Morphology–Property Effect in Electrocatalysis Based on Ni<sub>1-χ</sub>Se@Graphene Series with Specific Stoichiometric Ratio

W2238879586 · 수집 2026-10-04 18:12:22

T10030 Electrocatalysts for Energy Conversion

CoT 라벨링

라벨링 전

PDF 파일

저장된 PDF 없음

기본 정보

DOI 제목 발행년도 저널 URL 페이지 열기 PDF URL PDF 열기 발행기관 피인용수 라이선스

추가 정보 초록

Due to their special role in surface atoms, charge transfer channels and catalytic active sites, morphologies of electrocatalysts produce morphology–property effects in electrocatalysis. To study this effect, a series of specific stoichiometric ratios of nickel and selenium, Ni1-χSe, with different surface atom concentrations and morphologies, were synthesized on graphene via several thermal-reduction methods. In addition, we systematically investigated the morphology–property effect of a Ni1-χSe series based on electrochemical impedance spectra (EIS), cyclic voltammetry (CV), and Tafel polarization experiments. The Ni1-χSe nanoparticles demonstrated superior performance in electrocatalysis than that of Ni1-χSe nanoplates. After nanoplates were assembled to form nanospheres, Ni1-χSe nanospheres exhibited higher catalytic activity in terms of reducing I3− and multiple times faster charge-transfer velocities than those of Ni1-χSe nanoplates. Synthetically electrocatalytic properties of Ni1-χSe series were also measured as counter cells (CEs) of dye-sensitized solar cells (DSSCs). Ni1-χSe nanoparticles showed a higher power conversion efficiency (PCE) (7.33%) in a DSSC cell than when using a Pt CE (7.02%). The performance of Ni1-χSe nanoplates (6.57%) was worse than that of Ni1-χSe nanoparticles and Pt CEs. Simultaneously the self-assembled Ni1-χSe nanospheres (7.37%) exhibited PCE similar to that found with Ni1-χSe nanoparticles.

본문

PDF 본문 자동 추출 실패: [download] not a PDF (Content-Type: text/html, final URL: https://validate.perfdrive.com/fb803c746e9148689b3984a31fccd902/?ssa=7681b199-1592-4070-970c-bc4614667d70&ssb=84878257895&ssc=https%3A%2F%2Fiopscience.iop.org%2Farticle%2F10.1149%2F2.0181510jes%2Fpdf&ssi=2bfb6c4c-cnvj-4e10-acdf-4f3bd3871ab3&ssk=botmanager_support@radware.com&ssm=609915350951548406910820318746381&ssn=d910a68381552c41214f9abce861456169bc0365ea35-1dfa-4a77-911cb7&sso=04063f5b-51d081f0c9292abd458e38274e0a62f08de528904a28f6b5&ssp=99105729741791199573179114018617301&ssq=81810042500878428698110984915958380295205&ssr=MjExLjE4OC41NS4xMTY=&sst=Mozilla/5.0%20(X11;%20Linux%20x86_64)%20AppleWebKit/537.36%20(KHTML,%20like%20Gecko)%20Chrome/126.0%20Safari/537.36%20ai4s-collector/1.0&ssu=&ssv=&ssw=&ssx=eyJfX3V6bWYiOiI3ZjkwMDAwMzY1ZWEzNS0xZGZhLTRhNzctOWY1Yi01MWQwODFmMGM5MjkxLTE3OTExMTA5ODQ3MjAxNDAyNDAzNi0wMDUyZDI4ODQ4MWU5MzU0OWYyNjkxIiwidXpteCI6IjdmYzAwMDg5NGY1NThkLWU0OWQtNDBmOC1iMjViLTE3ZGQ3OTcyMmY3MDEtMTc5MTExMDk4NDcyMDE0MDI0M (2026-10-04 23:43:29)

활용가능성

이력 0건

아직 편집 이력이 없습니다. 저장할 때마다 이전 내용이 여기에 백업됩니다.