Few-layered Ti3C2Tx MXenes coupled with Fe2O3 nanorod arrays grown on carbon cloth as anodes for flexible asymmetric supercapacitors

Li, Fēi; Liu, Yilin; Wang, Gui‐Gen; Zhang, Huayu; Zhang, Bin; Li, Guizhong; Wu, Zhipeng; Dang, Le‐Yang; Han, Jiecai

doi:10.1039/c9ta08144e

Cited by 100 publications

(25 citation statements)

References 47 publications

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“…Therefore, it is very important to improve the areal capacity by solving the problems between areal loading and conductivity. The simpliest way is to grow active material directly on conductive substrate (nickel foam, carbon cloth, copper foam, etc) to serve as an integrated electrode . As their high theoretical capacity and controllable layered structures, layered double hydroxides (LDHs) are chosen as one kind of promising battery‐type active materials to grow for high capacity .…”

Section: Introductionmentioning

confidence: 99%

2‐nm‐Thick NiCo LDH@NiSe Single‐Crystal Nanorods Grown on Ni Foam as Integrated Electrode with Enhanced Areal Capacity for Supercapacitors

Zhai

et al. 2020

Batteries & Supercaps

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It remains a great challenge to simultaneously guarantee the conductivity and high areal loading of active materials for integrated electrode of supercapacitors. Herein, we designed a hierarchical structure with cores of NiSe single‐crystal nanorods and sheaths of 2‐nm‐thick NiCo thin sheets grown on nickel foam (NiCo LDH@NiSe/NF) as integrated electrode. It reaches a high areal capacity of 1131 μAh cm−2 at a current density of 5 mA cm−2, which is 2.2 times of NiSe/NF (522 μAh cm−2) and 6.0 times of NiCo LDH/NF (189 μAh cm−2), superior to most reported integrated electrodes. The enhanced areal capacity can be ascribed to the high active material loading of 6.5 mg cm−2 (twice more than other reported values) and considerable conductivity of single‐crystal NiSe nanorods of 2630 S cm−1. The fabricated hierarchical integrated electrode of NiCo LDH@NiSe/NF assembled with activated carbon shows a maximum energy density of 0.454 mWh cm−2 and a maximum power density of 80 mW cm−2. This work presents supports of single‐crystal nanorods for thin LDH sheets to fabricate high‐density hierarchical structure for integrated electrode, which improves the conductivity and structural stability of active materials especially the LDHs, resulting in excellent electrochemical performance. It offers a promising approach to engineer and fabricate advanced supercapacitors with enhanced areal capacity.

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Section: Introductionmentioning

confidence: 99%

2‐nm‐Thick NiCo LDH@NiSe Single‐Crystal Nanorods Grown on Ni Foam as Integrated Electrode with Enhanced Areal Capacity for Supercapacitors

Zhai

et al. 2020

Batteries & Supercaps

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“…The enhanced capacitance, rate capability and long cycling performance benefit from the improvement electrical conductivity after coating branch-like NiO. The high specific capacity and superior long-life cycle performance are much larger than those in previous works on Fe 2 O 3 /CC-based composites or nanostructured Fe 2 O 3 (Jiao et al, 2014;Hu et al, 2015;Lu et al, 2015;Raut and Sankapal, 2016;Zheng et al, 2016;Zhang et al, 2017;Yang F. et al, 2018;Li F. et al, 2019).…”

Section: Resultsmentioning

confidence: 88%

Three-Dimensional Core-Branch α-Fe2O3@NiO/Carbon Cloth Heterostructured Electrodes for Flexible Supercapacitors

Zhang

Wang

et al. 2020

Front. Chem.

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A convenient and scalable hydrothermal method was developed for the fabrication of the core-branch Fe 2 O 3 @NiO nanorods arrays directly grown on flexible carbon cloth (denoted as Fe 2 O 3 @NiO/CC). Such a unique architecture was applied as an electrode of the supercapacitors. As a result, the Fe 2 O 3 @NiO/CC exhibited a high areal capacitance ∼800 mF cm −2 at 10 mA cm −2 , which was about 10 times increase with respect to Fe 2 O 3 nanorods array grown on carbon cloth (Fe 2 O 3 /CC). The Fe 2 O 3 @NiO/CC also had the long life cycle (96.8 % capacitance retention after 16,000 cycles) and remarkable rate capability (44.0 % capacitance loss at a very large current density of 100 mA cm −2). The superior performance of the Fe 2 O 3 @NiO/CC should be ascribed to the reduction of the contact resistance and the free-standing structure of the flexible electrode. This study provides a novel strategy to construct high-performance flexible electrode materials with unique core-branch structure by incorporating two different pseudocapacitive materials.

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“…To further highlight the energy storage values, the energy densities under different power densities were calculated for comparison with recently reported literature (Figure 4d). Our maximum energy density reaches 19.0 mWh cm À 3 at a power density of 309 mW cm À 3 , which is one of the biggest levels compared with previously reported FESCs (MXene/PEDOT:PSS of 16.6 mWh cm À 3 , [44] MXene/rGO of 13.03 mWh cm À 3 , [38] RuO 2 @MXene of 13.5 mWh cm À 3 , [52] MXene of 10.61 mWh cm À 3 , [41] Graphene/PANI of 8.8 mWh cm À 3 , [53] Graphene/CNTs of 6.3 mWh cm À 3 , [22] MXene/TAEA of 5.1 mWh cm À 3 , [54] MXene/CNT of 2.55 mWh cm À 3 , [49] MnO 2 / /MXene@Fe 2 O 3 of 1.61 mWh cm À 3 [55] (Table S3)).…”

Section: Methodsmentioning

confidence: 99%

Microfluidic Fabrication of Hierarchical‐Ordered ZIF‐L(Zn)@Ti₃C₂T_x Core–Sheath Fibers for High‐Performance Asymmetric Supercapacitors

Sun

Zhu

et al. 2021

Angewandte Chemie

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We report hierarchical-ordered ZIFÀ L(Zn)-@Ti 3 C 2 T x MXene core-sheath fibers, in which a ZIFÀ L(Zn) nanowall array sheath is grown vertically on an anisotropic Ti 3 C 2 T x core by TiÀ OÀ Zn/TiÀ FÀ Zn chemical bonds. Through highly efficient microfluidic assembly and microchannel reactions, ZIFÀ L(Zn)@Ti 3 C 2 T x exhibits well-developed micro-/mesoporosity, ordered ionic pathways, fast interfacial electron conduction and large-scale fabrication, significantly boosting charges dynamic transport and intercalation. The resultant ZIFÀ L(Zn)@Ti 3 C 2 T x fiber presents large capacitance (1700 F cm À 3 ) and outstanding rate performance in a 1 M H 2 SO 4 electrolyte. Additionally, ZIFÀ L-(Zn)@Ti 3 C 2 T x fiber-based solid-state asymmetric supercapacitors deliver high energy density (19.0 mWh cm À 3 ), excellent capacitance (854 F cm À 3 ), large deformable/wearable capabilities and long-time cyclic stability (20 000 cycles), which realize natural sunlight-induced self-powered applications to drive water level/earthquake alarm devices.

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Few-layered Ti₃C₂T_x MXenes coupled with Fe₂O₃ nanorod arrays grown on carbon cloth as anodes for flexible asymmetric supercapacitors

Abstract: Few-layered Ti3C2Tx MXene wrapped Fe2O3 nanorod arrays grown on carbon cloth, is a promising anode for high-performance flexible asymmetric supercapacitor.

Cited by 100 publications

References 47 publications

2‐nm‐Thick NiCo LDH@NiSe Single‐Crystal Nanorods Grown on Ni Foam as Integrated Electrode with Enhanced Areal Capacity for Supercapacitors

2‐nm‐Thick NiCo LDH@NiSe Single‐Crystal Nanorods Grown on Ni Foam as Integrated Electrode with Enhanced Areal Capacity for Supercapacitors

Three-Dimensional Core-Branch α-Fe2O3@NiO/Carbon Cloth Heterostructured Electrodes for Flexible Supercapacitors

Microfluidic Fabrication of Hierarchical‐Ordered ZIF‐L(Zn)@Ti₃C₂T_x Core–Sheath Fibers for High‐Performance Asymmetric Supercapacitors

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Few-layered Ti3C2Tx MXenes coupled with Fe2O3 nanorod arrays grown on carbon cloth as anodes for flexible asymmetric supercapacitors

Abstract: Few-layered Ti3C2Tx MXene wrapped Fe2O3 nanorod arrays grown on carbon cloth, is a promising anode for high-performance flexible asymmetric supercapacitor.

Cited by 100 publications

References 47 publications

2‐nm‐Thick NiCo LDH@NiSe Single‐Crystal Nanorods Grown on Ni Foam as Integrated Electrode with Enhanced Areal Capacity for Supercapacitors

2‐nm‐Thick NiCo LDH@NiSe Single‐Crystal Nanorods Grown on Ni Foam as Integrated Electrode with Enhanced Areal Capacity for Supercapacitors

Three-Dimensional Core-Branch α-Fe2O3@NiO/Carbon Cloth Heterostructured Electrodes for Flexible Supercapacitors

Microfluidic Fabrication of Hierarchical‐Ordered ZIF‐L(Zn)@Ti3C2Tx Core–Sheath Fibers for High‐Performance Asymmetric Supercapacitors

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Few-layered Ti₃C₂T_x MXenes coupled with Fe₂O₃ nanorod arrays grown on carbon cloth as anodes for flexible asymmetric supercapacitors

Microfluidic Fabrication of Hierarchical‐Ordered ZIF‐L(Zn)@Ti₃C₂T_x Core–Sheath Fibers for High‐Performance Asymmetric Supercapacitors