Flexible MXene–graphene electrodes with high volumetric capacitance for integrated co-cathode energy conversion/storage devices

Xu, Shuaikai; Wei, Guodong; Li, Junzhi; Han, Wei; Gogotsi, Yury

doi:10.1039/c7ta05721k

Cited by 243 publications

(134 citation statements)

References 38 publications

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“…Due to the existence of surface terminations, the delaminated Ti 3 C 2 T x nanoflakes are hydrophilic with a high negative ζ potential in the range of −39.5 to −63 mV . Thus, the dispersion stability of Ti 3 C 2 T x in aqueous media allows various types of processing to fabricate Ti 3 C 2 T x ‐based materials such as freestanding films and composites with other nanomaterials or polymers . Recently, Maleski et al systematically investigated the dispersions of Ti 3 C 2 T x nanosheets in organic solvents ( Figure a) .…”

Section: Propertiesmentioning

confidence: 99%

Recent Advances in Layered Ti₃C₂T_x MXene for Electrochemical Energy Storage

Xiong

Bai

et al. 2018

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816

434

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Ti C T , a typical representative among the emerging family of 2D layered transition metal carbides and/or nitrides referred to as MXenes, has exhibited multiple advantages including metallic conductivity, a plastic layer structure, small band gaps, and the hydrophilic nature of its functionalized surface. As a result, this 2D material is intensively investigated for application in the energy storage field. The composition, morphology and texture, surface chemistry, and structural configuration of Ti C T directly influence its electrochemical performance, e.g., the use of a well-designed 2D Ti C T as a rechargeable battery anode has significantly enhanced battery performance by providing more chemically active interfaces, shortened ion-diffusion lengths, and improved in-plane carrier/charge-transport kinetics. Some recent progresses of Ti C T MXene are achieved in energy storage. This Review summarizes recent advances in the synthesis and electrochemical energy storage applications of Ti C T MXene including supercapacitors, lithium-ion batteries, sodium-ion batteries, and lithium-sulfur batteries. The current opportunities and future challenges of Ti C T MXene are addressed for energy-storage devices. This Review seeks to provide a rational and in-depth understanding of the relation between the electrochemical performance and the nanostructural/chemical composition of Ti C T , which will promote the further development of 2D MXenes in energy-storage applications.

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Section: Propertiesmentioning

confidence: 99%

Recent Advances in Layered Ti₃C₂T_x MXene for Electrochemical Energy Storage

Xiong

Bai

et al. 2018

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“…These weak bonds facilitate the delamination of multilayered Ti 3 C 2 T x into single layers or a few layers . By using a sonication process or even manual shaking, the as‐synthesized multilayered Ti 3 C 2 T x can be fully and easily delaminated …”

Section: Mxenes Synthesismentioning

confidence: 99%

Two‐Dimensional Transition Metal Carbides and Nitrides (MXenes): Synthesis, Properties, and Electrochemical Energy Storage Applications

Zhang

et al. 2019

Energy & Environ Materials

416

181

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A family of 2D transition metal carbides and nitrides known as MXenes has received increasing attention since the discovery of Ti3C2 in 2011. To date, about 30 different MXenes with well‐defined structures and properties have been synthesized, and many more are theoretically predicted to exist. Due to the numerous assets including excellent mechanical properties, metallic conductivity, unique in‐plane anisotropic structure, tunable band gap, and so on, MXenes rapidly positioned themselves at the forefront of the 2D materials world and have found numerous promising applications. Particular interest is devoted to applications in electrochemical energy storage, whereby 2D MXenes work either as electrodes, additives, separators, or hosts. This review summarizes recent advances in the synthesis, fundamental properties and composites of MXene and highlights the state‐of‐the‐art electrochemical performance of MXene‐based electrodes/devices. The progresses in the field of supercapacitors and Li‐ion batteries, Li‐S batteries, Na‐ and other alkali metal ion batteries are reviewed, and current challenges and new opportunities for MXenes in this surging energy storage field are presented. In the focus of interest is the possibility to boost device‐level performance, particularly that of rechargeable batteries, which are of utmost importance in future energy technologies. Very recently, the 2019 Nobel Prize in Chemistry was awarded to the inventors of the Li‐ion battery. For sure, this will provide an additional stimulation to study fundamental aspects of electrochemical energy storage.

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Section: Discussionmentioning

confidence: 99%

“…[69] Besides, Fan et al also reported a method of growing 2D layer Mo 2 C on vertically distributed graphene, which was obtained from vertically distributed CNTs. [131,[140][141][142] Our group directly synthesizes TI 3 C 2 T x / rGO composite by solution mixing and has successfully infiltrated sulfur into the resulting composite. In order to deposit MoC 2 on the surface of graphene uniformly, molybdenum metal must be first sprayed on the surface of graphene, and then the Mo-based precursor is carbonized with a gaseous carbon source to form 2D layer Mo 2 C. [130] Figure 3b shows the schematic preparation process of the Mo 2 C/N-doped graphene (N-G) composite.…”

Section: Mxene-graphene Compositesmentioning

confidence: 99%

MXene‐Based Composites: Synthesis and Applications in Rechargeable Batteries and Supercapacitors

Yang

Bao

Jaumaux

et al. 2019

Adv Materials Inter

257

142

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The family of 2D transition metal carbides, nitrides, and carbonitrides (collectively called MXenes) is rapidly studied since the initial synthesis of Ti3C2Tx (MXene). The surface of MXenes etched by hydrofluoric acid has hydrophilic groups (F, OH, and O), which leads the surface to be negatively charged. Consequently, the negatively charged surface can facilitate the compounding of MXenes with other positively charged materials and prevent MXenes from aggregating with some negatively charged substances, thus promoting the formation of a stable dispersion. The MXene‐based composites have better electrochemical performance than both precursors due to synergistic effects. This review elaborates and discusses the development of MXene‐based composites. It is aimed to summarize the various methods of fabricating MXene‐based composites. The applications of MXene‐based composites in batteries and supercapacitors are presented along with analysis of their excellent electrochemical performances. Finally, the authors propose the approach for further enhancing the electrochemical performances of MXene‐based composite electrode materials.

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Flexible MXene–graphene electrodes with high volumetric capacitance for integrated co-cathode energy conversion/storage devices

Abstract: Flexible porous Ti3C2Txdecorated rGO films with high volumetric capacitance were produced to eliminate the need for the delamination of MXenes.

Cited by 243 publications

References 38 publications

Recent Advances in Layered Ti₃C₂T_x MXene for Electrochemical Energy Storage

Recent Advances in Layered Ti₃C₂T_x MXene for Electrochemical Energy Storage

Two‐Dimensional Transition Metal Carbides and Nitrides (MXenes): Synthesis, Properties, and Electrochemical Energy Storage Applications

MXene‐Based Composites: Synthesis and Applications in Rechargeable Batteries and Supercapacitors

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Flexible MXene–graphene electrodes with high volumetric capacitance for integrated co-cathode energy conversion/storage devices

Abstract: Flexible porous Ti3C2Txdecorated rGO films with high volumetric capacitance were produced to eliminate the need for the delamination of MXenes.

Cited by 243 publications

References 38 publications

Recent Advances in Layered Ti3C2Tx MXene for Electrochemical Energy Storage

Recent Advances in Layered Ti3C2Tx MXene for Electrochemical Energy Storage

Two‐Dimensional Transition Metal Carbides and Nitrides (MXenes): Synthesis, Properties, and Electrochemical Energy Storage Applications

MXene‐Based Composites: Synthesis and Applications in Rechargeable Batteries and Supercapacitors

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Recent Advances in Layered Ti₃C₂T_x MXene for Electrochemical Energy Storage

Recent Advances in Layered Ti₃C₂T_x MXene for Electrochemical Energy Storage