Green molten salt synthesis and Li-ion storage performance of sodium dimolybdate

Zhu, Wenhui; Kamali, Ali Reza

doi:10.1016/j.jallcom.2020.154781

Cited by 12 publications

(3 citation statements)

References 51 publications

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“…The process is rapid and requires only a short-time heating at 1100 • C. Despite the simple and clean preparation method, the electrode made of MoO 3 /MoS 2 @G-1100 exhibits a decent Li-ion storage performance. Modification of naturally available materials for energy-storage [68][69][70] and other demanding applications [71][72][73] is a viable strategy to meet the increasing green energy demand. In this research, we explored the effect of heating at various temperatures on the ball-milled natural graphite/MoS 2 /NaCl mixture for a short period of 20 min to demonstrate that the process of fabricating MoO 3 /MoS 2 @G samples is considerably fast.…”

Section: Discussionmentioning

confidence: 99%

Molten Salt-Assisted Catalytic Preparation of MoS2/α-MoO3/Graphene as High-Performance Anode of Li-Ion Battery

Zhu

Kamali

2023

Catalysts

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We report on the facile and scalable catalytic conversion of natural graphite and MoS2 minerals into α-MoO3 nanoribbons incorporated into hexagonal MoS2 and graphene nanosheets, and evaluate the structural, morphological and electrochemical performances of the hybrid nanostructured material obtained. Mechanochemical treatment of raw materials, followed by catalytic molten salt treatment leads to the formation of nanostructures with promising electrochemical performances. We examined the effect of processing temperature on the electrochemical performance of the products. At 1100 °C, an excellent Li-ion storage capacity of 773.5 mAh g−1 is obtained after 180 cycles, considerably greater than that of MoS2 (176.8 mAh g−1). The enhanced capacity and the rate performance of this electrode are attributed to the well-integrated components, characterized by the formation of interfacial molybdenum oxycarbide layer during the synthesis process, contributing to the reduced electrical/electrochemical resistance of the sample. This unique morphology promotes the charge and ions transfer through the reduction of the Li-ion diffusion coefficient (1.2 × 10−18 cm2 s−1), enhancing the pseudocapacitive performance of the electrode; 59.3% at the scan rate of 0.5 mV s−1. This article provides a green and low-cost route to convert highly available natural graphite and MoS2 minerals into nanostructured hybrid materials with promising Li-ion storage performance.

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Section: Discussionmentioning

confidence: 99%

Molten Salt-Assisted Catalytic Preparation of MoS2/α-MoO3/Graphene as High-Performance Anode of Li-Ion Battery

Zhu

Kamali

2023

Catalysts

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“…The cost and the specic energy consumption for the preparation of graphene in molten LiCl can be estimated to be low at about US $10-20 and 25 kW h per kilogram of the graphene product, respectively. The molten salt graphene has presented superior performance in various applications including composite anode materials for high performance lithium ion batteries, [78][79][80] electrode materials for supercapacitors, 62 reusable adsorbents, 81,82 high performance ceramic composites 83 and precursors for the facile fabrication of nanodiamonds. [84][85][86][87] The application of molten salt produced graphene nanosheets as an efficient reusable adsorbent is based on its high surface area and density of edge sites, as well as its high structural stability, providing the nanosheets with the potential to become recovered aer the adsorption of organic contaminants from aqueous solutions by a simple heat treatment process is air.…”

Section: Hydrogen Exfoliation Of Graphite In Molten Saltsmentioning

confidence: 99%

Clean production and utilisation of hydrogen in molten salts

Kamali

2020

RSC Adv.

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“…At present, the chlorinating agents that can promote the volatilization of heavy metals in FA are calcium chloride (CaCl 2 ) and magnesium chloride (MgCl 2 ) (Nowak et al, 2012; Yu et al, 2016a). The method of chlorination volatilization could effectively separate the heavy metals from FA, whereas the molten salt method has the characteristics of energy conservation and environmental protection (Zhu et al, 2020). Therefore, our research group combined the two methods and adopted the molten salt method to treat FA.…”

Section: Introductionmentioning

confidence: 99%

Synergistic effect of polyvinyl chloride and coal ash on thermal separation of heavy metals from MSWI fly ash through molten salt process

et al. 2022

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Municipal solid waste incineration fly ash (FA) contains high contents of salts and high concentrations of heavy metals, which makes FA disposal extremely difficult. However, heavy metal elements could potentially be separated from FA during thermal treatment process to make it possible to be recycled. This work aims to study the volatilization of heavy metals in FA treated by molten salt method. The influence of polyvinyl chloride (PVC) and coal ash (CA) on volatilization of heavy metals was investigated. Within the scope of this study, the highest heavy metal removal rate can be under the condition: the calcium chloride/sodium chloride weight ratio 1:1, the FA/molten salt weight ratio 1:10, treatment temperature 1000°C for 2 hours in reducing atmosphere. The volatilization rates of lead, zinc, copper, chromium and manganese were 86.20, 67.53, 65.24, 50.07 and 39.45%, respectively. On the basis of molten salt treatment, adding PVC could promote the volatilization of heavy metals. The volatilization rate of lead was 96.71%, and the volatilization rates of chromium and manganese were higher than 60% when the content of PVC was 5 wt%. When adding 10 wt% CA and 1 wt% polyvinyl chloride, the volatilization rate of lead could reach 100%. The experiments and thermodynamic calculations showed that silicon dioxide and aluminium oxide in CA and hydrochloric acid decomposed from PVC could promote the chlorination and volatilization of heavy metals. The volatilized heavy metal chlorides provided the possibility of recovery and utilization of heavy metals in FA.

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Green molten salt synthesis and Li-ion storage performance of sodium dimolybdate

Cited by 12 publications

References 51 publications

Molten Salt-Assisted Catalytic Preparation of MoS2/α-MoO3/Graphene as High-Performance Anode of Li-Ion Battery

Molten Salt-Assisted Catalytic Preparation of MoS2/α-MoO3/Graphene as High-Performance Anode of Li-Ion Battery

Clean production and utilisation of hydrogen in molten salts

Synergistic effect of polyvinyl chloride and coal ash on thermal separation of heavy metals from MSWI fly ash through molten salt process

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