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dc.contributor.authorWang, Jinen_US
dc.contributor.authorXiao, Kuikuien_US
dc.contributor.authorOuyang, Boen_US
dc.contributor.authorZhang, Lilien_US
dc.contributor.authorYang, Haoen_US
dc.contributor.authorLiu, Jileien_US
dc.contributor.authorLiang, Peien_US
dc.contributor.authorRawat, Rajdeep Singhen_US
dc.contributor.authorShen, Zexiangen_US
dc.identifier.citationWang, J., Xiao, K., Ouyang, B., Zhang, L., Yang, H., Liu, J., . . . Shen, Z. (2019). Simultaneous Immobilization and Conversion of Polysulfides on Co3O4–CoN Heterostructured Mediators toward High-Performance Lithium–Sulfur Batteries. ACS Applied Energy Materials, 2(4), 2570–2578. doi:10.1021/acsaem.8b02196en_US
dc.description.abstractLithium–sulfur (Li–S) batteries exhibit great potential as a next-generation rechargeable battery system due to their high energy density, natural abundance, and nontoxicity. Nevertheless, the insulated nature of S and Li2S and the electrochemical instability of intermediate lithium polysulfides (LiPS) obstruct the commercialization of Li–S technologies. Herein, a heterophase Co3O4–CoN sulfur host combined with the merits of efficient polysulfide anchoring (Co3O4) and high conductivity (CoN) is reported to boost Li–S battery performance. Such porous Co3O4–CoN heterostructures endow the intermediate LiPS with the instantaneous immobilization–diffusion–conversion process, thus accelerating redox kinetics and alleviating the polysulfide shuttling. The assembled cathode based on the Co3O4–CoN/CC electrode exhibits a high initial capacity of 1225 mAh g–1 at 0.5 C with excellent rate performance (887 mAh g–1 at 3 C), and the specific capacity can be well maintained to 627 mAh g–1 even after 500 cycles at 3 C. Our work provides an efficient strategy for the rational design of comprehensive host materials enabling simultaneous LiPS immobilization and conversion and will give further impetus to the practical use of Li–S batteries.en_US
dc.relation.ispartofACS Applied Energy Materialsen_US
dc.rightsThis document is the Accepted Manuscript version of a Published Work that appeared in final form in ACS Applied Energy Materials, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see
dc.titleSimultaneous immobilization and conversion of polysulfides on Co3O4–CoN heterostructured mediators toward high-performance lithium–sulfur batteriesen_US
dc.typeJournal Articleen
dc.contributor.schoolSchool of Physical and Mathematical Sciencesen_US
dc.description.versionAccepted versionen_US
dc.subject.keywordsLithium−sulfur Batteriesen_US
dc.subject.keywordsCobalt Nitrideen_US
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