Mixing amorphous carbon enhanced electrochemical performances of NiCo2O4 nanoparticles as anode materials for sodium-ion batteries

Nguyen, Hong Ha; To, Nguyen V.; Tran, Thu V.; Nguyen, Ky V.; Luong, Son T.; Nguyen, Nga N. T.; Hoang, Chung Vu; Nguyen, Hieu S.; Nguyen, Nghia Van

doi:10.1007/s00339-020-03713-0

Cited by 9 publications

(1 citation statement)

References 42 publications

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“…TMSs, including Co 9 S 8 , however, still suffer from the large volume expansion during the insertion/extraction of Li + /Na + , the intrinsically poor electronic conductivity, as well as the resultant capacity attenuation and poor rate capability, which have seriously impeded the further practical applications [24][25][26]. One typical strategy of boosting TMSs' electrochemical performances is used by encapsulating TMS nanostructures within carbonaceous matrix [27][28][29][30][31][32][33][34][35][36][37][38]. Co 9 S 8 nanoclusters confined within the sulfur-doped carbon foam (Co 9 S 8 @S-CF) were synthesized using a sulfur-assisted pyrolyzing approach, and provided a reversible capacity of 373 mAh g −1 after 1000 cycles at 0.25 A g −1 as anode material for SIBs [39].…”

Section: Introductionmentioning

confidence: 99%

Eco-synthesized bimetallic sulfide nanoparticles within coral-like N,S-doped carbon scaffolds for lithium-/sodium-ion anode nanomaterials

et al. 2021

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Long-cycling of anode nanomaterials is crucial for promoting lithium-ion batteries (LIBs) and sodium-ion batteries (SIBs) towards the further practical applications. Anode nanomaterials, such as transition-metal sulfides (TMSs), are conventionally prepared via sulfuration with additional conventional sulfur sources. Herein, we prepare bimetallic sulfide (Co 0.83 Fe 0.17 ) 9 S 8 nanoparticles confined within coral-like N,S co-doped carbon scaffolds ((Co 0.83 Fe 0.17 ) 9 S 8 /N,S-C) as anode nanomaterials for LIBs and SIBs, without introducing additional sulfur source. The (Co 0.83 Fe 0.17 ) 9 S 8 /N,S-C composite is eco-synthesized by direct pyrolysis of a mixture of metanilic acid intercalated CoFe-LDH and acid yellow 49 (AY49), thus endowed with the integrated advantageous features: bimetallic (Co 0.83 Fe 0.17 ) 9 S 8 , N,S co-doped carbon scaffold (14.2 wt%), the appropriate specific surface area and mesoporous structure. The electrochemical testing demonstrates that the composite exhibits a reversible capacity of 948.8 mAh g -1 after 80 cycles at 0.1 A g -1 for LIBs, and a decent reversible capacity of 392.9 mAh g -1 after 50 cycles at 0.1 A g -1 for SIBs, which are both superior to those of the Co 9 S 8 /N,S-C counterpart. The enhancement is supported by the result of low charge resistance determined by electrochemical impedance spectroscopy. Our results may provide an eco-efficient synthetic method for the preparation of TMSs for energy storage.

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Section: Introductionmentioning

confidence: 99%

Eco-synthesized bimetallic sulfide nanoparticles within coral-like N,S-doped carbon scaffolds for lithium-/sodium-ion anode nanomaterials

et al. 2021

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Electrolyte Engineering on Performance Enhancement of NiCo₂S₄ Anode for Sodium Storage

Fan

Liu

Xie

et al. 2023

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NiCo2S4 is an attractive anode for sodium‐ion batteries (SIBs) due to its high capacity and excellent redox reversibility. Practical deployment of NiCo2S4 electrode in SIBs, however, is still hindered by the inferior capacity and unsatisfactory cycling performance, which result from the mismatch between the electrolyte chemistry and electrode. Herein, a functional electrolyte containing 1.0 m NaCF3SO3 in diethylene glycol dimethyl ether (DEGDME) (1.0 m NaCF3SO3‐DEGDME) is developed, which can be readily used for NiCo2S4 anode with high initial coulomb efficiency (96.2%), enhanced cycling performance, and boosted capacities (341.7 mA h g−1 after 250 continuous cycles at the current density of 200 mA g−1). The electrochemical tests and related phase characterization combined with density functional theory (DFT) calculation indicate the ether‐based electrolyte is more suitable for the NiCo2S4 anode in SIBs due to the formation of a stable electrode–electrolyte interface. Additionally, the importance of the voltage window is also demonstrated to further optimize the electrochemical performance of the NiCo2S4 electrode. The formation of sulfide intermediates during charging and discharging is predicted by combining DFT and verified by in situ XRD and HRTEM. The findings indicate that electrolyte engineering would be an effective way of performance enhancement for sulfides in practical SIBs.

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Pyrochlore phase (Y,Dy,Ce,Nd,La)2Sn2O7 as a superb anode material for lithium-ion batteries

Jiang

Ren

et al. 2023

J Solid State Electrochem

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Mixing amorphous carbon enhanced electrochemical performances of NiCo2O4 nanoparticles as anode materials for sodium-ion batteries

Cited by 9 publications

References 42 publications

Eco-synthesized bimetallic sulfide nanoparticles within coral-like N,S-doped carbon scaffolds for lithium-/sodium-ion anode nanomaterials

Eco-synthesized bimetallic sulfide nanoparticles within coral-like N,S-doped carbon scaffolds for lithium-/sodium-ion anode nanomaterials

Electrolyte Engineering on Performance Enhancement of NiCo₂S₄ Anode for Sodium Storage

Pyrochlore phase (Y,Dy,Ce,Nd,La)2Sn2O7 as a superb anode material for lithium-ion batteries

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Mixing amorphous carbon enhanced electrochemical performances of NiCo2O4 nanoparticles as anode materials for sodium-ion batteries

Cited by 9 publications

References 42 publications

Eco-synthesized bimetallic sulfide nanoparticles within coral-like N,S-doped carbon scaffolds for lithium-/sodium-ion anode nanomaterials

Eco-synthesized bimetallic sulfide nanoparticles within coral-like N,S-doped carbon scaffolds for lithium-/sodium-ion anode nanomaterials

Electrolyte Engineering on Performance Enhancement of NiCo2S4 Anode for Sodium Storage

Pyrochlore phase (Y,Dy,Ce,Nd,La)2Sn2O7 as a superb anode material for lithium-ion batteries

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Electrolyte Engineering on Performance Enhancement of NiCo₂S₄ Anode for Sodium Storage