Solid polymer electrolytes

LG Corp, Contemporary Amperex Technology Co. Ltd, TS Corporation, Panasonic and Toyota Motor Corporation are among the corporate patent holders associated with this field. LG Corp has the largest listed patent count, followed by Contemporary Amperex Technology Co. Ltd. These patent records indicate activity, but do not by themselves confirm current product availability or commercial supply.

Factorial Inc., Piersica and Blue Current are named startups with solid polymer electrolyte-related activity, but the available data does not establish a performance ranking. Factorial’s patent describes an in-situ-polymerized semi-solid electrolyte. Piersica has a reported prototype using a solid polymer electrolyte, while Blue Current is associated with research on cross-linked PEO for lithium-metal stability.

The Chinese Academy of Sciences and Tsinghua University are prominent research organizations in the recent activity data, with 157 and 99 documents in the 24-month window, respectively. The University of Chinese Academy of Sciences is also active, with 94 documents. Their reported work includes nanofiber-reinforced composites, PVDF-based electrolytes and strategies to regulate ion transport.

The available funding data records $68,750,026 across 61 grants since 2020 and $16,203,073,601 across 23 funding rounds. These figures aggregate funding associated with the topic and may include broader organizational activity; they are not a clean measure of investment dedicated solely to solid polymer electrolytes. The grant total and funding-round total are separate categories.

LG Corp leads the listed patent holders with 120 patents in the dataset. Contemporary Amperex Technology Co. Ltd follows with 61, and TS Corporation has 30. Panasonic and Toyota Motor Corporation are also among the leading listed holders. These counts describe the patent records associated with the topic, not necessarily active granted patents or product ownership.

No: patent activity in the 24-month window is down 38.1%, with 1,177 patents recorded for that window. Publication activity is comparatively steady, with 2,184 publications in the last year and growth of 0.9%. The divergence suggests that recent research output remains active even as the patent measure declines.

October 2026 publications describe kinked polyphenylenes with ethylene oxide side chains and an in-situ-polymerized poly(ionic liquid) electrolyte for lithium-metal batteries. Other recent work includes succinonitrile molecular tailoring for sodium-metal systems, recyclable electrolytes using dynamic lipoate cross-linking, and engineered MOF–polymer interfaces. The shared aim is to improve ion transport while stabilizing electrode contact.

Polyether hosts, single-ion conductors, block copolymers, crosslinked networks and composite electrolytes are the main listed approaches. Polyethers provide salt-solvating polymer matrices; single-ion designs seek greater ion selectivity; block copolymers separate conducting and supporting domains; crosslinking reinforces structure; and composites add fillers to modify transport or mechanics. Each approach balances ion mobility, mechanical integrity and interface stability differently.

Lithium-ion batteries are the largest listed application, with 2,768 documents, followed by lithium-metal batteries with 2,155. Other applications include sodium-ion batteries, flexible batteries and stationary storage. Recent activity is rising for lithium-metal batteries and stationary storage, while flexible-battery activity has declined in the comparison period. Polymer flexibility and solid-state operation make these materials relevant across these battery formats.

China leads the country data with 8,104 documents, followed by the United States with 5,276 and South Korea with 3,155. Japan and India are also among the leading contributors. These figures reflect topic-linked documents, including research and patent activity, rather than a direct measure of commercial production or market share.