Spatial Isolation-Inspired Ultrafine CoSe<sub>2</sub> for High-Energy Aluminum Batteries with Improved Rate Cyclability

Long, Yao; Ju, Shunlong; Xu, Tongwen; Yu, Xuebin

doi:10.1021/acsnano.1c04895

Cited by 59 publications

(43 citation statements)

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“…[264,265] Rizwan et al revealed the physical parameter changes related to the doping effect of MXene. [62] After Nb-doped MXene, the c-lattice parameter is enhanced (from 19.2 to 23.4 Å), the bandgap is reduced [263] Copyright 2021, American Chemical Society. b) Rate capability of different Ag content; Comparison of c) charge density distribution function of states (PDOS) of N-Ti 3 C 2 (OH) x and pristine Ti 3 C 2 (OH) x .…”

Section: Supercapacitormentioning

confidence: 99%

“…developed a N‐doped porous carbon nanosheet (NPCS)/MXene hybrid material using a spatial isolation strategy. [ 263 ] The synergistic effect of Co adsorption affinity of different N‐doping sites and MXenes is demonstrated, demonstrating a high‐energy Al‐ion battery (212 mAh g –1 after 500 cycles at 1 A g –1 ) ( Figure a). [ 263 ]…”

Section: Applications Of Heteroatom Doped Mxenes Materialsmentioning

confidence: 99%

“…[ 263 ] The synergistic effect of Co adsorption affinity of different N‐doping sites and MXenes is demonstrated, demonstrating a high‐energy Al‐ion battery (212 mAh g –1 after 500 cycles at 1 A g –1 ) ( Figure a). [ 263 ]…”

Section: Applications Of Heteroatom Doped Mxenes Materialsmentioning

confidence: 99%

“…Reproduced with permission. [ 263 ] Copyright 2021, American Chemical Society. b) Rate capability of different Ag content; Comparison of c) charge density distribution function of states (PDOS) of N‐Ti 3 C 2 (OH) x and pristine Ti 3 C 2 (OH) x .…”

Section: Applications Of Heteroatom Doped Mxenes Materialsmentioning

confidence: 99%

mentioning

confidence: 99%

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Element‐Doped Mxenes: Mechanism, Synthesis, and Applications

Wang

Sun

et al. 2022

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Heteroatom doping can endow MXenes with various new or improved electromagnetic, physicochemical, optical, and structural properties. This greatly extends the arsenal of MXenes materials and their potential for a spectrum of applications. This article comprehensively and critically discusses the syntheses, properties, and emerging applications of the growing family of heteroatom‐doped MXenes materials. First, the doping strategies, synthesis methods, and theoretical simulations of high‐performance MXenes materials are summarized. In order to achieve high‐performance MXenes materials, the mechanism of atomic element doping from three aspects of lattice optimization, functional substitution, and interface modification is analyzed and summarized, aiming to provide clues for developing new and controllable synthetic routes. The mechanisms underlying their advantageous uses for energy storage, catalysis, sensors, environmental purification and biomedicine are highlighted. Finally, future opportunities and challenges for the study and application of multifunctional high‐performance MXenes are presented. This work could open up new prospects for the development of high‐performance MXenes.

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Section: Supercapacitormentioning

confidence: 99%

Section: Applications Of Heteroatom Doped Mxenes Materialsmentioning

confidence: 99%

Section: Applications Of Heteroatom Doped Mxenes Materialsmentioning

confidence: 99%

Section: Applications Of Heteroatom Doped Mxenes Materialsmentioning

confidence: 99%

mentioning

confidence: 99%

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Element‐Doped Mxenes: Mechanism, Synthesis, and Applications

Wang

Sun

et al. 2022

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Functional MXene‐Based Materials for Next‐Generation Rechargeable Batteries

et al. 2022

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fuels), such as excessively high temperatures, heavy downpours, severe floods, and droughts. As a response to the climate change, a global coalition for carbon neutrality is committed to be built by 2050 to maintain the sustainability of the global development. An imminent transition of the energy structure from traditional fossil fuels to the renewable energy sources, such as wind, solar, and tide is of great urgency. Due to the intermittent nature of these resources, energy-storage devices, especially the electrochemical energy-storage technologies, are of great significance in ensuring the stability and quality of the energy output. Lithium-ion batteries (LIBs) have been dominating the energy-storage market since its first commercialization in the 1990s. [1] They are currently widely applied in consumable electronics, electric vehicles, and grid-scale energy storage. [2] Yet more concerns have been raised regarding the scarcity and price of the lithium resources in recent years. Therefore, alternative battery technologies based on other metal ions beyond Li ions have been extensively explored. [3] However, finding suitable electrode materials for these batteries to achieve comparative performance to the LIBs remains a challenging task since the charge-carrier metal ions possess much larger ionic radius and stronger interaction with the host materials owing to their multivalent nature. MXenesare seen as an exceptional candidate to reshape the future of energy with their viable surface chemistry, ultrathin 2D structure, and excellent electronic conductivity. The extensive research efforts bring about rapid expansion of the MXene families with enriched functionalities, which significantly boost performance of the existing energy-storage devices. In this review, the strategies that are developed to functionalize the MXene-based materials, including tailoring their microstructure by ions/molecules/polymers-initiated interaction or self-assembly, surface/interface engineering with dopants or functional groups, constructing heterostructures from MXenes with various materials, and transforming them into a series of derivatives inheriting the merits of the MXene precursors are highlighted. Their applications in emerging battery technologies are demonstrated and discussed. With delicate functionalization and structural engineering, MXene-based electrode materials exhibit improved specific capacity and rate capability, and their presence further suppresses and even eliminates dendrite formation on the metal anodes, which lengthens the lifespan of the rechargeable batteries. Meanwhile, MXenes serve as additives for electrolytes, separators, and current collectors. Finally, some future directions worth of exploration to address the remaining challenging issues of MXene-based materials and achieve the nextgeneration high-power and low-cost rechargeable batteries are proposed.The ORCID identification number(s) for the author(s) of this article can be found under https://doi.org/10.1002/adma.202204988.

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Modulation of Phase Transition in Cobalt Selenide with Simultaneous Construction of Heterojunctions for Highly‐Efficient Oxygen Electrocatalysis in Zinc–Air Battery

Xu,

Wang,

Huo

et al. 2023

Advanced Materials

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Phase‐transformation of cobalt selenide (CoSe2) can effectively modulate its intrinsic electrocatalytic activity. However, enhancing electroconductivity and catalytic activity/stability of CoSe2 still remains challenging. Heterostructure engineering may be feasible to optimize interfacial property to promote the kinetics of oxygen electrocatalysis on CoSe2‐based catalyst. Herein, a heterostructure consisting of CoSe2 and cobalt nitride (CoN) embedded in a hollow carbon‐cage is designed via a simultaneous phase/interface engineering strategy. Notably, phase transition of orthorhombic‐CoSe2 to cubic‐CoSe2 accompanied by in‐situ CoN formation is realized to build the c‐CoSe2/CoN heterointerface, which exhibits excellent/highly‐stable activities for oxygen reduction/evolution reactions (ORR/OER). Notably, heterostructure can modulate local coordination environment and increase Co‐Se/N bond lengths. Theoretical calculations show that Co‐site (c‐CoSe2) with electronic state near Fermi energy level is main active sites for ORR/OER. Energetical tailoring of d‐orbital electronic structure of Co atom of c‐CoSe2 in heterostructure by in‐situ CoN incorporation lowers thermodynamic barriers for ORR/OER. Bader charge analyses reveal that the internal electron transfer from c‐CoSe2 to CoN affords high ORR/OER activities. Attractively, a zinc‐air battery with c‐CoSe2‐CoN cathode displays excellent cycling stability (250 h) and charge/discharge voltage loss (0.953/0.96 V). It highlights that heterointerface engineering provides an option for modulating bifunctional activity of metal selenides with controlled phase‐transformation.This article is protected by copyright. All rights reserved

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Spatial Isolation-Inspired Ultrafine CoSe₂ for High-Energy Aluminum Batteries with Improved Rate Cyclability

Cited by 59 publications

References 56 publications

Element‐Doped Mxenes: Mechanism, Synthesis, and Applications

Element‐Doped Mxenes: Mechanism, Synthesis, and Applications

Functional MXene‐Based Materials for Next‐Generation Rechargeable Batteries

Modulation of Phase Transition in Cobalt Selenide with Simultaneous Construction of Heterojunctions for Highly‐Efficient Oxygen Electrocatalysis in Zinc–Air Battery

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Spatial Isolation-Inspired Ultrafine CoSe2 for High-Energy Aluminum Batteries with Improved Rate Cyclability

Cited by 59 publications

References 56 publications

Element‐Doped Mxenes: Mechanism, Synthesis, and Applications

Element‐Doped Mxenes: Mechanism, Synthesis, and Applications

Functional MXene‐Based Materials for Next‐Generation Rechargeable Batteries

Modulation of Phase Transition in Cobalt Selenide with Simultaneous Construction of Heterojunctions for Highly‐Efficient Oxygen Electrocatalysis in Zinc–Air Battery

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Spatial Isolation-Inspired Ultrafine CoSe₂ for High-Energy Aluminum Batteries with Improved Rate Cyclability