Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 9, Issue 50, Pages 43733-43738Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsami.7b14946
Keywords
phosphate; safety; zero-strain; sodium-ion batteries; energy storage
Funding
- National Key Research Program of China [2016YFB0901500]
- National Natural Science Foundation of China [21373155, 21333007]
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Development of intrinsically safe and long lifespan sodium-ion batteries,(SIBs) is urgently needed for large-scale energy storage applications. However, most of the currently developed SIBs suffer from insufficient cycle life and potential unsafety. Herein, we construct an all-phosphate sodium-ion battery (AP-SIB) using a Na3V2(PO4)(3) cathode, NaTi2(PO4)(3) anode, and nonflammable trimethyl phosphate (TMP) eleCtrolyte. The AP-SIB exhibits not only high safety, high rate performance, and ulttalong cycle life but' also zero-strain characteristics due to the inverse volume change of the phosphate cathode and anode during charge and discharge cycles, offering a safer and cycle-stable M.:don technology for electric storage applications.
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