Results 21 to 30 of about 38,234 (262)

Electrochemical Properties of SPEEK/Epoxy Semi-interpenetrating Network Composites as Proton Exchange Membrane

International Journal of Electrochemical Science, 2018
The DS 68% SPEEK composite membranes with were prepared by post-sulfonation. Using diethylenetriamine as the epoxy cross-linking agent, which is uniformly distributed in SPEEK, to form SPEEK/epoxy semi-interpenetrating network structure and explore the ...
Zhengping Zhao, Chenyu Pan, Lixin Xue, Guojun Jiang, Mingqiang Zhong, Benhua Fei   +5 more
doaj   +1 more source

Impact of Membrane Phosphoric Acid Doping Level on Transport Phenomena and Performance in High Temperature PEM Fuel Cells

Membranes, 2021
In this work, a three-dimensional mathematical model including the fluid flow, heat transfer, mass transfer, and charge transfer incorporating electrochemical reactions was developed and applied to investigate the transport phenomena and performance in ...
Shian Li, Chengdong Peng, Qiuwan Shen, Chongyang Wang, Yuanzhe Cheng, Guogang Yang   +5 more
doaj   +1 more source

Novel composite Nafion membranes modified with copper phthalocyanine tetrasulfonic acid tetrasodium salt for fuel cell application

Journal of Materiomics, 2019
In this paper, Nafion membrane was firstly modified by copper phthalocyanine tetrasulfonic acid tetrasodium salt (CuTSPc) to prepare the Nafion/CuTSPc-x composite membranes.
Yanan Wei, Tianhua Qian, Jiawen Liu, Xaojing Guo, Qiaojuan Gong, Zhaorong Liu, Binglun Tian, Jinli Qiao   +7 more
doaj   +1 more source

Ionomer Membranes Produced from Hexaarylbenzene-Based Partially Fluorinated Poly(arylene ether) Blends for Proton Exchange Membrane Fuel Cells

Membranes, 2022
In this study, a series of high molecular weight ionomers of hexaarylbenzene- and fluorene-based poly(arylene ether)s were synthesized conveniently through condensation and post-sulfonation modification.
Tzu-Sheng Huang, Hsin-Yi Wen, Yi-Yin Chen, Po-Hao Hung, Tung-Li Hsieh, Wen-Yao Huang, Mei-Ying Chang   +6 more
doaj   +1 more source

Performance of a membrane humidifier for a proton exchange membrane fuel cell

工程科学学报, 2022
The liquid water produced by an electrochemical reaction at the cathode of a proton exchange membrane fuel cell blocks the pores in the gas diffusion layer, resulting in “water flooding.” At the same time, membrane dehydration leads to serious ohmic ...
Zhi-yuan LI, Na LI, Qing-yu LI, Cheng BAO, Yue TENG   +4 more
doaj   +1 more source

Flexible Four-in-one Micro Sensor for Reliability and 100-hour Durability Testing

International Journal of Electrochemical Science, 2015
By using micro-electro-mechanical systems (MEMS), this work develops flexible four-in-one (temperature, voltage, current and flow) micro sensor on a flexible substrate. The flexible four-in-one micro sensor use polyimide as the protective layer, owing to
Chi-Yuan Lee, Chia-Hung Chen, Chin-Lung Hsieh, Kin-Fu Lin, Shyong Lee, Ten-Lom Chen, Yen-Pu Huang   +6 more
doaj   +1 more source

Microscopic Monitoring of Local Temperature in the High Temperature Proton Exchange Membrane Fuel Cell Stack

International Journal of Electrochemical Science, 2013
The non-uniform distributions of internal temperature in a membrane electrode assembly (MEA) of proton exchange membrane fuel cell (PEMFC) stack affect not only the reactions that occur in it, but also its performance and lifetime.
Chi-Yuan Lee, Fang-Bor Weng, Fan-Hsuan Liu, Chih-Ping Chang, Chih-Kai Cheng   +4 more
doaj   +1 more source

Numerical Investigation and Optimization of Cooling Flow Field Design for Proton Exchange Membrane Fuel Cell

Energies, 2022
High temperatures and non-uniform temperatures both have a negative bearing on the performance of proton exchange membrane fuel cells. The temperature of proton exchange membrane fuel cells can be lowered by reasonably distributed cooling channels.
Jiangnan Song, Ying Huang, Yi Liu, Zongpeng Ma, Lunjun Chen, Taike Li, Xiang Zhang   +6 more
doaj   +1 more source

Comprehensive optimization of an integrated energy system for power, hydrogen, and freshwater generation using high-temperature PEM fuel cell

Case Studies in Thermal Engineering
Modern energy conversion technologies with low or no emissions are needed to achieve sustainable development goals. This research examines the thermodynamic and exergy-economic features of a high-temperature proton exchange membrane fuel cell.
Soheil Gharibzadeh, Roghayyeh Motallebzadeh, Samad Jafarmadar, Abdulsalam Ebrahimpour   +3 more
doaj   +1 more source

Preparation and Proton Exchange Properties of GO Grafting modified Cross-linked Membranes

International Journal of Electrochemical Science, 2018
The cross-linked membranes were prepared with DS 68% SPEEK and epoxy resin. Sulfonated graphite oxide was grafted into SPEEK main bonds to study the sulfonic acid groups on the impact of proton exchange properties. Using solartron electrochemical testing
Zhengping Zhao, Chenyu Pan, Guojun Jiang, Mingqiang Zhong, Benhua Fei   +4 more
doaj   +1 more source