Disodium dimolybdate: a potential high-performance anode material for rechargeable sodium ion battery applications

Verma, Rakesh; Raman, R.K.; Varadaraju, U.V.

doi:10.1007/s10008-016-3153-3

Cited by 14 publications

(5 citation statements)

References 16 publications

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“…We note that this is a common observation for conversion reactions of materials: for Cu containing compounds the formation of nanocrystalline Cu particles was reported, while for other transitions metal containing samples the metal cations are converted into an X-ray amorphous state. [8,31,[49][50][51][52][53][54][55] Weak but clearly visible reflections of Na 0.7 Cu 0.15 CrS 2 appear again after the first charge (point G in Figure 3), confirming that Figure 2. Performance of Na/CuCrS 2 test cells applying different potential windows.…”

Section: Investigation Of Structural Changes During the Discharge/chasupporting

confidence: 62%

Elucidation of the Sodium – Copper Extrusion Mechanism in CuCrS₂: A High Capacity, Long‐Life Anode Material for Sodium‐Ion Batteries

Krengel

Hansen

Hartmann

et al. 2018

Batteries & Supercaps

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The compound CuCrS2 with a quasi‐layered crystal structure was investigated as room temperature rechargeable sodium‐ion battery electrode. It exhibits excellent performance as anode material with a high reversible capacity of 424 mAh g−1 at 700 mA g−1 after 200 cycles and a capacity retention of 98.6 % compared to the third cycle. Results of ex‐situ X‐Ray diffraction experiments performed at different stages of the discharge process demonstrate that at the beginning of Na uptake, Cu+ cations are reduced to nanosized metallic Cu particles which are expelled from the host lattice. Simultaneously, Na is inserted into the host material leading to the formation of Na0.7Cu0.15CrS2 with significantly expanded interlayer space. Metallic Cu and Na0.7Cu0.15CrS2 coexist at this stage of discharge. Increasing the amount of Na per formula unit leads to successive conversion to X‐ray amorphous Cr, nanocrystalline Na2S and metallic Cu. The formation of highly disordered metallic Cr with domain sizes in the range of few nanometres is revealed by atomic pair distribution function analysis. During the charge process, the nanocrystalline Cu particles are retained and Na0.7Cu0.15CrS2 is at least partially reformed. The finely distributed Cu particles dramatically improve the long‐time stability as evidenced by comparison of the electrochemical behaviour of mere NaCuCrS2.

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Section: Investigation Of Structural Changes During the Discharge/chasupporting

confidence: 62%

Elucidation of the Sodium – Copper Extrusion Mechanism in CuCrS₂: A High Capacity, Long‐Life Anode Material for Sodium‐Ion Batteries

Krengel

Hansen

Hartmann

et al. 2018

Batteries & Supercaps

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“…However, the increasing cost of Li due to the scarcity and uneven geographical distribution of Li resources may limit its sustainable application in the near future [5,6] . Consequently, next‐generation secondary batteries based on earth‐abundant elements, namely Na, K, and Mg, are considered promising alternatives to LIBs in future energy storage systems [7–15] . Among them, potassium‐ion batteries (PIBs) have recently attracted significant attention owing to their low cost, eco‐friendliness, and high energy density [5,6,12] .…”

Section: Introductionmentioning

confidence: 99%

Recent Progress in Electrolyte Development and Design Strategies for Next‐Generation Potassium‐Ion Batteries

Verma

Didwal

Hwang

et al. 2021

Batteries & Supercaps

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Rechargeable lithium‐ion batteries (LIBs) have attained tremendous success and are extensively used in a wide range of fields. However, due to the scarcity and uneven geographical distribution of Li resources, its price is steadily increasing, which may limit its sustainable application in the near future. Potassium‐ion batteries (PIBs) are promising alternatives to LIBs owing to the earth abundance, low cost, and eco‐friendliness of potassium, and high energy density of PIBs. Although the field of PIBs has seen significant progress in the recent years, some challenges remain that limit their application, such as the severe side reactions between the electrolyte and electrodes, which result in an unstable solid electrolyte interphase, and thus, a low coulombic efficiency. Hence, designing suitable electrolytes is necessary for the development of PIBs. This review summarises the current developments in PIB electrolytes and comprehensively discusses electrolyte design strategies for four major classes of electrolytes, namely non‐aqueous, aqueous, ionic liquid, and solid‐state electrolytes. In addition, the effects of the properties of each class of electrolyte are discussed in detail. Furthermore, ionic liquid electrolytes, an emerging class of electrolytes, are discussed in detail with respect to PIBs. Finally, several critical issues, challenges, and prospects of PIB electrolytes are discussed, and an outlook for the future research direction of PIBs is presented.

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“…Molybdenum oxide (MoO3), because of its exceptional properties, has been the subject of much revived interest as a promising candidate for a broad range of applications such as catalysis [1,2], batteries [3,4], supercapacitors [5], photo and electrochromic devices [6,7], gas sensors [8], memory devices [9], organic light emitting diodes (OLEDs) [10], Dielectric/insulation applications [11], oxide solar cells [12] , etc. MoO3 has four polymorph modifications, which include α-MoO3 (orthorhombic), β-MoO3 (monoclinic), high-pressure MoO3-II and h-MoO3 (hexagonal).…”

Section: Introductionmentioning

confidence: 99%

Microwave dielectric properties of low-temperature sinterable α-MoO3

Varghese

Siponkoski

Nelo

et al. 2018

Journal of the European Ceramic Society

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The α-MoO3 ceramics were prepared by uniaxial pressing and sintering of MoO3 powder at 650 o C and their structure, microstructure, densification and sintering and microwave dielectric properties were investigated. The sintering temperature of α-MoO3 was optimized based on the best densification and microwave dielectric properties. After sintering at 650 o C the relative permittivity was found to be 6.6 and the quality factor was 41,000 GHz at 11.3 GHz. The full-width half-maximum of the A1g Raman mode of bulk α-MoO3 at different sintering temperatures correlated well with the Qf values. Moreover, the sintered samples showed a temperature coefficient of the resonant frequency of -25 ppm/ o C in the temperature range from -40 to 85 o C and they exhibited a very low coefficient of thermal expansion of ±4 ppm/ o C. These microwave dielectric properties of α-MoO3 will be of great benefit in future MoO3 based materials and their applications.

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Disodium dimolybdate: a potential high-performance anode material for rechargeable sodium ion battery applications

Cited by 14 publications

References 16 publications

Elucidation of the Sodium – Copper Extrusion Mechanism in CuCrS₂: A High Capacity, Long‐Life Anode Material for Sodium‐Ion Batteries

Elucidation of the Sodium – Copper Extrusion Mechanism in CuCrS₂: A High Capacity, Long‐Life Anode Material for Sodium‐Ion Batteries

Recent Progress in Electrolyte Development and Design Strategies for Next‐Generation Potassium‐Ion Batteries

Microwave dielectric properties of low-temperature sinterable α-MoO3

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Disodium dimolybdate: a potential high-performance anode material for rechargeable sodium ion battery applications

Cited by 14 publications

References 16 publications

Elucidation of the Sodium – Copper Extrusion Mechanism in CuCrS2: A High Capacity, Long‐Life Anode Material for Sodium‐Ion Batteries

Elucidation of the Sodium – Copper Extrusion Mechanism in CuCrS2: A High Capacity, Long‐Life Anode Material for Sodium‐Ion Batteries

Recent Progress in Electrolyte Development and Design Strategies for Next‐Generation Potassium‐Ion Batteries

Microwave dielectric properties of low-temperature sinterable α-MoO3

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Elucidation of the Sodium – Copper Extrusion Mechanism in CuCrS₂: A High Capacity, Long‐Life Anode Material for Sodium‐Ion Batteries

Elucidation of the Sodium – Copper Extrusion Mechanism in CuCrS₂: A High Capacity, Long‐Life Anode Material for Sodium‐Ion Batteries