Electroactive Agglomerated Particles for Battery Conductivity
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Solution Overview
Problem
Current agglomerated nanoparticles in batteries typically consist of a single electroactive material, which limits their performance and efficiency, as they lack the enhanced electrical or ionic conductivity and specific capacity that can be achieved by combining different electroactive materials.
Innovation Solution
The development of electroactive agglomerated particles comprising nanoparticles of a first and second electroactive material, which can be mixed, coated, or have one embedded within the other, along with binders and additives like carbon or metal oxides, to create composite particles that enhance conductivity and capacity without reducing specific properties, and can be processed using conventional techniques.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If agglomerated particles consist of a single electroactive material, then the structure is simple and easy to manufacture, but the electrical and ionic conductivity and specific capacity are limited
Solution Approach 1:
The patent applies composite materials by combining multiple electroactive materials (e.g., LiFePO4 and LiCoO2) within a single agglomerated particle structure. This allows the particle to exhibit enhanced electrical and ionic conductivity properties that neither material could achieve alone, while maintaining structural integrity and manufacturability through conventional processing techniques.
Solution Approach 2:
The patent merges multiple electroactive materials at the nanoparticle level within agglomerated structures. By combining fine nanoparticles of different materials into unified agglomerates, the invention achieves synergistic effects that improve overall battery performance while maintaining ease of manufacture through standard mixing and processing methods.
2Reliability
If multiple electroactive materials are combined in agglomerated particles, then electrical and ionic conductivity and specific capacity are enhanced, but the particle structure becomes more complex
Solution Approach 1:
The patent segments the agglomerated particles into distinct nanoparticle components (e.g., LiFePO4 nanoparticles and LiCoO2 nanoparticles) that maintain their individual identities while being assembled into a unified structure. This segmentation allows each material to contribute its specific properties without requiring complex molecular-level integration, thus enhancing capacity while managing structural complexity.
Solution Approach 2:
The patent employs a nested structure where nanoparticles of one electroactive material are embedded within or alongside nanoparticles of another material within the same agglomerate. This nesting approach allows multiple materials to coexist in a compact, organized manner that enhances specific capacity without creating excessive structural complexity or requiring sophisticated manufacturing processes.
3Reliability
If multiple electroactive materials are combined in agglomerated particles, then conductivity is improved, but the processing difficulty increases
Solution Approach 1:
The patent utilizes parameter changes by controlling particle size distribution, agglomerate morphology, and material ratios to optimize both conductivity and processability. By adjusting these parameters, the invention achieves enhanced electrical and ionic conductivity while maintaining compatibility with conventional battery manufacturing processes such as mixing, coating, and sintering.
Data Source
AI summary
Provided herein are electroactive agglomerated particles, which comprise nanoparticles of a first electroactive material and nanoparticles of a second electroactive materials, and processes of preparation thereof.