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An MoSe 2 /MoS 2 heterostructure composed of ultrasmall MoSe 2 nanosheets embedded in MoS 2 nanosheets was designed. Benefitting from the rich well-matched heterointerfaces between MoS 2 and MoSe 2 , it showed an excellent sodium storage performance.
Wang et al. (Wed,) studied this question.