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Abstract:
Sodium-ion batteries are a potential candidate for next-generation energy storage devices. Unfortunately, developing an anode with improved long-term cycling stability and high-rate performance remains a substantial problem. In this work, we develop that the Na+ intercalation pseudocapacitance in faceted titanium dioxide endows extreme fast charging and long cycle life in a sodium-ion battery. Theoretical calculations and comprehensive characterization exhibit that high ionic conductivity, stable solid electrolyte interphase (SEI), and pseudocapacitive behavior are essential for fast charging. This well-designed electrode demonstrates a significantly high reversible capacity of about 135 mAh g(-1) at 90 C (similar to 30 A g(-1)) for 10,000 cycles with an 87.8% retension. Coupled with a vanadium phosphate sodium Na3V2(PO4)(3) cathode, and this full cell displays a specific capacity of 310 mAh g(-1) at 0.2 A g(-1) for 100 cycles. This study unveils the key mechanisms for fast-charging sodium storage, and can also facilitate the improvement of other titanium-based anodes secondary batteries.
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CHEMICAL ENGINEERING JOURNAL
ISSN: 1385-8947
Year: 2023
Volume: 465
1 3 . 4
JCR@2023
1 3 . 4 0 0
JCR@2023
ESI Discipline: ENGINEERING;
ESI HC Threshold:35
JCR Journal Grade:1
CAS Journal Grade:1
Cited Count:
WoS CC Cited Count: 21
SCOPUS Cited Count: 24
ESI Highly Cited Papers on the List: 0 Unfold All
WanFang Cited Count:
Chinese Cited Count:
30 Days PV: 3
Affiliated Colleges: