Effect of electrolyte anions on the cycle life of a polymer electrode in aqueous batteries

Zhang, Ye; Zhao, Lihong; Liang, Yanliang; Wang, Xiaojun; Yao, Yan

doi:10.1016/j.esci.2022.01.002

Cited by 72 publications

(46 citation statements)

References 28 publications

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“…However, their intermittent characteristics trap the integration to public power systems. Electrochemical energy storage/conversion systems such as rechargeable batteries have been regarded as one of the most efficient approaches to regulate the output of electricity, in which safety, cost, and environmental friendliness are the emphasizing factors. , Endowed with such merits, rechargeable batteries that apply the aqueous electrolyte are competitive candidates to coordinate with sustainable energy. − Traditional aqueous lead–acid batteries exhibit low energy density and also generate environmental issues for large-scale applications; Ni–MH batteries are not cost-efficient with concerns of rare earth resources. Due to the affordable/large production, good compatibility with water, and high capacity (820 mA h g –1 ), metal Zn is becoming one of the most promising and widely studied anode materials in aqueous batteries, which can be used in rechargeable Zn-ion batteries, Zn–air batteries, semi-deposition flow batteries, and alkaline Zn–Mn batteries. − However, like all metal anode materials, the repetitive dissolution–precipitation process during cycling leads to dendrite growth and passivation/corrosion of metal.…”

Section: Introductionmentioning

confidence: 99%

Quinone Electrodes for Alkali–Acid Hybrid Batteries

Lü

et al. 2022

J. Am. Chem. Soc.

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Aqueous batteries are promising candidates for large-scale energy storage but face either limited energy density (lead−acid batteries), cost/ resource concerns (Ni−MH batteries), or safety issues due to metal dendrite growth at high current densities (zinc batteries). We report that through designing electrochemical redox couples, quinones as intrinsic dendrite-free and sustainable anode materials demonstrate the theoretical energy density of 374 W h kg −1 coupling with affordable Mn 2+ /MnO 2 redox reactions on the cathode side. Due to the fast K-ion diffusion in the electrolyte, low K-ion desolvation energy at the interface, and fast quinone/phenol reaction, the optimized poly(1,4-anthraquinone) in the KOH electrolyte shows specific capacities of 295 mA h g −1 at 300 C-rate and 225 mA h g −1 at 240 mA cm −2 . Further constructed practical aqueous batteries exhibit an output voltage of 2 V in alkali−acid hybrid electrolyte systems with exceptional electrochemical kinetics, which can release/ store over 95% of the theoretical capacity in less than 40 s (25 000 mA g −1 ). The scaled Ah level aqueous battery with the upgradation of interfacial chemistry on the electrode current collector exhibits an overall energy density of 92 W h kg −1 , exceeding commercial aqueous lead−acid and Ni−MH batteries. The rapid response, intrinsic dendrite-free existence, and cost efficiency of quinone electrodes provide promising application interests for regulating the output of the electricity grid generated by intermittent solar and wind energy.

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Section: Introductionmentioning

confidence: 99%

Quinone Electrodes for Alkali–Acid Hybrid Batteries

Lü

et al. 2022

J. Am. Chem. Soc.

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“…In a mixed system of an anionic surfactant and a nonionic surfactant, on the one hand, the existence of EO groups can reduce the electrostatic repulsion between anionic head groups, and the surfactants are closely arranged at the interface. On the other hand, when multivalent counterions exist, EO groups can hinder the transition of the surfactant at the interface from monolayer to multilayer, and when the concentration of EO groups remains unchanged, there is a greater concentration of multivalent counterions and more adsorption layers. − Therefore, we believe that in the O/W emulsion, due to the low concentration of Fe(III) species compared with the former, EO groups play a major role in hindering the formation of a multilayer structure of the surfactant at the interface, resulting in a low strength of the interfacial film. Therefore, compared with the O/W emulsion without EO groups, its stability is poor.…”

Section: Resultsmentioning

confidence: 99%

Effect of Fe(III) Species on the Stability of a Water-Model Oil Emulsion with an Anionic Sulfonate Surfactant as an Emulsifier

Zheng

Wang

et al. 2022

ACS Omega

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The stability of an emulsion has an important effect on enhancing oil recovery. However, the effect of ions with different valences on the stability of the emulsion emulsified by an ionic surfactant is not fully understood. In this study, the effects of Fe(III) species on the stability, microscopic morphology of droplets, interfacial properties, and rheological properties of water-model oil emulsions emulsified by sodium dodecyl benzenesulfonate (SDBS) were explored. The effect of Fe(III) species on the stability of a W/O crude oil emulsion was also explored. The stability experiment results show that the addition of the Fe(III) species impairs the stability of the model oil-in-water (O/W) emulsion, in which the O/W model oil emulsion is inverted to a water-in-model oil (W/O) emulsion at ∼99 ppm. With the increase of Fe(III) species concentration, stable W/O model oil and W/O crude oil emulsions are obtained. The rheological results indicated that the existence of the Fe(III) species has a remarkable effect on the viscosity and viscoelastic behaviors of the water-model oil emulsion. The calculation results based on Derjaguin−Landau−Verwey−Overbeek (DLVO) theory are in accord with the stability experiment results. Furthermore, the addition of EO groups makes the phase inversion point appear at a higher Fe(III) species concentration, forming a more stable W/O model oil emulsion and a more unstable O/W model oil emulsion. The experimental results are helpful to comprehensively understand the effect of Fe(III) species on the stability of an emulsion emulsified by an anionic sulfonate surfactant, which can help to enhance the oil recovery.

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“…Nevertheless, these molecular species tend to dissolve in electrolyte solvents, such as carbonates and ethers, leading to rapid performance degradation and a short lifetime . To avoid this dissolution problem, redox-active segments are directly polymerized or incorporated as pendant groups into polymer chains/networks to afford insoluble solids. − However, these redox-active polymers often pack efficiently in a dense amorphous solid state, so that ion transport and electron transfer are slower relative to their molecular analogues, resulting in ineffective utilization of redox sites within the materials and poor electrochemical performance at the device level.…”

Section: Introductionmentioning

confidence: 99%

Solution-Processable Redox-Active Polymers of Intrinsic Microporosity for Electrochemical Energy Storage

et al. 2022

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Redox-active organic materials have emerged as promising alternatives to conventional inorganic electrode materials in electrochemical devices for energy storage. However, the deployment of redox-active organic materials in practical lithium-ion battery devices is hindered by their undesired solubility in electrolyte solvents, sluggish charge transfer and mass transport, as well as processing complexity. Here, we report a new molecular engineering approach to prepare redox-active polymers of intrinsic microporosity (PIMs) that possess an open network of subnanometer pores and abundant accessible carbonyl-based redox sites for fast lithium-ion transport and storage. Redox-active PIMs can be solution-processed into thin films and polymer− carbon composites with a homogeneously dispersed microstructure while remaining insoluble in electrolyte solvents. Solutionprocessed redox-active PIM electrodes demonstrate improved cycling performance in lithium-ion batteries with no apparent capacity decay. Redox-active PIMs with combined properties of intrinsic microporosity, reversible redox activity, and solution processability may have broad utility in a variety of electrochemical devices for energy storage, sensors, and electronic applications.

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Effect of electrolyte anions on the cycle life of a polymer electrode in aqueous batteries

Cited by 72 publications

References 28 publications

Quinone Electrodes for Alkali–Acid Hybrid Batteries

Quinone Electrodes for Alkali–Acid Hybrid Batteries

Effect of Fe(III) Species on the Stability of a Water-Model Oil Emulsion with an Anionic Sulfonate Surfactant as an Emulsifier

Solution-Processable Redox-Active Polymers of Intrinsic Microporosity for Electrochemical Energy Storage

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