Selective Electrochemical Reduction of Nitrogen to Ammonia by Adjusting the Three-Phase Interface

Selective Electrochemical Reduction of Nitrogen to Ammonia by Adjusting the Three-Phase Interface

The electrochemical nitrogen reduction reaction (NRR) provides a sustainable and alternative avenue to the Haber-Bosch process for ammonia (NH3) synthesis. Despite the great efforts made on catalysts and electrolytes, unfortunately, current NRR suffers from low selectivity due to the overwhelming co...

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Main Authors: Haiyan Wang, Yuzhuo Chen, Ruxue Fan, Jiadong Chen, Zhe Wang, Shanjun Mao, Yong Wang
Format: Article
Language:English
Published: American Association for the Advancement of Science 2019-01-01
Series:Research
Online Access:http://dx.doi.org/10.34133/2019/1401209
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spelling doaj-5d0e8ae6dcaf4e3cb0b758bd6020d7452020-11-25T00:11:16ZengAmerican Association for the Advancement of ScienceResearch2639-52742019-01-01201910.34133/2019/1401209Selective Electrochemical Reduction of Nitrogen to Ammonia by Adjusting the Three-Phase InterfaceHaiyan Wang0Yuzhuo Chen1Ruxue Fan2Jiadong Chen3Zhe Wang4Shanjun Mao5Yong Wang6Advanced Materials and Catalysis Group,Institute of Catalysis,Department of Chemistry,Zhejiang University, Hangzhou 310028,ChinaAdvanced Materials and Catalysis Group,Institute of Catalysis,Department of Chemistry,Zhejiang University, Hangzhou 310028,ChinaAdvanced Materials and Catalysis Group,Institute of Catalysis,Department of Chemistry,Zhejiang University, Hangzhou 310028,ChinaAdvanced Materials and Catalysis Group,Institute of Catalysis,Department of Chemistry,Zhejiang University, Hangzhou 310028,ChinaAdvanced Materials and Catalysis Group,Institute of Catalysis,Department of Chemistry,Zhejiang University, Hangzhou 310028,ChinaAdvanced Materials and Catalysis Group,Institute of Catalysis,Department of Chemistry,Zhejiang University, Hangzhou 310028,ChinaAdvanced Materials and Catalysis Group,Institute of Catalysis,Department of Chemistry,Zhejiang University, Hangzhou 310028,ChinaThe electrochemical nitrogen reduction reaction (NRR) provides a sustainable and alternative avenue to the Haber-Bosch process for ammonia (NH3) synthesis. Despite the great efforts made on catalysts and electrolytes, unfortunately, current NRR suffers from low selectivity due to the overwhelming competition with the hydrogen evolution reaction (HER). Here, we present an adjusted three-phase interface to enhance nitrogen (N2) coverage on a catalyst surface and achieve a record-high Faradic efficiency (FE) up to 97% in aqueous solution. The almost entirely suppressed HER process combined with the enhanced NRR activity, benefiting from the efficient three-interface contact line, is responsible for the excellent selectivity toward NH3, as evidenced by the theoretical and experimental results. Our strategy also demonstrates the applicability to other catalysts that feature strong H adsorption ability, to boost the FE for NH3 synthesis above 90% and to improve the NRR activity by engineering the catalysts.http://dx.doi.org/10.34133/2019/1401209
collection DOAJ
language English
format Article
sources DOAJ
author Haiyan Wang
Yuzhuo Chen
Ruxue Fan
Jiadong Chen
Zhe Wang
Shanjun Mao
Yong Wang
spellingShingle Haiyan Wang
Yuzhuo Chen
Ruxue Fan
Jiadong Chen
Zhe Wang
Shanjun Mao
Yong Wang
Selective Electrochemical Reduction of Nitrogen to Ammonia by Adjusting the Three-Phase Interface
Research
author_facet Haiyan Wang
Yuzhuo Chen
Ruxue Fan
Jiadong Chen
Zhe Wang
Shanjun Mao
Yong Wang
author_sort Haiyan Wang
title Selective Electrochemical Reduction of Nitrogen to Ammonia by Adjusting the Three-Phase Interface
title_short Selective Electrochemical Reduction of Nitrogen to Ammonia by Adjusting the Three-Phase Interface
title_full Selective Electrochemical Reduction of Nitrogen to Ammonia by Adjusting the Three-Phase Interface
title_fullStr Selective Electrochemical Reduction of Nitrogen to Ammonia by Adjusting the Three-Phase Interface
title_full_unstemmed Selective Electrochemical Reduction of Nitrogen to Ammonia by Adjusting the Three-Phase Interface
title_sort selective electrochemical reduction of nitrogen to ammonia by adjusting the three-phase interface
publisher American Association for the Advancement of Science
series Research
issn 2639-5274
publishDate 2019-01-01
description The electrochemical nitrogen reduction reaction (NRR) provides a sustainable and alternative avenue to the Haber-Bosch process for ammonia (NH3) synthesis. Despite the great efforts made on catalysts and electrolytes, unfortunately, current NRR suffers from low selectivity due to the overwhelming competition with the hydrogen evolution reaction (HER). Here, we present an adjusted three-phase interface to enhance nitrogen (N2) coverage on a catalyst surface and achieve a record-high Faradic efficiency (FE) up to 97% in aqueous solution. The almost entirely suppressed HER process combined with the enhanced NRR activity, benefiting from the efficient three-interface contact line, is responsible for the excellent selectivity toward NH3, as evidenced by the theoretical and experimental results. Our strategy also demonstrates the applicability to other catalysts that feature strong H adsorption ability, to boost the FE for NH3 synthesis above 90% and to improve the NRR activity by engineering the catalysts.
url http://dx.doi.org/10.34133/2019/1401209
work_keys_str_mv AT haiyanwang selectiveelectrochemicalreductionofnitrogentoammoniabyadjustingthethreephaseinterface
AT yuzhuochen selectiveelectrochemicalreductionofnitrogentoammoniabyadjustingthethreephaseinterface
AT ruxuefan selectiveelectrochemicalreductionofnitrogentoammoniabyadjustingthethreephaseinterface
AT jiadongchen selectiveelectrochemicalreductionofnitrogentoammoniabyadjustingthethreephaseinterface
AT zhewang selectiveelectrochemicalreductionofnitrogentoammoniabyadjustingthethreephaseinterface
AT shanjunmao selectiveelectrochemicalreductionofnitrogentoammoniabyadjustingthethreephaseinterface
AT yongwang selectiveelectrochemicalreductionofnitrogentoammoniabyadjustingthethreephaseinterface
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