Hokkaido University · 에너지
Palyam Subramanyam 교수의 연구실은 광전기화학적 수소 생산을 위한 고효율 광전극 개발에 초점을 맞추고 있습니다. 주로 티타니아, 비ism루이드, 페로브스카이트 등 다양한 반도체 나노소재를 활용해 광흡수 능력 향상, 전하 분리 효율 증대 및 전도성 향상을 도모합니다. 특히, 나노복합체 및 표면 플라즈몬 촉매를 활용한 광전극 설계를 통해 태양광을 효율적으로 수소 연료로 변환하는 기술을 연구하고 있습니다. 지속 가능한 에너지 기술의 핵심인 태양광 수소 생산의 실용화를 목표로 하고 있습니다.
표시된 성과는 수집된 데이터 기준으로 산출되며, 일부 차이가 있을 수 있습니다.
Semiconducting photoelectrodes emerge as an efficient platform for converting light energy into hydrogen by photoelectrochemical (PEC) water splitting. The present study reports the improvement in PEC performance using metal oxide photoelectrodes sensitized with a narrow-band-gap semiconductor Bi2Se3, which extends the light response beyond the visible region and generates and transports charge carriers. When Bi2Se3 nanoflowers (NFs) were incorporated into the TiO2 electrode, the extent of hydro
The design of photo-electrodes with good light absorption, effective photo-generated charge carrier separation and fast charge transportation are key parameters for photoelectrochemical (PEC) hydrogen generation.
Visible-light-active photoelectrodes are more responsive to high-energy conversion efficiency in photoelectrochemical (PEC) water splitting. In this work, we fabricated a bismuth sulfide@reduced graphene oxide (Bi2S3@rGO) nanocomposite photoanode via facile synthetic methods. Typical results show that the Bi2S3@rGO nanocomposite exhibited a high photocurrent density of 6.06 mA cm–2 and a maximum applied bias photon-to-current efficiency (ABPE) of 4.2% at 0.32 V. Moreover, Bi2S3 nanorods have mor
Hydrogen has tremendous potential as a sustainable energy source for the future. Unassisted photoelectrochemical water splitting is a promising approach to producing hydrogen fuel from sunlight and water. To economically produce hydrogen, efficient, low-cost, environmentally friendly, and long-term stable photocathodes and photoanodes are needed. In this study, we have fabricated CuBi2O4 (CBO) photocathodes using drop-casting, hydrothermal, and electrodeposition methods. The resulting photocatho
A wide range of technologies has been developed for producing hydrogen economically and in greener ways. Photoelectrochemical water splitting using photoelectrodes submerged in a bath electrolyte forms a major route of hydrogen evolution. The efficacy of water splitting is improved by sensitizing metal oxide photoelectrodes with narrow bandgap semiconductors that efficiently absorb sunlight and generate and transport charge carriers. Here we show that the efficiencies of photocurrent generation
Bandgap-engineered inorganic and hybrid halide perovskite (HP) films, nanocrystals, and quantum dots (PQDs) are promising for solar cells. Fluctuations of photoinduced electron transfer (PET) rates affect the interfacial charge separation efficiencies of such solar cells. Electron donor- or acceptor-doped perovskite samples help analyze PET and harvest photogenerated charge carriers efficiently. Therefore, PET in perovskite-based donor-acceptor (D-A) systems has received considerable attention.
