Ni-Co sulfide hollow nanoboxes with enhanced lattice interfaces for high performance hybrid supercapacitors

Wu, Hongpeng; Wei, Zhihua; Yin, Junying; Jiang, Sen; Wu, Jiahao; Zheng, Shuilin; He, Jinpeng; Xu, Xin; Gao, Yunfang

doi:10.1016/j.electacta.2021.138445

Cited by 23 publications

(18 citation statements)

References 53 publications

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“…The recombination of different transition metal sulfides can form heterogeneous structures, optimize the electron/ion migration path, fully expose the surface active sites, and greatly improve the electrochemical energy storage performance . In particular, the capacitance of nickel-cobalt sulfide is much higher than that of other binary metal sulfides due to the perfect synergy between Ni and Co elements. , Wu et al reported a strategy to obtain nickel-cobalt sulfide, which has rich lattice interfaces and widespread mesopores . The unique structure can effectively improve the ion diffusion rate and shorten the electron transport path.…”

Section: Introductionmentioning

confidence: 99%

“…19,20 Wu et al reported a strategy to obtain nickel-cobalt sulfide, which has rich lattice interfaces and widespread mesopores. 21 The unique structure can effectively improve the ion diffusion rate and shorten the electron transport path. The synergistic effect between the bimetals further improves the electrochemical performance, with a high specific capacitance of 1578 F g −1 at 1 A g −1 .…”

Section: Introductionmentioning

confidence: 99%

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Flower-like Heterogeneous Phosphorus-Doped Co₃S₄@Ni₃S₄ Nanoparticles as a Binder-free Electrode for Asymmetric All-Solid-State Supercapacitors

Tan

Feng

Yang

et al. 2023

ACS Appl. Energy Mater.

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Through the hydrothermal method and the gas-phase phosphating method, the flower-like heterogeneous phosphorus-doped Co 3 S 4 @Ni 3 S 4 was synthesized in situ on a nickel foam substrate as the binder-free electrode material for supercapacitors. Phosphorus-doped Co 3 S 4 @Ni 3 S 4 electrode material combines the merits of transition metal sulfides and 3D porous network heterostructure, showing the excellent theoretical specific capacitance and the high specific surface area. The introduction of phosphorus atoms with an atomic radius larger than sulfur atoms can optimize the internal electronic structure and cause structural distortion. Therefore, the specific capacitance/specific capacity of this electrode can reach 3614 F g −1 (451 mAh g −1 ) at 1 A g −1 and still maintain the initial specific capacitance of 73% after 3000 cycles. The assembled P−Co 3 S 4 @Ni 3 S 4 -175//AC ASC device exhibits an ultra-high energy density of 72 Wh kg −1 at a power density of 800 W kg −1 . Meanwhile, it can show extraordinary cyclic stability, with a retention rate of 91% after 5000 cycles. This work provides a feasible synthesis method to prepare the composite electrode materials for supercapacitors. KEYWORDS: phosphorus doped, heterogeneous structure, Co 3 S 4 @Ni 3 S 4 nanoparticles, high specific capacitance, asymmetric all-solid-state supercapacitors

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Flower-like Heterogeneous Phosphorus-Doped Co₃S₄@Ni₃S₄ Nanoparticles as a Binder-free Electrode for Asymmetric All-Solid-State Supercapacitors

Tan

Feng

Yang

et al. 2023

ACS Appl. Energy Mater.

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“…The deconvolution peaks at binding energies of 853.3 eV and 870.1 eV are attributed to the Ni 2p 3/2 and Ni 2p 1/2 of Ni 2+ , while the peaks at 857.0 eV and 874.8 eV are derived from Ni 3+ . 47 The Co 2p spectrum in Fig. 3(d) also presents two different spin–orbit doublets and two oscillating satellites, similar to the Ni 2p spectrum.…”

Section: Resultsmentioning

confidence: 59%

“…S1(a To explore elemental compositions and valence states of a substance, XPS is a useful technique. The XPS survey spectrum 47 The Co 2p spectrum in Fig. 3(d) also presents two different spin-orbit doublets and two oscillating satellites, similar to the Ni 2p spectrum.…”

Section: Morphologies and Physicochemical Propertiesmentioning

confidence: 70%

Enhancement of the capacitive performance of Ni₂CoS₄ by incorporation of graphitized carbon dots

Tang

Wang

et al. 2023

New J. Chem.

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“…It should be pointed out that there were different affiliations of such peaks in the literatures [31–34] . In this work, the peaks at 161.5 eV for S 2p 3/2 and 162.7 eV for S 2p 1/2 are indexed to metal‐S bonds (Ni−S or Co−S), and the peak at 164.2 eV is related to the low‐valence S species (S 8 molecules or polysulfide ions) [35–37] . The peak at 167–171 eV is assigned to the surface S species in higher oxidation state, mostly coming from sulfate or sulfite‐like species from surface oxidation [38] .…”

Section: Resultsmentioning

confidence: 77%

CoNi₂S₄ Electrode with High Mass‐Loading for High‐Energy‐Density Supercapacitor: Role of S‐Containing Anions Exchange

Wang

Chen

et al. 2023

Chemistry A European J

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Anion exchange is recognized as an effective method to regulate the composition, electronic conductivity, and electrochemical behavior of the transition metal-based compounds. In this work, anion exchange is adopted as a rational post-treatment route to facilitate the capacitive activity of CoNi 2 S 4 nanoparticle arrays grown on carbon cloth (CC) with high mass-loading. As soaked in saturated Na 2 S solution, the CoNi 2 S 4 /CC electrode showed an increased capacity from 483 C g À 1 to 841 C g À 1 at 10 mA cm À 2 with excellent rate performance and stable cycling performance, which was superior to the CoNi 2 S 4 /CC electrode activated by NaBH 4 reduction. Anion exchange was beneficial for enhancing the crystallinity, retaining the adhesion of nanoarrays, and realizing low resistance nature in a mild route. The asassembled CoNi 2 S 4 /CC//activated CC hybrid supercapacitor delivered a high areal capacitance of 1.28 F cm À 2 at 5 mA cm À 2 , and achieved an energy density of 0.58 mWh cm À 2 at a power density of 4.5 mW cm À 2 with excellent cycle stability with 90.6 % capacity retention after 10000 cycles.

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Ni-Co sulfide hollow nanoboxes with enhanced lattice interfaces for high performance hybrid supercapacitors

Cited by 23 publications

References 53 publications

Flower-like Heterogeneous Phosphorus-Doped Co₃S₄@Ni₃S₄ Nanoparticles as a Binder-free Electrode for Asymmetric All-Solid-State Supercapacitors

Flower-like Heterogeneous Phosphorus-Doped Co₃S₄@Ni₃S₄ Nanoparticles as a Binder-free Electrode for Asymmetric All-Solid-State Supercapacitors

Enhancement of the capacitive performance of Ni₂CoS₄ by incorporation of graphitized carbon dots

CoNi₂S₄ Electrode with High Mass‐Loading for High‐Energy‐Density Supercapacitor: Role of S‐Containing Anions Exchange

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Ni-Co sulfide hollow nanoboxes with enhanced lattice interfaces for high performance hybrid supercapacitors

Cited by 23 publications

References 53 publications

Flower-like Heterogeneous Phosphorus-Doped Co3S4@Ni3S4 Nanoparticles as a Binder-free Electrode for Asymmetric All-Solid-State Supercapacitors

Flower-like Heterogeneous Phosphorus-Doped Co3S4@Ni3S4 Nanoparticles as a Binder-free Electrode for Asymmetric All-Solid-State Supercapacitors

Enhancement of the capacitive performance of Ni2CoS4 by incorporation of graphitized carbon dots

CoNi2S4 Electrode with High Mass‐Loading for High‐Energy‐Density Supercapacitor: Role of S‐Containing Anions Exchange

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Flower-like Heterogeneous Phosphorus-Doped Co₃S₄@Ni₃S₄ Nanoparticles as a Binder-free Electrode for Asymmetric All-Solid-State Supercapacitors

Flower-like Heterogeneous Phosphorus-Doped Co₃S₄@Ni₃S₄ Nanoparticles as a Binder-free Electrode for Asymmetric All-Solid-State Supercapacitors

Enhancement of the capacitive performance of Ni₂CoS₄ by incorporation of graphitized carbon dots

CoNi₂S₄ Electrode with High Mass‐Loading for High‐Energy‐Density Supercapacitor: Role of S‐Containing Anions Exchange