Hierarchical TiO2 spheres as highly efficient polysulfide host for lithium-sulfur batteries

Hierarchical TiO2 micron spheres assembled by nano-plates were prepared through a facile hydrothermal route. Chemical tuning of the TiO2 through hydrogen reduction (H-TiO2) is shown to increase oxygen-vacancy density and thereby modifies the electronic properties. H-TiO2 spheres with a polar surface...

Full description

Bibliographic Details
Main Authors:	Yang, Zhi-Zheng, Wang, Hui-Yuan, Lu, Lun, Wang, Cheng, Zhong, Xiao-Bin, Wang, Jin-Guo, Jiang, Qi-Chuan
Format:	Online
Language:	English
Published:	Nature Publishing Group 2016
Online Access:	https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4786857/

id	pubmed-4786857
recordtype	oai_dc
spelling	pubmed-47868572016-03-14 Hierarchical TiO2 spheres as highly efficient polysulfide host for lithium-sulfur batteries Yang, Zhi-Zheng Wang, Hui-Yuan Lu, Lun Wang, Cheng Zhong, Xiao-Bin Wang, Jin-Guo Jiang, Qi-Chuan Article Hierarchical TiO2 micron spheres assembled by nano-plates were prepared through a facile hydrothermal route. Chemical tuning of the TiO2 through hydrogen reduction (H-TiO2) is shown to increase oxygen-vacancy density and thereby modifies the electronic properties. H-TiO2 spheres with a polar surface serve as the surface-bound intermediates for strong polysulfides binding. Under the restricting and recapturing effect, the sulfur cathode could deliver a high reversible capacity of 928.1 mA h g−1 after 50 charge-discharge cycles at a current density of 200 mA g−1. The H-TiO2 additive developed here is practical for restricting and recapturing the polysulfide from the electrolyte. Nature Publishing Group 2016-03-11 /pmc/articles/PMC4786857/ /pubmed/26965058 http://dx.doi.org/10.1038/srep22990 Text en Copyright © 2016, Macmillan Publishers Limited http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/
repository_type	Open Access Journal
institution_category	Foreign Institution
institution	US National Center for Biotechnology Information
building	NCBI PubMed
collection	Online Access
language	English
format	Online
author	Yang, Zhi-Zheng Wang, Hui-Yuan Lu, Lun Wang, Cheng Zhong, Xiao-Bin Wang, Jin-Guo Jiang, Qi-Chuan
spellingShingle	Yang, Zhi-Zheng Wang, Hui-Yuan Lu, Lun Wang, Cheng Zhong, Xiao-Bin Wang, Jin-Guo Jiang, Qi-Chuan Hierarchical TiO2 spheres as highly efficient polysulfide host for lithium-sulfur batteries
author_facet	Yang, Zhi-Zheng Wang, Hui-Yuan Lu, Lun Wang, Cheng Zhong, Xiao-Bin Wang, Jin-Guo Jiang, Qi-Chuan
author_sort	Yang, Zhi-Zheng
title	Hierarchical TiO2 spheres as highly efficient polysulfide host for lithium-sulfur batteries
title_short	Hierarchical TiO2 spheres as highly efficient polysulfide host for lithium-sulfur batteries
title_full	Hierarchical TiO2 spheres as highly efficient polysulfide host for lithium-sulfur batteries
title_fullStr	Hierarchical TiO2 spheres as highly efficient polysulfide host for lithium-sulfur batteries
title_full_unstemmed	Hierarchical TiO2 spheres as highly efficient polysulfide host for lithium-sulfur batteries
title_sort	hierarchical tio2 spheres as highly efficient polysulfide host for lithium-sulfur batteries
description	Hierarchical TiO2 micron spheres assembled by nano-plates were prepared through a facile hydrothermal route. Chemical tuning of the TiO2 through hydrogen reduction (H-TiO2) is shown to increase oxygen-vacancy density and thereby modifies the electronic properties. H-TiO2 spheres with a polar surface serve as the surface-bound intermediates for strong polysulfides binding. Under the restricting and recapturing effect, the sulfur cathode could deliver a high reversible capacity of 928.1 mA h g−1 after 50 charge-discharge cycles at a current density of 200 mA g−1. The H-TiO2 additive developed here is practical for restricting and recapturing the polysulfide from the electrolyte.
publisher	Nature Publishing Group
publishDate	2016
url	https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4786857/
_version_	1613550434973122560

Hierarchical TiO2 spheres as highly efficient polysulfide host for lithium-sulfur batteries

Similar Items