Stable TiVCTx/poly-o-phenylenediamine composites with three-dimensional tremella-like architecture for supercapacitor and Li-ion battery applications

Li, Yingxue; Zhang, Jinping; Cheng, Yan; Feng, Kaiyue; Li, Jing; Yang, Liying; Yin, Shougen

doi:10.1016/j.cej.2022.134578

Cited by 33 publications

(16 citation statements)

References 49 publications

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“…Additionally, in the spectrum of the TiVCT x MXene, a diffraction peak appears at a small angle of 6.85°, indicating the introduction of other molecules (according to a study by Li et al 17 ). Fig.…”

Section: Resultsmentioning

confidence: 82%

“…Li et al 16 investigated the electrochemical properties of the TiVCT x MXene, and the results showed that the TiVCT x MXene exhibited metallic properties with high electronic conductivity, and its comprehensive electrochemical performance is better than that of the Ti 2 C MXene. Li et al 17 prepared TiVCT x MXenes and investigated their electrochemical properties, and discovered that the performance of the TiVCT x MXenes did not yield the desired results. They then used o -phenylenediamine ( o -PD) as a metamer for oxidant-free polymerization and mixed it with the prepared TiVCT x to obtain three-dimensionally stable TiVCT x /poly- o -PD hybrids.…”

Section: Introductionmentioning

confidence: 99%

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2D TiVCT_x layered nanosheets grown on nickel foam as highly efficient electrocatalysts for the hydrogen evolution reaction

et al. 2022

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Section: Resultsmentioning

confidence: 82%

Section: Introductionmentioning

confidence: 99%

2D TiVCT_x layered nanosheets grown on nickel foam as highly efficient electrocatalysts for the hydrogen evolution reaction

et al. 2022

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“…This is put down to the interaction between metallic Ti and V in TiVC, the electron clouds of Ti and V are transferred to the intermediate C, which improves the bonding ability of chemical bonds, thereby enhancing the catalytic activity of TiVC during the electron transfer process. [55,56] The N 2 adsorption-desorption isotherm of the material in Figure S4 (Supporting Information) shows that the specific surface area of TVGA is 44.45 m 2 g −1 , and the pore size distribution proves that TVGA is a mesoporous material. In contrast to TiVC (specific surface area of 5.29 m 2 g −1 ), TVGA has a larger specific surface area, manifesting that more active sites can be provided during the catalytic reaction, thereby improving the catalytic performance.…”

Section: Resultsmentioning

confidence: 99%

Toward an Understanding of Bimetallic MXene Solid‐Solution in Binder‐Free Electrocatalyst Cathode for Advanced Li–CO₂ Batteries

Zhao

Yang

Deng

et al. 2022

Adv Funct Materials

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Li–CO2 batteries have received extensive attention due to their high energy storage capacity and utilization of CO2 resources. Herein, bimetallic MXene solid‐solution TiVC is prepared and combined with highly conductive graphene for the construction of binder‐free electrocatalyst cathodes for Li–CO2 batteries. Considering the electronic structure, the unique synergy effect between Ti and V in TiVC enhances the interfacial chemical bonding ability, facilitates sufficient exposure of active sites and promotes catalytic interfacial structural reformation, thereby promoting the reversible formation and decomposition of the chemically inert discharge product Li2CO3. Meanwhile, the abundant pores and excellent electron transfer ability of graphene aerogel are conducive to the gas diffusion and ion transport, thus reducing the mass and charge transfer resistance. As a result, the assembled Li–CO2 battery presents an excellent discharge capacity of 27 880 mAh g−1 with a stable discharge plateau of 2.77 V and low overpotential of 1.5 V based on the TiVC‐graphene aerogel electrocatalytic cathode. The density functional theory calculations are further performed to deeply reveal the unique electronic structure information between Ti and V in the solid‐solution TiVC. This study provides inspiration for exploring more bimetallic MXene solid solutions and developing advanced cathode catalysts for flexible Li–CO2 batteries.

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“…The formation mechanism of the 3D fold morphology can be found in the previous report. 22,34 004), ( 006), (008), (0010), and (106) reflections. 35 After etching and intercalation, several diffraction peaks of V 4 AlC 3 near 38°disappeared.…”

Section: Resultsmentioning

confidence: 99%

Poly(o-phenylenediamine)-Decorated V₄C₃T_x MXene/Poly(o-phenylenediamine) Blends as Electrode Materials to Boost Storage Capacity for Supercapacitors and Lithium-Ion Batteries

Cheng

Yang

et al. 2023

ACS Appl. Nano Mater.

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Two-dimensional transition-metal carbides/nitrides (MXenes), as pseudocapacitor materials, have attracted extensive attention in the field of energy storage in recent years. However, the MXene surface is prone to oxidation and their layered structure is easy to stack, which limit their practical application. Here, we propose a facile and cost-effective strategy to fabricate a blend of poly(o-phenylenediamine) (PoPD)decorated vanadium carbide MXene (N−V 4 C 3 T x ) and PoPD as electrode materials to boost the storage capacity for supercapacitors and lithium-ion batteries. N−V 4 C 3 T x nanosheets and PoPD nanoparticles were prepared by in situ oxidant-free polymerization and redox methods, respectively. The electrochemical performance of the blend shows that the introduction of PoPD nanoparticles can effectively improve the specific capacitance of N− V 4 C 3 T x . The N−V 4 C 3 T x /PoPD electrode exhibits excellent specific capacitance of up to 676.5 F g −1 at 1 A g −1 for supercapacitor application. Compared with the V 4 C 3 T x -based device (276.3 F g −1 ), the capacitance reaches up to 2.48 times enhancement. In addition, the N−V 4 C 3 T x /PoPD electrode also presents satisfactory cyclic stability, and the retention rate can remain unchanged after 10,000 cycles. As the electrode material for lithium-ion batteries, it also shows a high capacity of 561.2 mA h g −1 at 0.1 A g −1 , excellent rate performance, and cyclic stability. Our work broadens the application of MXenes and conductive polymers as electrode materials in the field of energy storage and offers a simple and effective strategy to improve the capacity and stability of the pristine MXene.

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Stable TiVCTx/poly-o-phenylenediamine composites with three-dimensional tremella-like architecture for supercapacitor and Li-ion battery applications

Cited by 33 publications

References 49 publications

2D TiVCT_x layered nanosheets grown on nickel foam as highly efficient electrocatalysts for the hydrogen evolution reaction

2D TiVCT_x layered nanosheets grown on nickel foam as highly efficient electrocatalysts for the hydrogen evolution reaction

Toward an Understanding of Bimetallic MXene Solid‐Solution in Binder‐Free Electrocatalyst Cathode for Advanced Li–CO₂ Batteries

Poly(o-phenylenediamine)-Decorated V₄C₃T_x MXene/Poly(o-phenylenediamine) Blends as Electrode Materials to Boost Storage Capacity for Supercapacitors and Lithium-Ion Batteries

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Stable TiVCTx/poly-o-phenylenediamine composites with three-dimensional tremella-like architecture for supercapacitor and Li-ion battery applications

Cited by 33 publications

References 49 publications

2D TiVCTx layered nanosheets grown on nickel foam as highly efficient electrocatalysts for the hydrogen evolution reaction

2D TiVCTx layered nanosheets grown on nickel foam as highly efficient electrocatalysts for the hydrogen evolution reaction

Toward an Understanding of Bimetallic MXene Solid‐Solution in Binder‐Free Electrocatalyst Cathode for Advanced Li–CO2 Batteries

Poly(o-phenylenediamine)-Decorated V4C3Tx MXene/Poly(o-phenylenediamine) Blends as Electrode Materials to Boost Storage Capacity for Supercapacitors and Lithium-Ion Batteries

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Resources

About

2D TiVCT_x layered nanosheets grown on nickel foam as highly efficient electrocatalysts for the hydrogen evolution reaction

2D TiVCT_x layered nanosheets grown on nickel foam as highly efficient electrocatalysts for the hydrogen evolution reaction

Toward an Understanding of Bimetallic MXene Solid‐Solution in Binder‐Free Electrocatalyst Cathode for Advanced Li–CO₂ Batteries

Poly(o-phenylenediamine)-Decorated V₄C₃T_x MXene/Poly(o-phenylenediamine) Blends as Electrode Materials to Boost Storage Capacity for Supercapacitors and Lithium-Ion Batteries