Li-ion Battery Technology

• Deep Dive – Interfaces: Si-based Electrodes – Sulfide Electrolytes

  Version: 2024-11-06, for paid subscribers
• This chapter includes a comprehensive analysis of Si-based electrodes with sulfide electrolytes for all-solid-state batteries, including:
  • Detailed patent analysis across leading companies (such as Toyota, Panasonic, Solid Power, LG Energy Solution, SVOLT) with insights into their current product development approaches and commercial strategies
  • Assessment of interface challenges between Si-based electrodes and sulfide electrolytes, including formation of LiCl, Li₃P, Li₂S, and impact on cell performance
  • Analysis of carbon additive trade-offs, electrode porosity optimization, and approaches to manage Si volume expansion
  • Subject matter expert commentary on 'underexplored' material combinations with conductivity data from recent patent filings
  
  Table of contents
  • Introduction
  • 'Decision Maze' Towards Product Launch
  • Academic Findings on Si-sulfide Interface Reactions
  • Parasitic Reactions of Carbon Additives in Si-based Negative Electrodes
  • Electronic Conductivity of Si and Si-Li Alloys in Carbon-free Negative Electrodes
  • Role of Porosity and Tortuosity in Si-based Negative Electrodes
  • Active Material Optimization for Dry Processing
  • Reconsidering the ‘Decision Maze’ – Under-explored Approaches
  • Role of Si Coatings
  • Role of Si Doping
  • Impact of Doped Sulfide Electrolytes on Interface
  • Control of Metallurgical Si Nano- & Microcrystallinity
  • Conclusion
  • Summaries of Patent Families Discussed in ‘Decision Maze’
• Document size: 4,834 words, 6 figures

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