10% Efficient Solar‐to‐Hydrogen Conversion via Ternary‐Phase Organic Light Absorbers With Ni Heazlewoodite Electrocatalysts
ABSTRACT The realization of practical solar hydrogen production relies on the development of efficient devices with nontoxic and low‐cost materials. Since the predominant contributors for the performance and cost are the catalyst and the light absorber, it is imperative to develop cost‐effective cat...
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2025-06-01
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| Online Access: | https://doi.org/10.1002/cey2.706 |
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| author | Jaemin Park Jin Hyeong Rhee Youngeun Kim Min Jae Kim Junbeom Park Sunil V. Barma Jun Ho Seok Sang Uck Lee Eul‐Yong Shin Dong Su Kim Hyung Koun Cho Jin Young Kim Sae Byeok Jo Hae Jung Son Wooseok Yang |
| author_facet | Jaemin Park Jin Hyeong Rhee Youngeun Kim Min Jae Kim Junbeom Park Sunil V. Barma Jun Ho Seok Sang Uck Lee Eul‐Yong Shin Dong Su Kim Hyung Koun Cho Jin Young Kim Sae Byeok Jo Hae Jung Son Wooseok Yang |
| author_sort | Jaemin Park |
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| description | ABSTRACT The realization of practical solar hydrogen production relies on the development of efficient devices with nontoxic and low‐cost materials. Since the predominant contributors for the performance and cost are the catalyst and the light absorber, it is imperative to develop cost‐effective catalysts and absorbers that are compatible with each other for achieving high performance. In this study, a 10% efficient solar‐to‐hydrogen conversion device was developed through the meticulous integration of low‐cost Ni Heazlewoodite‐based catalysts for the hydrogen evolution reaction (HER) and ternary bulk heterojunction organic semiconductor (OS)‐based light absorbers. Se‐incorporated Ni3S2 was synthesized using a simple one‐step hydrothermal method, which demonstrated a low overpotential and Tafel slope, indicating superior HER activity compared to Ni₃S₂. The theoretical calculation results validate the enhanced HER performance of the Se‐incorporated Ni₃S₂ catalyst in alkaline electrolytes. The ternary phase organic light absorber is designed to generate tailored photovoltage and maximized photocurrent, resulting in a photocurrent density of 8.24 mA cm−2 under unbiased conditions, which corresponds to 10% solar to hydrogen conversion. Low‐temperature photoluminescence spectroscopy results revealed that the enhanced photocurrent density originates from a reduction in both phonon‐ and vibration‐induced inter‐ and intramolecular non‐radiative decay. Our results establish a new benchmark for the emerging OS‐based efficient solar hydrogen production based on nontoxic and cost‐effective materials. |
| format | Article |
| id | doaj-art-b51c9f4f52b54219bdd579de2f9dce2b |
| institution | Matheson Library |
| issn | 2637-9368 |
| language | English |
| publishDate | 2025-06-01 |
| publisher | Wiley |
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| series | Carbon Energy |
| spelling | doaj-art-b51c9f4f52b54219bdd579de2f9dce2b2025-06-30T09:07:03ZengWileyCarbon Energy2637-93682025-06-0176n/an/a10.1002/cey2.70610% Efficient Solar‐to‐Hydrogen Conversion via Ternary‐Phase Organic Light Absorbers With Ni Heazlewoodite ElectrocatalystsJaemin Park0Jin Hyeong Rhee1Youngeun Kim2Min Jae Kim3Junbeom Park4Sunil V. Barma5Jun Ho Seok6Sang Uck Lee7Eul‐Yong Shin8Dong Su Kim9Hyung Koun Cho10Jin Young Kim11Sae Byeok Jo12Hae Jung Son13Wooseok Yang14School of Chemical Engineering Sungkyunkwan University (SKKU) Suwon Republic of KoreaAdvanced Photovoltaics Research Center, Korea Institute of Science and Technology (KIST) Seoul Republic of KoreaDepartment of Future Energy Engineering (DFEE) Sungkyunkwan University (SKKU) Suwon Republic of KoreaSchool of Chemical Engineering Sungkyunkwan University (SKKU) Suwon Republic of KoreaSchool of Chemical Engineering Sungkyunkwan University (SKKU) Suwon Republic of KoreaSchool of Chemical Engineering Sungkyunkwan University (SKKU) Suwon Republic of KoreaSchool of Chemical Engineering Sungkyunkwan University (SKKU) Suwon Republic of KoreaSchool of Chemical Engineering Sungkyunkwan University (SKKU) Suwon Republic of KoreaAdvanced Photovoltaics Research Center, Korea Institute of Science and Technology (KIST) Seoul Republic of KoreaSchool of Advanced Materials Science and Engineering Sungkyunkwan University (SKKU) Suwon Republic of KoreaSchool of Advanced Materials Science and Engineering Sungkyunkwan University (SKKU) Suwon Republic of KoreaHydrogen·Fuel Cell Research Center, Korea Institute of Science and Technology (KIST) Seoul Republic of KoreaSchool of Chemical Engineering Sungkyunkwan University (SKKU) Suwon Republic of KoreaAdvanced Photovoltaics Research Center, Korea Institute of Science and Technology (KIST) Seoul Republic of KoreaSchool of Chemical Engineering Sungkyunkwan University (SKKU) Suwon Republic of KoreaABSTRACT The realization of practical solar hydrogen production relies on the development of efficient devices with nontoxic and low‐cost materials. Since the predominant contributors for the performance and cost are the catalyst and the light absorber, it is imperative to develop cost‐effective catalysts and absorbers that are compatible with each other for achieving high performance. In this study, a 10% efficient solar‐to‐hydrogen conversion device was developed through the meticulous integration of low‐cost Ni Heazlewoodite‐based catalysts for the hydrogen evolution reaction (HER) and ternary bulk heterojunction organic semiconductor (OS)‐based light absorbers. Se‐incorporated Ni3S2 was synthesized using a simple one‐step hydrothermal method, which demonstrated a low overpotential and Tafel slope, indicating superior HER activity compared to Ni₃S₂. The theoretical calculation results validate the enhanced HER performance of the Se‐incorporated Ni₃S₂ catalyst in alkaline electrolytes. The ternary phase organic light absorber is designed to generate tailored photovoltage and maximized photocurrent, resulting in a photocurrent density of 8.24 mA cm−2 under unbiased conditions, which corresponds to 10% solar to hydrogen conversion. Low‐temperature photoluminescence spectroscopy results revealed that the enhanced photocurrent density originates from a reduction in both phonon‐ and vibration‐induced inter‐ and intramolecular non‐radiative decay. Our results establish a new benchmark for the emerging OS‐based efficient solar hydrogen production based on nontoxic and cost‐effective materials.https://doi.org/10.1002/cey2.706electrocatalysthydrogennickel sulfideorganic semiconductorphotoelectrochemical water splitting |
| spellingShingle | Jaemin Park Jin Hyeong Rhee Youngeun Kim Min Jae Kim Junbeom Park Sunil V. Barma Jun Ho Seok Sang Uck Lee Eul‐Yong Shin Dong Su Kim Hyung Koun Cho Jin Young Kim Sae Byeok Jo Hae Jung Son Wooseok Yang 10% Efficient Solar‐to‐Hydrogen Conversion via Ternary‐Phase Organic Light Absorbers With Ni Heazlewoodite Electrocatalysts Carbon Energy electrocatalyst hydrogen nickel sulfide organic semiconductor photoelectrochemical water splitting |
| title | 10% Efficient Solar‐to‐Hydrogen Conversion via Ternary‐Phase Organic Light Absorbers With Ni Heazlewoodite Electrocatalysts |
| title_full | 10% Efficient Solar‐to‐Hydrogen Conversion via Ternary‐Phase Organic Light Absorbers With Ni Heazlewoodite Electrocatalysts |
| title_fullStr | 10% Efficient Solar‐to‐Hydrogen Conversion via Ternary‐Phase Organic Light Absorbers With Ni Heazlewoodite Electrocatalysts |
| title_full_unstemmed | 10% Efficient Solar‐to‐Hydrogen Conversion via Ternary‐Phase Organic Light Absorbers With Ni Heazlewoodite Electrocatalysts |
| title_short | 10% Efficient Solar‐to‐Hydrogen Conversion via Ternary‐Phase Organic Light Absorbers With Ni Heazlewoodite Electrocatalysts |
| title_sort | 10 efficient solar to hydrogen conversion via ternary phase organic light absorbers with ni heazlewoodite electrocatalysts |
| topic | electrocatalyst hydrogen nickel sulfide organic semiconductor photoelectrochemical water splitting |
| url | https://doi.org/10.1002/cey2.706 |
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