Solid-State Lithium Battery Structure Mitigating Air Reactivity
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Solution Overview
Problem
State-of-the-art commercial rechargeable batteries using lithium metal and organic electrolytes are prone to violent reactions with air and water, requiring expensive nitrogen environments for handling, and existing fabrication methods are complex and environmentally unfriendly.
Innovation Solution
A solid-state lithium rechargeable battery structure comprising a conductive substrate, a cathode material layer, a solid electrolyte material layer, an anode material layer, and a conductive layer, fabricated using a solution-processed method involving coating and annealing, which mitigates reactions with air and water and is environmentally stable.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If lithium metal and organic electrolytes are used in state-of-the-art commercial rechargeable batteries, then the battery can achieve rechargeable functionality, but the battery becomes prone to violent reactions with air and water, requiring expensive nitrogen environments for handling
Solution Approach 1:
The patent replaces the harmful organic electrolyte environment with a solid electrolyte that creates an inherently inert and stable environment, eliminating the need for external nitrogen atmosphere protection during handling and operation
Solution Approach 2:
The patent changes the physical state of the electrolyte from liquid (organic) to solid, which fundamentally alters the chemical stability and reactivity parameters of the battery system, making it resistant to reactions with air and water
2Reliability
If lithium metal and organic electrolytes are used in state-of-the-art commercial rechargeable batteries, then the battery can achieve rechargeable functionality, but expensive nitrogen environments are required for handling
Solution Approach 1:
The solid electrolyte inherently provides chemical stability and inertness, eliminating the requirement for expensive nitrogen environment infrastructure during manufacturing and handling processes
Solution Approach 2:
Changing the electrolyte from liquid to solid state fundamentally improves chemical stability, which directly reduces manufacturing costs by eliminating the need for controlled atmosphere facilities
3Manufacturing precision
If conventional fabrication methods are used for lithium metal batteries, then the battery structure can be formed, but the fabrication process becomes complex and environmentally unfriendly
Solution Approach 1:
The solid-state nature of the electrolyte enables new fabrication approaches that differ from conventional liquid electrolyte methods, potentially simplifying the manufacturing process while maintaining structural precision
Solution Approach 2:
The patent removes the need for complex nitrogen environment infrastructure and specialized handling equipment from the fabrication process, simplifying the overall manufacturing system
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 solution provides an environmentally stable, cost-effective, and safe lithium rechargeable battery with improved cyclic performance and specific energy capacity, reducing the risk of combustive reactions and simplifying the fabrication process.
Implementation Method 1
Lithium metal and organic electrolytes used in the state-of-the-art commercial rechargeable batteries are prone to violent reactions with air and water. A solid-state lithium rechargeable battery structure comprising a conductive substrate, a cathode material layer, a solid electrolyte material layer, an anode material layer, and a conductive layer, fabricated using a solution-processed method involving coating and annealing, which mitigates reactions with air and water and is environmentally stable.
Implementation Method 2
The conductive substrate, the cathode material layer, the solid electrolyte material layer, and the anode material layer are further annealed to provide a four-layer structure.
Data Source
AI summary
A lithium rechargeable lithium battery including a conductive substrate, a cathode material layer disposed over the conductive substrate, a solid electrolyte material layer disposed over the cathode material layer, an anode material layer disposed over the solid electrolyte material layer, and a conductive layer disposed over the anode material layer.