Yazarlar |
Bhushan Patil
|
Doç. Dr. Bekir SATILMIŞ
Ahi Evran Üniversitesi, Türkiye |
Mohammad Aref Khalily
|
Tamer Uyar
|
Özet |
Portable and flexible energy devices demand lightweight and highly efficient catalytic materials for use in energy devices. An efficient water splitting electrocatalyst is considered an ideal future energy source. Well-aligned high-surface-area electrospun polymers of intrinsic microporosity (PIM-1)-based nitrogen-doped carbon nanofibers were prepared as a free-standing flexible electrode. A non-noble-metal catalyst NiOOH/Ni(OH)(2) was precisely deposited over flexible free-standing carbon nanofibers by using atomic layer deposition (ALD). The morphology, high surface area, nitrogen doping, and Ni states synergistically showed a low onset potential ((HER)=-40 and (OER)=290mV vs. reversible hydrogen electrode), small overpotential at (10) [oxygen evolution reaction (OER)=390.5mV and hydrogen evolution reaction (HER)=-147mV], excellent kinetics (Tafel slopes for OER=50mVdec(-1) and HER=41mVdec(-1)), and high stability (>16h) towards water splitting in an alkaline medium (0.1m KOH). The performance was comparable with that of state-of-the-art noble-metal catalysts (e.g., Ir/C, Ru/C for OER, and Pt/C for HER). Post-catalytic characterization with X-ray photoelectron spectroscopy (XPS) and Raman spectroscopy further proved the durability of the electrode. This study provides insight into the design of 1D-aligned N-doped PIM-1 electrospun carbon nanofibers as a flexible and free-standing NiOOH/Ni(OH)(2) decorated electrode as a highly stable nanocatalyst for water splitting in an alkaline medium. |
Anahtar Kelimeler |
atomic layer deposition | carbon fibers | electrospinning | nickel | water splitting |
Makale Türü | Özgün Makale |
Makale Alt Türü | SSCI, AHCI, SCI, SCI-Exp dergilerinde yayımlanan tam makale |
Dergi Adı | CHEMSUSCHEM |
Dergi ISSN | 1864-5631 |
Dergi Tarandığı Indeksler | SCI-Expanded |
Dergi Grubu | Q1 |
Makale Dili | İngilizce |
Basım Tarihi | 04-2019 |
Cilt No | 12 |
Sayı | 7 |
Sayfalar | 1469 / 1477 |
Doi Numarası | 10.1002/cssc.201802500 |
Makale Linki | https://chemistry-europe.onlinelibrary.wiley.com/doi/abs/10.1002/cssc.201802500 |