The Impacts of Graphene Nanosheets and Manganese Valency on Lithium Storage Characteristics in Graphene/Manganese Oxide Hybrid Anode

Table 2

Summary of GNS and three GNS-MnOx specimens including their prepared conditions, manganese component phases, GNS contents, and electrochemical performances.

Sample	GNS	GNS/MnOx-1	GNS/MnOx-2	GNS/MnOx-3
Synthesis info	As-prepared	As-prepared	400°C 12 h; in air	400°C 12 h; in 5% H2/Ar
GNS content	100%	44%	20%	42%
MnOx phase	N/A	Mn3O4	Mn3O4	Mn3O4 + MnO (40 : 60)
1st capacity	1248/843	1430/850	1433/578	1279/838
1st efficiency	68%	59%	40%	65%
2nd capacity	810	806	494	772
10th capacity	790	619	233	719
Capacity fading	0.3%	2.6%	5.9%	0.8%