Enhancing Li-ion capacity and rate capability in cation-defective vanadium ferrite aerogels <i>via</i> aluminum substitution

Chervin, Christopher N.; DeBlock, Ryan H.; Parker, Joseph F.; Hudak, Bethany M.; Skeele, Nathaniel L.; Ko, Jesse S.; Rolison, Debra R.; Long, Jeffrey W.

doi:10.1039/d1ra00819f

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“…The wide interlayer spacing between the divanadium pentoxide (V 2 O 5 ) layers suggests that layered V 2 O 5 is a better electrode material for batteries. It may be made in several shapes and sizes, as well as aerogels, xerogels, nanocubes, nanoribbons, and nanosheets, which has a significant impact on the battery’s electrochemical performance made of V 2 O 5 -based electrodes. , Nevertheless, most of the literature shows that V 2 O 5 has been evaluated as a cathode material at high voltages (1.0–3.5 V vs Na + /Na). Passerini and colleagues have studied the use of V 2 O 5 · n H 2 O as the negative electrode for SIBs, demonstrating that V 2 O 5 · n H 2 O can offer a discharge capacity of about 200 mAhg –1 .…”

Section: Introductionmentioning

confidence: 99%

Graphene Modified Vanadium Oxide Composite Materials Used in Aqueous Na-Ion Batteries

et al. 2021

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Divanadium pentoxide as an electrode material in the aqueous-based battery has been widely explored because of its higher theoretical capacity and potential crystal structure. Here, in this work, we present vanadium pentoxide modified with graphene (V 2 O 5 @G) as an anode material in an aqueous rechargeable sodium-ion battery (ARSB) prepared via a facile one-step hydrothermal method followed by annealing. The complete ARSB was assembled by employing Na 0.44 MnO 2 as the cathode material, which was synthesized via the sol−gel method. The assembled ARSBs were subjected to cyclic voltammetry, charge− discharge, and rate performance; it has been suggested that incorporation of graphene has a positive effect on the overall battery performance observed through charge−discharge (38.2 mAh g −1 ), cyclic capacity retention (200 cycles at 1A g −1 with a retention rate of 53%), and rate performance in contrast with pristine vanadium pentoxide. Further investigation suggested V 2 O 5 @G had larger sodium storage capacity, improved rate capability, increased Na + diffusivity, and reduced electrochemical reaction resistance.

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Section: Introductionmentioning

confidence: 99%

Graphene Modified Vanadium Oxide Composite Materials Used in Aqueous Na-Ion Batteries

et al. 2021

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Enhancing Li-ion capacity and rate capability in cation-defective vanadium ferrite aerogels via aluminum substitution

Abstract: Substituting electroinactive Al3+ into vanadium ferrite aerogels boosts capacity to battery-relevant levels but in a material that expresses pseudocapacitive character and high-rate performance.

Cited by 1 publication

References 42 publications

Graphene Modified Vanadium Oxide Composite Materials Used in Aqueous Na-Ion Batteries

Graphene Modified Vanadium Oxide Composite Materials Used in Aqueous Na-Ion Batteries

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