Vertically aligned boron-doped diamond nanostructures as highly efficient electrodes for electrochemical supercapacitors

Nanostructured boron-doped diamond (BDD) offers a sizeable ion-accessible area, high mechanical robustness, and high electrical conductivity, and could be a suitable electrode for high-performance electrochemical (EC) supercapacitors. Herein, two morphological BDD films, namely, boron-doped microcry...

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Veröffentlicht in:Journal of materials chemistry. A, Materials for energy and sustainability Materials for energy and sustainability, 2024-08, Vol.12 (32), p.21134-21147
Hauptverfasser: Suman, Shradha, Sharma, Dhananjay Kumar, Szabo, Ondrej, Rakesh, Benadict, Marton, Marian, Vojs, Marian, Vincze, Andrej, Dutta, Soumya Prakash, Balaji, Umapathi, Debasish, Debidutta, Sakthivel, Ramasamy, Sankaran, Kamatchi Jothiramalingam, Kromka, Alexander
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container_end_page 21147
container_issue 32
container_start_page 21134
container_title Journal of materials chemistry. A, Materials for energy and sustainability
container_volume 12
creator Suman, Shradha
Sharma, Dhananjay Kumar
Szabo, Ondrej
Rakesh, Benadict
Marton, Marian
Vojs, Marian
Vincze, Andrej
Dutta, Soumya Prakash
Balaji, Umapathi
Debasish, Debidutta
Sakthivel, Ramasamy
Sankaran, Kamatchi Jothiramalingam
Kromka, Alexander
description Nanostructured boron-doped diamond (BDD) offers a sizeable ion-accessible area, high mechanical robustness, and high electrical conductivity, and could be a suitable electrode for high-performance electrochemical (EC) supercapacitors. Herein, two morphological BDD films, namely, boron-doped microcrystalline diamond (BMCD) and boron-doped ultra-nanocrystalline diamond (BUNCD), are employed for nanostructuring. The diamond nanopillars are fabricated via the Au mask-assisted reactive ion etching (RIE) method. The nanostructured samples of BMCD and BUNCD are termed BMCD N and BUNCD N . The Raman spectroscopy and X-ray photoelectron spectroscopy measurements of these nanostructured samples confirm the presence of sp 2 in sp 3 -bonded carbon, which combine to offer good EC activity of sp 2 and exceptional stability of sp 3 carbon. These nanostructured BDD samples with enhanced surface area are utilized as electrode materials to construct an electric double-layer capacitor and pseudocapacitor. In 1 M Na 2 SO 4 solution, the maximum specific capacitance of BMCD N is found to be 0.0852 mF cm −2 , whereas, for BUNCD N the value is 0.0784 mF cm −2 . The electrochemical analysis of these samples shows they exhibit superior electron transfer kinetics with 80% capacitance retention after 2000 cycles, which indicates the suitable utilization of these nanostructured samples as electrodes in EC supercapacitors. Nanostructuring boron-doped diamond effectively improves the electrochemical supercapacitor performance with high lifetime stability.
doi_str_mv 10.1039/d3ta07728d
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The Raman spectroscopy and X-ray photoelectron spectroscopy measurements of these nanostructured samples confirm the presence of sp 2 in sp 3 -bonded carbon, which combine to offer good EC activity of sp 2 and exceptional stability of sp 3 carbon. These nanostructured BDD samples with enhanced surface area are utilized as electrode materials to construct an electric double-layer capacitor and pseudocapacitor. In 1 M Na 2 SO 4 solution, the maximum specific capacitance of BMCD N is found to be 0.0852 mF cm −2 , whereas, for BUNCD N the value is 0.0784 mF cm −2 . The electrochemical analysis of these samples shows they exhibit superior electron transfer kinetics with 80% capacitance retention after 2000 cycles, which indicates the suitable utilization of these nanostructured samples as electrodes in EC supercapacitors. 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source Royal Society Of Chemistry Journals
subjects Boron
Capacitance
Carbon
Diamonds
Electrical conductivity
Electrical resistivity
Electrochemical analysis
Electrochemistry
Electrode materials
Electrodes
Electron transfer
Electrons
Etching
Nanostructure
Photoelectron spectroscopy
Photoelectrons
Raman spectroscopy
Reactive ion etching
Sodium sulfate
Spectroscopy
Spectrum analysis
Supercapacitors
Surface stability
X ray photoelectron spectroscopy
title Vertically aligned boron-doped diamond nanostructures as highly efficient electrodes for electrochemical supercapacitors
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