Herein, we could introduce carbon disulfide (CS2) at the edges of graphene nanoplatelets (GnPs) with rich -C=S/-C-S bonds via ball-milling graphite in the presence of CS2. The resultant edge-thionic acid-functionalized GnPs (TAGnPs) exhibited a larger accessible surface area and smaller particle size than pristine graphite. Importantly, the TAGnPs retained a long-range-ordered graphitic layered structure similar to pristine graphite. When the TAGnPs are used as anode materials for LIBs, they displayed superior rate capability and cycling performance compared to pristine graphite and the reference edge-hydrogenated GnPs (HGnPs), which mainly have -C-H bonds at their edges.

Edge-thionic acid-functionalized graphene nanoplatelets with well-preserved graphite-like" structure for lithium ion batteries as anode materials

Macromolecular Chemistry: The Second Century

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ACS Spring 2020 National Meeting & Expo

The official archive and repository for all ACS Meetings & Expositions abstracts and select posters or presentations.