Journal
CHEMICAL COMMUNICATIONS
Volume 55, Issue 61, Pages 9043-9046Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c9cc04136b
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Funding
- National Key Research Program of China [2016YFB0901500]
- National Natural Science Foundation of China [21875171, 21673165, 21333007]
- Science and Technology Project of State Grid [SGRIDGKJ[2017]841]
- Fundamental Research Funds for the Central Universities [2042018kf0007]
- China Postdoctoral Science Foundation [2016M592383, 2017T100574]
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We report for the first time a zero-strain cathode, Na4Fe7(PO4)(6), for sodium-ion batteries (SIBs). This new iron-based polyanionic cathode delivers a reversible capacity of 66.5 mA h g(-1) at 5 mA g(-1) with almost 100% capacity retention over 1000 cycles under 200 mA g(-1), and the outstanding performance benefits from single-phase-transition processes with a tiny volume change of only similar to 0.24%.
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