首页|Preparation of boron–nitrogen co-doped diamond/boron-doped diamond electrodes for aqueous capacitors with AC line-filtering performance
Preparation of boron–nitrogen co-doped diamond/boron-doped diamond electrodes for aqueous capacitors with AC line-filtering performance
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NSTL
Elsevier
? 2022 Elsevier B.V.Boron–nitrogen co-doped diamond (BNDD) nanostructures are grown in situ on a boron-doped diamond (BDD) film, and the effects of B and N doping on the BNDD-layer morphology and composition are systematically investigated. A competitive control mechanism of BNDD etching and growth under the synergistic action of the B and N atoms is revealed and, hence, a controllable preparation process for porous BNDD films and BNDD nanosheets on BDD is proposed. In an NaCl aqueous solution, the positive-potential window of the BNDD electrode reaches 0–1.2 V, the negative-potential window reaches ?1.6–0 V, and the working voltage of the constructed capacitor reaches 2.8 V. The proposed capacitor exhibits a high power density of 21,458.33 μW cm?2 at 0.02 μW h cm?2 energy density, and a high energy density of 0.42 μWh cm?2 at 1224.22 μW cm?2 power density. Furthermore, the BNDD-based capacitor demonstrates excellent stability, with 104.8% capacitance retention and 101.2% Coulombic efficiency after 50,000 cycles. The capacitor filters alternating-current (AC) signals in a wide frequency range of 50 Hz–1 MHz, with an output-signal voltage loss of 0.17–0.48 V. The proposed aqueous BNDD-based capacitor has considerable application potential in the filtering of broadband and high-frequency AC signals.
AC line-filteringAqueous capacitorBoron–nitrogen co-dopingDiamond nanostructures
Nie W.、Li M.、Li C.、Sun Y.、Li H.
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Tianjin Key Laboratory of Film Electronic and Communication Devices Engineering Research Center of Optoelectronic Devices & Communication Technology (Ministry of Education) School of Integrated Circuit Science and Engineering Tianjin University of Technology
Tianjin Key Laboratory of Organic Solar Cells and Photochemical Conversion Tianjin Key Laboratory of Drug Targeting and Bioimaging School of Chemistry and Chemical Engineering Tianjin University of Technology
NSTL
Elsevier
