Bismuth Oxychloride/MXene symmetric supercapacitor with high volumetric energy density

Xia, Qixun; Shinde, Nanasaheb M.; Yun, Je Moon; Zhang, Tengfei; Mane, Rajaram S.; Mathur, Sanjay; Kim, Kwang Ho

doi:10.1016/j.electacta.2018.03.168

Cited by 159 publications

(45 citation statements)

References 59 publications

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“…MXenes, a new but quickly expanding class of 2D transition metal carbides and nitrides, have showed great potential in supercapacitor electrodes applications because of their enriched features of good electrical conductivity, remarkable chemical durability, hydrophilic nature, and intercalation characteristics [12][13][14][15][16][17][18][19][20][21]. Generally, MXenes are referred to formula M n+1 X n T x (where M is an early transition metal, X is C or N, T is a surface termination -OH, -F and/or -O, and n is 1, 2, or 3.)…”

Section: Introductionmentioning

confidence: 99%

RETRACTED: Nitrogen Doped Intercalation TiO2/TiN/Ti3C2Tx Nanocomposite Electrodes with Enhanced Pseudocapacitance

et al. 2020

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Layered two-dimensional titanium carbide (Ti3C2Tx), as an outstanding MXene member, has captured increasing attention in supercapacitor applications due to its excellent chemical and physical properties. However, the low gravimetric capacitance of Ti3C2Tx restricts its rapid development in such applications. Herein, this work demonstrates an effective and facile hydrothermal approach to synthesize nitrogen doped intercalation TiO2/TiN/Ti3C2Tx with greatly improved gravimetric capacitance and excellent cycling stability. The hexamethylenetetramine (C6H12N4) in hydrothermal environment acted as the nitrogen source and intercalants, while the Ti3C2Tx itself was the titanium source of TiO2 and TiN. We tested the optimized nitrogen doped intercalation TiO2/TiN/Ti3C2Tx electrodes in H2SO4, Li2SO4, Na2SO4, LiOH and KOH electrolytes, respectively. The electrode in H2SO4 electrolyte delivered the best electrochemical performance with high gravimetric capacitance of 361 F g−1 at 1 A g−1 and excellent cycling stability of 85.8% after 10,000 charge/discharge cycles. A systematic study of material characterization combined with the electrochemical performances disclosed that TiO2/TiN nanoparticles, the introduction of nitrogen and the NH4+ intercalation efficaciously increased the specific surface areas, which is beneficial for facilitating electrolyte ions transportation. Given the excellent performance, nitrogen doped intercalation TiO2/TiN/Ti3C2Tx bodes well as a promising pseudocapacitor electrode for energy storage applications.

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Section: Introductionmentioning

confidence: 99%

RETRACTED: Nitrogen Doped Intercalation TiO2/TiN/Ti3C2Tx Nanocomposite Electrodes with Enhanced Pseudocapacitance

et al. 2020

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“…The hybridization of Ti 3 C 2 T x with other materials into a two-dimensional heterostructure is beneficial to increase the specific surface area of the material and expose more active sites. The chemical bath deposition method was used to deposit a petal-like bismuth oxychloride (BiOCl) on the surface and between the Ti 3 C 2 T x nanosheets to increase the interlayer spacing of the material, which significantly increases the surface area of Ti 3 C 2 T x [129]. The high conductivity of BiOCl leads to rapid electron transfer and contribution of faradic reaction, and the surface of 5 mV s −1 [123] https://doi.org/10.1007/s40820-020-0415-5 © The authors the composite membrane produces a lot of mesopores to increase the accessible sites of electrolyte ions [129].…”

Section: Other Materialsmentioning

confidence: 99%

Enhancing Capacitance Performance of Ti3C2Tx MXene as Electrode Materials of Supercapacitor: From Controlled Preparation to Composite Structure Construction

et al. 2020

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HIGHLIGHTS • The traditional and novel etching methods are summarized and compared, especially fluorine-free method. The methods for accelerating exfoliation of Ti 3 C 2 T x are classified. • The energy storage mechanisms of Ti 3 C 2 T x in different electrolytes are compared. Based on energy storage mechanisms, the influencing factors of morphology and surface functional groups are discussed.

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“…In addition, a very high energy density (15.2 Wh/kg) at a power density of 567 W/kg was evidenced by a symmetrical supercapacitor assembled using BiOCl nanosheets/ immobilized Ti3C2Tx MXene nanocomposites; the performance was significantly better than that of an earlier symmetric supercapacitor created using Ti3C2Tx MXene nanocomposites [121]. The former supercapacitor exhibited cycling capability; the volumetric capacitance fell by only 5% after 5,000 cycles at 10 A/g [120].…”

Section: Supercapacitorsmentioning

confidence: 96%

“…A high areal capacitance (610 F/cm 3 ) was evident even at this high mass-loading rate. the surfaces of Ti3C2Tx MXene nanocomposite flakes via simple and cost-effective chemical bath deposition [120]. Figure 4(c) shows nanocomposite preparation.…”

Section: Supercapacitorsmentioning

confidence: 99%

Review of MXenes as new nanomaterials for energy storage/delivery and selected environmental applications

et al. 2018

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Energy and environmental issues presently attract a great deal of scientific attention. Recently, two-dimensional MXenes and MXene-based nanomaterials have attracted increasing interest because of their unique properties (e.g., remarkable safety, a very large interlayer spacing, environmental flexibility, a large surface area, and thermal conductivity). In 2011, multilayered MXenes (Ti 3 C 2 T x , a new family of two-dimensional (2D) materials) produced by etching an A layer from a MAX phase of Ti 3 AlC 2 , were first described by researchers at Drexel University. The term "MXene" was coined to distinguish this new family of 2D materials from graphene, and applies to both the original MAX phases and MXenes fabricated from them. We present a comprehensive review of recent studies on energy and environmental applications of MXene and MXene-based nanomaterials, including energy conversion and storage, adsorption, membrane, photocatalysis, and antimicrobial. Future research needs are discussed briefly with current challenges that must be overcome before we completely understand the extraordinary properties of MXene and MXene-based nanomaterials.

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Bismuth Oxychloride/MXene symmetric supercapacitor with high volumetric energy density

Cited by 159 publications

References 59 publications

RETRACTED: Nitrogen Doped Intercalation TiO2/TiN/Ti3C2Tx Nanocomposite Electrodes with Enhanced Pseudocapacitance

RETRACTED: Nitrogen Doped Intercalation TiO2/TiN/Ti3C2Tx Nanocomposite Electrodes with Enhanced Pseudocapacitance

Enhancing Capacitance Performance of Ti3C2Tx MXene as Electrode Materials of Supercapacitor: From Controlled Preparation to Composite Structure Construction

Review of MXenes as new nanomaterials for energy storage/delivery and selected environmental applications

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