Near-complete charge separation in tailored BiVO4-based heterostructure photoanodes toward artificial leaf

Jin Wook Yang; Ik Jae Park; Sol A. Lee; Mi Gyoung Lee; Tae Hyung Lee; Hoonkee Park; Changyeon Kim; Jaemin Park; Jooho Moon; Jin Young Kim; Ho Won Jang

doi:10.1016/j.apcatb.2021.120217

Near-complete charge separation in tailored BiVO₄-based heterostructure photoanodes toward artificial leaf

Jin Wook Yang, Ik Jae Park, Sol A. Lee, Mi Gyoung Lee, Tae Hyung Lee, Hoonkee Park, Changyeon Kim, Jaemin Park, Jooho Moon, Jin Young Kim, Ho Won Jang

Department of Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

16 Citations (Scopus)

Abstract

As an artificial leaf, a tandem device for zero-bias solar water splitting is a capable solution for practical hydrogen production. Despite a promise, poor charge transport of BiVO₄ hampers photoelectrochemical performances under front-side illumination, which is a hindrance to the tandem system. Herein, we design a new photoanode comprising nanoporous BiVO₄ and SnO₂ nanorods focused on the charge separation via structural and interfacial engineering. BiVO₄/SnO₂ photoanode exhibits not only remarkable charge separation efficiency of 97% but also, by loading NiFe as a co-catalyst for water oxidation, high photocurrent density of 5.61 mA cm⁻² at 1.23 V versus the reversible hydrogen electrode under front-side 1 sun illumination. Consequently, a tandem cell comprising NiFe/BiVO₄/SnO₂ photoanode and perovskite/Si tandem solar cell generates an operating photocurrent density of 5.90 mA cm⁻² with a solar-to-hydrogen conversion efficiency of 7.3% in zero-bias. This work would be a significant step to develop spontaneous solar hydrogen production.

Original language	English
Article number	120217
Journal	Applied Catalysis B: Environmental
Volume	293
DOIs	https://doi.org/10.1016/j.apcatb.2021.120217
Publication status	Published - 2021 Sep 15

Bibliographical note

Funding Information:
This work was supported by KOREA HYDRO & NUCLEAR POWER CO., LTD. (No. 2018-Tech-21 ) and the National Research Foundation of Korea (NRF) grant funded by the Korea government Ministry of Science and ICT (MSIT) ( 2019M3E6A1103818 , 2021R1A2B5B03001851 , 2021R1C1C2006142 ). The Inter-University Semiconductor Research Center and Institute of Engineering Research at Seoul National University provided research facilities for this work.

Publisher Copyright:
© 2021 Elsevier B.V.

All Science Journal Classification (ASJC) codes

Catalysis
Environmental Science(all)
Process Chemistry and Technology

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1016/j.apcatb.2021.120217

Cite this

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title = "Near-complete charge separation in tailored BiVO4-based heterostructure photoanodes toward artificial leaf",

abstract = "As an artificial leaf, a tandem device for zero-bias solar water splitting is a capable solution for practical hydrogen production. Despite a promise, poor charge transport of BiVO4 hampers photoelectrochemical performances under front-side illumination, which is a hindrance to the tandem system. Herein, we design a new photoanode comprising nanoporous BiVO4 and SnO2 nanorods focused on the charge separation via structural and interfacial engineering. BiVO4/SnO2 photoanode exhibits not only remarkable charge separation efficiency of 97% but also, by loading NiFe as a co-catalyst for water oxidation, high photocurrent density of 5.61 mA cm−2 at 1.23 V versus the reversible hydrogen electrode under front-side 1 sun illumination. Consequently, a tandem cell comprising NiFe/BiVO4/SnO2 photoanode and perovskite/Si tandem solar cell generates an operating photocurrent density of 5.90 mA cm−2 with a solar-to-hydrogen conversion efficiency of 7.3% in zero-bias. This work would be a significant step to develop spontaneous solar hydrogen production.",

author = "Yang, {Jin Wook} and Park, {Ik Jae} and Lee, {Sol A.} and Lee, {Mi Gyoung} and Lee, {Tae Hyung} and Hoonkee Park and Changyeon Kim and Jaemin Park and Jooho Moon and Kim, {Jin Young} and Jang, {Ho Won}",

note = "Funding Information: This work was supported by KOREA HYDRO & NUCLEAR POWER CO., LTD. (No. 2018-Tech-21 ) and the National Research Foundation of Korea (NRF) grant funded by the Korea government Ministry of Science and ICT (MSIT) ( 2019M3E6A1103818 , 2021R1A2B5B03001851 , 2021R1C1C2006142 ). The Inter-University Semiconductor Research Center and Institute of Engineering Research at Seoul National University provided research facilities for this work. Publisher Copyright: {\textcopyright} 2021 Elsevier B.V.",

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doi = "10.1016/j.apcatb.2021.120217",

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journal = "Applied Catalysis B: Environmental",

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T1 - Near-complete charge separation in tailored BiVO4-based heterostructure photoanodes toward artificial leaf

AU - Yang, Jin Wook

AU - Park, Ik Jae

AU - Lee, Sol A.

AU - Lee, Mi Gyoung

AU - Lee, Tae Hyung

AU - Park, Hoonkee

AU - Kim, Changyeon

AU - Park, Jaemin

AU - Moon, Jooho

AU - Kim, Jin Young

AU - Jang, Ho Won

N1 - Funding Information: This work was supported by KOREA HYDRO & NUCLEAR POWER CO., LTD. (No. 2018-Tech-21 ) and the National Research Foundation of Korea (NRF) grant funded by the Korea government Ministry of Science and ICT (MSIT) ( 2019M3E6A1103818 , 2021R1A2B5B03001851 , 2021R1C1C2006142 ). The Inter-University Semiconductor Research Center and Institute of Engineering Research at Seoul National University provided research facilities for this work. Publisher Copyright: © 2021 Elsevier B.V.

PY - 2021/9/15

Y1 - 2021/9/15

N2 - As an artificial leaf, a tandem device for zero-bias solar water splitting is a capable solution for practical hydrogen production. Despite a promise, poor charge transport of BiVO4 hampers photoelectrochemical performances under front-side illumination, which is a hindrance to the tandem system. Herein, we design a new photoanode comprising nanoporous BiVO4 and SnO2 nanorods focused on the charge separation via structural and interfacial engineering. BiVO4/SnO2 photoanode exhibits not only remarkable charge separation efficiency of 97% but also, by loading NiFe as a co-catalyst for water oxidation, high photocurrent density of 5.61 mA cm−2 at 1.23 V versus the reversible hydrogen electrode under front-side 1 sun illumination. Consequently, a tandem cell comprising NiFe/BiVO4/SnO2 photoanode and perovskite/Si tandem solar cell generates an operating photocurrent density of 5.90 mA cm−2 with a solar-to-hydrogen conversion efficiency of 7.3% in zero-bias. This work would be a significant step to develop spontaneous solar hydrogen production.

AB - As an artificial leaf, a tandem device for zero-bias solar water splitting is a capable solution for practical hydrogen production. Despite a promise, poor charge transport of BiVO4 hampers photoelectrochemical performances under front-side illumination, which is a hindrance to the tandem system. Herein, we design a new photoanode comprising nanoporous BiVO4 and SnO2 nanorods focused on the charge separation via structural and interfacial engineering. BiVO4/SnO2 photoanode exhibits not only remarkable charge separation efficiency of 97% but also, by loading NiFe as a co-catalyst for water oxidation, high photocurrent density of 5.61 mA cm−2 at 1.23 V versus the reversible hydrogen electrode under front-side 1 sun illumination. Consequently, a tandem cell comprising NiFe/BiVO4/SnO2 photoanode and perovskite/Si tandem solar cell generates an operating photocurrent density of 5.90 mA cm−2 with a solar-to-hydrogen conversion efficiency of 7.3% in zero-bias. This work would be a significant step to develop spontaneous solar hydrogen production.

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