SIC OpenIR
Constructing porous TiO(2)crystals by an etching process for long-life lithium ion batteries
Nong, SY; Dong, CL; Wang, YX; Huang, FQ
2020-09-21
Source PublicationNANOSCALE
ISSN2040-3364
Issue35Pages:18429
SubtypeArticle
AbstractZero strain materials, which have no volume change when charging and discharging, show ultra-long cycling stabilities when used as lithium-ion battery anodes, making them an area of extreme interest in this decade. For a typical anatase TiO(2)crystal, the volume change is 3-4% during Li insertion/extraction, which is not "zero strain". As the Ti/O packing in the TiO(2)lattice is too tight, there is insufficient void space for Li insertion, leading to volume expansion and structural collapse. Herein, pseudo-"zero-strain" TiO(2)is achievedviadesigning TiO(2)crystals with abundant inner mesopores, making Ti/O loose-packedviathe acid-etching of K2Ti8O17, providing sufficient space for Li intercalation. Instead of the traditional cut-off potential of 1 V used for Ti-/Nb-based anodes, we choose 0.01 V as the cut-off to make the best of the extra capacity contributed by the mesopores. As expected, plenty of mesopores could serve as "Li+-reservoirs" for fast lithium storage, demonstrating exceptional high-rate performance with an average capacity of 109.6 mA h g(-1)after 30 000 cycles at 60 C and 100 mA h g(-1)at 120 C. Such a strategy of combining a mesoporous structure and cut-off potential regulation may pave a solid pathway for constructing novel high-power anodes.
DOI10.1039/d0nr04861e
WOS KeywordANODE MATERIALS ; HOLLOW SPHERES ; ANATASE TIO2 ; RUTILE TIO2 ; PERFORMANCE ; COMPOSITE ; STORAGE ; NANOMATERIALS ; STRATEGY ; IMPACT
Language英语
WOS Research AreaChemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
PublisherROYAL SOC CHEMISTRY
Citation statistics
Document Type期刊论文
Identifierhttp://ir.sic.ac.cn/handle/331005/27741
Collection中国科学院上海硅酸盐研究所
Recommended Citation
GB/T 7714
Nong, SY,Dong, CL,Wang, YX,et al. Constructing porous TiO(2)crystals by an etching process for long-life lithium ion batteries[J]. NANOSCALE,2020(35):18429.
APA Nong, SY,Dong, CL,Wang, YX,&Huang, FQ.(2020).Constructing porous TiO(2)crystals by an etching process for long-life lithium ion batteries.NANOSCALE(35),18429.
MLA Nong, SY,et al."Constructing porous TiO(2)crystals by an etching process for long-life lithium ion batteries".NANOSCALE .35(2020):18429.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Nong, SY]'s Articles
[Dong, CL]'s Articles
[Wang, YX]'s Articles
Baidu academic
Similar articles in Baidu academic
[Nong, SY]'s Articles
[Dong, CL]'s Articles
[Wang, YX]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Nong, SY]'s Articles
[Dong, CL]'s Articles
[Wang, YX]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.