Boosting the performance of nickel–cobalt LDH cathode with phosphorus and selenium co-doping for hybrid supercapacitor

Through composition design and structural regulation, low electronegativity selenium and phosphorus were doped into NiCo LDH nanosheets to prepare phosphorus and selenium co-doped nickel–cobalt layered double hydroxide electrodes (P, Se-NiCo LDH), which can enhance the availability of active sites,...

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Bibliographic Details
Published inMaterials research letters Vol. 10; no. 9; pp. 593 - 601
Main Authors Shan, Xinyu, Guo, Zuoxing, Qu, Zihan, Zou, Yining, Zhao, Lijun, Chen, Peng
Format Journal Article
LanguageEnglish
Published New York Taylor & Francis Ltd 01.09.2022
Taylor & Francis Group
Subjects
Cathodes
Cobalt
Composite materials
Education
Electrodes
Electronegativity
Energy
flake structure
Hydroxides
Intermetallic compounds
Laboratories
Materials science
Nickel
NiCo LDH
Phosphorus
Pore size
P–Se co-doping
Reaction kinetics
Selenium
Supercapacitors
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Summary:Through composition design and structural regulation, low electronegativity selenium and phosphorus were doped into NiCo LDH nanosheets to prepare phosphorus and selenium co-doped nickel–cobalt layered double hydroxide electrodes (P, Se-NiCo LDH), which can enhance the availability of active sites, significantly improve the conductivity and promote the reaction kinetics. Prepared it as a positive cathode of supercapacitor ultrahigh energy density (61.23 Wh kg−1) and power density (16496.5 W kg−1) can be obtained. Rate performance of the hybrid supercapacitor can be maintained 50.9% at 20 A g−1. Both excellent rate performance and energy density may promote the wider application of supercapacitors.
ISSN:2166-3831
2166-3831
DOI:10.1080/21663831.2022.2077149