Boosting the performance of nickel–cobalt LDH cathode with phosphorus and selenium co-doping for hybrid supercapacitor. Issue 9 (2nd September 2022)

• Record Type: Journal Article
• Authors: Shan, Xinyu; Guo, Zuoxing; Qu, Zihan; Zou, Yining; Zhao, Lijun; Chen, Peng
• Is Part Of: Materials research letters. Volume 10:Issue 9(2022)
• Page Start: 593
• Page End: 601
• Publication Date: 2022-09-02
• Subjects: NiCo LDH -- flake structure -- P–Se co-doping; Materials science -- Research -- Periodicals; Biomedical materials -- Research -- Periodicals; Composite materials -- Research -- Periodicals; Biomedical materials -- Research; Composite materials -- Research; Materials science -- Research; Periodicals; 620.1105
• DOI: 10.1080/21663831.2022.2077149
• Languages: English
• ISSNs: 2166-3831

Abstract

Abstract : 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. GRAPHICAL ABSTRACT: UF0001 IMPACT STATEMENT: P and Se have influence on the morphology and pore size of NiCo LDH, which make P, Se-NiCo LDH have more active sites, and thus promoting the reaction kinetics.