Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 7, Issue 33, Pages 18211-18217Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsami.5b06154
Keywords
sodium ion battery; vanadium oxide; layered structure; nanobelt; lattice breathing
Funding
- National Basic Research Program of China [2013CB934103, 2012CB933003]
- National Natural Science Foundation of China [51272197, 51302203]
- National Science Fund for Distinguished Young Scholars [51425204]
- Hubei Province Natural Science Fund for Distinguished Young Scholars
- International Science and Technology Cooperation Program of China [2013DFA50840]
- Fundamental Research Funds for Central Universities [2014-YB-001, 2014-YB-002, 2013-ZD-7]
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Operating as the rocking-chair battery, sodium ion battery (SIB) with acceptable high capacity is a very promising energy storage technology. Layered vanadium oxide xerogel exhibits high sodium storage capacity. But it undergoes large lattice breathing during sodiation/desodiation, resulting in fast capacity fading. Herein, we develop a facile hydrothermal method to synthesize iron preintercalated vanadium oxide ultrathin nanobelts (Fe-VOx) with constricted interlayer spacing. Using the Fe-VOx as cathode for SIB, the lattice breathing during sodiation/desodiation is largely inhibited and the interlayer spacing is stabilized for reversible and rapid Na+ insertion/extraction, displaying enhanced cycling and rate performance. This work presents a new strategy to reduce the lattice breathing of layered materials for enhanced sodium storage through interlayer spacing engineering.
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