Results 71 to 80 of about 38,234 (262)

How to Chemically Protect PFAS‐Free Membranes in Fuel Cells: Radical Quenching Poly(vinylphosphonic acid) Layer

Advanced Functional Materials, EarlyView.
Hydrocarbon membranes are a greener alternative to PFSA in PEM fuel cells, but degrade rapidly from radical attack. We present a novel strategy using poly(vinylphosphonic acid) (PVPA) as a local radical scavenger. Incorporated as an interfacial barrier, PVPA enhances chemical stability and significantly extends membrane lifetime under accelerated ...
Hendrik Sannemüller, Hannes Liepold, Frederik Brendel, Janka Friese, Carolin Klose, Tym de Wild, Andreas Münchinger   +6 more
wiley   +1 more source

A new pyridine-based porous organic polymer composited high-temperature proton exchange membrane

Materials Reports: Energy
As promising high-temperature proton exchange membranes, phosphoric acid (PA) doped polybenzimidazole (PBI) membranes still face challenges, including excessive PA leaching and limited long-term stability. The preparation of mixed matrix membranes (MMMs)
Weiyu Zhang, Jie Li, Hong Li, Yi Tang, Tianqi Yang, Xiaofei Ye, Weiyi Jin, Yiming Sun, Yicheng Dong, Xiangdong Zhang, Chenliang Gong   +10 more
doaj   +1 more source

Flexible Multiple Micro Sensor for Local Persistent Effect Test in High Temperature Proton Exchange Membrane Fuel Cell Stack

International Journal of Electrochemical Science, 2017
The nonuniformity of local temperature, voltage and current in the high temperature proton exchange membrane fuel cell stack can accelerate the aging of membrane electrode assembly (MEA) and the failure of overall fuel cell stack.
Chi-Yuan Lee, Fang-Bor Weng, Chuang-Yu Hsieh, Ay Su, Fan-Hsuan Liu, Chih-Kai Cheng, Yi-Chang Shiu   +6 more
doaj   +1 more source

Bio‐Inspired Molecular Events in Poly(Ionic Liquids)

Advanced Functional Materials, EarlyView.
Originating from dipolar and polar inter‐ and intra‐chain interactions of the building blocks, the topologies and morphologies of poly(ionic liquids) (PIL) govern their nano‐ and micro‐processibility. Modulating the interactions of cation‐anion pairs with aliphatic dipolar components enables the tunability of properties, facilitated by “bottom‐up ...
Jiahui Liu, Marek W. Urban
wiley   +1 more source

Accelerated Discovery of High Performance Ni3S4/Ni3Mo HER Catalysts via Bayesian Optimization

Advanced Functional Materials, EarlyView.
Integrated workflow accelerates the catalyst discovery of hydrogen evolution reaction via Bayesian optimization. An experiment‐trained surrogate model proposes synthesis conditions, guiding iterative refinement using electrochemical performance metrics.
Namuersaihan Namuersaihan, Zhiqiang Zhao, Oliver J. Conquest, Ying Shu, Haoyue Sun, Chunjing Su, Qi Cheng, Aloysius Soon, Catherine Stampfl, Jun Huang   +9 more
wiley   +1 more source

Drug‐Free Thrombolysis Mediated by Physically Activated Micro/Nanoparticles

Advanced Functional Materials, EarlyView.
Overview of particle‐mediated thrombolytic effects (thermal, mechanical, and chemical) and their activating physical stimuli (light, ultrasound, and magnetic field) in drug‐free thrombolysis. ABSTRACT Thrombus‐associated disorders rank among the world's leading causes of death, with ischemic heart disease and stroke as the main contributors.
Pierre Sarfati, Yoann Lalatonne, Cédric Chauvierre   +2 more
wiley   +1 more source

Nanostructured POSS Crosslinked Polybenzimidazole with Free Radical Scavenging Function for High-Temperature Proton Exchange Membranes

Nanomaterials
High-temperature proton exchange membranes (HT-PEMs) are critical components of high-temperature fuel cells, facilitating proton transport and acting as a barrier to fuel and electrons; however, their performance is hampered by persistent issues of ...
Chao Meng, Xiaofeng Hao, Shuanjin Wang, Dongmei Han, Sheng Huang, Jin Li, Min Xiao, Yuezhong Meng   +7 more
doaj   +1 more source

Nucleation‐Controlled Reconstruction of CuOx for Selective CO2 Electroreduction

Advanced Functional Materials, EarlyView.
The ratio of oxygen vacancies (Ov) and exposed Cu2O (111)/(200) of CuOx precatalyst is modulated by nucleation control of Cu(OH)2 precursor. Low Ov ratio and high ratio of Cu2O (111)/(200) in slow‐nucleated CuOx reconstructs to high‐coordinated oxide‐derived copper (OD‐Cu) during electrochemical CO2 reduction reaction (CO2RR) and exhibits enhanced ...
Ying Ying Ch'ng, Zhipeng Ma, Ming Zhang, Shujie Zhou, Varun Kundi, Priyank Vijaya Kumar, Wenyu Zhong, Yuwei Yang, Jitraporn Vongsvivut, Qinfen Gu, Xiaoxuan Luo, Lixue Jiang, Rahman Daiyan, Zhaojun Han, Rose Amal   +14 more
wiley   +1 more source

Poly(ionic liquid)/OPBI Composite Membrane with Excellent Chemical Stability for High-Temperature Proton Exchange Membrane. [PDF]

Polymers (Basel), 2023
Xiao Y, Chen H, Sun R, Zhang L, Xiang J, Cheng P, Han H, Wang S, Tang N.   +8 more
europepmc   +1 more source

Dual‐Site Ru Single‐Atoms and RuP Nanoclusters on N, P, and B Co‐Doped Porous Carbon for Efficient Alkaline HER and AEM Water Electrolysis

Advanced Functional Materials, EarlyView.
Ru single atoms and RuP nanoclusters are co‐anchored in N, P, and B co‐doped porous carbon nanospheres via in situ carbonization/phosphidation of a boronate polymer precursor. RuP activates water, while nearby Ru single atoms accelerate H2 formation through H* transfer. The catalyst delivers low overpotential and high durability in alkaline HER and AEM
Xiaohong Wang, Juguo Dai, Dongxu Li, Jianghua Wu, Hucheng Fu, Yiting Xu, Xueqiang Qi, Qian Xue, Yanbin Shen, Xiaoqing Pan, Conghui Yuan, Shuifen Xie, Andreu Cabot, Lizong Dai   +13 more
wiley   +1 more source