Abstract

A phase extraction technique is used to prepare a core–sheath structured composite consisting of carbon nanotubes (CNTs) coated with a layer of phenyl disulfide (PDS, C6H5SSC6H5). The PDS@CNT paper cathode delivers a discharge capacity of 218 mA h g−1 at 1C while retaining 70% of the capacity after 150 cycles. High rate performance (180 mA h g−1 at 3C) and scalable synthesis prove its capability for energy storage applications.

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