Self-Heating Solid-State Battery for Low-Resistance Ion Transport
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Solution Overview
Problem
Solid-state batteries face challenges with low power capabilities due to interfacial resistance between solid-state active particles and electrolytes, limiting their performance and energy density.
Innovation Solution
Incorporation of electrothermal material foils and metal foam structures in solid-state batteries, which allow for controlled heating modes to enhance ion transport and power capabilities by adjusting electron flow through resistor materials.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If solid-state electrolyte and solid-state electrodes are used, then safety and thermal stability are improved, but power capability deteriorates due to interfacial resistance
Solution Approach 1:
The patent employs porous metal foam structures as current collectors and electrodes, creating a three-dimensional porous network that significantly increases the contact area between solid-state electrolyte and electroactive material. This porous architecture reduces interfacial resistance by providing numerous contact points while maintaining the solid-state configuration, thereby improving power capability without compromising safety
Solution Approach 2:
The patent creates composite structures by embedding solid-state electroactive material particles within the porous metal foam matrix. This composite approach combines the safety advantages of solid-state materials with the high surface area and conductive properties of metal foam, achieving both improved safety and enhanced power capability through synergistic material integration
2Stability of the object's composition
If solid-state electrolyte is used, then thermal stability is improved, but ion transport capability deteriorates
Solution Approach 1:
The porous metal foam structure provides a three-dimensional network with high porosity that facilitates efficient ion transport pathways. The interconnected pores allow lithium ions to move rapidly through the solid-state electrolyte while maintaining thermal stability, as the porous structure enables heat dissipation without compromising the solid-state configuration
Solution Approach 2:
The patent transitions from traditional two-dimensional planar electrodes to three-dimensional porous metal foam structures. This dimensional change creates extensive ion transport pathways throughout the volume of the electrode, significantly enhancing ion transport capability while the solid-state electrolyte maintains thermal stability
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
Improves power capabilities and energy density of solid-state batteries by reducing interfacial resistance and enhancing ion transport through controlled heating, thereby addressing the limitations of traditional solid-state designs.
Implementation Method 1
one or more electrothermal material foils including a resistor material that is in electrical communication with at least one of the one or more current collectors, where in the first operational state electrons may flow through the one or more electrothermal material foils during cycling of the solid-state battery so as to initiate a heating mode
Data Source
AI summary
The present disclosure provides a solid-state battery including at least one current collector that is in communication with one or more switches configured to move between open and closed positions, where the open position corresponds to a first operational state of the solid-state battery and the closed position corresponds to a second operational state of the solid-state battery; one or more electrodes disposed adjacent to the one or more current collectors; and one or more electrothermal material foils including a resistor material that is in electrical communication with that at least one current collector, where in the first operational state electrons may flow through the one or more electrothermal material foils during cycling of the solid-state battery so as to initiate a heating mode, and in the second operational state electrons may flow through the current collector during cycling of the solid-state battery so as to initiate a non-heating mode.