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Coating of Phosphid...
Coating of Phosphide Catalysts on p-Silicon by a Necking Strategy for Improved Photoelectrochemical Characteristics in Alkaline Media
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- Li, Feng (author)
- Shanghai Jiao Tong Univ, Sch Mat Sci & Engn, Shanghai 200240, Peoples R China.
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- Yuan, Yanqi (author)
- Shanghai Jiao Tong Univ, Sch Mat Sci & Engn, Shanghai 200240, Peoples R China.
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- Feng, Xiaoqian (author)
- Liaoning Univ Technol, Sch Chem & Environm Engn, Jinzhou 121001, Liaoning, Peoples R China.
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- Liu, Jing (author)
- Shanghai Jiao Tong Univ, Sch Mat Sci & Engn, Shanghai 200240, Peoples R China.
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- Chen, Sheng (author)
- Shanghai Huali Intergrated Circuit Corp, Shanghai 201314, Peoples R China.
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- Lin, Yue (author)
- Univ Cambridge, Cavendish Lab, Cambridge CB3 0HE, England.
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- Sun, Yanting (author)
- KTH,Fotonik
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- Chen, Han (author)
- Shanghai Jiao Tong Univ, Sch Mat Sci & Engn, Shanghai 200240, Peoples R China.
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- Zhao, Liping (author)
- Shanghai Jiao Tong Univ, Sch Mat Sci & Engn, Shanghai 200240, Peoples R China.
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- Song, Xuefeng (author)
- Shanghai Jiao Tong Univ, Sch Mat Sci & Engn, Shanghai 200240, Peoples R China.
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- Zhang, Peng (author)
- Shanghai Jiao Tong Univ, Sch Mat Sci & Engn, Shanghai 200240, Peoples R China.
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- Gao, Lian (author)
- Shanghai Jiao Tong Univ, Sch Mat Sci & Engn, Shanghai 200240, Peoples R China.
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Shanghai Jiao Tong Univ, Sch Mat Sci & Engn, Shanghai 200240, Peoples R China Liaoning Univ Technol, Sch Chem & Environm Engn, Jinzhou 121001, Liaoning, Peoples R China. (creator_code:org_t)
- 2021-04-21
- 2021
- English.
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In: ACS Applied Materials and Interfaces. - : American Chemical Society (ACS). - 1944-8244 .- 1944-8252. ; 13:17, s. 20185-20193
- Related links:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Subject headings
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- The methodology of coating electrocatalysts on semiconductor substrates is critical for the catalytic performance of photoelectrochemical electrodes. A weakly bound coating leads to orders of magnitude lower efficiency and reliability compared to those required to meet the commercial demand. Herein, a facile strategy based on the hydrolysis of TiCl4 is developed to solve the coating issue. Mesoporous tungsten phosphide (WP) particles were spin-coated and affixed onto TiO2-protected planar p-Si by the formation of a TiO2 necking layer between the catalyst particles and the substrates. Under 1 sun illumination, the as-prepared WP/TiO2/Si photocathode yields a saturated current density of -35 mA cm(-2) and a durability of over 110 h with a current density over -15 mA cm(-2) at 0 V versus a reversible hydrogen electrode in a 1.0 M KOH solution, which is among the state-of-the-art performances of commercial planar Si-based photocathodes. The Kelvin probe force microscopy results suggest the successive transfer of photoelectrons from Si to TiO2 and WP. The as-formed TiO2 necking layer plays the key role in ensuring the surface catalytic activity and durability. This necking strategy is also applicable for coating other transition-metal phosphides, for example, MoP and FeP, thus offering a practical approach to meet the commercial requirement of low-cost, highly efficient, and durable photoelectrodes.
Subject headings
- NATURVETENSKAP -- Kemi -- Materialkemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Materials Chemistry (hsv//eng)
Keyword
- photoelectrocatalysis
- coating strategy
- necking layer
- transition-metal phosphide
Publication and Content Type
- ref (subject category)
- art (subject category)
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- By the author/editor
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Li, Feng
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Yuan, Yanqi
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Feng, Xiaoqian
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Liu, Jing
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Chen, Sheng
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Lin, Yue
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show more...
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Sun, Yanting
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Chen, Han
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Zhao, Liping
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Song, Xuefeng
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Zhang, Peng
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Gao, Lian
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- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Chemical Science ...
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and Materials Chemis ...
- Articles in the publication
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ACS Applied Mate ...
- By the university
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Royal Institute of Technology