Multi-Chamber Na-NiCl2 Cell Structure for Higher Power Density
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current Sodium Nickel Chloride (Na—NiCl2) high temperature batteries have lower power densities and limitations on size reduction due to their design and size constraints.
Innovation Solution
A modified multi-chamber design for high temperature batteries, featuring at least two distinct cathode chambers and a separator with a hollow structure and multiple walls, which enables ion transfer and increases the available surface area for sodium ion exchange.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If conventional Na-NiCl2 battery design is used, then battery structure is simple, but power density is low and size reduction is limited
Solution Approach 1:
The battery is divided into multiple cathode chambers (first cathode chamber, second cathode chamber) separated by a separator with hollow structure. This segmentation increases the total cathode surface area available for electrochemical reactions, thereby increasing power density while maintaining a manageable structural complexity through modular design
Solution Approach 2:
The hollow structure of the separator is utilized to define an anode chamber within the separator itself, creating a nested configuration where the anode chamber is embedded within the separator structure. This nesting approach maximizes space utilization and increases power density without proportionally increasing overall battery size or complexity
2Volume of moving object
If battery size is reduced, then portability improves, but power density decreases due to design limitations
Solution Approach 1:
The separator is designed with a hollow three-dimensional structure that defines an anode chamber, transitioning from a simple planar separator to a volumetric structure. This dimensional change allows the anode to be positioned within the separator's hollow space, increasing the effective surface area for ion exchange per unit volume and enabling higher power density in a compact size
Solution Approach 2:
The separator employs a hollow structure that provides increased surface area for ion transfer between cathode and anode chambers. This porous-like structure allows efficient ion transport while maintaining compact dimensions, enabling high power density in a reduced battery size
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 multi-chamber design enhances power density and allows for size reduction by increasing the surface area for sodium ion exchange, reducing ohmic resistance, and improving the separator's surface area to cathode volume ratio.
Implementation Method 1
a separator having a hollow structure enclosed between a first wall and a second wall, wherein the separator is configured to enable ion transfer between the first wall and the second wall
Implementation Method 2
The at least one separator electrically insulates the at least one cathode chamber from the at least one anode chamber
Data Source
AI summary
The present disclosure discloses a high temperature cell system. The cell system may comprise at least two distinct cathode chambers. The cell system may further comprise a separator having a hollow structure enclosed between a first wall and a second wall, wherein the separator is configured to enable ion transfer between the first wall and the second wall. Further the hollow structure of the separator may define at least one anode chamber. The cell system may comprise a base configured to provide a common sealing to the at least two cathode chambers and the separator at one first end and second end respectively.