Nanostructured boron-doped ultra-nanocrystalline diamond micro-pyramids: efficient electrochemical supercapacitors

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F25%3A00616764" target="_blank" >RIV/68378271:_____/25:00616764 - isvavai.cz</a>
Result on the web
<a href="https://hdl.handle.net/11104/0366009" target="_blank" >https://hdl.handle.net/11104/0366009</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1002/smll.202407514" target="_blank" >10.1002/smll.202407514</a>

Result language
angličtina
Original language name
Nanostructured boron-doped ultra-nanocrystalline diamond micro-pyramids: efficient electrochemical supercapacitors
Original language description
The miniaturization of electrochemical supercapacitors (EC-SCs) requires electrode materials that are both durable and efficient. Boron-doped diamond (BDD) films are an ideal choice for EC-SC due to their durability and exceptional electrochemical performance. In this study, nanostructured boron-doped ultra-nanocrystalline diamonds (NBUNCD) are fabricated on Si micro-pyramids (SiP) using a simple reactive ion etching (RIE) process. During the etching process, the high aspect ratio and the induction of sp2 graphite in these nanorod electrodes achieved a maximum specific capacitance of 53.7 mF cm−2 at a current density of 2.54 mA cm−2, with a 95.5% retention after 5000 cycles. Additionally, the energy density reached 54.06 µW h cm−2 at a power density of 0.25 µW cm−2. A symmetric pouch cell using NBUNCD/SiP exhibited a specific capacitance of 0.23 mF cm−2 at 20 µA cm−2, an energy density of 31.98 µW h cm−2, and a power density of 0.91 µW cm−2. These superior EC properties highlight NBUNCD/SiP’s potential for advancing miniaturized supercapacitors with high capacitance retention, cycle stability, and energy density.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10302 - Condensed matter physics (including formerly solid state physics, supercond.)

Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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