The December 2022 cover paper.

In-situ formation and integration of graphene into MoS2 interlayer spacing: expansion of interlayer spacing for superior hydrogen evolution reaction in acidic and alkaline electrolyte. The paper was handled by our Editor Mark Bissett and is entitled "In-situ formation and integration of graphene into MoS SB 2 sb interlayer spacing: expansion of interlayer spacing for superior hydrogen evolution reaction in acidic and alkaline electrolyte"; it is part of our "Energy materials" Topical Collection. The cover for the December 2022 issues of the Journal of Materials Science comes from the paper by Bui et al., which appeared in issue #40 from October 2022 [[1]]. [Extracted from the article]