Porous nanofiber composite membrane with 3D interpenetrating networks towards ultrafast and isotropic proton conduction

2020 ◽  
Vol 8 (10) ◽  
pp. 5128-5137 ◽  
Author(s):  
Yafang Zhang ◽  
Xiang Zhang ◽  
Ping Li ◽  
Wenjia Wu ◽  
Jianlong Lin ◽  
...  
Keyword(s):  
Composite Membrane ◽  
Composite Membranes ◽  
Proton Conduction ◽  
Interpenetrating Networks ◽  
Acid Base ◽  
Base Pairs ◽  
Nanofiber Composite ◽  
Porous Nanofiber

Nanofiber composite membranes with 3D interpenetrating nanopore networks and enriched acid–base pairs exhibit ultrafast and isotropic proton conduction.

A promising Al-CeZrO4/HPW-incorporated SPEEK composite membrane with improved proton conductivity and chemical stability for PEM fuel cells

2020 ◽  
pp. 095400832095707
Author(s):  
Yingfeng Wang ◽  
Jiabin You ◽  
Zhuowei Cheng ◽  
Kun Jiang ◽  
Linlin Zhang ◽  
...  
Keyword(s):  
Proton Conductivity ◽  
Composite Membrane ◽  
Chemical Stability ◽  
Pem Fuel Cells ◽  
Nanocomposite Membrane ◽  
Acid Base ◽  
Base Pairs ◽  
Ether Ether Ketone ◽  
Poly Ether Ether Ketone ◽  
Speek Membrane

An improved sulfonated poly (ether ether ketone) (SPEEK) nanocomposite membrane was prepared by incorporating both phosphotungstic acid (HPW) and Al doped cerium-based oxides (Al-CeZrO4) in SPEEK matrix. The HPW was immobilized by Al-CeZrO4 so that firmly dispersed acid–base pairs were formed. The introduction of Al-CeZrO4 helped improve the chemical stability of the pristine (baseline) SPEEK membrane without compromising the conductivity, and the addition of HPW further enhanced the conduction of protons through acid–base interactions. Stability tests showed that when the SPEEK/Al-CeZrO4 nanocomposite membrane was immersed in a Fenton’s solution for 108 h at 80°C, a loss of 34.9% in proton conductivity was observed, which is 24.1% less than that of the pristine SPEEK membrane, indicating that the attenuation of membrane proton conductivity was inhibited. At the same time, the proton conductivity of the SPEEK/Al-CeZrO4/HPW nanocomposite membrane (that has already incorporated HPW) was increased by 15.5% compared to the SPEEK/Al-CeZrO4 nanocomposite membrane. Hence, Al-CeZrO4/HPW is considered as an effective inorganic nanofiller for improving both proton conductivity and chemical stability of SPEEK membranes, and the hybrid composite membrane is worth further studying.

Enhanced proton conductivities of nanofibrous composite membranes enabled by acid–base pairs under hydrated and anhydrous conditions

2015 ◽  
Vol 482 ◽  
pp. 1-12 ◽  
Author(s):  
Jingtao Wang ◽  
Yakun He ◽  
Liping Zhao ◽  
Yifan Li ◽  
Shaokui Cao ◽  
...  
Keyword(s):  
Composite Membranes ◽  
Acid Base ◽  
Base Pairs

Porous Nafion nanofiber composite membrane with vertical pathways for efficient through-plane proton conduction

2019 ◽  
Vol 585 ◽  
pp. 157-165 ◽  
Author(s):  
Jingtao Wang ◽  
Ping Li ◽  
Yafang Zhang ◽  
Yarong Liu ◽  
Wenjia Wu ◽  
...  
Keyword(s):  
Composite Membrane ◽  
Proton Conduction ◽  
Nanofiber Composite

Synergistic effect of MOF-Directed ordered acid-base pairs for enhanced proton conduction

2021 ◽  
pp. 111199
Author(s):  
Qinghui Wang ◽  
Xiaofeng Zheng ◽  
Huixuan Chen ◽  
Zhikang Shi ◽  
Huan Tang ◽  
...  
Keyword(s):  
Synergistic Effect ◽  
Proton Conduction ◽  
Acid Base ◽  
Base Pairs

scholarly journals Hydrophilic nanofibrous composite membrane prepared by melt-blending extrusion for effective separation of oil/water emulsion

RSC Advances ◽  
2017 ◽  
Vol 7 (12) ◽  
pp. 7108-7115 ◽  
Author(s):  
Dandan Xu ◽  
Xiaoting Zheng ◽  
Ru Xiao
Keyword(s):  
Composite Membrane ◽  
High Speed ◽  
Composite Membranes ◽  
Melt Blending ◽  
Nanofiber Membrane ◽  
Water Separation ◽  
Nanofiber Composite ◽  
Water Emulsion ◽  
Oil Water Separation ◽  
Oil Water

EVOH nanofiber membrane was prepared by melt blending extrusion and high-speed airflow deposition. Then NCC/EVOH nanofiber composite membranes were obtained via coating and deposition the barrier layer on the surface of the nanofiber membrane for oil/water separation.

Nanofiber composite membrane using quantum dot hybridized SPEEK nanofiber for efficient through-plane proton conduction

2020 ◽  
Vol 609 ◽  
pp. 118198 ◽  
Author(s):  
Ping Li ◽  
Jingchuan Dang ◽  
Wenjia Wu ◽  
Jianlong Lin ◽  
Zhuofan Zhou ◽  
...  
Keyword(s):  
Quantum Dot ◽  
Composite Membrane ◽  
Proton Conduction ◽  
Nanofiber Composite

Constructing Long-Range Transfer Pathways with Ordered Acid–Base Pairs for Highly Enhanced Proton Conduction

2019 ◽  
Vol 11 (10) ◽  
pp. 9964-9973 ◽  
Author(s):  
Yarong Liu ◽  
Wenjia Wu ◽  
Ping Li ◽  
Jianlong Lin ◽  
Zhihao Yang ◽  
...  
Keyword(s):  
Long Range ◽  
Proton Conduction ◽  
Acid Base ◽  
Base Pairs

scholarly journals Sc3N@Ih-C80 as a novel Lewis acid to trap abnormal N-heterocyclic carbenes: the unprecedented formation of a singly bonded [6,6,6]-adduct

2016 ◽  
Vol 7 (3) ◽  
pp. 2331-2334 ◽  
Author(s):  
Muqing Chen ◽  
Lipiao Bao ◽  
Min Ai ◽  
Wangqiang Shen ◽  
Xing Lu
Keyword(s):  
Lewis Acid ◽  
Heterocyclic Carbenes ◽  
Acid Base ◽  
Base Pairs ◽  
Endohedral Metallofullerenes ◽  
Carbon Based

An unprecedented singly bonded [6,6,6]-adduct with an abnormal N-heterocyclic carbene structure, represents the first example of carbon-based Lewis acid–base pairs based on endohedral metallofullerenes.

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