In:
Nanoscale, Royal Society of Chemistry (RSC), Vol. 14, No. 29 ( 2022), p. 10428-10438
Abstract:
Binary transition metal oxides (BTMOs) are regarded as potential anode materials for lithium–ion batteries (LIBs) owing to their low cost, high specific capacities, and environmental friendliness. In this work, MnV 2 O 6 nanoflakes are successfully synthesized by a facile hydrothermal method. When evaluated as an anode material for LIBs, benefiting from the activation process, the as-prepared MnV 2 O 6 nanoflake electrode delivers a high reversible specific capacity of 1439 mA h g −1 after 300 cycles at a current density of 200 mA g −1 , and especially presents a specific capacity of 1010 mA h g −1 after 700 cycles at a higher current density of 1 A g −1 . Furthermore, MnV 2 O 6 shows a pleasurable rate capability; a reversible specific capacity of 867 mA h g −1 can be obtained at a current density of 2000 mA g −1 , and when the current density is returned to 200 mA g −1 and continues for another 80 cycles, the specific capacity can still reach 1499 mA h g −1 . Meanwhile, the morphology variation and electrochemical kinetic behavior of the MnV 2 O 6 electrode during cycling are scrutinized in detail. After that, the electrochemical reaction mechanism of MnV 2 O 6 during the discharge/charge process is corroborated by in situ X-ray diffraction (XRD), which involves the coexistence of a conversion reaction and solid solution behavior. The practical application of MnV 2 O 6 nanoflakes as an anode material is examined as well. Sure enough, the NCM811//MnV 2 O 6 full-cell exhibits excellent lithium-storage performance.
Type of Medium:
Online Resource
ISSN:
2040-3364
,
2040-3372
Language:
English
Publisher:
Royal Society of Chemistry (RSC)
Publication Date:
2022
detail.hit.zdb_id:
2515664-0
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