Porous biscuit-like nanoplate FeNb11O29−x@C for lithium-ion storage and oxygen evolution

Fu, Hongliang; Lian, Yue; Bai, Yongqing; Wang, Zhifeng; Hu, Yongfeng; Zhao, Jing; Zhang, Huaihao

doi:10.1039/d2nr05020j

Cited by 4 publications

(2 citation statements)

References 48 publications

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“…[10,11,12] Theoretically, the water splitting reaction requires 1.23 V potential difference to drive it. [13] Till now, the water electrolysis is still limited by the catalyst material, such as catalyst activity, stability and environmental friendliness. [14] Therefore, the development of new catalysts with abundant active sites, fast reaction kinetics, high stability and environmental friendliness is the key to water electrolysis technology progress.…”

Section: Introductionmentioning

confidence: 99%

“…Specifically, the overall water splitting (OWS) reaction is composed of hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) [10,11,12] . Theoretically, the water splitting reaction requires 1.23 V potential difference to drive it [13] . Till now, the water electrolysis is still limited by the catalyst material, such as catalyst activity, stability and environmental friendliness [14] .…”

Section: Introductionmentioning

confidence: 99%

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Oxygen‐Deficient FeNbO_4‐x In‐Situ Growth in Honey‐Derived N‐Doping Porous Carbon for Overall Water Splitting

Fu,

Bai,

Lian

et al. 2024

ChemSusChem

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It is still a great challenge to reasonably design green, low cost, high activity and good stability catalysts for overall water splitting (OWS). Here, we introduce a novel catalyst with ferric niobate (FeNbO4) in‐situ growing in honey‐derived porous carbon of high specific surface area, and its catalytic activity is further enhanced by micro‐regulation (oxygen vacancy and N‐doping). From the experimental results and density functional theory (DFT) calculations, the oxygen vacancy in catalyst FeNbO4‐x@NC regulates the local charge density of active site, thus increasing conductivity and optimizing hydrogen/oxygen species adsorption energy. FeNbO4 in‐situ grows within N‐doping honey‐derived porous carbon, which can enhance active specific surface area exposure, strengthen gaseous substances escape rate, and accelerate electrons/ions transfer and electrolytes diffusion. Moreover, in‐situ Raman also confirms O‐species generation in oxygen evolution reaction (OER). As a result, the catalyst FeNbO4‐x@NC shows good electrochemical performance in OER, HER and OWS.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Oxygen‐Deficient FeNbO_4‐x In‐Situ Growth in Honey‐Derived N‐Doping Porous Carbon for Overall Water Splitting

Fu,

Bai,

Lian

et al. 2024

ChemSusChem

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N‐Doping Fe‐C@Nb₂CT_x MXenes with High Stability and Strong Activity for Sodium‐Ion Storage and Overall Water Splitting

Fu,

Lian,

et al. 2024

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The development of highly stable and strongly active electrode materials for sodium‐ion batteries (SIBs) and overall water splitting (OWS) is critical in sustainable energy storage and conversion systems. Here, a new electrode material N‐Fe‐C@Nb2CTx is introduced, with a layered sandwich structure consisting of N‐doping Fe‐MOF derived‐nanorods (Fe‐C) and Nb2CTx MXenes. Specifically, Nb2CTx obtained by etching Nb2AlC with HF acid is used as the main body to construct the layered sandwich structure with Fe‐C as the filler. Benefiting from this structure, Fe‐MOF grows in situ within Nb2CTx, which restrains MXenes aggregation and stacking and also alleviates the bulk effect of sodium‐ion embedding/de‐embedding, thus improving its stability. Again, the more exposed active sites from the layered sandwich structure and N‐doping introduction ensure high reactivity as electrode materials. In addition, Fe‐C nanorods strengthen the linkage between the Nb2CTx layers and N‐doping enhances the ion/electron transport rate, thereby boosting the effective mass transfer and electrical conductivity. Density functional theory (DFT) calculations show that Fe‐C and N‐doping help increase the density of states (DOS) and material electrical conductivity. Meanwhile, the generated oxygen species (*OH and *O) in OER are captured by in situ FT‐IR test. As a result, the N‐Fe‐C@Nb2CTx electrochemical test displays good electrochemical performance in SIBs and OWS.

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FeNb11O29 and related niobate anodes for fast-charging lithium-ion batteries: a review

Bini

2024

J Solid State Electrochem

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The main request to be fulfilled for the wide distribution of electric vehicles is the availability of fast-charging lithium-ion batteries (LIBs). However, fast charging accelerates the degradation of a battery, particularly at ambient temperature, and the main responsible one is the anode compartment. The research is indeed devoted to developing new anode materials for LIBs with outstanding performances at high rates. FeNb11O29 (FNO), a double shear phase, also known as a Wadsley–Roth phase, with an intrinsic pseudocapacitance, was recently proposed as anode in LIBs, thanks to its high theoretical capacity (400 mAh g−1), high operating voltage (~ 1.6 V vs Li+/Li) and an amazing structural stability. In this review, after the discussion of strengths and weaknesses of FNO, the structural features of both its polymorphic forms, with a particular focus on the niobium and iron neighbourhoods, will be described. Then, the working mechanism and the structure-electrochemistry relationships will be treated, with an in-depth analysis of the pseudo-capacitive behaviour, i.e., the key to understand its electrochemical performances. The strategies to mitigate its main drawbacks, i.e., the poor electronic conductivity and the limited lithium diffusion, will be also dealt with. In the final paragraph, the electrochemical performances of some other analogues niobates will be briefly described.

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Porous biscuit-like nanoplate FeNb₁₁O_29−x@C for lithium-ion storage and oxygen evolution

Abstract: The development of efficient and stable electrode materials for lithium-ion batteries (LIBs) and oxygen evolution reaction (OER) is critical for clean and sustainable energy storage and conversion. In this work,...

Cited by 4 publications

References 48 publications

Oxygen‐Deficient FeNbO_4‐x In‐Situ Growth in Honey‐Derived N‐Doping Porous Carbon for Overall Water Splitting

Oxygen‐Deficient FeNbO_4‐x In‐Situ Growth in Honey‐Derived N‐Doping Porous Carbon for Overall Water Splitting

N‐Doping Fe‐C@Nb₂CT_x MXenes with High Stability and Strong Activity for Sodium‐Ion Storage and Overall Water Splitting

FeNb11O29 and related niobate anodes for fast-charging lithium-ion batteries: a review

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Porous biscuit-like nanoplate FeNb11O29−x@C for lithium-ion storage and oxygen evolution

Abstract: The development of efficient and stable electrode materials for lithium-ion batteries (LIBs) and oxygen evolution reaction (OER) is critical for clean and sustainable energy storage and conversion. In this work,...

Cited by 4 publications

References 48 publications

Oxygen‐Deficient FeNbO4‐x In‐Situ Growth in Honey‐Derived N‐Doping Porous Carbon for Overall Water Splitting

Oxygen‐Deficient FeNbO4‐x In‐Situ Growth in Honey‐Derived N‐Doping Porous Carbon for Overall Water Splitting

N‐Doping Fe‐C@Nb2CTx MXenes with High Stability and Strong Activity for Sodium‐Ion Storage and Overall Water Splitting

FeNb11O29 and related niobate anodes for fast-charging lithium-ion batteries: a review

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Product

Resources

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Porous biscuit-like nanoplate FeNb₁₁O_29−x@C for lithium-ion storage and oxygen evolution

Oxygen‐Deficient FeNbO_4‐x In‐Situ Growth in Honey‐Derived N‐Doping Porous Carbon for Overall Water Splitting

Oxygen‐Deficient FeNbO_4‐x In‐Situ Growth in Honey‐Derived N‐Doping Porous Carbon for Overall Water Splitting

N‐Doping Fe‐C@Nb₂CT_x MXenes with High Stability and Strong Activity for Sodium‐Ion Storage and Overall Water Splitting