐ion batteries but cost‐effective candidates are still lacking. In this study, the p‐type polymer polyphenothiazine (PPTZ) is synthesized by a facile one‐step oxidation polymerization from the low‐cost phenothiazine (PTZ) monomer. As a cathode for rechargeable lithium batteries, PPTZ shows superior electrochemical performance to previously reported PTZ‐based polymers with complicated structures and syntheses. For example, PPTZ has a high reversible capacity of 157 mAh g−1 within 2.5–4.3 V vs. Li+/Li with an average discharge voltage of 3.5 V, and a high capacity retention of 77 % after 500 cycles. The highly reversible one‐electron redox mechanism of PPTZ is also investigated in detail by electrochemical testing, ex situ FT‐IR and X‐ray photoelectron spectroscopy, and DFT calculations. PPTZ has the potential to serve as an attractive p‐type cathode material for practical applications and the facile synthesis may be also extended to other polymer cathodes based on N‐heteroaromatic units.

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Section: Introductionmentioning

confidence: 99%

Facile Synthesis of Polyphenothiazine as a High‐Performance p‐Type Cathode for Rechargeable Lithium Batteries

Wang

Han

et al. 2021

ChemSusChem

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“…Such polymers have similar electronic, magnetic and optical properties to metals, whereas retaining the flexibility and processibility of conventional polymers. The outstanding properties afford PANI with potential practical applications such as in chemical sensor devices, light‐emitting diodes, electromagnetic interference shielding materials, anticorrosion coatings, separation membranes, lithium‐ion battery electrodes, supercapacitors, electromechanical actuators, and so forth.…”

Section: Introductionmentioning

confidence: 99%

Preparation and application of polyaniline nanofibers: an overview

Wang

2018

Polymer International

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Polyaniline (PANI) nanofibers have enhanced water processibility and improved sensitivity and response time when exposed to chemical vapors, and unique advantages in other fields including electric devices and corrosion inhibition. Therefore, PANI nanofibers have attracted great interest and have potential for many commercial applications. In this paper, the advantages, formation mechanism, characteristics and factors influencing various methods for preparing PANI nanofibers are described in detail. Their conductive properties and mechanism are briefly introduced. Finally, the potential applications of PANI nanofibers are elaborated in many fields such as gas sensors, capacitors, electrode materials for cells, removal of contaminants from water, corrosion inhibition, enzyme immobilization, Schottky diodes, and so on. © 2018 Society of Chemical Industry

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“…[6] During the 1980s,P ANI was in fact one of the first organic materials tested as active material in electrochemical cells,a nd it showed an exceptional stability on cycling and excellent coulombic efficiency. [8] Even though some effort has been put into increasing the specific capacity of PA NI by improving the reversibility of the ES-PNS redox transition in non-aqueous electrolytes,t he most efficient strategy to date requires the use of high-molecular-weight anionic counterions,w hich limits the practical capacity of the PA NI electrodes. [2b] In practice,the capacity of PA NI in anonprotic environment is usually limited to half of that value due to the irreversible character of the redox transition between ES and PNS;either PNS is not chemically stable (PNS is too strong as an acid or electrophile) and reacts with the electrolyte,o rt he overpotential to incorporate the charge compensating anions is too high and the completely oxidized state cannot be reached within the stability window of the electrolyte.…”

mentioning

confidence: 99%

“…[2b] In practice,the capacity of PA NI in anonprotic environment is usually limited to half of that value due to the irreversible character of the redox transition between ES and PNS;either PNS is not chemically stable (PNS is too strong as an acid or electrophile) and reacts with the electrolyte,o rt he overpotential to incorporate the charge compensating anions is too high and the completely oxidized state cannot be reached within the stability window of the electrolyte. [8] Even though some effort has been put into increasing the specific capacity of PA NI by improving the reversibility of the ES-PNS redox transition in non-aqueous electrolytes,t he most efficient strategy to date requires the use of high-molecular-weight anionic counterions,w hich limits the practical capacity of the PA NI electrodes. [9] Compared to covalent functionalization reactions of PA NI, the deprotonation-induced n-doping of PA NI has been studied far too low,a si ti mplies the occurrence of formally negatively charged nitrogen atoms (nitrenes), the strong basicity of which requires strictly aprotic conditions.…”

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confidence: 99%

Lithium n‐Doped Polyaniline as a High‐Performance Electroactive Material for Rechargeable Batteries

et al. 2017

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The discovery of conducting lithium-doped polyaniline with reversible redox chemistry allows simultaneous unprecedented capacity and stability in a non-aqueous Li battery. This compound (lithium emeraldinate) was synthesized by lithium-proton exchange on the emeraldine base in an anhydrous lithium-based electrolyte. A combination of UV/Vis-NIR spectroelectrochemistry, XPS, FTIR, and EQCM characterization allowed a unified description of the chemical and electrochemical behavior, showing facile charge delocalization of the doped states and the reversibility of the redox processes in this form of polyaniline. From a practical point of view, lithium emeraldinate behaves as a high-capacity organic active material (230 mAh g ) that enables preparation of relatively thick composite electrodes with a low amount of carbon additives and high energy density (460 Wh kg ). Concomitantly, at 1C rate, 400 cycles were achieved without significant capacity loss, while the coulombic efficiency is greater than 99 %.

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Effect of potential range on electrochemical performance of polyaniline as a component of lithium battery electrodes

Cited by 16 publications

References 54 publications

Facile Synthesis of Polyphenothiazine as a High‐Performance p‐Type Cathode for Rechargeable Lithium Batteries

Facile Synthesis of Polyphenothiazine as a High‐Performance p‐Type Cathode for Rechargeable Lithium Batteries

Preparation and application of polyaniline nanofibers: an overview

Lithium n‐Doped Polyaniline as a High‐Performance Electroactive Material for Rechargeable Batteries

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