Self-assembly formation of hollow Ni-Fe-O nanocage architectures by metal-organic frameworks with high-performance lithium storage

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DOIResolve DOI: http://doi.org/10.1038/srep13310
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TypeArticle
Journal titleScientific Reports
ISSN2045-2322
Volume5
Article number13310
AbstractA hollow hybrid Ni-Fe-O nanomaterial (NiFe<inf>2</inf>O<inf>4</inf>) is synthesized using a precursor of metal-organic frameworks through a simple and cost-effective method. The unique hollow nanocage structures shorten the length of Li-ion diffusion. The hollow structure offers a sufficient void space, which sufficiently alleviates the mechanical stress caused by volume change. Besides, the hybrid elements allow the volume change to take place in a stepwise manner during electrochemical cycle. And thus, the hierarchical hollow NiFe<inf>2</inf>O<inf>4</inf> nanocage electrode exhibits extraordinary electrochemical performance. The stable cyclic performance is obtained for all rates from 1 C to 10 C. Even when the current reaches 10 C, the capacity can also arrive at 652 mAhg-1. Subsequently, a specific capacity of ca. 975 mAhg-1 is recovered when the current rate reduces back to 1 C after 200 cycles. This strategy that derived from NMOFs may shed light on a new route for large-scale synthesis of hollow porous hybrid nanocages for energy storage, environmental remediation and other novel applications.
Publication date
PublisherNature
LanguageEnglish
AffiliationNational Research Council Canada (NRC-CNRC); Energy, Mining and Environment
Peer reviewedYes
NPARC number21277032
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Record identifier0f4fa0d1-45ef-49c1-ae0f-721eb32ef7cc
Record created2015-11-10
Record modified2016-05-09
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