2D MXenes: Synthesis, properties, and electrochemical energy storage for supercapacitors – A review

Baig, Mutawara Mahmood; Gul, Iftikhar Hussain; Baig, Sherjeel Mahmood; Shahzad, Faisal

doi:10.1016/j.jelechem.2021.115920

Cited by 104 publications

(44 citation statements)

References 164 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…One of the most important requirements for all human activities, in order to drive modern technology, is energy, which is used in a wide range of applications such as automotive fuels, animal feeds, and electronic device batteries. 1,2 Hence, the usage of electricity is dramatically increased and the need of energy storage is also raised. The growing need for developing energy resources has been ever-increased due to the depletion of fossil fuels.…”

Section: Introductionmentioning

confidence: 99%

Novel synthesis of layeredMoS₂/TiO₂/CNTnanocomposite as a potential electrode for high performance supercapacitor applications

Vinodhini

Xavier

2022

Intl J of Energy Research

View full text Add to dashboard Cite

Summary This work is aimed to synthesize hybrid nanocomposite electrode materials for supercapacitor applications. The carbon nanotubes (CNTs) are incorporated into MoS2 as well as TiO2 to form different hybrid electrode materials such as MoS2/CNTs, TiO2/CNTs, and MoS2/TiO2/CNTs in an effort to improve the electrochemical performance. The resulting hybrid electrode materials are examined by SEM, TEM, XRD, XPS, and Raman studies. Cyclic voltammetry and galvanostatic charge‐discharge tests are used to evaluate the specific capacitance and charge‐discharge stability of the synthesized MoS2/TiO2/CNTs. Among the hybrid electrode materials investigated, the MoS2/TiO2/CNTs exhibits superior electrochemical performance with specific capacitance of 1252.57 mA h/g at a scan rate 20 mV/s as compared with MoS2/CNTs (810.53 mA h/g), TiO2/CNTs (607.10 mA h/g), and CNTs (204.35 mA h/g). All electrochemical tests were carried out in a solution of 1 M KOH. The Rct and Rf for the MoS2/TiO2/CNTs electrode were found to be 1.7 Ω.cm2 and 2.1 Ω.cm2, respectively, which were significantly lower than the corresponding Rct (40.2 Ω.cm2) and Rf (51.1 Ω.cm2) for the CNTs electrode, indicating that the MoS2/TiO2/CNTs has a significantly lower overall impedance, which could be one of the key factors responsible for the improved electrochemical performance of the MoS2/TiO2/CNTs. Moreover, this MoS2/TiO2/CNTs hybrid electrode displays good cycling stability with the capacitance retention of 98.83% after 10 000 cycles of charge‐discharge at 1 A/g. The energy density and power density of MoS2/TiO2/CNTs composites are found to be 757.80 Wh/kg and 4546.80 W/kg respectively.

show abstract

Section: Introductionmentioning

confidence: 99%

Novel synthesis of layeredMoS₂/TiO₂/CNTnanocomposite as a potential electrode for high performance supercapacitor applications

Vinodhini

Xavier

2022

Intl J of Energy Research

View full text Add to dashboard Cite

show abstract

“…The interlayer spacing of MXene etched in situ HF is about 0.28 nm larger than 50% HF etched MXene because of water molecules (0.27 nm) and the cations between the sheets of MXene. [ 52 ] In addition, different concentrations of HF also result in different surface functional groups. For instance, 50 wt% HF‐etched MXenes have additional F surface functional groups, while 5 wt% HF or in situ HF etched MXene have additional O surface functional groups to additional defects like atomic vacancies.…”

Section: Preparation Methods Of 2d Mxenesmentioning

confidence: 99%

The Emergence of 2D MXenes Based Zn‐Ion Batteries: Recent Development and Prospects

Javed

Mateen

Ali

et al. 2022

Small

103

View full text Add to dashboard Cite

Rechargeable zinc‐ion batteries (ZIBs) with exceptional theoretical capacity have garnered significant interest in large‐scale electrochemical energy storage devices due to their low cost, abundant material, inherent safety, high specific energy, and ecofriendly nature. Metal carbides/nitrides, known as MXenes, have emerged as a large family of 2D transition metal carbides or carbonitrides with excellent properties, e.g., high electrical conductivity, large surface functional groups (e.g., F, O, and OH), low energy barriers for the diffusion of electrolyte ions with wide interlayer spaces. After a decade of effort, significant development has been achieved in the synthesis, properties, and applications of MXenes. Thus, it has opened up various exciting opportunities to construct advanced MXene‐based nanostructures for ZIBs with excellent specific energy and power. Herein, this review summarizes the advances across multiple synthesis routes, related properties, morphological and structural characteristics, and chemistries of MXenes for ZIBs. The recent development of MXene‐based electrodes is introduced, and electrolytes for ZIBs are elucidated in detail. MXene‐based rocking chair ZIBs, strategies to enhance the performance of MXene‐based cathodes, suppress the dendrites in MXene‐based anodes, and MXene‐based flexible ZIBs are pointed out. A rational design and modification of the MXenes as well as the production of composites with metal oxides exhibits promise in solving issues and enhancing the electrochemical performance of ZIBs. Finally, the present challenges and future prospects for MXene‐based ZIBs are discussed.

show abstract

“…Recently, theoretical analyses utilizing computer approaches have characterized the features of MXenes. The most attractive qualities linked to energy storage are discussed below [ 81 ].…”

Section: Properties Of Mxenesmentioning

confidence: 99%

MXenes as Emerging Materials: Synthesis, Properties, and Applications

et al. 2022

View full text Add to dashboard Cite

Due to their unique layered microstructure, the presence of various functional groups at the surface, earth abundance, and attractive electrical, optical, and thermal properties, MXenes are considered promising candidates for the solution of energy- and environmental-related problems. It is seen that the energy conversion and storage capacity of MXenes can be enhanced by changing the material dimensions, chemical composition, structure, and surface chemistry. Hence, it is also essential to understand how one can easily improve the structure–property relationship from an applied point of view. In the current review, we reviewed the fabrication, properties, and potential applications of MXenes. In addition, various properties of MXenes such as structural, optical, electrical, thermal, chemical, and mechanical have been discussed. Furthermore, the potential applications of MXenes in the areas of photocatalysis, electrocatalysis, nitrogen fixation, gas sensing, cancer therapy, and supercapacitors have also been outlooked. Based on the reported works, it could easily be observed that the properties and applications of MXenes can be further enhanced by applying various modification and functionalization approaches. This review also emphasizes the recent developments and future perspectives of MXenes-based composite materials, which will greatly help scientists working in the fields of academia and material science.

show abstract

2D MXenes: Synthesis, properties, and electrochemical energy storage for supercapacitors – A review

Cited by 104 publications

References 164 publications

Novel synthesis of layeredMoS₂/TiO₂/CNTnanocomposite as a potential electrode for high performance supercapacitor applications

Novel synthesis of layeredMoS₂/TiO₂/CNTnanocomposite as a potential electrode for high performance supercapacitor applications

The Emergence of 2D MXenes Based Zn‐Ion Batteries: Recent Development and Prospects

MXenes as Emerging Materials: Synthesis, Properties, and Applications

Contact Info

Product

Resources

About

2D MXenes: Synthesis, properties, and electrochemical energy storage for supercapacitors – A review

Cited by 104 publications

References 164 publications

Novel synthesis of layeredMoS2/TiO2/CNTnanocomposite as a potential electrode for high performance supercapacitor applications

Novel synthesis of layeredMoS2/TiO2/CNTnanocomposite as a potential electrode for high performance supercapacitor applications

The Emergence of 2D MXenes Based Zn‐Ion Batteries: Recent Development and Prospects

MXenes as Emerging Materials: Synthesis, Properties, and Applications

Contact Info

Product

Resources

About

Novel synthesis of layeredMoS₂/TiO₂/CNTnanocomposite as a potential electrode for high performance supercapacitor applications

Novel synthesis of layeredMoS₂/TiO₂/CNTnanocomposite as a potential electrode for high performance supercapacitor applications