Ni0.85Se hexagonal nanosheets as an advanced conversion cathode for Mg secondary batteries

Chen, Dong; Shen, Jingwei; Li, Xue; Cao, Shun‐an; Li, Ting; Luo, Wei; Xu, Fei

doi:10.1016/j.jechem.2020.01.018

Cited by 43 publications

(33 citation statements)

References 52 publications

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“…Furthermore, NCNTs can reduce the volume change of electrode materials during the cycling process and accelerate the electrochemical reaction kinetics. [ 52 , 53 , 54 , 55 , 56 , 57 ] Figure 3e shows the rate performance of the reported cathode materials under different current densities. NiS 2 has an excellent multiplicative property compared to other materials, especially at low current densities.…”

Section: Resultsmentioning

confidence: 99%

In Situ Anchoring Anion‐Rich and Multi‐Cavity NiS₂ Nanoparticles on NCNTs for Advanced Magnesium‐Ion Batteries

Wei

et al. 2022

Advanced Science

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Magnesium (Mg)‐ion batteries with low cost and good safety characteristics has attracted a great deal of attention recently. However, the high polarity and the slow diffusion of Mg2+ in the cathode material limit the development of practical Mg cathode materials. In this paper, an anion‐rich electrode material, NiS2, and its composite with Ni‐based carbon nanotubes (NiS2/NCNTs) are explored as the cathode materials for Mg‐ion batteries. These NiS2/NCNTs with excellent Mg2+ storage property is synthesized by a simple in situ growth of NiS2 nanoparticles on NCNTs. NiS2 with both a large regular cavity structure and abundant sulfur‐sulfur (SS) bonds with high electronegativity can provide a large number of active sites and unobstructed transport paths for the insertion–disinsertion of Mg2+. With the aid of 3D NCNTs skeleton as the transport channel of the electron, the NiS2/NCNTs exhibit a high capacity of 244.5 mAh g−1 at 50 mA g−1 and an outstanding rate performance (94.7 mAh g−1 at 1000 mA g−1). It achieves capacitance retention of 58% after 2000 cycles at 200 mA g−1. Through theoretical density functional theory (DFT) calculations and a series of systematic ex situ characterizations, the magnesiation/demagnesiation mechanisms of NiS2 and NiS2/NCNTs and are elucidated for fundamental understanding.

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Section: Resultsmentioning

confidence: 99%

In Situ Anchoring Anion‐Rich and Multi‐Cavity NiS₂ Nanoparticles on NCNTs for Advanced Magnesium‐Ion Batteries

Wei

et al. 2022

Advanced Science

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“…[53] In addition, the conversion cathode exhibits large voltage hysteresis observed between discharge and charge, which results in low energy efficiency. [53,54] The metal chalcogenides that have been experimentally attempted as conversion cathode for Mg batteries are CuS, [14,17,18,[23][24][25][26]34,[55][56][57][58] Ag 2 S and Ag 2 Se, [15,19,59] NiCo 2 Se 4 , [28] Cu 2−x Se, [13] CuSe, [60] Ni 0.85 Se, [61] CuS 1−x Se x , [16] CoS, [62] FeS 2, [63] Sb 2 Se 3 , [20] Bi 2 Se 3 , [20] CoSe 2 , [21] and Ni 0.75 Fe 0.25 Se 2.…”

Section: Types and Structures Of Metal Chalcogenide Cathodesmentioning

confidence: 99%

“…The magnesiation-demagnesiation mechanism that follows is via the reversible conversion reaction between Co 9 S 8 and Co. [62] A conversion-type mechanism was also demonstrated for metal selenides, such as Ag 2 Se, Bi 2 Se 3 , Sb 2 Se 3 , CoSe 2 , and Ni 0.85 Se, where MgSe is the discharge product along with the extruded metal. [20,21,59,61] Ni 3 Se 4 , on the other hand, was found to function as an insertion-type cathode due to its 3D framework that has two possible Mg 2+ storage sites. [12] Meanwhile, VS 4 , with its 1D chain-like structure, works as an intercalation-type cathode in a manner similar to the TMDs.…”

Section: Other Metal Chalcogenidesmentioning

confidence: 99%

“…Other metal chalcogenides that have been explored as nanostructured conversion cathodes are those based on Ni (Ni 0.85 Se, Ni 0.75 Fe 0.25 Se 2 ), [22,61] Co (NiCo 2 Se 4 , CoSe 2 , CoS), [21,28,62,99] Ag (Ag 2 S, Ag 2 Se), [15,19,59] and Bi (Bi 2 Se 3 ) [20] (Figure 9). Thus far, most of these cathode materials have exhibited capacities that are way below their theoretical capacities (see Table S2, Supporting Information), which indicates that low utilization remains a major challenge that needs to be overcome.…”

Section: Other Metal Chalcogenidesmentioning

confidence: 99%

“…The minimum reversible capacity corresponds to the maximum current density in aqua, and vice versa in red. Data was extracted from ref [13][14][15][16][17][18][19][20][21][22][23][24]26,28,[33][34][35]55,57,[59][60][61][62][99][100][101]…”

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Designing Nanostructured Metal Chalcogenides as Cathode Materials for Rechargeable Magnesium Batteries

Regulacio

Nguyen

Horia

et al. 2021

Small

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Rechargeable magnesium batteries (RMBs) are regarded as promising candidates for beyond‐lithium‐ion batteries owing to their high energy density. Moreover, as Mg metal is earth‐abundant and has low propensity for dendritic growth, RMBs have the advantages of being more affordable and safer than the currently used lithium‐ion batteries. However, the commercial viability of RMBs has been negatively impacted by slow diffusion kinetics in most cathode materials due to the high charge density and strongly polarizing nature of the Mg2+ ion. Nanostructuring of potential cathode materials such as metal chalcogenides offers an effective means of addressing these challenges by providing larger surface area and shorter migration routes. In this article, a review of recent research on the design of metal chalcogenide nanostructures for RMBs’ cathode materials is provided. The different types and structures of metal chalcogenide cathodes are discussed, and the synthetic strategies through which nanostructuring of these materials can be achieved are described. An organized summary of their electrochemical performance is also presented, along with an analysis of the current challenges and future directions. Although particular focus is placed on RMBs, many of the nanostructuring concepts that are discussed here can be carried forward to other next‐generation energy storage systems.

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Recent Advances and Prospects of Chalcogenide Cathodes for Rechargeable Magnesium Batteries

Liu,

Qu,

et al. 2024

Adv Funct Materials

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Rechargeable magnesium batteries (RMBs) have garnered considerable interest from researchers and industries owing to their abundant resources, cost‐effectiveness, impressive energy density, and safety features, positioning them as a compelling technology for sustainable energy. Chalcogenides, with their high electrochemical activity and low charge density, facilitate the diffusion and migration of Mg2+. “Soft” anionic lattices, such as S or Se, weaken the Coulombic attraction between the crystal structure and Mg2+, thereby promoting the accelerated diffusion and reversible intercalation of Mg2+. Consequently, they are highly regarded as promising cathode materials for RMBs. However, their real‐world implementation is hindered by challenges including low conductivity, formidable ion diffusion barriers, and insufficient cyclic stability. In this study, chalcogenides are categorized into intercalation‐ and conversion‐types based on the Mg2+ storage mechanism, providing a comprehensive examination and taxonomy of various modification approaches aimed at enhancing the electrochemical performance of chalcogenides. These approaches include intercalation engineering, phase engineering, defect engineering, doping effects, and nanostructure engineering. Furthermore, specific modification strategies for certain chalcogenide cathode materials are summarized and discussed. Finally, the key points of optimization strategies for chalcogenide cathode materials are summarized, along with the proposed future breakthrough directions.

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Ni0.85Se hexagonal nanosheets as an advanced conversion cathode for Mg secondary batteries

Cited by 43 publications

References 52 publications

In Situ Anchoring Anion‐Rich and Multi‐Cavity NiS₂ Nanoparticles on NCNTs for Advanced Magnesium‐Ion Batteries

In Situ Anchoring Anion‐Rich and Multi‐Cavity NiS₂ Nanoparticles on NCNTs for Advanced Magnesium‐Ion Batteries

Designing Nanostructured Metal Chalcogenides as Cathode Materials for Rechargeable Magnesium Batteries

Recent Advances and Prospects of Chalcogenide Cathodes for Rechargeable Magnesium Batteries

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Ni0.85Se hexagonal nanosheets as an advanced conversion cathode for Mg secondary batteries

Cited by 43 publications

References 52 publications

In Situ Anchoring Anion‐Rich and Multi‐Cavity NiS2 Nanoparticles on NCNTs for Advanced Magnesium‐Ion Batteries

In Situ Anchoring Anion‐Rich and Multi‐Cavity NiS2 Nanoparticles on NCNTs for Advanced Magnesium‐Ion Batteries

Designing Nanostructured Metal Chalcogenides as Cathode Materials for Rechargeable Magnesium Batteries

Recent Advances and Prospects of Chalcogenide Cathodes for Rechargeable Magnesium Batteries

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In Situ Anchoring Anion‐Rich and Multi‐Cavity NiS₂ Nanoparticles on NCNTs for Advanced Magnesium‐Ion Batteries

In Situ Anchoring Anion‐Rich and Multi‐Cavity NiS₂ Nanoparticles on NCNTs for Advanced Magnesium‐Ion Batteries