N-Phenyl naphthalene diimide pendant polymer as a charge storage material with high rate capability and cyclability

In times of spreading mobile devices, organic batteries represent a promising approach to replace the well‐established lithium‐ion technology to fulfill the growing demand for small, flexible, safe, as well as sustainable energy storage solutions. In the last years, large efforts have been made regarding the investigation and development of batteries that use organic active materials since they feature superior properties compared to metal‐based, in particular lithium‐based, energy‐storage systems in terms of flexibility and safety as well as with regard to resource availability and disposal. This Review compiles an overview over the most recent studies on the topic. It focuses on the different types of applied active materials, covering both known systems that are optimized and novel structures that aim at being established.

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Section: Methodsmentioning

confidence: 99%

“…Thus, aromatic imides are still among the most popular materials for organic battery electrodes. They allow the construction of cells that feature very stable capacities over several hundreds or even thousands of cycles . Furthermore, they were successfully applied in all‐organic cells, in particular in combination with polytriphenylamines .…”

Section: Methodsmentioning

confidence: 99%

Sustainable Energy Storage: Recent Trends and Developments toward Fully Organic Batteries

2019

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“…To solve these problems, which are particular to metal–air secondary batteries, we have recently proposed polymer–air secondary batteries where the anode-active material is an organic redox polymer and the electrolyte is an acidic aqueous solution. − Organic redox polymers have a redox molecule as part of their repeating unit in high density, and since they are expected to achieve large current propagation (rapid charge transportation), research into their basic elucidation − and development for their application as electrode-active materials − are in progress. In particular, quinone-based redox polymers are robust even in acidic aqueous electrolytes and show reversible redox capability. − A polymer–air secondary battery that used these redox polymers as the anode-active material and an acidic aqueous solution as the electrolyte showed high cyclability. − Furthermore, unlike conventional metal–air batteries, this battery does not require the addition of metal salts to the electrolyte but only uses an acidic aqueous solution as the electrolyte; therefore, this polymer-based battery has the potential to increase the entire battery capacity.…”

Section: Introductionmentioning

confidence: 99%

Hydrophilic Anthraquinone-Substituted Polymer: Its Environmentally Friendly Preparation and Efficient Charge/Proton-Storage Capability for Polymer–Air Secondary Batteries

et al. 2021

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Organic redox-active materials have been extensively studied as electrode-active materials to enable innovative battery designs with low environmental burdens. Facile condensation of 4,5-dihydroxyanthraquinone-2-carboxylic acid and poly(allylamine) in water produces hydrophilic 1,8-dihydroxyanthraquinone (DHA)-substituted poly(allylamine) (PDHA). Its high hydrophilicity originates from the poly(allylamine) main chain, and the distorted structure of the DHA inhibits intermolecular stacking of the polymer side chain. This made it possible to achieve a high electron and proton diffusion coefficient of 10–11 cm2/s, which is an order of magnitude higher than that of conventional redox polymers that have one-step, two-electron redox capability. The electrode, composed of appropriately synthesized PDHA, showed a full capacity of 140 mAh g–1 with excellent cyclability (>97% capacity maintenance after 500 cycles) and high rate capabilities (e.g., 120 C) in an acidic aqueous electrolyte under inert gas. These electrochemical properties were maintained even in air, making PDHA a promising candidate for a robust, electrode-active material. A polymer–air secondary battery was fabricated with PDHA, Pt/C, and a 0.5 M H2SO4 aqueous solution as the anode material, cathode material, and electrolyte, respectively, without any separator, inert gas, or strict sealing. This open-air battery displayed a discharge voltage of 1.05 V, with high cyclability greater than 500 cycles and high rate capabilities (e.g., 60 C), demonstrating a new battery concept and potential for large-scale applications.

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“…Redox polymers bear a redox-active group in their repeat units. Their densely populated redox sites enable them to feature high charge-transport and charge-storage capabilities. − The utilization of organic redox polymers as anodes and acidic aqueous solutions as electrolytes resolved the detrimental dendrite problem and the carbonate clogging, respectively. The polymer–air secondary battery composed of a redox polymer bearing 2,5-dihydroxy-1,4-benzoquinone as anode, Pt/C electrode as conventional cathode, and H 2 SO 4 aqueous solution as electrolyte displayed a high cyclability of >500 cycles and high rate capability (full capacity even at 10 C) with a voltage of 0.40 V during discharging.…”

Section: Introductionmentioning

confidence: 99%

Charge- and Proton-Storage Capability of Naphthoquinone-Substituted Poly(allylamine) as Electrode-Active Material for Polymer–Air Secondary Batteries

Oka

Murao

Kobayashi

et al. 2020

ACS Appl. Energy Mater.

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1,4-Naphthoquinone (NQ) undergoes a two electron and two proton redox process in one step at a potential of −0.05 V (vs Ag/ AgCl) in 0.05 M H 2 SO 4 aqueous solution. Its heterogeneous electron transfer rate constant is comparable to those of electrochemically reversible redox-active molecules. Therefore, NQ is a potential electrode-active material candidate in acidic aqueous electrolyte. Simple nucleophilic substitution of 2-bromo-1,4-naphthoquinone and poly-(allylamine) yields NQ-substituted poly(allylamine) (PNQ), enabling us to adjust the hydrophilicity of the redox polymer according to the NQ introduction rate. A polymer−air secondary battery composed of the PNQ anode, the Pt/C cathode, and 0.05 M H 2 SO 4 aqueous electrolyte displayed high cyclability (>100 cycles) and C-rate capability (∼15 C) with a moderate voltage of 0.8 V during discharging.

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N-Phenyl naphthalene diimide pendant polymer as a charge storage material with high rate capability and cyclability

Abstract: Abstract

Cited by 19 publications

References 29 publications

Sustainable Energy Storage: Recent Trends and Developments toward Fully Organic Batteries

Sustainable Energy Storage: Recent Trends and Developments toward Fully Organic Batteries

Hydrophilic Anthraquinone-Substituted Polymer: Its Environmentally Friendly Preparation and Efficient Charge/Proton-Storage Capability for Polymer–Air Secondary Batteries

Charge- and Proton-Storage Capability of Naphthoquinone-Substituted Poly(allylamine) as Electrode-Active Material for Polymer–Air Secondary Batteries

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