Coating polyolefin separators with mussel-in spired pcH yd op a mine for high performance Tithium-ion battery

Abstract

Mussel-in spired po ydopamine coating onto rthium battery separators in-creases the wettability with e ectno yte and thus, improves eel performance in many aspects: increasing rate performanee, minimizing uncharged spots (especially for large cells),, and improving resistance against therma shrinkage. Moreover, this musse I-inspired materia shows Exceptional adhesion such that once it is coated, it does not pee off un ike conventional coating materials.

Potential applications

Secondary battery, especially for large-sca e eel s targeting electrical vehicles and utility power grids

Customer benefits:

l   Improvement of Li rechargeab e cell performance

l   Supporting high power

l   Increasing resistance against thermal shrinkage of separators

l   Uniform ionic flux (minimal uncharged local spots]

l   Good adhesion (stacking) between active materials and separators

Technology Features & Specifications

This technology-consists of a dipping step for coating lithium battery .separators with poly dopamine.

Market Trends and Opportunities

l   Exposively increasing battery market

l   Increasing demand for large-scale battery ce Is (electrical vehicles etc]

l   The role of separators have become more critical in overall cell performance