Halogenated Quinone Electrode Material for Electricity Storage
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Solution Overview
Problem
Quinone-based compounds or hydroquinone-based compounds used in electricity storage devices are prone to elution from porous bodies, reducing the device's lifetime.
Innovation Solution
Incorporating quinone or hydroquinone with a halogen group as active materials supported by porous bodies, such as activated carbon, to reduce elution and enhance electrode stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If quinone-based compounds or hydroquinone-based compounds are used as active materials supported by porous bodies, then the electricity storage device can achieve rocking-chair electrochemical capacitor functionality with proton conduction and minimize metal use, but the quinone-based compounds or hydroquinone-based compounds are eluted from the porous body, reducing the device lifetime
Solution Approach 1:
The invention introduces halogen groups (fluoro, chloro, bromo, or iodo) onto the quinone-based or hydroquinone-based compounds, fundamentally changing their chemical parameters. This modification increases the molecular weight and enhances the interaction between the active material and the porous body support, thereby reducing elution. The halogen substitution maintains the electrochemical activity while improving retention, directly addressing the contradiction between device lifetime and substance loss.
Solution Approach 2:
The invention creates a composite material system where halogenated quinone-based or hydroquinone-based compounds are combined with porous bodies (such as activated carbon, carbon nanotubes, or graphene). This composite structure provides both the electrochemical functionality of the quinone/hydroquinone and the mechanical support and retention properties of the porous body. The composite approach allows the active material to be firmly anchored while maintaining its electrochemical performance, resolving the elution issue without sacrificing device functionality.
2Object-generated harmful factors
If organic-based substances are used for both positive and negative electrodes to minimize metal use, then the device can avoid rare elements and toxic substances, but the organic compounds are prone to elution from the porous body
Solution Approach 1:
By introducing halogen groups into the organic quinone-based or hydroquinone-based compounds, the invention modifies their physical and chemical parameters including molecular weight, polarity, and interaction strength with the porous support. These parameter changes reduce elution tendency while maintaining the organic, metal-free composition that avoids rare elements and toxic substances.
Solution Approach 2:
The invention applies local quality modification by selectively introducing halogen groups at specific positions on the quinone or hydroquinone molecular structure. This localized chemical modification enhances the interaction with the porous body at critical points while preserving the overall organic nature and electrochemical functionality of the compound, thereby reducing elution without compromising the environmentally friendly design.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This configuration prolongs the lifetime of electricity storage devices by minimizing material loss and maintaining high energy density and performance across charge/discharge cycles.
Implementation Method 1
a porous body supporting the active material
Data Source
AI summary
An electrode material for electricity storage devices includes: an active material including at least one of quinone having a halogen group and hydroquinone having a halogen group; and a porous body supporting the active material.