MXene/graphene hybrid fibers for high performance flexible supercapacitors

Yang, Qingsong; Xu, Zhen; Fang, Bo; Huang, Tieqi; Cai, Shengying; Chen, Hao; Liu, Yingjun; Karthikeyan, G.; Gao, Weiwei; Gao, Chao

doi:10.1039/c7ta07999k

Cited by 398 publications

(285 citation statements)

References 41 publications

Supporting

Mentioning

265

Contrasting

Order By: Relevance

“…Comparably, the MXene/CNT fiber‐based device also exhibits a rectangular‐shaped CV behavior with a significantly enhanced current density (Figure b), which is attributed to the pseudocapacitive contribution from MXene nanosheets. The rate capability of the MXene/CNT fiber‐based device is remarkable with capacitance retention of 72% at 100 mV s −1 (Figure S10, Supporting Information), which is superior to that of MXene/rGO fiber‐, MXene/Ag/nylon fiber‐, MXene/stainless steel wire‐based devices, the capacitance retention of which is normally less than 50% within scan rate range from 5 to 100 mV s −1 . This performance is also comparable to that of MXene/graphene hybrid film measured in aqueous electrolyte .…”

mentioning

confidence: 81%

A Solid‐State Fibriform Supercapacitor Boosted by Host–Guest Hybridization between the Carbon Nanotube Scaffold and MXene Nanosheets

Gong

Chen

et al. 2018

Small

187

106

View full text Add to dashboard Cite

Fiber-shaped supercapacitors with improved specific capacitance and high rate capability are a promising candidate as power supply for smart textiles. However, the synergistic interaction between conductive filaments and active nanomaterials remains a crucial challenge, especially when hydrothermal or electrochemical deposition is used to produce a core (fiber)-shell (active materials) fibrous structure. On the other hand, although 2D pseudocapacitive materials, e.g., Ti C T (MXene), have demonstrated high volumetric capacitance, high electrical conductivity, and hydrophilic characteristics, MXene-based electrodes normally suffer from poor rate capability owing to the sheet restacking especially when the loading level is high and solid-state gel is used as electrolyte. Herein, by hosting MXene nanosheets (Ti C T ) in the corridor of a scrolled carbon nanotube (CNT) scaffold, a MXene/CNT fiber with helical structure is successfully fabricated. These features offer open spaces for rapid ion diffusion and guarantee fast electron transport. The solid-state supercapacitor based on such hybrid fibers with gel electrolyte coating exhibits a volumetric capacitance of 22.7 F cm at 0.1 A cm with capacitance retention of 84% at current density of 1.0 A cm (19.1 F cm ), improved volumetric energy density of 2.55 mWh cm at the power density of 45.9 mW cm , and excellent mechanical robustness.

show abstract

mentioning

confidence: 81%

A Solid‐State Fibriform Supercapacitor Boosted by Host–Guest Hybridization between the Carbon Nanotube Scaffold and MXene Nanosheets

Gong

Chen

et al. 2018

Small

187

106

View full text Add to dashboard Cite

show abstract

“…PPy, with its intrinsic highly redox active behavior and good conductivity, has been employed in composites with MXene to enhance the performance of supercapacitors . Nevertheless, the performance is far from optimal owing to lack of good synthesis methods.…”

Section: Introductionmentioning

confidence: 99%

Intertwined Titanium Carbide MXene within a 3 D Tangled Polypyrrole Nanowires Matrix for Enhanced Supercapacitor Performances

Tran

Hong

et al. 2018

Chemistry A European J

View full text Add to dashboard Cite

The exploration of the rational design and synthesis of unique and robust architectured electrodes for the high capacitance, rate capability, and stability of supercapacitors is crucial to the future of energy storage technology. Herein, an in situ synthesis of multilayered titanium carbide MXene tightly caging within a 3 D conducting tangled polypyrrole (PPy) nanowire (NW) network is proposed as an effective strategy to prevent the aggregation of MXene, profoundly enhancing the electrochemical performance of the supercapacitor. Owing to the beneficial effects of an ideal 3 D interconnected porous structure and high electrical conductivity, the obtained electrode exhibits fast charge and ion transport kinetics as well as full usage of active material. As expected, the 3 D Ti3C2Tx@PPY NW exhibits a specific capacitance five times higher than that of pristine MXene (610 F g−1), a good rate capability up to a current density of 25 A g−1, and excellent stability with 100 % retention after 14 000 cycles at 4 A g−1, outperforming the known state‐of‐the‐art MXene‐based supercapacitor. Our work provides a facile method for enhancing the performance of MXene‐based energy storage devices.

show abstract

“…[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%

“…Furthermore, rGO films and Ti 3 C 2 T x films are flexible, so the Ti 3 C 2 T x /rGO flake can be even more flexible. [142] In MXene/CNT composites, not only do the CNTs have similar performance with the rGO, but also the CNTs can form a 3D electric network to link near and far MXene layers. [141,142] MXene/rGO composites have had their structure optimized by specific technologies to exhibit better performance.…”

Section: Wwwadvmatinterfacesdementioning

confidence: 99%

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

Yang

Bao

Jaumaux

et al. 2019

Adv Materials Inter

257

142

View full text Add to dashboard Cite

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.

show abstract

MXene/graphene hybrid fibers for high performance flexible supercapacitors

Abstract: Continuous MXene/graphene fibers are fabricatedviawet-spinning assembly strategy, from which fiber-constructed supercapacitors are obtained that exhibit both high capacitance and flexibility.

Cited by 398 publications

References 41 publications

A Solid‐State Fibriform Supercapacitor Boosted by Host–Guest Hybridization between the Carbon Nanotube Scaffold and MXene Nanosheets

A Solid‐State Fibriform Supercapacitor Boosted by Host–Guest Hybridization between the Carbon Nanotube Scaffold and MXene Nanosheets

Intertwined Titanium Carbide MXene within a 3 D Tangled Polypyrrole Nanowires Matrix for Enhanced Supercapacitor Performances

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

Contact Info

Product

Resources

About