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Company Chapter – BYD – China
Version: 2025-11-18, for paid subscribers
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This chapter covers BYD's solid-state / semi-solid Li-ion battery product development efforts
and corresponding patent portfolio:
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Semi-quantitative patent classification revealing focus on sulfide and polymer electrolytes,
with 10 identified R&D concepts.
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Analysis of potential synergies between R&D concepts including multi-element doped sulfides,
core-shell pseudohalogen surface modification, and bilayer phosphide-sulfide interfaces.
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Performance data including ionic conductivity metrics and mechanical
property measurements from patent disclosures.
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Projections of potential sulfide and polymer cell configurations with plausible
manufacturing process sequences.
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Document size: ≈5,200 words, 7 figures, 1 adjacent Excel file (list of patent families with AI-based summaries)
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