Are Metal oxide-GO nanocomposites better then metal oxide-rGO nanocomposites for Lithium ion battery? How differently they affect the lithium ion battery performance?
From my understanding, using rGO should lead to much better performance. Carbon materials are wanted for their conductive properties - those should be better in graphene than in its oxide.
Just look at metals for comparison: They show high electronic conductivities due to the presence of an "electron gas". As soon as you oxidize a metal and change the dominant bond type from metallic to e.g. ionic, you see a decrease in conductivity.
up to my knowledge, carbonaceous nanomaterials generally used in the energy storage for enhancing the electronic conductivity of the insulating nature of active materials (transition metal oxides and other oxides). Specifically, Graphene and CNTs are used for that reason meanwhile the rGO is considered to posses proprieties as Graphene but GO has not. The presence of oxygen sites decrease its electronic conductivity.
You can read more in the following review
Article The role of graphene for electrochemical energy storage
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