Self‐Assembly of 0D–2D Heterostructure Electrocatalyst from MOF and MXene for Boosted Lithium Polysulfide Conversion Reaction

Ye, Zhengqing; Jiang, Ying; Li, Li; Wu, Feng; Chen, Renjie

doi:10.1002/adma.202101204

Cited by 218 publications

(171 citation statements)

References 47 publications

(42 reference statements)

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“…[ 4,5 ] The slow sulfur conversion reactions severely limit the electrochemical performances of Li−S batteries especially under high sulfur loading and lean electrolyte operation. [ 6,7 ]…”

Section: Introductionmentioning

confidence: 99%

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mentioning

confidence: 99%

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Synergetic Anion Vacancies and Dense Heterointerfaces into Bimetal Chalcogenide Nanosheet Arrays for Boosting Electrocatalysis Sulfur Conversion

Jiang

et al. 2022

Advanced Materials

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104

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The slow sulfur conversion reactions severely limit the electrochemical performances of Li−S batteries especially under high sulfur loading and lean electrolyte operation. [6,7] An electrocatalytic approach to boost sulfur conversion reaction in Li−S chemistry has recently been proposed as an effective strategy to overcome these limitations. [8][9][10][11][12] Transition metal chalcogenides (TMCs) are recognized to be effective sulfur electrocatalysts because of their abundance, environment friendliness, and unique electrochemical properties. [13][14][15][16][17] Among them, metal sulfides arouse particular interest because of their high activity, and thermodynamically stable structures. [18] However, TMCs are still suffered from insufficient active sites, inferior durability, and weak conductivity. The notable enhancement of catalytic activity for sulfur redox reaction can be achieved by regulating the morphology and internal crystal structure of TMCs. As for morphology control, in situ growing 2D TMC nanosheet arrays with abundant electroactive sites on conductive substrates could provide efficient pathways for electron/ion transport during the sulfur conversion process. [19] Moreover, it was demonstrated that bimetal chalcogenide hetero-catalysts exhibited higher activity than the single-component counterparts. The formed heterointerfaces in bimetal chalcogenide can increase the number of catalytically active sites and provide favorable local coordination and electronic structures. [20,21] For example, the bimetallic chalcogenides, such as ZnS-SnS, [22] MoS 2 /Ni 3 S 2 , [23] and CoSe-ZnSe [24] enable electronic reconfiguration and improve the intrinsic activity for promoting sulfur conversion by the interior built-in electric-field (E-field) induced by phase boundaries. Although promising progress has been made, electrocatalytic activity is still unsatisfactory for a wellfunctioning Li−S battery in terms of boosting the entire sulfur conversion reaction.The introduction of anion vacancies provides another effective strategy to enhance the electrocatalytic activity of TMCs toward boosted Li−S battery upon discharging/charging process. [25][26][27] Electrons in the Se-defect can be excited into the conduction band, producing a low bandgap in the conduction band which is favorable to the sulfur conversion reaction. [28] Moreover, sulfurvacancies (S-vacancies) can regulate the electronic structure of adjacent atoms, thus reducing the decomposition energy barrier Vacancy and interface engineering are regarded as effective strategies to modulate the electronic structure and enhance the activity of metal chalcogenides. However, the practical application of metal chalcogenides in lithium− sulfur (Li−S) batteries is limited by their low conductivity, rapid decline in catalytic activity, and large volume variation during the discharging/charging process. Herein, bimetal sulfide (CoZn-S) nanosheet arrays with sulfur vacancies and dense heterointerfaces are proposed to accelerate sulfur conversion and improve the perform...

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Section: Introductionmentioning

confidence: 99%

“…

…”

mentioning

confidence: 99%

Synergetic Anion Vacancies and Dense Heterointerfaces into Bimetal Chalcogenide Nanosheet Arrays for Boosting Electrocatalysis Sulfur Conversion

Jiang

et al. 2022

Advanced Materials

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104

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“…Developing fabrication strategies of metal compounds/ MOF composite derivatives is also of great importance [71][72][73]. By compositing with proper metal compounds, MOF composite derivatives could offer more exposed active sites for polysulfides regulation and tailorable structures for sulfur loading, thus improving the sulfur utilization and enhancing sulfur loading simultaneously.…”

Section: Mof Composite Derivativesmentioning

confidence: 99%

Rational Design of MOF-Based Materials for Next-Generation Rechargeable Batteries

Jiang

et al. 2021

Nano-Micro Lett.

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174

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Metal–organic framework (MOF)-based materials with high porosity, tunable compositions, diverse structures, and versatile functionalities provide great scope for next-generation rechargeable battery applications. Herein, this review summarizes recent advances in pristine MOFs, MOF composites, MOF derivatives, and MOF composite derivatives for high-performance sodium-ion batteries, potassium-ion batteries, Zn-ion batteries, lithium–sulfur batteries, lithium–oxygen batteries, and Zn–air batteries in which the unique roles of MOFs as electrodes, separators, and even electrolyte are highlighted. Furthermore, through the discussion of MOF-based materials in each battery system, the key principles for controllable synthesis of diverse MOF-based materials and electrochemical performance improvement mechanisms are discussed in detail. Finally, the major challenges and perspectives of MOFs are also proposed for next-generation battery applications.

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“…In this regard, various methods have been applied to change the property of MOFs for OER. One is to increase the number of active sites through synthesizing nano‐level or low‐dimensional MOFs [14–16] . Huang et al.…”

Section: Introductionmentioning

confidence: 99%

“…One is to increase the number of active sites through synthesizing nano-level or low-dimensional MOFs. [14][15][16] Huang et al used bottom-up solvothermal method to synthesis 2D NiÀ Fe-MOF nanosheets with a thickness of only several atomic layers. [10] Owing to the highly exposed active sites and ultra-thin structure, the 2D MOF nanosheets exhibit excellent electrocatalytic performance.…”

Section: Introductionmentioning

confidence: 99%

Plasma‐assisted Engineering of MOF Electrocatalyst for Highly Efficient Oxygen Evolution Reaction

et al. 2022

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Metal-organic frameworks (MOFs) have been extensively investigated as promising oxygen evolution reaction (OER) electrocatalysts due to their highly ordered porous structure and abundant active sites. The reasonable engineering of the MOF materials is the key to highly efficient energy conversion technologies. Here, we present a facile Ar plasma treatment to introduce various defects in MOF nanosheets while maintaining their morphology. The generated coordinatively unsaturated metal sites with electron-rich structure are conducive to improving intrinsic catalytic activity, and the formed mesopores are beneficial to mass transport during the catalytic process. Compared with the pristine MOF nanosheets grown on nickel foam, the plasma-etched MOF nanosheets exhibits excellent OER performance with an ultralow overpotential of 213 mV at current density of 50 mA cm À 2 . This work could deepen our understanding of the structure-property relationship of the plasma-treated MOF electrocatalysts, and open up new prospects for the engineering of highly efficient MOF-based electrocatalysts.

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Self‐Assembly of 0D–2D Heterostructure Electrocatalyst from MOF and MXene for Boosted Lithium Polysulfide Conversion Reaction

Cited by 218 publications

References 47 publications

Synergetic Anion Vacancies and Dense Heterointerfaces into Bimetal Chalcogenide Nanosheet Arrays for Boosting Electrocatalysis Sulfur Conversion

Synergetic Anion Vacancies and Dense Heterointerfaces into Bimetal Chalcogenide Nanosheet Arrays for Boosting Electrocatalysis Sulfur Conversion

Rational Design of MOF-Based Materials for Next-Generation Rechargeable Batteries

Plasma‐assisted Engineering of MOF Electrocatalyst for Highly Efficient Oxygen Evolution Reaction

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