Achieving High‐Performance Metal Phosphide Anode for Potassium Ion Batteries via Concentrated Electrolyte Chemistry

Yang, Fuhua; Hao, Junnan; Long, Jun; Liu, Sailin; Zheng, Tian; Lie, Wilford; Chen, Jun; Guo, Zaiping

doi:10.1002/aenm.202003346

Cited by 73 publications

(64 citation statements)

References 43 publications

(45 reference statements)

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“…[8] However, PIBs are suffering from poor rate capability and short cycling lifespan due to the larger radius of K + (1.38 Å) than that of Li + (0.76 Å), [15,16] which causes the collapse of solid electrolyte interphase (SEI) and active materials, exacerbating side reactions and extensive volumetric change during potassium insertion/extraction. [17][18][19][20] Hence, it is significant to seek alternative PIBs anode materials with favorable structural stability.Recently, great efforts have been made in the development of high-performance PIBs anode materials, such as sulfides, [18,19,21] phosphides, [22] carbonaceous, [23] and metallic materials, [24,25] etc. Among them, carbon-based materials have become one of the most promising PIBs anode due to their high conductivity, low potential platform, and structural stability in charging/ discharging process.…”

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confidence: 99%

“…Recently, great efforts have been made in the development of high-performance PIBs anode materials, such as sulfides, [18,19,21] phosphides, [22] carbonaceous, [23] and metallic materials, [24,25] etc. Among them, carbon-based materials have become one of the most promising PIBs anode due to their high conductivity, low potential platform, and structural stability in charging/ discharging process.…”

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confidence: 99%

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Nitrogen and Fluorine Dual Doping of Soft Carbon Nanofibers as Advanced Anode for Potassium Ion Batteries

Zhong

Dai²,

Liú³

et al. 2021

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Potassium-ion batteries (PIBs) are recognized as promising alternatives for lithium-ion batteries as the next-generation energy storage systems. However, the larger radius of K + hinders the K + insertion into the conventional carbon electrode and results in sluggish potassiation kinetics and poor cycling stability. Here, nitrogen and fluorine dual doping of soft carbon nanotubes (NFSC) anode are synthesized in one pot, achieving extraordinary electrochemical performance for PIBs. It is demonstrated that NFSC with a doping dose of 5.6 at% nitrogen and 1.3 at% fluorine together exhibits the highest reversible capacity of 238 mAh g −1 at 0.2 A g −1 and cycling stability of 186 mAh g −1 after 1000 cycles at 1 A g −1 . The extraordinary electrochemical performance can be attributed to the hollow structure, expanded interlayer distance, nitrogen and fluorine dual doping, and the binding ability of abundant defect sites. Moreover, density functional theory shows that the extra fluorine modification can dramatically enhance the conventional nitrogen doping effect and reduces the formation energy which makes a great contribution to the improvement of electrical conduction and K-ions insert. This work may promote the development of low-cost and sustainable carbonbased materials for PIBs and other advanced energy storage devices.The ORCID identification number(s) for the author(s) of this article can be found under https://doi.org/10.1002/smll.202101576. energy storage devices have been developed as alternatives to LIBs and received widespread attentions, such as magnesium-ion batteries, calcium-ion batteries, aluminum-ion batteries, sodium-ion batteries, and potassium-ion batteries (PIBs). [5,[8][9][10][11] Among them, PIBs are valued to be an ideal candidate due to the abundant reservation and strong interaction with conventional carbon layers to intercalate potassium species. [8,[12][13][14] Moreover, PIBs have more negative standard potential versus standard hydrogen electrode (−2.93V) than that of LIBs (−3.04V) as well as promising formation ability of potassium-graphite intercalation. [8] However, PIBs are suffering from poor rate capability and short cycling lifespan due to the larger radius of K + (1.38 Å) than that of Li + (0.76 Å), [15,16] which causes the collapse of solid electrolyte interphase (SEI) and active materials, exacerbating side reactions and extensive volumetric change during potassium insertion/extraction. [17][18][19][20] Hence, it is significant to seek alternative PIBs anode materials with favorable structural stability.Recently, great efforts have been made in the development of high-performance PIBs anode materials, such as sulfides, [18,19,21] phosphides, [22] carbonaceous, [23] and metallic materials, [24,25] etc. Among them, carbon-based materials have become one of the most promising PIBs anode due to their high conductivity, low potential platform, and structural stability in charging/ discharging process. [23,[26][27][28] In addition, due to its expanded

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confidence: 99%

mentioning

confidence: 99%

Nitrogen and Fluorine Dual Doping of Soft Carbon Nanofibers as Advanced Anode for Potassium Ion Batteries

Zhong

Dai²,

Liú³

et al. 2021

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“…A doable strategy is provided to allay the remission of MPs to develop high-energy-density PIBs. 232 The electrochemical exhibition of these electrodes has been investigated by electrochemical impedance spectroscopy, cyclic voltammetry, and polarization measurement. The primary outcomes show that the porous Ni-Cr-Fe electrode has relatively good and lasting stability and excellent catalytic activity for HER in seawater.…”

Section: Other Batteriesmentioning

confidence: 99%

Metal–organic framework‐derived phosphide nanomaterials for electrochemical applications

et al. 2022

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Because of features, such as adjustable structures, high porosity, and high crystallinity, metal–organic frameworks (MOFs) deservedly have received considerable attention. Nevertheless, there is still room for improvements in the electrical conductivity and chemical stability of some MOFs, because of which they cannot be utilized as electrode materials. Fortunately, MOF derivatives have received widespread attention in recent years, especially phosphide materials, which are widely used in practical applications because of their outstanding conductivity, excellent specific surface area, and standout charge mobility. In this review, the latest developments of MOF‐derived phosphides in electrocatalysis related to energy, including the excellent performance in terms of electrochemical energy storage and ingenious strategies, and diversified synthetic approaches have been emphasized and summarized. Additionally, the arduous task and feasible proposals of MOF‐derived phosphides are also discussed.

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“…graphite [78]), conversion-type (e.g. metal oxides [79], chalcogenides [80], and phosphides [81]), and alloying-type (e.g. Bi [82] and Sb [83]).…”

Section: Interphases In Composite Anodesmentioning

confidence: 99%

Interphases in the electrodes of potassium ion batteries

et al. 2022

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Rechargeable potassium-ion batteries (PIBs) are of great interest as a sustainable, environmentally friendly, and cost-effective energy storage technology. The electrochemical performance of a PIB is closely related to the reaction kinetics of active materials, ionic/electronic transport, and the structural/electrochemical stability of cell components. Alongside the great effort devoted in discovering and optimising electrode materials, recent research unambiguously demonstrates the decisive role of the interphases that interconnect adjacent components in a PIB. Knowledge of interphases is currently less comprehensive and satisfactory compared to that of electrode materials, and therefore, understanding the interphases is crucial to facilitate electrode materials design and advance battery performance. The present review aims to summarise the critical interphases that dominate the overall battery performance of PIBs, which includes solid-electrolyte interphase (SEI), cathode-electrolyte interphase (CEI), and solid-solid interphases in composite electrodes, via exploring their formation principles, chemical compositions, and determination of reaction kinetics. State-of-the-art design strategies of robust interphases are discussed and analysed. Finally, perspectives are given to stimulate new ideas and open questions to further the understanding of interphases and the development of PIBs.

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Achieving High‐Performance Metal Phosphide Anode for Potassium Ion Batteries via Concentrated Electrolyte Chemistry

Cited by 73 publications

References 43 publications

Nitrogen and Fluorine Dual Doping of Soft Carbon Nanofibers as Advanced Anode for Potassium Ion Batteries

Nitrogen and Fluorine Dual Doping of Soft Carbon Nanofibers as Advanced Anode for Potassium Ion Batteries

Metal–organic framework‐derived phosphide nanomaterials for electrochemical applications

Interphases in the electrodes of potassium ion batteries

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