Design tremella-like Ni-Co selenide with wonderful electrochemical performances as supercapacitor cathode material

Qu, Zhigang; Li, Jianchen; Guo, Manying; Zhao, Lijun; Duan, Lianfeng; Ding, Shanshan

doi:10.1016/j.electacta.2021.139049

Cited by 19 publications

(7 citation statements)

References 56 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

Section: Resultsmentioning

confidence: 99%

“…5e show a pair of redox peaks that reveal the occurrence of pseudocapacitor-type Faradaic redox Ni 3+/ Ni 2+ or Co 3+/ Co 2+ reactions with OH − . The suggested redox reactions are as follows 30 : 32 . Therefore, the current response can be defined as the combination of two separate mechanisms: capacitive contribution (k 1 ν) and diffusion-controlled contribution (k 2 ν 1/2 ) at a fixed potential (V).…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

H-CoNiSe2/NC dodecahedral hollow structures for high-performance supercapacitors

Salehan

Ensafi

Andikaey

et al. 2023

Sci Rep

View full text Add to dashboard Cite

The synergistic effect between metal ions and increasing the surface area leads to the fabrication of supercapacitor materials with high capacities. It is predicted that transition metal selenide compounds will be ideal electrode materials for supercapacitors. However, the defects of poor conductivity and volume expansion of the compounds are fundamental problems that must be solved. In this work, we successfully synthesized the cobalt–nickel selenide nitrogen-doped carbon (H-CoNiSe2/NC) hollow polyhedral composite structure using ZIF-67 as a precursor. The CoSe2 and NiSe2 nanoparticles embedded in the NC polyhedral framework offer a wealth of active sites for the whole electrode. Moreover, the presence of the NC structure in the proposed composite can simultaneously lead to improved conductivity and reduce the volume effect created during the cycling procedure. The H-CoNiSe2/NC electrode provides high specific capacity (1131 C/g at 1.0 A/g) and outstanding cyclic stability (90.2% retention after 6000 cycles). In addition, the H-CoNiSe2/NC//AC hybrid supercapacitor delivers ultrahigh energy density and power density (81.9 Wh/kg at 900 W/kg) and excellent cyclic stability (92.1% of the initial capacitance after 6000 cycles). This study will provide a supercapacitor electrode material with a high specific capacity for energy storage devices.Please confirm the corresponding affiliation for the 'Ali A. Ensafi' author is correctly identified.Error during converting author query response. Please check the eproofing link or feedback pdf for details

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

H-CoNiSe2/NC dodecahedral hollow structures for high-performance supercapacitors

Salehan

Ensafi

Andikaey

et al. 2023

Sci Rep

View full text Add to dashboard Cite

show abstract

“…5e show a pair of redox peaks, which reveal the occurrence of pseudocapacitor-type Faradaic redox Ni 3+/ Ni 2+ or Co 3+/ Co 2+ reactions with OH . The suggested redox reactions are as follows 24 :…”

Section: Resultsmentioning

confidence: 99%

H-CoNiSe2/NC Dodecahedral Hollow Structures for High-performance Supercapacitors

Ensafi

Salehan

Andikaey

et al. 2022

Preprint

View full text Add to dashboard Cite

The synergistic effect between metal ions and increasing the surface area leads to the fabrication of supercapacitor materials with high capacity. It is predicted that transition metal selenide compounds will be ideal electrode materials for supercapacitors. However, the defects of poor conductivity and volume expansion of the compounds are fundamental problems that must be solved. In this work, we successfully synthesized the cobalt-nickel selenide nitrogen-doped carbon (H-CoNiSe2/NC) hollow polyhedral composite structure using ZIF-67 as a precursor. The CoSe2 and NiSe2 nanoparticles embedded in the NC polyhedral framework offer a wealth of active sites for the whole electrode. Moreover, the presence of the NC structure in the proposed composite can simultaneously lead to improved conductivity and reduce the volume effect created during the cycling procedure. The H-CoNiSe2/NC electrodes provide high specific capacity (1131 C/g at 1.0 A/g) and outstanding cyclic stability (91.4% retention after 3000 cycles). In addition, the H-CoNiSe2/NC//AC hybrid supercapacitors deliver ultrahigh energy density and power density (81.9 Wh/kg at 900 W/kg) and excellent cycle stability (93.5% of initial capacity after 3000 cycles). This study will provide a supercapacitor electrode material with a high specific capacity for energy storage devices.

show abstract

“…6(C) and Table S1 in the ESI †). 38,[84][85][86][87][88][89][90] In detail, FCS@NCS2@NF delivered capacities of 874, 850.25, 800, 700.25, 650, and 610.75 C g À1 at 1, 3, 5, 10, 20, and 30 A g À1 , respectively, which were larger than those of FCS@NCS1@NF and FCS@NCS3@NF electrodes (Fig. S10(B) †).…”

Section: (D) (Inset)mentioning

confidence: 99%

A high-performance hybrid supercapacitor by encapsulating binder-less FeCoSe₂ nanosheets@NiCoSe₂ nanoflowers in a graphene network

Amiri

Zardkhoshoui

Davarani

et al. 2022

Sustainable Energy Fuels

View full text Add to dashboard Cite

show abstract

Design tremella-like Ni-Co selenide with wonderful electrochemical performances as supercapacitor cathode material

Cited by 19 publications

References 56 publications

H-CoNiSe2/NC dodecahedral hollow structures for high-performance supercapacitors

H-CoNiSe2/NC dodecahedral hollow structures for high-performance supercapacitors

H-CoNiSe2/NC Dodecahedral Hollow Structures for High-performance Supercapacitors

A high-performance hybrid supercapacitor by encapsulating binder-less FeCoSe₂ nanosheets@NiCoSe₂ nanoflowers in a graphene network

Contact Info

Product

Resources

About

Design tremella-like Ni-Co selenide with wonderful electrochemical performances as supercapacitor cathode material

Cited by 19 publications

References 56 publications

H-CoNiSe2/NC dodecahedral hollow structures for high-performance supercapacitors

H-CoNiSe2/NC dodecahedral hollow structures for high-performance supercapacitors

H-CoNiSe2/NC Dodecahedral Hollow Structures for High-performance Supercapacitors

A high-performance hybrid supercapacitor by encapsulating binder-less FeCoSe2 nanosheets@NiCoSe2 nanoflowers in a graphene network

Contact Info

Product

Resources

About

A high-performance hybrid supercapacitor by encapsulating binder-less FeCoSe₂ nanosheets@NiCoSe₂ nanoflowers in a graphene network