High-efficiency, self-grinding exfoliation of small graphene nanosheets from microcrystalline graphite driven by microbead milling as conductive additives

Direct mass exfoliation of graphene from bulk graphite with high yield and productivity for commercial applications is challenging. This work proposes self-grinding using the mutual shear friction particles to fabricate microcrystalline graphite. The concept implemented microbeads as grinding medium drive between nanocrystals in a high-concentration paste. proposed approach substantially improves 6.3% 100% simultaneously generates record 7.5 g h−1 L−1, achieving total graphite-to-graphene conversion on kilogram scale. as-prepared nanosheets have an average lateral size 298 nm same C/O atomic ratio pristine In addition, well-exfoliated, small display good electrical conductivity exhibit significant potential conductive additives that improve specific capacity cyclic stability Li-ion batteries better than carbon-based particles.