Dual-salt strategy tuning the solvation structure to achieve high cycling stability for FeS2 cathodes

Ren, Zhenzhen; Li, Shuai; Liu, Hongyu; Wang, Hao; Niu, Xiaobin; Yang, Qi; Wang, Liping

doi:10.1016/j.jcis.2024.02.164

Journal of Colloid and Interface Science

2024

DOI: 10.1016/j.jcis.2024.02.164

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Dual-salt strategy tuning the solvation structure to achieve high cycling stability for FeS2 cathodes

Zhenzhen Ren,

Shuai Li,

Hongyu Liu

et al.

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2024

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Cited by 2 publications

References 48 publications

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Electrolyte with weakly coordinating solvents for high-performance FeS2 cathode

Li,

Liu,

Zheng

et al. 2024

Nano Energy

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Electrolyte with weakly coordinating solvents for high-performance FeS2 cathode

Li,

Liu,

Zheng

et al. 2024

Nano Energy

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Chelating-Type Binders toward Stable Cycling and High-Safety Transition-Metal Sulfide-Based Lithium Batteries

Liu,

Wu,

Wang

et al. 2024

ACS Energy Lett.

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Conversion-type transition-metal sulfides (MS x ) are considered promising cathodes due to their low cost, easy availability, and high energy density. However, MS x cathodes experience severe capacity decay when cycling in conventional carbonate-based electrolytes because of irreversible nucleophilic reactions between carbonate solvents and polysulfide intermediates. To address this issue, a series of chelating-type binders has been designed for enabling MS x to function effectively. As a result, a typical transition-metal sulfide FeS2 cathode can work reversibly with a high capacity of 527.3 mAh g–1 over 300 cycles, retaining 76.9% capacity under an ultrahigh loading of 5.6 mAh cm–2. Additionally, a new type of battery featuring FeS2 cathodes coupled with LiC6 anodes in carbonate electrolyte has been developed for high stability (72.0% retention after 300 cycles) and safety. This work demonstrates the potential of conversion-type lithium batteries for achieving long cycle life and high safety.

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Dual-salt strategy tuning the solvation structure to achieve high cycling stability for FeS2 cathodes

Cited by 2 publications

References 48 publications

Electrolyte with weakly coordinating solvents for high-performance FeS2 cathode

Electrolyte with weakly coordinating solvents for high-performance FeS2 cathode

Chelating-Type Binders toward Stable Cycling and High-Safety Transition-Metal Sulfide-Based Lithium Batteries

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