Cell Design and Materials: Solid-State

Semi-solid State Industry Players and Investment Case Study) Semi-solid-state batteries are being used selectively to bridge the gap between conventional Li-ion systems and future all-solid-state architectures. While they offer near-term improvements in energy density and safety, recent deployments underscore that manufacturing scale, cost structure, and long-term differentiation remain unresolved.

Company

Key Partners / Investors

Strategic Positioning

CATL R&D focus

Parallel development of all-solid-state batteries (long-term) and semi-solid-state systems (near-term), with semi-solid positioned as a bridging solution rather than a final platform.

WeLion Near-term manufacturing

Xiaomi, Huawei

Focused on early commercialization of semi-solid-state batteries, targeting incremental gains in energy density while leveraging modified Li-ion manufacturing infrastructure.

NIO Early deployment

WeLion

Deployed a 150 kWh semi-solid-state battery pack in limited production vehicles beginning in 2024. Program activity was paused in late 2025, highlighting challenges in scalability, cost, and sustained manufacturing readiness.

Source: Summarized from industrial public materials (press releases, official website informations, etc.)

Extracted from the PDF; charts and images may read imperfectly.