Journal Pre-proof Nitrogen-doped carbon spheres decorated with CoS x nanoparticles as multifunctional electrocatalysts for rechargeable Zn-air battery and overall water splitting Qiangjian Ju, Ruguang Ma, Yu Pei, Beibei Guo, Qian Liu, Tao Zhang, Minghui Yang, Jiacheng Wang PII: S0025-5408(19)32775-8 DOI: https://doi.org/10.1016/j.materresbull.2020.110770 Reference: MRB 110770 To appear in: Materials Research Bulletin Received Date: 26 October 2019 Revised Date: 13 December 2019 Accepted Date: 5 January 2020 Please cite this article as: Ju Q, Ma R, Pei Y, Guo B, Liu Q, Zhang T, Yang M, Wang J, Nitrogen-doped carbon spheres decorated with CoS x nanoparticles as multifunctional electrocatalysts for rechargeable Zn-air battery and overall water splitting, Materials Research Bulletin (2020), doi: https://doi.org/10.1016/j.materresbull.2020.110770 This is a PDF file of an article that has undergone enhancements after acceptance, such as the addition of a cover page and metadata, and formatting for readability, but it is not yet the definitive version of record. This version will undergo additional copyediting, typesetting and review before it is published in its final form, but we are providing this version to give early visibility of the article. Please note that, during the production process, errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. © 2019 Published by Elsevier.