Bimetallic sulfide CoNi2S4 hollow nanospheres as a high-performance cathode material for Mg-ion batteries

Fei, Yating; Wang, Haobo; Xu, Yifan; Song, Lili; Man, Yuehua; Du, Yichen; Bao, Jianchun; Zhou, Xiaosi

doi:10.1016/j.cej.2023.148255

Cited by 7 publications

(1 citation statement)

References 49 publications

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“…Among them, transition metal sulfides have been widely applied for electrochemically storing various kinds of ions, such as Li + , Na + , K + , Mg 2+ , Cu 2+ , Zn 2+ , Al 3+ . 12–24 The copper sulfide family, which is a vital representative of sulfides, have garnered significant interest due to their myriad benefits, including cost-effectiveness, non-toxicity, and the abundant availability of both the elements of copper and sulfur. 25–27 Particularly, copper sulfides show excellent sodium-ion storage properties; 28–30 and furthermore, nonstoichiometric copper sulfide exhibits superior performances for the intrinsic vacancy defects and lower sodium-ion diffusion energy barrier.…”

Section: Introductionmentioning

confidence: 99%

Room-temperature synthesis of nonstoichiometric copper sulfide (Cu_2−xS) for sodium ion storage

Tang,

Pan,

Zhao

et al. 2024

Inorg. Chem. Front.

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Section: Introductionmentioning

confidence: 99%

Room-temperature synthesis of nonstoichiometric copper sulfide (Cu_2−xS) for sodium ion storage

Tang,

Pan,

Zhao

et al. 2024

Inorg. Chem. Front.

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Organic Heterophase Composites Induced Sulfur Vacancies and Internal Electric Field Enhancement for Advanced Magnesium Storage of Copper Sulfide Cathodes

He,

Cheng,

Sun

et al. 2024

Adv Funct Materials

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Rechargeable magnesium‐ion batteries (MIBs) hold significant promise for safe and efficient large‐scale energy storage, but the lack of high‐performance cathodes hinders their development for practical applications. In this work, a series of nanocomposites consisting of π‐conjugated perylene‐3,4,9,10‐tetracarboxylic dianhydride annealed at 450 °C and copper sulfide (CuSP) are synthesized solvothermally to explore their utility as a host for Mg2+ storage in MIBs. The carbonyl organics in the hybrid materials modify the predominant CuS phase, expanding interlayer spacing and enriching sulfur vacancies through modifications of the internal electric field. This synergistic interaction enhances magnesium storage performance and accelerates reaction kinetics. Using chlorine‐free Mg[B(hfip)4]2/DME electrolytes, the CuSP91 cathode containing an appropriate organic content displays a remarkably high reversible capacity of 285 mAh g−1 at 50 mA g−1, and demonstrates a stable capacity of 220 mAh g−1 at 100 mA g−1, surpassing pure CuS cathode in terms of shorter activation time. The CuSP91 cathode maintains a discharge capacity of 55 mAh g−1 over 1000 cycles at 500 mA g−1. A co‐redox mechanism is revealed through in/ex situ investigations and analyses. Overall, this research contributes valuable insights targeting the development of advanced organic–inorganic hybrid composite cathode materials in next‐generation energy storage systems.

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The Out‐of‐Plane C─S Bonds Boosting Reversible Redox in Copper Sulfide Cathodes for Ultradurable Magnesium Battery

Su,

Wang,

Chen

et al. 2024

Adv Funct Materials

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As a typical conversion‐type cathode material, CuS has shown great potential in the field of rechargeable magnesium batteries (RMBs) due to its excellent energy density, stable voltage platforms, and low cost. However, the poor phase conversion reversibility in CuS cathodes has resulted in low Coulombic efficiency and short cycling life, impeding its further development. Herein, an abundance of CS heterointerfaces is meticulously crafted by the CuS nanoparticles anchored on rGO nanosheets (CuS@G). The out‐of‐plane C─S bonds effectively reduce the activation energy of sulfur atoms within Cu‐S tetrahedrons, facilitating the formation of S─S bonds in the Cu₂S crystal structure and driving the reversible phase conversion between Cu₂S and CuS during the charge/discharge process. Furthermore, a more reversible phase conversion could diminish copper ion dissolution induced by volume expansion. Consequently, the CuS@G cathode exhibits one of the most remarkable rate performances to date (160.5 mAh g−1 at 1 A g−1), retaining 64.7% of its capacity after 1000 cycles. Additionally, a durable CuS@G||Mg pouch cell is successfully assembled, delivering a high capacity of 9.5 mAh. These fundamental insights provide valuable guidance for the design of high‐performance conversion cathode materials for next‐generation RMBs.

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Bimetallic sulfide CoNi2S4 hollow nanospheres as a high-performance cathode material for Mg-ion batteries

Cited by 7 publications

References 49 publications

Room-temperature synthesis of nonstoichiometric copper sulfide (Cu_2−xS) for sodium ion storage

Room-temperature synthesis of nonstoichiometric copper sulfide (Cu_2−xS) for sodium ion storage

Organic Heterophase Composites Induced Sulfur Vacancies and Internal Electric Field Enhancement for Advanced Magnesium Storage of Copper Sulfide Cathodes

The Out‐of‐Plane C─S Bonds Boosting Reversible Redox in Copper Sulfide Cathodes for Ultradurable Magnesium Battery

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Bimetallic sulfide CoNi2S4 hollow nanospheres as a high-performance cathode material for Mg-ion batteries

Cited by 7 publications

References 49 publications

Room-temperature synthesis of nonstoichiometric copper sulfide (Cu2−xS) for sodium ion storage

Room-temperature synthesis of nonstoichiometric copper sulfide (Cu2−xS) for sodium ion storage

Organic Heterophase Composites Induced Sulfur Vacancies and Internal Electric Field Enhancement for Advanced Magnesium Storage of Copper Sulfide Cathodes

The Out‐of‐Plane C─S Bonds Boosting Reversible Redox in Copper Sulfide Cathodes for Ultradurable Magnesium Battery

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Product

Resources

About

Room-temperature synthesis of nonstoichiometric copper sulfide (Cu_2−xS) for sodium ion storage

Room-temperature synthesis of nonstoichiometric copper sulfide (Cu_2−xS) for sodium ion storage