Nanostructured Boron‐Doped Ultra‐Nanocrystalline Diamond Micro‐Pyramids - Efficient Electrochemical Supercapacitors
At a Glance
Section titled “At a Glance”| Metadata | Details |
|---|---|
| Publication Date | 2024-12-15 |
| Journal | Small |
| Authors | Shradha Suman, Dhananjay K. Sharma, Ondrej Szabó, Benadict Rakesh, Marián Marton |
| Institutions | Academy of Scientific and Innovative Research, Slovak University of Technology in Bratislava |
| Citations | 4 |
Abstract
Section titled “Abstract”Abstract 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 (Si P ) using a simple reactive ion etching (RIE) process. During the etching process, the high aspect ratio and the induction of sp 2 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/Si P 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/Si P ’s potential for advancing miniaturized supercapacitors with high capacitance retention, cycle stability, and energy density.
Tech Support
Section titled “Tech Support”Original Source
Section titled “Original Source”References
Section titled “References”- 2015 - Handbook of Clean Energy Systems