LiV3O8 nanowires with excellent stability for aqueous rechargeable lithium batteries

Liu, Jingang; Yi, Lukai; Liu, Li; Peng, Peng

doi:10.1016/j.matchemphys.2015.05.038

Cited by 24 publications

(11 citation statements)

References 35 publications

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“…[43] In practice, the battery is not made of Ni only, and different materials are used as the anode, cathode, and current collectors. [43][44][45][46][47][48][49] Note that the electrocatalytic activity is not limited to the metallic current collectors, as the electrode materials of LIBs also show electrocatalytic activities toward HER [50] and OER; [51] though with high overpotentials, they are still within the desired voltage range of ARLBs. Therefore, the stable potential window is limited by the stability of the anode against HER and the cathode against OER.…”

Section: Operating Potential Windowmentioning

confidence: 99%

“…Holze and co‐workers showed that the stable potential window of a Ni mesh electrode is as wide as 2.8 V . Stainless steel also shows a similar potential window . In practice, the battery is not made of Ni only, and different materials are used as the anode, cathode, and current collectors.…”

Section: Conventional Aqueous Electrolytesmentioning

confidence: 99%

“…Therefore, the stable potential window is limited by the stability of the anode against HER and the cathode against OER. The problem of the available anode and cathode materials is that they have relatively low overpotentials for the water electrocatalytic reaction, and the operating voltage is normally limited to 1.5 V only . Note that the electrocatalytic activity is not limited to the metallic current collectors, as the electrode materials of LIBs also show electrocatalytic activities toward HER and OER; though with high overpotentials, they are still within the desired voltage range of ARLBs.…”

Section: Conventional Aqueous Electrolytesmentioning

confidence: 99%

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High‐Energy Aqueous Lithium Batteries

Eftekhari¹

2018

Advanced Energy Materials

158

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research, aqueous electrolytes were occasionally employed for the investigation of cathode materials instead of the conventional nonaqueous electrolytes. [9,10] It was discussed that the simplicity of an aqueous electrolyte provides a better opportunity for the fundamental studies of the process of intercalation/deintercalation of Li-ions as opposed to the nonaqueous electrolytes. For instance, although the formation of solid electrolyte interphase (SEI) is of utmost importance for the cyclability of LIB, the significant role of the electrolyte does not allow to exclusively study the electrochemical behavior of the electrode material under consideration. The current research has specifically targeted the development of ARLBs, but in practice, most of the recent papers have followed the same line of research in investigating a limited range of cathode and anode materials in the same aqueous electrolytes. [11][12][13][14][15][16][17][18][19][20][21][22][23][24][25][26][27][28] A possible reason is that the key advantage of ARLBs was low cost, and thus, the focus was limited to a few inexpensive materials (e.g., lithium salts). Aqueous electrolytes are definitely excellent choices for the fundamental studies of electrode materials, but the practical development of ARLBs needs overcoming the key obstacles rather than finding more cathode materials.In any case, aqueous electrolytes were occasionally used during the 2000s by various research groups, but there was no vivid plan for the development of ARLBs. These works have been extensively reviewed before, [29][30][31][32][33] and it is not aimed to repeat the general works on aqueous electrolytes here. During the recent years, new opportunities have been introduced, which can extend the stable potential window of aqueous electrolyte to the range of 3-4 V. Upon this advancement, aqueous electrolytes can fairly compete with the conventional nonaqueous electrolytes for the fabrication of cheaper and safer LIBs. On the other hand, novel designs such as self-healing [34] or flexible [16,35,36] ARLBs have paved the path for new practical potentials of aqueous electrolytes. The present paper specifically focuses on the recent advancements and attempts to foster the strategy of research to shed light on the pathway of this emerging area of research. Two factors are directly responsible for achieving a high energy density, the specific capacity, and the cell voltage. Since the former is not massively controlled by the electrolyte and the specific capacity of most electroactive Owing to the high voltage of lithium-ion batteries (LIBs), the dominating electrolyte is non-aqueous. The idea of an aqueous rechargeable lithium battery (ARLB) dates back to 1994, but it had attracted little attention due to the narrow stable potential window of aqueous electrolytes, which results in low energy density. However, aqueous electrolytes were employed during the 2000s for the fundamental studies of electrode materials in the absence of side reactions such as the decomposition of organic spec...

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Section: Operating Potential Windowmentioning

confidence: 99%

Section: Conventional Aqueous Electrolytesmentioning

confidence: 99%

Section: Conventional Aqueous Electrolytesmentioning

confidence: 99%

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High‐Energy Aqueous Lithium Batteries

Eftekhari¹

2018

Advanced Energy Materials

158

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“…Specifically, lithium trivanadate (Li 1+ x V 3 O 8 ), a member of the family of Li-V-O compounds, has been extensively investigated as a promising cathode material, due to several intrinsic advantages, including but not limited to its high specific capacities, excellent rate capabilities, low cost of manufacture, and relative nontoxicity . Indeed, Li-V-O compounds incorporate a surprisingly large number of phases, depending upon the relative amounts and proportions of Li, V, and O; lithium trivanadate (Li 1+ x V 3 O 8 ) denotes the majority phase.…”

Section: Introductionmentioning

confidence: 99%

Synthesis, Structural Characterization, and Growth Mechanism of Li_1+xV₃O₈ Submicron Fibers for Lithium-Ion Batteries

Yue

Wang

et al. 2018

Crystal Growth & Design

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We report on the synthesis of submicron Li1+x V3O8 fibers through a facile mixed ethanol/water solution-mediated solvothermal route in the absence of surfactants. All the raw materials used are commercially available, relatively inexpensive, and low-toxic, and these can be handled in an ambient atmosphere, rendering this synthetic route as reasonably facile and efficient. To ensure a desirable and acceptable sample crystallinity and purity, we introduced a postannealing treatment at 500 °C. The monoclinic phase formation of the fiber sample was probed in detail using a series of X-ray diffraction, scanning electron microscopy, transmission electron microscopy, infrared spectroscopy, X-ray photoelectron spectroscopy, high resolution transmission electron microscopy, and selected area electron diffraction measurements. Both morphology and chemical composition could be carefully and systematically tuned in terms of generating a class of novel, pure, and well-defined motifs of Li1+x V3O8. A plausible mechanism for the formation of submicron-diameter fibers has been discussed in addition to the expected phase transformation within our Li-V-O materials. Our comprehensive study should provide for needed fundamental insights into putting forth a viable synthesis strategy for the generation of well-defined morphological variants of layered oxide materials for battery applications.

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“…Although LiV 3 O 8 has been widely investigated, its cycling performance is limited owing to low electronic conductivity, irreversible structure phases, dissolution of various vanadium ions, and formation of unfavorable side reactions components. These characterist i c s l e a d t o c a pa c i t y f a di n g a nd l i m i t i t s electrochemical performance in aqueous electrolyte solutions owing to the narrow electrochemical stability window of water, hindering application of LiV 3 O 8 in LIBs and ARLBs [19,20]. Therefore, to overcome these issues, many researchers have applied various approaches to enhance the electrochemical performance of LiV 3 O 8 by doping [20] and application of surface coatings, such as carbon [21], polymers [22], solid and ceramic materials [23,24], and Al 2 O 3 [25].…”

Section: Introductionmentioning

confidence: 99%

Electrochemical Performance of AlF3-Coated LiV3O8 for Aqueous Rechargeable Lithium Ion Batteries

Tron

Kang

Kim

et al. 2018

J. Electrochem. Sci. Technol

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In aqueous rechargeable lithium ion batteries, LiV 3 O 8 exhibits obviously enhanced electrochemical performance after AlF 3 surface modification owing to improved surface stability to fragile aqueous electrolyte. The cycle life of LiV 3 O 8 is significantly enhanced by the presence of an AlF 3 coating at an optimal content of 1 wt.%. The results of powder X-ray diffraction, energy dispersive X-ray spectroscopy, X-ray photoelectron spectroscopy, inductively coupled plasma-optical emission spectrometry, and galvanostatic charge-discharge measurements confirm that the electrochemical improvement can be attributed mainly to the presence of AlF 3 on the surface of LiV 3 O 8. Furthermore, the AlF 3 coating significantly reduces vanadium ion dissolution and surface failure by stabilizing the surface of the LiV 3 O 8 in an aqueous electrolyte solution. The results suggest that the AlF 3 coating can prevent the formation of unfavorable side reaction components and facilitate lithium ion diffusion, leading to reduced surface resistance and improved surface stability compared to bare LiV 3 O 8 and affording enhanced electrochemical performance in aqueous electrolyte solutions.

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LiV3O8 nanowires with excellent stability for aqueous rechargeable lithium batteries

Cited by 24 publications

References 35 publications

High‐Energy Aqueous Lithium Batteries

High‐Energy Aqueous Lithium Batteries

Synthesis, Structural Characterization, and Growth Mechanism of Li_1+xV₃O₈ Submicron Fibers for Lithium-Ion Batteries

Electrochemical Performance of AlF3-Coated LiV3O8 for Aqueous Rechargeable Lithium Ion Batteries

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LiV3O8 nanowires with excellent stability for aqueous rechargeable lithium batteries

Cited by 24 publications

References 35 publications

High‐Energy Aqueous Lithium Batteries

High‐Energy Aqueous Lithium Batteries

Synthesis, Structural Characterization, and Growth Mechanism of Li1+xV3O8 Submicron Fibers for Lithium-Ion Batteries

Electrochemical Performance of AlF3-Coated LiV3O8 for Aqueous Rechargeable Lithium Ion Batteries

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Synthesis, Structural Characterization, and Growth Mechanism of Li_1+xV₃O₈ Submicron Fibers for Lithium-Ion Batteries