Advanced cobalt-free cathode materials for sodium-ion batteries

Chu, Shiyong; Guo, Shaohua; Zhou, Haoshen

doi:10.1039/d1cs00442e

Cited by 125 publications

(92 citation statements)

References 308 publications

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“…[ 8 ] However, a key bottleneck in commercializing SIBs is to identify competitive cathodes with long lifespan, negligible volume change, cost‐effectiveness, as well as high capacity. [ 9–11 ]…”

Section: Introductionmentioning

confidence: 99%

“…[8] However, a key bottleneck in commercializing SIBs is to identify competitive cathodes with long lifespan, negligible volume change, cost-effectiveness, as well as high capacity. [9][10][11] Until now, several families of cathode materials have been developed for use such as layered oxides, [12,13] Prussian blues analogs, [14] and polyanion oxides. [15][16][17] Among these, sodium superionic conductor (NASICON)-structured Na x MeMe′(PO 4 ) 3 (Me/Me′ refers to transition metals) are capable of satisfying the above requirements in terms of high ionic conductivity (3D open frameworks), limited volume change (strong Sodium super-ionic conductor (NASICON)-structured phosphates are emerging as rising stars as cathodes for sodium-ion batteries.…”

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confidence: 99%

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Rationally Designed Sodium Chromium Vanadium Phosphate Cathodes with Multi‐Electron Reaction for Fast‐Charging Sodium‐Ion Batteries

Zhang

et al. 2022

Advanced Energy Materials

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Lithium-ion batteries (LIBs) have changed modern life-enabling mobile communication and electric vehicles. They are the most widespread energy storage devices but they are not totally suitable for sustainable development due to the limited lithium resources in countries often with underlying political disputes. [3][4][5] As alternative candidates, sodium-ion batteries (SIBs) have drawn increasing attention by both academic and industrial communities on account of the high abundance of sodium resources. [6,7] Of great promise are inexpensive, high-energy, long-lifespan, and fast-charging SIBs in order to improve on LIBs. [8] However, a key bottleneck in commercializing SIBs is to identify competitive cathodes with long lifespan, negligible volume change, cost-effectiveness, as well as high capacity. [9][10][11] Until now, several families of cathode materials have been developed for use such as layered oxides, [12,13] Prussian blues analogs, [14] and polyanion oxides. [15][16][17] Among these, sodium superionic conductor (NASICON)-structured Na x MeMe′(PO 4 ) 3 (Me/Me′ refers to transition metals) are capable of satisfying the above requirements in terms of high ionic conductivity (3D open frameworks), limited volume change (strong Sodium super-ionic conductor (NASICON)-structured phosphates are emerging as rising stars as cathodes for sodium-ion batteries. However, they usually suffer from a relatively low capacity due to the limited activated redox couples and low intrinsic electronic conductivity. Herein, a reduced graphene oxide supported NASICON Na 3 Cr 0.5 V 1.5 (PO 4 ) 3 cathode (VC/C-G) is designed, which displays ultrafast (up to 50 C) and ultrastable (1 000 cycles at 20 C) Na + storage properties. The VC/C-G can reach a high energy density of ≈470 W h kg −1 at 0.2 C with a specific capacity of 176 mAh g −1 (equivalent to the theoretical value); this corresponds to a three-electron transfer reaction based on fully activated V 5+ /V 4+ , V 4+ /V 3+ , V 3+ /V 2+ couples. In situ X-ray diffraction (XRD) results disclose a combination of solid-solution reaction and biphasic reaction mechanisms upon cycling. Density functional theory calculations reveal a narrow forbiddenband gap of 1.41 eV and a low Na + diffusion energy barrier of 0.194 eV. Furthermore, VC/C-G shows excellent fast-charging performance by only taking ≈11 min to reach 80% state of charge. The work provides a widely applicable strategy for realizing multi-electron cathode design for high-performance SIBs.

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Section: Introductionmentioning

confidence: 99%

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confidence: 99%

Rationally Designed Sodium Chromium Vanadium Phosphate Cathodes with Multi‐Electron Reaction for Fast‐Charging Sodium‐Ion Batteries

Zhang

et al. 2022

Advanced Energy Materials

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“…The first generation LIBs is based on LiCoO 2 cathode and graphite anode. [7] As the cobalt is earth deficient, and the oxide cathode was detected to be unstable at highly charged states, the replacement of LiCoO 2 cathode has been pursuit intensively. Two options have emerged; one is based on oxides in which the Co position is replaced by mixed cations, such as Li(Ni 1-x-y Co x Mn y )O 2 , Li(Ni 1-x-y Co x Al y )O 2 , Li-rich oxides, and so on.…”

Section: Introductionmentioning

confidence: 99%

A Vanadium‐Based Fluoroxide Cathode Material for Lithium‐Ion Storage with High Energy Density

et al. 2022

Advanced Sustainable Systems

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High‐performance lithium‐ion batteries (LIBs) are required for the rising energy storage demand, while their development depends mainly on cathode materials. Vanadium‐based compounds are considered to be promising due to the feasibility of multielectron reactions arising from the rich valence states of vanadium (+2 to +5). Herein, for the first time the electrochemical properties of a vanadium‐based fluoroxide, β‐KVOF3, as a cathode for LIBs, are reported. After optimization, a reversible capacity as high as 274 mAh g−1, a stable 300 cycles lifetime, and an energy density comparable to LiFePO4 (650 vs 550 Wh kg−1) are achieved. Experiments and simulation study of reaction mechanism illustrate that such performance originates from the reversible V3+/V5+ redox reaction, high structural stability of β‐KVOF3, and the pseudocapacitive process during charging and discharging. This study reveals that β‐KVOF3 is a promising cathode for Li‐ion storage and provides a new design idea for developing high‐performance LIBs cathode materials.

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“…Therefore, sodium-ion batteries (SIBs) sharing an analogous "rocking-chair" mechanism to LIBs emerge as promising alternatives in large-scale ESSs due to the omnipresent availability of Na resources 11,12 . Over the past decade, numerous efforts have been dedicated to developing high-performance cathode materials for SIBs, which mainly include layered oxides and polyanionic compounds 13,14 . Layered oxides (Na x MeO 2 , Me = Mg, Fe, Cu, Ni, Mn, etc.)…”

Section: Introductionmentioning

confidence: 99%

Fluorine anion modification of high-voltage Mn-rich phosphate cathodes for high-power and long-lasting sodium-ion batteries

Zhang

et al. 2022

Preprint

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High-voltage cathodes with high power and stable cyclability are needed for future high-performance sodium-ion batteries. However, the low electronic conductivity and poor capacity retention impede the development of Mn-rich phosphate cathodes. Here, a light-weight F doping strategy is reported to modify high-voltage Na4MnCr(PO4)3 cathodes. The light-weight F dopant could decrease the energy gap to 0.22 eV from 1.52 eV and strengthen the adjacent chemical bonding around Mn as confirmed by density functional theory calculations, which ensure the boosted electronic conductivity and suppress Mn dissolution. The combination of in-situ and ex-situ techniques determine that the F dopant has no influence on the Na+ storage mechanisms. As a result, an outstanding rate performance up to 40 C and an improved cycling stability (1000 cycles at 20 C) are thus achieved (best reported performances until now). This work presents an unusual and widely available light-weight anion doping strategy for high-performance polyanionic cathodes.

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Advanced cobalt-free cathode materials for sodium-ion batteries

Abstract: This review summarizes and discusses the advances, challenges, and construction strategies of high-performance cobalt-free cathodes for advanced SIBs.

Cited by 125 publications

References 308 publications

Rationally Designed Sodium Chromium Vanadium Phosphate Cathodes with Multi‐Electron Reaction for Fast‐Charging Sodium‐Ion Batteries

Rationally Designed Sodium Chromium Vanadium Phosphate Cathodes with Multi‐Electron Reaction for Fast‐Charging Sodium‐Ion Batteries

A Vanadium‐Based Fluoroxide Cathode Material for Lithium‐Ion Storage with High Energy Density

Fluorine anion modification of high-voltage Mn-rich phosphate cathodes for high-power and long-lasting sodium-ion batteries

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