Porous Cryo-Dried MXene for Efficient Capacitive Deionization

Bao, Weizhai; Tang, Xiao; Guo, Xin; Choi, Soo Jung; Wang, Chengyin; Gogotsi, Yury; Wang, Guoxiu

doi:10.1016/j.joule.2018.02.018

Cited by 370 publications

(253 citation statements)

References 31 publications

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“…Summary of the electrochemical performance of representative quinone electrode materials in LIBs. 2019, 6,1900431 was maintained at 90% of the C initial . B, Structure formula, abbreviations, molecular weight (M, g mol −1 ).…”

Section: Monomeric Benzoquinonesmentioning

confidence: 99%

“…The capacities of AQ-8, AQ-9, and AQ-10 after 100 cycles were 54-86% of the C initial , and it was apparent that the heterocyclic structure could promote the nucleophilic addition reaction. 2019, 6,1900431 -19) electrodes: a-c) fresh electrode, d-f) before cycling, g-f) after 5 cycles, and j-l) after 10 cycles. Therefore, AQ-9 exhibited the best electrochemical performance.…”

Section: Monomeric Benzoquinonesmentioning

confidence: 99%

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Molecular Design Strategies for Electrochemical Behavior of Aromatic Carbonyl Compounds in Organic and Aqueous Electrolytes

et al. 2019

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To sustainably satisfy the growing demand for energy, organic carbonyl compounds (OCCs) are being widely studied as electrode active materials for batteries owing to their high capacity, flexible structure, low cost, environmental friendliness, renewability, and universal applicability. However, their high solubility in electrolytes, limited active sites, and low conductivity are obstacles in increasing their usage. Here, the nucleophilic addition reaction of aromatic carbonyl compounds (ACCs) is first used to explain the electrochemical behavior of carbonyl compounds during charge–discharge, and the relationship of the molecular structure and electrochemical properties of ACCs are discussed. Strategies for molecular structure modifications to improve the performance of ACCs, i.e., the capacity density, cycle life, rate performance, and voltage of the discharge platform, are also elaborated. ACCs, as electrode active materials in aqueous solutions, will become a future research hotspot. ACCs will inevitably become sustainable green materials for batteries with high capacity density and high power density.

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Section: Monomeric Benzoquinonesmentioning

confidence: 99%

Section: Monomeric Benzoquinonesmentioning

confidence: 99%

Molecular Design Strategies for Electrochemical Behavior of Aromatic Carbonyl Compounds in Organic and Aqueous Electrolytes

et al. 2019

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“…MXenes, a family of 2D transition metal carbides and nitrides, were developed by a group of researchers from Drexel University. [13][14][15][16][17] MXenes have been reported to be highly efficient electrode materials for energy conversion devices (such as triboelectric nanogenerators [18] and water splitting devices [19] ) and energy storage devices (including supercapacitors [20] and batteries [21] ) as well as for other applications (e.g., capacitive desalination [22] and electromagnetic interference shielding [23] ). The MAX phases have the form M n+1 AX n (n = 1-3), where "M" represents a transition metal, "A" usually represents a group IIIA or IVA element (such as Al, Ga, Si, or Ge), and "X" represents carbon and/ or nitrogen.…”

Section: Introductionmentioning

confidence: 99%

2D Metal Carbides and Nitrides (MXenes) as High‐Performance Electrode Materials for Lithium‐Based Batteries

Tang

Guo

et al. 2018

Advanced Energy Materials

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394

190

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Tremendous efforts are devoted to developing advanced electrode materials with superior electrochemical performance, high energy density, and high power density for energy storage and conversion. Two‐dimensional (2D) materials, owing to their unique properties, have shown great potential for energy storage. Following the discovery of graphene, a new family of 2D transition metal carbides/nitrides, MXenes, derived from MAX phase precursors, have attracted extensive attention in recent years. The superior physical and chemical properties of MXenes include high mechanical strength, excellent electrical conductivity, multiple possible surface terminations, hydrophilic features, superior specific surface area, and the ability to accommodate intercalants. When applied as electrodes in lithium‐based batteries, MXenes have demonstrated excellent performance. In this progress report, the authors summarize the recent advances of MXenes and MXene‐based composites in terms of synthesis strategies, morphology engineering, physical/chemical properties, and their applications in lithium‐ion batteries and lithium–sulfur batteries. Furthermore, challenges and perspectives for MXenes and MXene‐based composites for lithium‐based energy storage devices are also outlined.

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“…[126,166,174,195] The p-Ti 3 C 2 T x /CNT composites have shown outstanding electrochemical advantages as a sodium ion battery electrode material. [246,264] For example we have applied Sb 2 O 3 /Ti 3 C 2 T x composite as an electrode material which shows a high capacity of 295 mA h g −1 at 2 A g −1 and better cycling performance (472 mA h g −1 after 100 cycles at 100 mA g −1 ) than the plain Ti 3 C 2 T x electrode (Figure 8i). Therefore, in p-Ti 3 C 2 T x /CNT composites, both the diffusion of sodium ions and e − conductivity have been improved effectively, resulting in the excellent electrochemical performance in SIBs (500 mA h cm −3 at 20 mA g −1 ).…”

Section: Sodium-ion Batteries Applications Of Mxene-based Compositesmentioning

confidence: 99%

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

Yang

Bao

Jaumaux

et al. 2019

Adv Materials Inter

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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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Porous Cryo-Dried MXene for Efficient Capacitive Deionization

Abstract: HIGHLIGHTSNovel synthesis of aerogel-like porous MXene architectures Porous MXene architectures can effectively prevent the restack of MXene nanosheets Porous MXene demonstrated a high electroadsorption capacity MXene electrodes achieved a high capacitive deionization capacity

Cited by 370 publications

References 31 publications

Molecular Design Strategies for Electrochemical Behavior of Aromatic Carbonyl Compounds in Organic and Aqueous Electrolytes

Molecular Design Strategies for Electrochemical Behavior of Aromatic Carbonyl Compounds in Organic and Aqueous Electrolytes

2D Metal Carbides and Nitrides (MXenes) as High‐Performance Electrode Materials for Lithium‐Based Batteries

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

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