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Title: Improved Li storage performance in SnO2 nanocrystals by a synergetic doping

Journal Article · · Scientific Reports
DOI:https://doi.org/10.1038/srep18978· OSTI ID:1259715
 [1];  [2];  [3];  [1];  [4];  [3];  [5]
  1. Henan Univ., Kaifeng (People's Republic of China)
  2. McGill Univ., Montreal, QC (Canada)
  3. Chinese Academy of Sciences, Beijing (People's Republic of China)
  4. Henan Univ., Kaifeng (People's Republic of China); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  5. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
+ Show Author Affiliations

Tin dioxide (SnO2) is a widely investigated lithium (Li) storage material because of its easy preparation, two-step storage mechanism and high specific capacity for lithium-ion batteries (LIBs). In this contribution, a phase-pure cobalt-doped SnO2 (Co/SnO2) and a cobalt and nitrogen co-doped SnO2 (Co-N/SnO2) nanocrystals are prepared to explore their Li storage behaviors. It is found that the morphology, specific surface area, and electrochemical properties could be largely modulated in the doped and co-doped SnO2 nanocrystals. Gavalnostatic cycling results indicate that the Co-N/SnO2 electrode delivers a specific capacity as high as 716 mAh g–1 after 50 cycles, and the same outstanding rate performance can be observed in subsequent cycles due to the ionic/electronic conductivity enhancement by co-doping effect. Further, microstructure observation indicates the existence of intermediate phase of Li3N with high ionic conductivity upon cycling, which probably accounts for the improvements of Co-N/SnO2 electrodes. In conclusion, the method of synergetic doping into SnO2 with Co and N, with which the electrochemical performances is enhanced remarkably, undoubtedly, will have an important influence on the material itself and community of LIBs as well.

Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
50902044; 2015AA034201; 124200510004; AC05-00OR22725
OSTI ID:
1259715
Alternate ID(s):
OSTI ID: 1311299
Journal Information:
Scientific Reports, Vol. 6; ISSN 2045-2322
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 74 works
Citation information provided by
Web of Science

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Cited By (7)

Tin Oxide Based Nanomaterials and Their Application as Anodes in Lithium‐Ion Batteries and Beyond journal August 2019
Additional Lithium Storage on Dynamic Electrode Surface by Charge Redistribution in Inactive Ru Metal journal December 2019
Formation mechanisms of Fe3−xSnxO4 by a chemical vapor transport (CVT) process journal March 2017
Modulation of lanthanide luminescence via an electric field journal January 2019
Enhanced lithium storage performances of SnO 2 nanospheres induced by Sb dopants journal January 2019
Sol-gel assisted nano-structured SnO2 sensor for low concentration ammonia detection at room temperature journal January 2019
Tin Oxide Based Nanomaterials and Their Application as Anodes in Lithium‐Ion Batteries and Beyond journal August 2019

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