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Common-Ion Effect Triggered Highly Sustained Seawater Electrolysis with Additional NaCl Production
Developing efficient seawater-electrolysis system for mass production of hydrogen is highly desirable due to the abundance of seawater. However, continuous electrolysis with seawater feeding boosts the concentration of sodium chloride in the electrolyzer, leading to severe electrode corrosion and ch...
Autores principales: | , , , , , , , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
AAAS
2020
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7532522/ https://www.ncbi.nlm.nih.gov/pubmed/33043295 http://dx.doi.org/10.34133/2020/2872141 |
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author | Li, Pengsong Wang, Shiyuan Samo, Imran Ahmed Zhang, Xingheng Wang, Zhaolei Wang, Cheng Li, Yang Du, Yiyun Zhong, Yang Cheng, Congtian Xu, Wenwen Liu, Xijun Kuang, Yun Lu, Zhiyi Sun, Xiaoming |
author_facet | Li, Pengsong Wang, Shiyuan Samo, Imran Ahmed Zhang, Xingheng Wang, Zhaolei Wang, Cheng Li, Yang Du, Yiyun Zhong, Yang Cheng, Congtian Xu, Wenwen Liu, Xijun Kuang, Yun Lu, Zhiyi Sun, Xiaoming |
author_sort | Li, Pengsong |
collection | PubMed |
description | Developing efficient seawater-electrolysis system for mass production of hydrogen is highly desirable due to the abundance of seawater. However, continuous electrolysis with seawater feeding boosts the concentration of sodium chloride in the electrolyzer, leading to severe electrode corrosion and chlorine evolution. Herein, the common-ion effect was utilized into the electrolyzer to depress the solubility of NaCl. Specifically, utilization of 6 M NaOH halved the solubility of NaCl in the electrolyte, affording efficient, durable, and sustained seawater electrolysis in NaCl-saturated electrolytes with triple production of H(2), O(2), and crystalline NaCl. Ternary NiCoFe phosphide was employed as a bifunctional anode and cathode in simulative and Ca/Mg-free seawater-electrolysis systems, which could stably work under 500 mA/cm(2) for over 100 h. We attribute the high stability to the increased Na(+) concentration, which reduces the concentration of dissolved Cl(−) in the electrolyte according to the common-ion effect, resulting in crystallization of NaCl, eliminated anode corrosion, and chlorine oxidation during continuous supplementation of Ca/Mg-free seawater to the electrolysis system. |
format | Online Article Text |
id | pubmed-7532522 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | AAAS |
record_format | MEDLINE/PubMed |
spelling | pubmed-75325222020-10-09 Common-Ion Effect Triggered Highly Sustained Seawater Electrolysis with Additional NaCl Production Li, Pengsong Wang, Shiyuan Samo, Imran Ahmed Zhang, Xingheng Wang, Zhaolei Wang, Cheng Li, Yang Du, Yiyun Zhong, Yang Cheng, Congtian Xu, Wenwen Liu, Xijun Kuang, Yun Lu, Zhiyi Sun, Xiaoming Research (Wash D C) Research Article Developing efficient seawater-electrolysis system for mass production of hydrogen is highly desirable due to the abundance of seawater. However, continuous electrolysis with seawater feeding boosts the concentration of sodium chloride in the electrolyzer, leading to severe electrode corrosion and chlorine evolution. Herein, the common-ion effect was utilized into the electrolyzer to depress the solubility of NaCl. Specifically, utilization of 6 M NaOH halved the solubility of NaCl in the electrolyte, affording efficient, durable, and sustained seawater electrolysis in NaCl-saturated electrolytes with triple production of H(2), O(2), and crystalline NaCl. Ternary NiCoFe phosphide was employed as a bifunctional anode and cathode in simulative and Ca/Mg-free seawater-electrolysis systems, which could stably work under 500 mA/cm(2) for over 100 h. We attribute the high stability to the increased Na(+) concentration, which reduces the concentration of dissolved Cl(−) in the electrolyte according to the common-ion effect, resulting in crystallization of NaCl, eliminated anode corrosion, and chlorine oxidation during continuous supplementation of Ca/Mg-free seawater to the electrolysis system. AAAS 2020-09-24 /pmc/articles/PMC7532522/ /pubmed/33043295 http://dx.doi.org/10.34133/2020/2872141 Text en Copyright © 2020 Pengsong Li et al. https://creativecommons.org/licenses/by/4.0/ Exclusive Licensee Science and Technology Review Publishing House. Distributed under a Creative Commons Attribution License (CC BY 4.0). |
spellingShingle | Research Article Li, Pengsong Wang, Shiyuan Samo, Imran Ahmed Zhang, Xingheng Wang, Zhaolei Wang, Cheng Li, Yang Du, Yiyun Zhong, Yang Cheng, Congtian Xu, Wenwen Liu, Xijun Kuang, Yun Lu, Zhiyi Sun, Xiaoming Common-Ion Effect Triggered Highly Sustained Seawater Electrolysis with Additional NaCl Production |
title | Common-Ion Effect Triggered Highly Sustained Seawater Electrolysis with Additional NaCl Production |
title_full | Common-Ion Effect Triggered Highly Sustained Seawater Electrolysis with Additional NaCl Production |
title_fullStr | Common-Ion Effect Triggered Highly Sustained Seawater Electrolysis with Additional NaCl Production |
title_full_unstemmed | Common-Ion Effect Triggered Highly Sustained Seawater Electrolysis with Additional NaCl Production |
title_short | Common-Ion Effect Triggered Highly Sustained Seawater Electrolysis with Additional NaCl Production |
title_sort | common-ion effect triggered highly sustained seawater electrolysis with additional nacl production |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7532522/ https://www.ncbi.nlm.nih.gov/pubmed/33043295 http://dx.doi.org/10.34133/2020/2872141 |
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