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Huang J, Wei G, Wu A, Liu D, Wang L, Luo J. Enhancing Performance and Stability of High-Temperature Proton Exchange Membranes through Multiwalled Carbon Nanotube Incorporation into Self-Cross-Linked Fluorenone-Containing Polybenzimidazole. ACS APPLIED MATERIALS & INTERFACES 2024; 16:25994-26003. [PMID: 38739746 DOI: 10.1021/acsami.4c00052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2024]
Abstract
Addressing critical challenges in enhancing the oxidative stability and proton conductivity of high-temperature proton exchange membranes (HT-PEMs) is pivotal for their commercial viability. This study uncovers the significant capacity of multiwalled carbon nanotubes (MWNTs) to absorb a substantial amount of phosphoric acid (PA). The investigation focuses on incorporating long-range ordered hollow MWNTs into self-cross-linked fluorenone-containing polybenzimidazole (FPBI) membranes. The absorbed PA within MWNTs and FPBI forms dense PA networks within the membrane, effectively enhancing the proton conductivity. Moreover, the exceptional inertness of MWNTs plays a vital role in reinforcing the oxidation resistance of the composite membranes. The proton conductivity of the 1.5% CNT-FPBI membrane is measured at 0.0817 S cm-1 at 160 °C. Under anhydrous conditions at the same temperature, the power density of the 1.5% CNT-FPBI membrane reaches 831.3 mW cm-2. Notably, the power density remains stable even after 200 h of oxidation testing and 250 h of operational stability in a single cell. The achieved power density and long-term stability of the 1.5% CNT-FPBI membrane surpass the recently reported results. This study introduces a straightforward approach for the systematic design of high-performance and robust composite HT-PEMs for fuel cells.
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Affiliation(s)
- Jinzhen Huang
- Shenzhen Key Laboratory of Polymer Science and Technology, College of Materials Science and Engineering, Shenzhen University, Shenzhen, Guangdong 518060, China
| | - Gongyi Wei
- Shenzhen Key Laboratory of Polymer Science and Technology, College of Materials Science and Engineering, Shenzhen University, Shenzhen, Guangdong 518060, China
| | - Aogui Wu
- Shenzhen Key Laboratory of Polymer Science and Technology, College of Materials Science and Engineering, Shenzhen University, Shenzhen, Guangdong 518060, China
| | - Dong Liu
- Shenzhen Key Laboratory of Polymer Science and Technology, College of Materials Science and Engineering, Shenzhen University, Shenzhen, Guangdong 518060, China
| | - Lei Wang
- Shenzhen Key Laboratory of Polymer Science and Technology, College of Materials Science and Engineering, Shenzhen University, Shenzhen, Guangdong 518060, China
- School of Materials Science and Engineering, Hanshan Normal University, Chaozhou, Guangdong 521041, China
| | - Jingli Luo
- Shenzhen Key Laboratory of Polymer Science and Technology, College of Materials Science and Engineering, Shenzhen University, Shenzhen, Guangdong 518060, China
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Jagtap P, Kumar P. Effect of electric field on mechanical behavior of vertically-aligned carbon nanotube structures. PROCEEDINGS OF THE INDIAN NATIONAL SCIENCE ACADEMY 2023. [DOI: 10.1007/s43538-023-00161-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/28/2023]
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Bhinder J, Agnihotri PK. Understanding the effect of processing temperature and carbon nanotube addition on the viscoelastic response of polyurethane foams. J Appl Polym Sci 2022. [DOI: 10.1002/app.51644] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Jasdeep Bhinder
- Mechanics of Advanced Material Laboratory, Department of Mechanical Engineering Indian Institute of Technology, Ropar Rupnagar India
| | - Prabhat K. Agnihotri
- Mechanics of Advanced Material Laboratory, Department of Mechanical Engineering Indian Institute of Technology, Ropar Rupnagar India
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Functionalized organic nanotubes with highly tunable crosslinking site density for mechanical enhancement and pH-controlled drug release of nanocomposite hydrogels. Polym J 2021. [DOI: 10.1038/s41428-021-00556-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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