Meta-Solid-State Battery Electrode Carbon Additive Interface
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Solution Overview
Problem
Conventional batteries with liquid electrolytes are flammable, corrosive, and have high interfacial resistance, hindering the development of solid-state batteries due to poor ionic transport across interfaces.
Innovation Solution
A meta-solid-state battery with a gel polymer-based electrolyte and carbon additives, such as graphene, is developed to reduce charge transfer resistance and enhance ionic and electronic conductivity, improving the interface between electrodes and electrolytes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If liquid electrolytes are used in conventional batteries, then ionic conductivity is achieved, but safety deteriorates due to flammability and corrosion
Solution Approach 1:
The patent changes the physical state of the electrolyte from liquid to solid gel polymer, fundamentally altering the safety parameters while maintaining ionic conductivity. The gel polymer electrolyte eliminates flammability and corrosion issues inherent in liquid electrolytes while preserving the necessary ionic transport properties for battery operation.
Solution Approach 2:
The patent uses a composite gel polymer electrolyte system that combines the safety advantages of solid polymers with the ionic conductivity of gel structures. This composite approach allows the electrolyte to achieve both safety (non-flammable, non-corrosive) and functional performance (ionic conductivity) simultaneously.
2Reliability
If solid-state electrolytes are used, then safety is improved, but interfacial resistance increases hindering ionic transport
Solution Approach 1:
The patent applies local quality by incorporating carbon additives specifically at the electrode-electrolyte interface regions. This localized enhancement of electronic conductivity and contact quality at the interfaces addresses the interfacial resistance problem without compromising the overall safety advantages of the solid-state gel polymer electrolyte system.
Solution Approach 2:
The carbon additives act as intermediary materials between the electrode active materials and the gel polymer electrolyte. These intermediaries improve the interfacial contact and reduce resistance to ionic transport, facilitating better charge transfer while maintaining the safety benefits of the solid-state system.
3Object-affected harmful factors
If carbon additives are added to electrodes, then charge transfer resistance is reduced, but electrode composition complexity increases
Solution Approach 1:
The patent optimizes the concentration parameters of carbon additives in the electrode compositions. By carefully controlling the amount and type of carbon additives, the system achieves reduced charge transfer resistance while managing the complexity of electrode composition. The gel polymer electrolyte itself also undergoes parameter optimization to balance ionic conductivity with compositional simplicity.
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
The meta-solid-state battery achieves reduced charge transfer resistance, increased discharge time, and enhanced cycle life, demonstrating improved performance compared to conventional batteries with liquid electrolytes.
Implementation Method 1
solid-state batteries can be fabricated into thin film structures, which can significantly reduce the battery weight and size. However, a major hurdle for developing a successful solid-state battery is the minimization of the resistance between the electrodes and the solid-state electrolyte. A high interfacial resistance hinders the ionic transport across interfaces
Implementation Method 2
Each of the cathode and anode electrodes contain: an active material in an amount ranging from approximately 70% to 99.98% by weight, a carbon additive in an amount ranging from approximately 0.01% to 20% by weight
Implementation Method 3
A method for producing an electrode for a meta-solid-state battery includes steps for obtaining a plurality of materials for the electrode, mixing the plurality of materials to form a mixture, disposing the mixture on a current collector, and curing the mixture disposed on the current collector
Data Source
AI summary
A meta-solid-state battery includes a first layer disposed on a first current collector, a second layer disposed on a second current collector, and third layer disposed between the first layer and the second layer. The first layer and the second layer are the cathode and anode electrodes. The third layer includes a first meta-solid-state electrolyte material. Each of the cathode and anode electrodes contain: an active material in an amount ranging from approximately 70% to 99.98% by weight, a carbon additive in an amount ranging from approximately 0.010% to 20% by weight, and a second meta-solid-state electrolyte material in an amount ranging from approximately 0.010% to 10% by weight. The first and second meta-solid-state electrolyte material include a gel polymer.