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Hu C, Kang NY, Kang HW, Lee JY, Zhang X, Lee YJ, Jung SW, Park JH, Kim MG, Yoo SJ, Lee SY, Park CH, Lee YM. Triptycene Branched Poly(aryl-co-aryl piperidinium) Electrolytes for Alkaline Anion Exchange Membrane Fuel Cells and Water Electrolyzers. Angew Chem Int Ed Engl 2024; 63:e202316697. [PMID: 38063325 DOI: 10.1002/anie.202316697] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2023] [Indexed: 01/10/2024]
Abstract
Alkaline polymer electrolytes (APEs) are essential materials for alkaline energy conversion devices such as anion exchange membrane fuel cells (AEMFCs) and water electrolyzers (AEMWEs). Here, we report a series of branched poly(aryl-co-aryl piperidinium) with different branching agents (triptycene: highly-rigid, three-dimensional structure; triphenylbenzene: planar, two-dimensional structure) for high-performance APEs. Among them, triptycene branched APEs showed excellent hydroxide conductivity (193.5 mS cm-1 @80 °C), alkaline stability, mechanical properties, and dimensional stability due to the formation of branched network structures, and increased free volume. AEMFCs based on triptycene-branched APEs reached promising peak power densities of 2.503 and 1.705 W cm-2 at 75/100 % and 30/30 % (anode/cathode) relative humidity, respectively. In addition, the fuel cells can run stably at a current density of 0.6 A cm-2 for 500 h with a low voltage decay rate of 46 μV h-1 . Importantly, the related AEMWE achieved unprecedented current densities of 16 A cm-2 and 14.17 A cm-2 (@2 V, 80 °C, 1 M NaOH) using precious and non-precious metal catalysts, respectively. Moreover, the AEMWE can be stably operated under 1.5 A cm-2 at 60 °C for 2000 h. The excellent results suggest that the triptycene-branched APEs are promising candidates for future AEMFC and AEMWE applications.
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Affiliation(s)
- Chuan Hu
- Department of Energy Engineering, College of Engineering, Hanyang University, Seoul, 04763, Republic of Korea
| | - Na Yoon Kang
- Department of Energy Engineering, College of Engineering, Hanyang University, Seoul, 04763, Republic of Korea
| | - Hyun Woo Kang
- Department of Energy Engineering, Gyeongsang National University, Jinju, 52725, Republic of Korea
| | - Ju Yeon Lee
- Hydrogen⋅Fuel Cell Research Center, Korea Institute of Science and Technology (KIST), Seoul, 02792, Republic of Korea
| | - Xiaohua Zhang
- Department of Energy Engineering, College of Engineering, Hanyang University, Seoul, 04763, Republic of Korea
| | - Yong Jun Lee
- Department of Energy Engineering, College of Engineering, Hanyang University, Seoul, 04763, Republic of Korea
| | - Seung Won Jung
- Department of Energy Engineering, College of Engineering, Hanyang University, Seoul, 04763, Republic of Korea
| | - Jong Hyeong Park
- Department of Energy Engineering, College of Engineering, Hanyang University, Seoul, 04763, Republic of Korea
| | - Myeong-Geun Kim
- Hydrogen⋅Fuel Cell Research Center, Korea Institute of Science and Technology (KIST), Seoul, 02792, Republic of Korea
| | - Sung Jong Yoo
- Hydrogen⋅Fuel Cell Research Center, Korea Institute of Science and Technology (KIST), Seoul, 02792, Republic of Korea
- Division of Energy & Environment Technology, KIST School, University of Science and Technology (UST), Daejeon, 34113, Republic of Korea
- KHU-KIST Department of Converging Science and Technology, Kyung Hee University, Seoul, 02447, Republic of. Korea
| | - So Young Lee
- Hydrogen⋅Fuel Cell Research Center, Korea Institute of Science and Technology (KIST), Seoul, 02792, Republic of Korea
| | - Chi Hoon Park
- Department of Energy Engineering, Gyeongsang National University, Jinju, 52725, Republic of Korea
| | - Young Moo Lee
- Department of Energy Engineering, College of Engineering, Hanyang University, Seoul, 04763, Republic of Korea
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Feng Z, Gupta G, Mamlouk M. Degradation of QPPO-based anion polymer electrolyte membrane at neutral pH. RSC Adv 2023; 13:20235-20242. [PMID: 37416914 PMCID: PMC10321057 DOI: 10.1039/d3ra02889e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2023] [Accepted: 06/29/2023] [Indexed: 07/08/2023] Open
Abstract
The chemical stability of anion polymer electrolyte membranes (AEMs) determines the durability of an AEM water electrolyzer (AEMWE). The alkaline stability of AEMs has been widely investigated in the literature. However, the degradation of AEM at neutral pH closer to the practical AEMWE operating condition is neglected, and the degradation mechanism remains unclear. This paper investigated the stability of quaternized poly(p-phenylene oxide) (QPPO)-based AEMs under different conditions, including Fenton solution, H2O2 solution and DI water. The pristine PPO and chloromethylated PPO (ClPPO) showed good chemical stability in the Fenton solution, and only limited weight loss was observed, 2.8% and 1.6%, respectively. QPPO suffered a high mass loss (29%). Besides, QPPO with higher IEC showed a higher mass loss. QPPO-1 (1.7 mmol g-1) lost nearly twice as much mass as QPPO-2 (1.3 mmol g-1). A strong correlation between the degradation rate of IEC and H2O2 concentration was obtained, which implied that the reaction order is above 1. A long-term oxidative stability test at pH neutral condition was also conducted by immersing the membrane in DI at 60 °C water for 10 months. The membrane breaks into pieces after the degradation test. The possible degradation mechanism is that oxygen or OH˙ radicals attack the methyl group on the rearranged ylide, forming aldehyde or carboxyl attached to the CH2 group.
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Affiliation(s)
- Zhiming Feng
- School of Engineering, Newcastle University Merz Court Newcastle upon Tyne NE1 7RU UK
| | - Gaurav Gupta
- Chemical Engineering, Lancaster University Lancaster LA1 4YW UK
| | - Mohamed Mamlouk
- School of Engineering, Newcastle University Merz Court Newcastle upon Tyne NE1 7RU UK
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Yang W, Yan J, Xu P, Chen J, Fang Q, Lin D, Yan Y, Zhang Q. Role of Ionic Concentration and Distribution in Anionic Conductivity: Case Study on a Series of Cobaltocenium-Containing Anion Exchange Membranes with Precise Structure Control. Macromolecules 2022. [DOI: 10.1021/acs.macromol.2c00980] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Weihong Yang
- Chongqing Technology Innovation Center, Northwestern Polytechnical University, Chongqing 401135, P. R. China
- Department of Chemistry, School of Chemistry and Chemical Engineering, Key Laboratory of Special Functional and Smart Polymer Materials of Ministry of Industry and Information Technology, Northwestern Polytechnical University, Xi’an 710129, P. R. China
| | - Jing Yan
- Chongqing Technology Innovation Center, Northwestern Polytechnical University, Chongqing 401135, P. R. China
- Department of Chemistry, School of Chemistry and Chemical Engineering, Key Laboratory of Special Functional and Smart Polymer Materials of Ministry of Industry and Information Technology, Northwestern Polytechnical University, Xi’an 710129, P. R. China
| | - Peng Xu
- Chongqing Technology Innovation Center, Northwestern Polytechnical University, Chongqing 401135, P. R. China
- Department of Chemistry, School of Chemistry and Chemical Engineering, Key Laboratory of Special Functional and Smart Polymer Materials of Ministry of Industry and Information Technology, Northwestern Polytechnical University, Xi’an 710129, P. R. China
| | - Jin Chen
- Chongqing Technology Innovation Center, Northwestern Polytechnical University, Chongqing 401135, P. R. China
- Department of Chemistry, School of Chemistry and Chemical Engineering, Key Laboratory of Special Functional and Smart Polymer Materials of Ministry of Industry and Information Technology, Northwestern Polytechnical University, Xi’an 710129, P. R. China
| | - Qianyi Fang
- Chongqing Technology Innovation Center, Northwestern Polytechnical University, Chongqing 401135, P. R. China
- Department of Chemistry, School of Chemistry and Chemical Engineering, Key Laboratory of Special Functional and Smart Polymer Materials of Ministry of Industry and Information Technology, Northwestern Polytechnical University, Xi’an 710129, P. R. China
| | - Daolei Lin
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, P. R. China
| | - Yi Yan
- Chongqing Technology Innovation Center, Northwestern Polytechnical University, Chongqing 401135, P. R. China
- Department of Chemistry, School of Chemistry and Chemical Engineering, Key Laboratory of Special Functional and Smart Polymer Materials of Ministry of Industry and Information Technology, Northwestern Polytechnical University, Xi’an 710129, P. R. China
| | - Qiuyu Zhang
- Department of Chemistry, School of Chemistry and Chemical Engineering, Key Laboratory of Special Functional and Smart Polymer Materials of Ministry of Industry and Information Technology, Northwestern Polytechnical University, Xi’an 710129, P. R. China
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Liu S, Yan J, Zhang Q, Yan Y. Acyclic Diene Metathesis (ADMET) as Powerful Tool for Functional Polymers with Versatile Architectures. J Inorg Organomet Polym Mater 2022. [DOI: 10.1007/s10904-022-02386-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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In-situ monitoring of cyclic olefin ring-opening metathesis polymerization by Raman spectroscopy: An effective tool for functional polymer and copolymer design. POLYMER 2022. [DOI: 10.1016/j.polymer.2022.124613] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Yang W, Liu S, Yan J, Zhong F, Jia N, Yan Y, Zhang Q. Metallo-Polyelectrolyte-Based Robust Anion Exchange Membranes via Acetalation of a Commodity Polymer. Macromolecules 2021. [DOI: 10.1021/acs.macromol.1c01346] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Weihong Yang
- Chongqing Technology Innovation Center, Northwestern Polytechnical University, Chongqing 401135, P. R. China
- Department of Chemistry, School of Chemistry and Chemical Engineering, Key Laboratory of Special Functional and Smart Polymer Materials of Ministry of Industry and Information Technology, Northwestern Polytechnical University, Xi’an 710129, P. R. China
| | - Shuang Liu
- Chongqing Technology Innovation Center, Northwestern Polytechnical University, Chongqing 401135, P. R. China
- Department of Chemistry, School of Chemistry and Chemical Engineering, Key Laboratory of Special Functional and Smart Polymer Materials of Ministry of Industry and Information Technology, Northwestern Polytechnical University, Xi’an 710129, P. R. China
| | - Jing Yan
- Chongqing Technology Innovation Center, Northwestern Polytechnical University, Chongqing 401135, P. R. China
- Department of Chemistry, School of Chemistry and Chemical Engineering, Key Laboratory of Special Functional and Smart Polymer Materials of Ministry of Industry and Information Technology, Northwestern Polytechnical University, Xi’an 710129, P. R. China
| | - Fenglin Zhong
- Queen Mary University of London Engineering School, Northwestern Polytechnical University, Xi’an 710129, P. R. China
| | - Nanfang Jia
- Beijing BOE Display Technology Co., Ltd., Beijing 100176, P. R. China
| | - Yi Yan
- Chongqing Technology Innovation Center, Northwestern Polytechnical University, Chongqing 401135, P. R. China
- Department of Chemistry, School of Chemistry and Chemical Engineering, Key Laboratory of Special Functional and Smart Polymer Materials of Ministry of Industry and Information Technology, Northwestern Polytechnical University, Xi’an 710129, P. R. China
| | - Qiuyu Zhang
- Department of Chemistry, School of Chemistry and Chemical Engineering, Key Laboratory of Special Functional and Smart Polymer Materials of Ministry of Industry and Information Technology, Northwestern Polytechnical University, Xi’an 710129, P. R. China
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