A high-performance supercapacitor electrode based on freestanding N-doped Ti3C2Tx film

Zhang, Tianze; Xiao, Junpeng; Li, Lü; Zhao, Jiabao; Gao, Hong

doi:10.1016/j.ceramint.2020.05.247

Cited by 33 publications

(23 citation statements)

References 39 publications

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“…[180] Similarly, hydrazine hydrate (N 2 H 4 •H 2 O) was applied as the nitrogen source to perform nitrogen doping on Ti 3 C 2 T x by following a hydrothermal process at 75°C for 15 hours. [183] As shown in Figure 16 (d), wrinkles were observed on the surface of MXenes after incorporating nitrogen due to the distortion of crystal lattice over the nanosheets, and the distribution of nitrogen was uniform. [181,184] Compared to the undoped Ti 3 C 2 T x sample, the nitrogen-doped MXene electrode for the supercapacitor displayed a promoted gravimetric specific capacitance (340 versus 234 F g À 1 at 2 mV s À 1 in 1 M H 2 SO 4 ).…”

Section: Doping By Nitrogenmentioning

confidence: 94%

“…[181,184] Compared to the undoped Ti 3 C 2 T x sample, the nitrogen-doped MXene electrode for the supercapacitor displayed a promoted gravimetric specific capacitance (340 versus 234 F g À 1 at 2 mV s À 1 in 1 M H 2 SO 4 ). [183] The excellent performance was attributed to a series of reasons: the improved electrical conductivity due to the electron donating nature of nitrogen, the promoted surface redox electrochemical reaction owing to the enhanced surface absorption of cations and the suppressed oxidation of MXenes related to the reductive environment offered by N 2 H 4 •H 2 O .…”

Section: Doping By Nitrogenmentioning

confidence: 99%

mentioning

confidence: 99%

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Strategies for Fabricating High‐Performance Electrochemical Energy‐Storage Devices by MXenes

Zhou

et al. 2021

ChemElectroChem

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Since 2011, MXenes, a family of two-dimensional transitionmetal carbides, nitrides, and carbonitrides, have been investigated as electrodes, additives, separators, and hosts for energy-storage devices (ESDs, including supercapacitors and metal-ion batteries) due to their unique properties. This report focuses on the present technical issues in the field of energy storage and the corresponding solutions involving MXenes. It begins with a series of synthesis approaches (including topdown and bottom-up strategies) with a brief description of the structural properties, covering crystal lattice, structural defects, and surface chemistries. In addition, the impact of surface functional groups, composition of transition metals temperature and external pressure on the electrical properties of MXenes is discussed. Then, current issues of ESDs are listed with several MXene-based solutions, including intercalation, modification of the terminating groups, chemical doping, vacancy engineering and the design of nanocomposites. Finally, the challenges in MXene-based ESDs are summarised with some potential research directions in the future.

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Section: Doping By Nitrogenmentioning

confidence: 94%

Section: Doping By Nitrogenmentioning

confidence: 99%

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Strategies for Fabricating High‐Performance Electrochemical Energy‐Storage Devices by MXenes

Zhou

et al. 2021

ChemElectroChem

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“…7 As the important part of the supercapacitor, the electrode material determines the performance of the supercapacitor. 8 At present, metal oxides and hydroxides, 9 porous carbon materials, 10 and conductive polymers 11 are mainly used electrode materials for supercapacitors. 12 Porous carbon materials can store energy based on the electric double layer capacitance mechanism.…”

Section: Introductionmentioning

confidence: 99%

“…According to different charge storage mechanisms, supercapacitors can be divided into electric double‐layer capacitor and pseudocapacitor 7 . As the important part of the supercapacitor, the electrode material determines the performance of the supercapacitor 8 . At present, metal oxides and hydroxides, 9 porous carbon materials, 10 and conductive polymers 11 are mainly used electrode materials for supercapacitors 12 .…”

Section: Introductionmentioning

confidence: 99%

Solvothermal synthesis of triphenylamine‐based covalent organic framework nanofibers with excellent cycle stability for supercapacitor electrodes

Xiong

Liu

Wang

et al. 2021

J of Applied Polymer Sci

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Covalent organic framework (COF) is a new class of porous materials used in energy storage devices. By solvothermal method, the triphenylamine-based covalent organic framework was synthesized using Schiff base coupling reaction between tris(4-aminophenyl) amine (TAPA) and tris(4-formylphenyl) amine. The regular pore structure of TPA-COFs not only exposes more active sites of triphenylamine structure to electrolyte solution during the chargedischarge process, but also accelerates the transport of ions in the active layer.At the same time, the π-electron conjugated system and the interlayer π-π stacking effect effectively promote the conduct of electrons in the two-dimensional and three-dimensional directions of COFs materials, which improves the electrochemical performance of the materials. TPA-COFs show a higher specific capacitance of 263.1 F/g at 0.1 A/g. At the same time, TPA-COFs materials exhibit a high specific surface area of 398.59 m 2 /g. After 5000 cycles of charge-discharge, the capacitance retention rate of TPA-COFs is 111%, showing excellent cycle stability.

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Recent Advancements and Perspectives of Biodegradable Polymers for Supercapacitors

Shi

2023

Adv Funct Materials

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Supercapacitors (SCs) have demonstrated great potential for integration into future wearable and implantable electronics, yet the insufficient environmental adaption and biosafety limit their further development. To this regard, application of biodegradable polymers is considered as an ideal solution strategy for the environmentally sound disposal of SCs. The biodegradable polymers with satisfactory degradability and excellent biocompatibility demonstrate an irreplaceable role in the future development of SCs and provide an ideal solution strategy for its environmentally sound disposal. In this review, the research progress and challenges of biodegradable polymers in the field of SCs are discussed and analyzed. First, the classification of existing biodegradable polymers and their typical structure, properties, and preparation processes are elucidated. Subsequently, the main applications of biodegradable polymers in different components of SCs, including electrodes, electrolytes, substrate, and encapsulation materials, are summarized. In addition, the research progress of biodegradable polymer-based SCs in terms of preparation strategies and modification methods is summarized, and the key role of biodegradable polymers in the development process of green SCs is deeply discussed. Finally, the future perspectives and challenges faced by the biodegradable polymer-based SCs are briefly proposed.

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A high-performance supercapacitor electrode based on freestanding N-doped Ti3C2Tx film

Cited by 33 publications

References 39 publications

Strategies for Fabricating High‐Performance Electrochemical Energy‐Storage Devices by MXenes

Strategies for Fabricating High‐Performance Electrochemical Energy‐Storage Devices by MXenes

Solvothermal synthesis of triphenylamine‐based covalent organic framework nanofibers with excellent cycle stability for supercapacitor electrodes

Recent Advancements and Perspectives of Biodegradable Polymers for Supercapacitors

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