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Recessed deposition of TiN into N-doped carbon as a cathode host for superior Li-S batteries performance
dc.contributor.author | Xing, Zhenyu | |
dc.contributor.author | Li, Gaoran | |
dc.contributor.author | Sy, Serubbabel | |
dc.contributor.author | Chen, Zhongwei | |
dc.date.accessioned | 2018-11-15 14:56:57 (GMT) | |
dc.date.available | 2018-11-15 14:56:57 (GMT) | |
dc.date.issued | 2018-12-01 | |
dc.identifier.uri | https://dx.doi.org/10.1016/j.nanoen.2018.09.034 | |
dc.identifier.uri | http://hdl.handle.net/10012/14150 | |
dc.description | The final publication is available at Elsevier via https://dx.doi.org/10.1016/j.nanoen.2018.09.034 © 2018. This manuscript version is made available under the CC-BY-NC-ND 4.0 license https://creativecommons.org/licenses/by-nc-nd/4.0/ | en |
dc.description.abstract | In this work, we put forward a novel cathode host for Li-S batteries by loading titanium nitride (TiN) nanoparticles into the pores of N-doped carbon as a proof-of-concept. The selection of TiN arises from its strong binding ability with polysulfide and its exceptionally high conductivity of 5 × 106 S/m. As for N-doped porous carbon, it provides necessary physical adsorption and extra chemical adsorption sites from the N-doping. Besides the above advantages, the most substantial merit endowed to this structure is the pore-loaded TiN design. The carbon pore size confines the TiN precursors to the nanoscale and prevents otherwise subsequent agglomeration of TiN nanoparticles. Moreover, the pore-loaded TiN design, with fully exposed adsorptive surface and highly dispersed adsorptive sites, guards against the blocking of future sulfur infiltration and Li+ diffusion. The advantages of the TiN loaded N-doped carbon are finally confirmed by electrochemical evaluations. The capacity is found up to be 1338 mAh/g at a current density of 0.2 C and 690 mAh/g at a current density of 5 C (where 1 C = 1672 mAh/g). For durability evaluations, the capacity is maintained at 700 mAh/g after 800 cycles with a mere decay of 0.04% per cycle. Lastly, the feasibility of a high mass loading with 7 mg/cm2 is demonstrated. | en |
dc.description.sponsorship | Natural Sciences and Engineering Research Council of Canada | en |
dc.description.sponsorship | Waterloo Institute for Nanotechnology | en |
dc.description.sponsorship | Canadian Center for Electron Microscopy | en |
dc.language.iso | en | en |
dc.publisher | Elsevier | en |
dc.rights | Attribution-NonCommercial-NoDerivatives 4.0 International | * |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/4.0/ | * |
dc.subject | High mass loading | en |
dc.subject | Lithium sulfur batteries | en |
dc.subject | N-doped porous carbon | en |
dc.subject | Polysulfide adsorption | en |
dc.subject | Recessed deposition of TiN | en |
dc.title | Recessed deposition of TiN into N-doped carbon as a cathode host for superior Li-S batteries performance | en |
dc.type | Article | en |
dcterms.bibliographicCitation | Xing, Z., Li, G., Sy, S., & Chen, Z. (2018). Recessed deposition of TiN into N-doped carbon as a cathode host for superior Li-S batteries performance. Nano Energy, 54, 1–9. doi:10.1016/j.nanoen.2018.09.034 | en |
uws.contributor.affiliation1 | Faculty of Engineering | en |
uws.contributor.affiliation2 | Chemical Engineering | en |
uws.typeOfResource | Text | en |
uws.typeOfResource | Text | en |
uws.peerReviewStatus | Reviewed | en |
uws.scholarLevel | Faculty | en |