Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | 박원일 | - |
dc.date.accessioned | 2022-12-12T01:41:19Z | - |
dc.date.available | 2022-12-12T01:41:19Z | - |
dc.date.issued | 2022-04 | - |
dc.identifier.citation | Chemical Engineering Journal, v. 434, article no. 134668, Page. 1-9 | en_US |
dc.identifier.issn | 1385-8947;1873-3212 | en_US |
dc.identifier.uri | https://www.sciencedirect.com/science/article/pii/S1385894722001760?via%3Dihub | en_US |
dc.identifier.uri | https://repository.hanyang.ac.kr/handle/20.500.11754/178190 | - |
dc.description.abstract | We demonstrated the electrochemical tuning (ECT) and subsequent self-adaptive evolution (SAE) of NiSi nanowires, which imparted bifunctional electrocatalytic activities comparable to those of noble-metal catalysts. Through the ECT process with lithiation and subsequent rapid delithiation in water, the NiSi nanowires developed amorphous shells dispersed with nanoparticles around intact cores, which preserved their electrical conductivity. Moreover, the amorphous shells of the NiSi nanowires exhibited structural and chemical reconstructions, which further regulated the surface states to become favorable for the O2 evolution reaction (OER) and H2 evolution reaction (HER) by enabling the lattice oxide mechanism and hydrogen adsorption energy, respectively. Because of these SAEs, the NiSi nanowires exhibited excellent electrochemical activities for both the OER and HER with overpotentials of 296 and 156 mV, respectively, at a current density of 100 mA/cm2. This study provides new opportunities for the unveiling and optimizing non-noble-metal electrocatalysts with simple compositions and earth-abundant elements. | en_US |
dc.description.sponsorship | This work was supported by the National Research Foundation of Korea (NRF) funded by the Ministry of Science, ICT and Future Planning (MSIP) of Korea (Nos. 2021R1A2B5B02002596, 2016K1A4A3914691, 2021R1A5A1032996, and 2019R1A2B5B01070215). W.J.C. acknowledges the support from Institute of Information & Communications Technology Planning & Evaluation (IITP) grant funded by the Korean government (MSIT) (No. 2020-0-01373, Artificial Intelligence Graduate School Program (Hanyang University)) and the research fund of Hanyang University (HY202100000320007). | en_US |
dc.language | en | en_US |
dc.publisher | Elsevier B.V. | en_US |
dc.subject | Electrochemical tuning | en_US |
dc.subject | Nickel silicide nanowire | en_US |
dc.subject | Bifunctional electrocatalyst | en_US |
dc.subject | Self-adaptive evolution | en_US |
dc.subject | Water splitting | en_US |
dc.title | Self-adaptive evolution of nickel silicide nanowires for the enhancement of bifunctional electrocatalytic activities | en_US |
dc.type | Article | en_US |
dc.relation.volume | 434 | - |
dc.identifier.doi | 10.1016/j.cej.2022.134668 | en_US |
dc.relation.page | 1-9 | - |
dc.relation.journal | Chemical Engineering Journal | - |
dc.contributor.googleauthor | Chang, Won Jun | - |
dc.contributor.googleauthor | Sim, Eun Seob | - |
dc.contributor.googleauthor | Kwon, Jiseok | - |
dc.contributor.googleauthor | Jang, Suhee | - |
dc.contributor.googleauthor | Jeong, Dae Yeop | - |
dc.contributor.googleauthor | Song, Taeseup | - |
dc.contributor.googleauthor | Oh, Nuri | - |
dc.contributor.googleauthor | Jang, Ho Won | - |
dc.contributor.googleauthor | Chung, Yong-Chae | - |
dc.contributor.googleauthor | Park, Won Il | - |
dc.sector.campus | S | - |
dc.sector.daehak | 공과대학 | - |
dc.sector.department | 신소재공학부 | - |
dc.identifier.pid | wipark | - |
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