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Top: Coating of Na2.9PS3.95Se0.05 (NPS-Se) on Fe1-xS nanorods to obtain the cathode for sodium-ion batteries. Bottom: Electrochemical properties of the Fe1-xS@Na2.9PS3.95Se0.05/Na2.9PS3.95Se0.05/Na cell. Reproduced with permission from [556]. Copyright 2018 The American Chemical Society.
