Coordination effect of network NiO nanosheet and a carbon layer on the cathode side in constructing a high-performance lithium–sulfur battery

Wang, Jie; Liang, Jianing; Wu, Jianzhong; Xuan, Cuijuan; Wu, Zexing; Guo, Xuyun; Lai, Chenglong; Zhu, Ye; Wang, Deli

doi:10.1039/c8ta00270c

Cited by 70 publications

(60 citation statements)

References 53 publications

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“…But, that of M‐Sb 2 S 3 @DC derives from conversion reaction, illustrating that the carbon and SbC bonds serves synergistic roles to regulate poly‐sulfide. [ 25 ] Besides, for M‐Sb 2 S 3 @DC, CR of conversion reaction is larger than that of CR of alloying reaction, which is attributed that the Sb was coated in situ generated Li 2 S with inferior conductivity, thus leading to the relative low CR. Noticeably, the CR of M‐Sb 2 S 3 from conversion process (pink) is about 36%, much smaller than that of M‐Sb 2 S 3 @DC (50%), which is ascribed that the existing carbon and SbC bonds would be beneficial for trapping polysulfide to improve the reversibility.…”

Section: Resultsmentioning

confidence: 99%

Interfacial Bonding of Metal‐Sulfides with Double Carbon for Improving Reversibility of Advanced Alkali‐Ion Batteries

Zhang

Zhao

et al. 2020

Adv Funct Materials

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Engineering interfacial properties of metal-sulfides toward excellent electrochemical capability is imperative for advanced energy-storage materials. However, they still suffer from an unclear mechanism of capacity fading, along with ineffective physical-chemical evolution. Herein, a highly-effective Sb 2 S 3 with double carbon is designed with interfacial SbC bonds and double carbon, which boosts promoting of ion transferring and alleviates the separation of both active phases (Sb, S). Through "voltage-cutting" manners, the key elements of capacity improvement about phase transitions are further determined. As expected, even at 5.0 A g −1 , the lithium-storage capacity remains about 674 mAh g −1 . Utilized as sodium ion battery (SIB) anode, the rate capacity still reaches up to 366 mAh g −1 at 3.0 A g −1 , much larger than that of Sb 2 S 3 . Obtaining the full cell of Ni-Fe Prussian blue analog versus M-Sb 2 S 3 @DC, the reversible capacity is 330 mAh g −1 at 0.5 A g −1 . Supported by kinetic analysis, the excellent rate properties are determined by the surface-controlling behaviors, mainly resulting from the decreased capacitive resistance and improved ion moving. Furthermore, the reassembling evolution of active phases is revealed in detail by ex situ techniques. This work is expected to offer significant insights into interfacial evolutions toward advanced energy-storage systems.

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Section: Resultsmentioning

confidence: 99%

Interfacial Bonding of Metal‐Sulfides with Double Carbon for Improving Reversibility of Advanced Alkali‐Ion Batteries

Zhang

Zhao

et al. 2020

Adv Funct Materials

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“…Thus, the irreversible loss of sulfur can be alleviated and keep a balance during cycling. Besides, the trace amount of Fe and Ni based catalysts may play a positive role in absorbing LiPSs, according to previous reports . In comparison, the CF−S/G cathodes with 5.0 and 6.0 mg cm −2 sulfur‐loading display initial discharge capacity of 934 and 953 mAh g −1 at 0.2 C and a remaining capacity of 807 and 705 mAh g −1 after 100 cycles, while the Coulombic efficiencies are low and even less than 90 %.…”

Section: Resultsmentioning

confidence: 99%

Carbon Nanofibers Grown on Carbon Felt as a Reinforced Current Collector for High‐Performance Lithium−Sulfur Batteries

et al. 2018

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Lithium−sulfur (Li−S) batteries have attracted much attention, owing to their high theoretical energy density. Many studies have focused on improving areal sulfur loading by using carbonaceous current collectors. However, low sulfur utilization and polysulfide diffusion could be more severe. Herein, we introduce a reinforced current collector consisting of carbon felt (CF) decorated with carbon nanofibers (CNFs), prepared by using chemical vapor deposition (CVD). The CF@CNFs skeleton shows a large specific surface area for well‐dispersed active materials, highly conductive network with faster electronic/ionic transport, and a micro‐/mesoporous structure for spatial confinement on polysulfides. As a result, the cells with CF@CNFs current collectors exhibit a high specific capacity, superior cycling stability, and a good rate capacity. This work will provide a promising choice for designing novel current collectors toward high‐performance, high sulfur‐loading Li−S batteries.

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“…In the potential of 3.0-0.5 V, it is found that NiSe 2 /N-C delivered the initial discharge/charge capacity of 446.9/416.3 mAh g −1 with coulombic efficiency (CE, 93%), while that of C-NiSe 2 , P-NiSe 2 shown 421. Benefitting from the experience of Na-S battery system, it can be deduced that the NiOC bonds facilitated the trapping of polyselenide, [48,49] effectively remaining the highest residual capacity of NiSe 2 /N-C. Moreover, the CE of P-NiSe 2 was lowest, which is attributed to more exposure of surface area.…”

Section: Exploring the Electrochemical Properties Of Ni-pr C-nise 2 mentioning

confidence: 94%

“…Meanwhile, the metalOC bonds, as the electronic shuttling bridge, could favor the electronic shuttling. [45,48,49] Herein, the clew-like Ni-Pr/PPy spheres were successfully prepared through the self-assembly of Ni-seeds and the in situ polymerization of pyrrole monomer. [45] Owing to the larger atomic radii of Se, the dissolution of poly-selenide was weaker than that of polysulfide.…”

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confidence: 99%

Hierarchical Hollow‐Microsphere Metal–Selenide@Carbon Composites with Rational Surface Engineering for Advanced Sodium Storage

et al. 2018

Advanced Energy Materials

236

140

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As a result of its high‐energy density, metal–selenides have demanded attention as a potential energy‐storage material. But they suffer from volume expansion, dissolved poly‐selenides and sluggish kinetics. Herein, utilizing' thermal selenization via the Kirkendall effect, microspheres of NiSe2 confined by carbon are successfully obtained from the self‐assembly of Ni‐precursor/PPy. The derived hierarchical hollow architecture increases the active defects for sodium storage, while the existing double N‐doped carbon layers significantly alleviate the volume swelling. As a result, it shows ultrafast rate capability, delivering a stable capacity of 374 mAh g−1, even after 3000 loops at 10.0 A g−1. These remarkable results may be ascribed to the NiOC bonds on the interface of NiSe2 and the carbon film, which leads to the faster transfer of ions, the effective trapping of poly‐selenide, and the highly reversible conversion reaction. The kinetic analysis of cyclic voltammetry (CV) demonstrates that the electrochemical process is mainly dominated by pseudocapacitive behaviors. Supported by the results of electrochemical impedance spectroscopy (EIS), it is confirmed that the solid–electrolyte interface films are reversibly formed/decomposed during cycling. Given this, this elaborate work might open up a potential avenue for the rational design of metal‐sulfur/selenide anodes for advanced battery systems.

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Coordination effect of network NiO nanosheet and a carbon layer on the cathode side in constructing a high-performance lithium–sulfur battery

Abstract: Network structured NiO sheets served as a mediator for lithium-sulfur battery coupled with a carbon layer on the cathode side in combination prevented the dissolution of polysulfides, enhanced the rate capability and long-term stability.

Cited by 70 publications

References 53 publications

Interfacial Bonding of Metal‐Sulfides with Double Carbon for Improving Reversibility of Advanced Alkali‐Ion Batteries

Interfacial Bonding of Metal‐Sulfides with Double Carbon for Improving Reversibility of Advanced Alkali‐Ion Batteries

Carbon Nanofibers Grown on Carbon Felt as a Reinforced Current Collector for High‐Performance Lithium−Sulfur Batteries

Hierarchical Hollow‐Microsphere Metal–Selenide@Carbon Composites with Rational Surface Engineering for Advanced Sodium Storage

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