Ultrafast kinetics net electrode assembled via MoSe2/MXene heterojunction for high-performance sodium-ion batteries

Xu, Enze; Zhang, Yan; Wang, Hui; Zhu, Zhifeng; Quan, Junjie; Chang, Yajing; Li, Pengcheng; Yu, Deng‐Guang; Jiang, Yang

doi:10.1016/j.cej.2019.123839

Cited by 148 publications

(92 citation statements)

References 57 publications

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“…In principle, the diffusion coefficient ( D ) can generally be obtained in the following two ways based on the EIS results. [ 28 ] We make the following comparison based on the frequency of the low‐frequency scanning area ( ω = 10 –2 —10 Hz) during EIS test. In the first way, when ω >> 2 D / L 2 , the diffusion coefficient D can be obtained by the slope B of

sans-serif-italicZ' - sans-serif1 / \sqrt{ω}

sans-serif-italicZ'' - sans-serif1 / \sqrt{ω}

, which could be described as [ 32 ]

B = - \frac{V_{normalm}}{\sqrt{2 FAD}} \frac{normald E}{normald x}

…”

Section: Resultsmentioning

confidence: 99%

“…Currently, there are many methods to study ion deintercalation kinetics. Firstly, it is the most commonly used electrochemical testing method to measure diffusion coefficient, such as Galvanostatic intermittent titration technique (GITT), [ 28 ] potentiostaticintermittent titration technique (PITT), [ 29 ] electrochemical impedance spectroscopy (EIS), [ 30 ] cyclic voltammetry (CV). [ 31 ] Secondly, electron microscope and electrochemical probe technology are used to observe the electrode surface information, which can reflect the irreversible dynamics of electrode.…”

Section: Background and Originality Contentmentioning

confidence: 99%

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Initial Electrode Kinetics of Anion Intercalation and De‐intercalation in Nonaqueous Al‐Graphite Batteries^†

Han

Cao

et al. 2020

Chin. J. Chem.

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Graphite electrode | Anion intercalation | Al battery | Electrochemical kinetics | Diffusion Graphitic materials with intercalated sites are considered as the mostly used positive electrode materials in nonaqueous Al batteries. Unlike the small-size cations, the intercalation/de-intercalation of large-size anions into/out of graphite would induce large volume expansion and micro-structure reconfiguration, leading to unexpected coulombic efficiency in the full cells (<95% within initial several cycles). For understanding the irreversible processes induced by anion intercalation/de-intercalation (AlCl 4-), here the kinetics of first two cycles for the Al-graphite batteries have been systematically studied. To study kinetics behaviors at representative states, a combined method upon galvanostatic intermittent titration technique and electrochemical impedance spectroscopy has been carried out. The achieved diffusion coefficients of the positive electrodes assembled with different graphite sizes suggest that size effect also plays a critical role in determining the electrochemical kinetics in the mass transport in both electrolyte and graphitic layers as well as in interface reaction. The morphologies and micro-structures of the post-cycled graphite electrodes have been also experimentally studied, which also well supports the irreversible intercalation/de-intercalation behaviors in graphite electrodes. The results offer a significant platform to well understand the essential factors in tailoring coulombic efficiency from a kinetic view, which would be helpful in promoting the graphite electrodes in Al batteries.

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sans-serif-italicZ' - sans-serif1 / \sqrt{ω}

sans-serif-italicZ'' - sans-serif1 / \sqrt{ω}

, which could be described as [ 32 ]

B = - \frac{V_{normalm}}{\sqrt{2 FAD}} \frac{normald E}{normald x}

…”

Section: Resultsmentioning

confidence: 99%

Section: Background and Originality Contentmentioning

confidence: 99%

Initial Electrode Kinetics of Anion Intercalation and De‐intercalation in Nonaqueous Al‐Graphite Batteries^†

Han

Cao

et al. 2020

Chin. J. Chem.

View full text Add to dashboard Cite

show abstract

“…The interplanar spacings of 0.271 and 0.273 nm are clearly observed, which are corresponding to (200) and (002) planes of Bi 2 WO 6 , respectively, [143] while the lattice spacing of 0.271 nm is assigned to (042) plane of Nb 2 CT x (Figure 7j). [61,72] Other examples, such as 2D MXene Ti 3 C 2 T x /2D MoSe 2 nanosheet heterostructures, [144] 2D MXene Ti 3 C 2 T x /2D FePS 3 nanosheet heterostructures, [73] 2D MXene Ti 3 C 2 T x /2D n-Si nanosheet heterostructures, [145] and 2D MXene Mo 2 CT x /2D MoS 2 nanosheet heterostructures, [146] were rationally designed for exploration of superior performances of 2D MXene-based devices.…”

Section: D Mxene/2d Nanosheet Heterostructuresmentioning

confidence: 99%

Recent Advances in Functional 2D MXene‐Based Nanostructures for Next‐Generation Devices

Huang

Tang

et al. 2020

Adv Funct Materials

236

138

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Similar to graphene and black phosphorus (BP), 2D transition metal carbides and nitrides (MXenes) are of great interest in a variety of fields, such as energy storage and conversion, sensors, electromagnetic interference (EMI) shielding, and photothermal therapy due to their excellent conductivity and hydrophilicity, large specific capacitance, high photothermal effect, and superior electrochemical performance. To further broaden applicable ranges beyond their existing boundaries and fully exploit these potentials, functional 2D MXene nanostructures in recent years have been rationally designed and developed by various approaches, such as doping strategies, surface functionalization, and hybridization, for next-generation devices with the merits of low power consumption, intelligence, and high-integration chips. This review provides an overview of the synthetic routes and fundamental properties of functional 2D MXene nanostructures, including surfacemodified 2D MXenes and mixed-dimensional MXene-based heterostructures, highlights the state-of-the-art progress in the applications of functional 2D MXene nanostructures with regard to energy storage and conversion, catalysis, sensors, photodetectors, EMI shielding, degradation, and biomedical applications, and presents the challenges and perspectives in these burgeoning fields. It is hoped that this review will inspire more efforts toward fundamental research on new functional 2D MXene-based devices to satisfy the growing requirements for next-generation systems.

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“…Afterward, several literatures reported hierarchical MoSe 2 with continuously improved performances, including the cycle life. [16][17][18][19][20] Even so, most of the reported cycle life is around hundreds to one thousand, which is way behind the expectation and requirement of anode, especially for the application of SICs.…”

Section: Nano Heterostructures Relying On Their Versatile Constructiomentioning

confidence: 99%

2D Sandwiched Nano Heterostructures Endow MoSe₂/TiO₂₋_x/Graphene with High Rate and Durability for Sodium Ion Capacitor and Its Solid Electrolyte Interphase Dependent Sodiation/Desodiation Mechanism

Liu

Zhang

et al. 2020

Small

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Nano heterostructures relying on their versatile construction and the breadth of combined functionality have shown great potential in energy storage fields. Herein, 2D sandwiched MoSe2/TiO2−x/graphene nano heterostructures are designed by integrating structural and functional effects of each component, aiming to address the rate capability and cyclic stability of MoSe2 for sodium ion capacitors (SICs). These 2D nano heterostructures based on graphene platform can facilitate the interfacial electron transport, giving rise to fast reaction kinetics. Meanwhile, the 2D open structure induces a large extent of surface capacitive contribution, eventually leading to a high rate capability (415.2 mAh g−1@ 5 A g−1). An ultrathin oxygen deficient TiO2−x layer sandwiched in these nano heterostructures provides a strong chemical‐anchoring regarding the products generated during the sodiation/desodiation process, securing the entire cyclic stability. The associated sodiation/desodiation mechanism is revealed by operando and ex situ characterizations, which exhibits a strong solid electrolyte interphase (SEI) dependence. The simulations verify the dependent sodiation products and enhanced heterostructural chemical‐anchoring. Assembled SICs based on these nano heterostructures anode exhibit high initial Coulombic efficiency, energy/power densities, and long cycle life, shedding new light on the design of nano heterostructure electrodes for high performance energy storage application.

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Ultrafast kinetics net electrode assembled via MoSe2/MXene heterojunction for high-performance sodium-ion batteries

Cited by 148 publications

References 57 publications

Initial Electrode Kinetics of Anion Intercalation and De‐intercalation in Nonaqueous Al‐Graphite Batteries^†

Initial Electrode Kinetics of Anion Intercalation and De‐intercalation in Nonaqueous Al‐Graphite Batteries^†

Recent Advances in Functional 2D MXene‐Based Nanostructures for Next‐Generation Devices

2D Sandwiched Nano Heterostructures Endow MoSe₂/TiO₂₋_x/Graphene with High Rate and Durability for Sodium Ion Capacitor and Its Solid Electrolyte Interphase Dependent Sodiation/Desodiation Mechanism

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Ultrafast kinetics net electrode assembled via MoSe2/MXene heterojunction for high-performance sodium-ion batteries

Cited by 148 publications

References 57 publications

Initial Electrode Kinetics of Anion Intercalation and De‐intercalation in Nonaqueous Al‐Graphite Batteries†

Initial Electrode Kinetics of Anion Intercalation and De‐intercalation in Nonaqueous Al‐Graphite Batteries†

Recent Advances in Functional 2D MXene‐Based Nanostructures for Next‐Generation Devices

2D Sandwiched Nano Heterostructures Endow MoSe2/TiO2−x/Graphene with High Rate and Durability for Sodium Ion Capacitor and Its Solid Electrolyte Interphase Dependent Sodiation/Desodiation Mechanism

Contact Info

Product

Resources

About

Initial Electrode Kinetics of Anion Intercalation and De‐intercalation in Nonaqueous Al‐Graphite Batteries^†

Initial Electrode Kinetics of Anion Intercalation and De‐intercalation in Nonaqueous Al‐Graphite Batteries^†

2D Sandwiched Nano Heterostructures Endow MoSe₂/TiO₂₋_x/Graphene with High Rate and Durability for Sodium Ion Capacitor and Its Solid Electrolyte Interphase Dependent Sodiation/Desodiation Mechanism