All Solid State Oxide Ion Battery Thermal Management
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Solution Overview
Problem
Current rechargeable oxide-ion batteries face challenges with high energy storage costs, inefficiencies due to air usage at the oxygen electrode, and reliability issues stemming from volume changes in metal electrodes, which affect performance and longevity.
Innovation Solution
An all-solid-state rechargeable oxide-ion battery design replaces the perovskite oxygen electrode with metal-metal oxide pairs and integrates a thermal energy storage unit to regulate temperature, eliminating air contact and enhancing energy efficiency and cost-effectiveness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If metal electrodes are used in ROB for high energy storage capacity, then energy storage capacity is improved, but volume change during redox reactions causes electrode spallation and cell failure
Solution Approach 1:
The patent employs porous electrode structures where the porous skeleton provides void space to accommodate volume expansion and contraction during metal redox reactions. This prevents spallation and maintains electrode integrity while preserving high energy storage capacity through the active metal components distributed within the porous structure.
Solution Approach 2:
The electrode is designed as a composite material system combining a structurally stable skeleton material with active metal components. The skeleton provides mechanical strength and structural integrity, while the active metal components provide high energy storage capacity, creating a synergistic composite that resolves the contradiction between capacity and reliability.
2Ease of manufacture
If air is used at the oxygen electrode for oxidation reactions, then oxidation process is simplified, but system complexity increases due to air handling requirements and safety concerns
Solution Approach 1:
The patent extracts and eliminates the air handling system from the ROB design by using a solid oxide-ion conducting electrolyte that enables direct oxide ion transport between electrodes. This removes the need for air supply, flow control, and safety systems while maintaining the oxidation reaction functionality through solid-state ion conduction.
Solution Approach 2:
The patent replaces the mechanical air handling system with a solid-state oxide ion conduction mechanism. Instead of using gaseous air flow for oxidation, the system uses solid oxide ions transported through the electrolyte, substituting a complex mechanical gas handling system with a simpler solid-state ionic conduction process.
3Use of energy by moving object
If liquid electrolyte systems are used in batteries for ion transport, then ion conduction is efficient, but system safety and lifetime are compromised
Solution Approach 1:
The patent changes the physical state parameter of the electrolyte from liquid to solid, using oxide-ion conducting solid electrolytes. This parameter change maintains efficient ion conduction through the solid electrolyte while simultaneously improving safety and lifetime by eliminating the safety issues associated with liquid electrolytes such as leakage, flammability, and degradation.
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 enables high-capacity, quick charging and discharging with reduced maintenance needs, improved reliability, and lower costs by using metal-metal oxide pairs and a phase-change thermal energy storage unit, resulting in a compact, modular, and scalable energy storage system.
Implementation Method 1
the TES unit stores heat given off from the exothermic discharging reaction by transforming from solid to liquid phase and the opposite
Implementation Method 2
a new thermal energy storage (TES) unit is integrated into the battery stack so that the battery system can operate isothermally
Implementation Method 3
an oxide-ion conductive electrolyte
Implementation Method 4
The metal electrode undergoes reduction-oxidation cycles during charge and discharge processes for energy storage
Data Source
AI summary
An all solid state rechargeable oxide-ion (ROB) battery (30) has a thermal energy storage (TES) unit (20) between two oxide-ion cells (22, 24) with metal-metal oxide electrodes (34, 36, 40, 42) on opposite sides of an anion conducting solid electrolyte (32,38) where none of the electrodes is contact with air.