A Manganese-Doped Cerium-Based Metal–Organic Framework as a Radical Scavenger for Proton Exchange Membrane Fuel Cells with Superior Stability

IF 5.4 3区 材料科学 Q2 CHEMISTRY, PHYSICAL
Henghui Huang*, Zihao Zhong, Jinming Li and Hui Li*, 
{"title":"A Manganese-Doped Cerium-Based Metal–Organic Framework as a Radical Scavenger for Proton Exchange Membrane Fuel Cells with Superior Stability","authors":"Henghui Huang*,&nbsp;Zihao Zhong,&nbsp;Jinming Li and Hui Li*,&nbsp;","doi":"10.1021/acsaem.4c0150210.1021/acsaem.4c01502","DOIUrl":null,"url":null,"abstract":"<p >Reducing gas permeation through proton exchange membranes and eliminating free radicals are crucial for mitigating the degradation of proton exchange membranes. Here, a series of Mn-doped Ce metal–organic framework (MOF) materials are designed and prepared. Prepared Ce<sub>2</sub>Mn-NH<sub>2</sub>BDC can catalyze the decomposition of hydrogen oxidation and alleviate the damage caused by free radicals. Ce<sub>2</sub>Mn-NH<sub>2</sub>BDC has a special pore structure, a high specific surface area, and abundant functional groups, as well as the ability to be fixed in proton exchange membranes. The fabricated Ce<sub>2</sub>Mn-NH<sub>2</sub>BDC@PFSA membranes have excellent gas barrier properties and structural stability as well as an excellent proton conductivity, a high fuel cell performance, and low ohmic impedance. The proton conductivity can reach up to 137 mS cm<sup>–1</sup>, and the cell performance can reach 0.664 V at 2.0 A cm<sup>–2</sup>. In addition, the prepared composite membrane exhibits low weight loss and high water stability in the ex situ durability test, and it has excellent stability in the open circuit voltage (OCV) holding test; its decay rate is only 33.3 μ V h<sup>–1</sup>, which is lower than those of Ce-NH<sub>2</sub>BDC@PFSA and the Nafion 211 membrane. This work provides a promising reference value for the preparation of highly stable proton exchange membranes.</p>","PeriodicalId":4,"journal":{"name":"ACS Applied Energy Materials","volume":"7 23","pages":"10804–10814 10804–10814"},"PeriodicalIF":5.4000,"publicationDate":"2024-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"ACS Applied Energy Materials","FirstCategoryId":"88","ListUrlMain":"https://pubs.acs.org/doi/10.1021/acsaem.4c01502","RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
引用次数: 0

Abstract

Reducing gas permeation through proton exchange membranes and eliminating free radicals are crucial for mitigating the degradation of proton exchange membranes. Here, a series of Mn-doped Ce metal–organic framework (MOF) materials are designed and prepared. Prepared Ce2Mn-NH2BDC can catalyze the decomposition of hydrogen oxidation and alleviate the damage caused by free radicals. Ce2Mn-NH2BDC has a special pore structure, a high specific surface area, and abundant functional groups, as well as the ability to be fixed in proton exchange membranes. The fabricated Ce2Mn-NH2BDC@PFSA membranes have excellent gas barrier properties and structural stability as well as an excellent proton conductivity, a high fuel cell performance, and low ohmic impedance. The proton conductivity can reach up to 137 mS cm–1, and the cell performance can reach 0.664 V at 2.0 A cm–2. In addition, the prepared composite membrane exhibits low weight loss and high water stability in the ex situ durability test, and it has excellent stability in the open circuit voltage (OCV) holding test; its decay rate is only 33.3 μ V h–1, which is lower than those of Ce-NH2BDC@PFSA and the Nafion 211 membrane. This work provides a promising reference value for the preparation of highly stable proton exchange membranes.

Abstract Image

锰掺杂铈基金属有机骨架作为质子交换膜燃料电池的自由基清除剂,具有优异的稳定性
减少气体通过质子交换膜和消除自由基是减轻质子交换膜降解的关键。本文设计并制备了一系列mn掺杂Ce金属有机骨架(MOF)材料。制备的Ce2Mn-NH2BDC能够催化氢氧化分解,减轻自由基对材料的损伤。Ce2Mn-NH2BDC具有特殊的孔隙结构、较高的比表面积、丰富的官能团以及固定在质子交换膜上的能力。制造的Ce2Mn-NH2BDC@PFSA膜具有优异的气体阻隔性能和结构稳定性,以及优异的质子导电性,高燃料电池性能和低欧姆阻抗。质子电导率可达137 mS cm-1,电池性能在2.0 A cm-2时可达0.664 V。此外,制备的复合膜在迁地耐久性试验中表现出低失重和高水稳定性,在开路电压(OCV)保持试验中具有优异的稳定性;其衰变速率仅为33.3 μ V h-1,低于Ce-NH2BDC@PFSA和Nafion 211膜。本研究对制备高稳定性质子交换膜具有一定的参考价值。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
求助全文
约1分钟内获得全文 求助全文
来源期刊
ACS Applied Energy Materials
ACS Applied Energy Materials Materials Science-Materials Chemistry
CiteScore
10.30
自引率
6.20%
发文量
1368
期刊介绍: ACS Applied Energy Materials is an interdisciplinary journal publishing original research covering all aspects of materials, engineering, chemistry, physics and biology relevant to energy conversion and storage. The journal is devoted to reports of new and original experimental and theoretical research of an applied nature that integrate knowledge in the areas of materials, engineering, physics, bioscience, and chemistry into important energy applications.
文献相关原料
公司名称
产品信息
阿拉丁
manganese chloride
阿拉丁
cerium nitrate hexahydrate
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信