Article
Nanoscience & Nanotechnology
Mohammad Atiqur Rahman, Junya Yagyu, Md. Saidul Islam, Masahiro Fukuda, Sora Wakamatsu, Ryuta Tagawa, Zhiqing Feng, Yoshihiro Sekine, Junya Ohyama, Shinya Hayami
Summary: Graphene oxide (GO)-based materials have been extensively studied as low-cost efficient solid electrolytes for fuel-cell application. However, the limited proton conductivity of GO in the out-of-plane directions and associated lower fuel-cell performance restrict their practical application. In this study, a sulfate ion-intercalated three-dimensional graphene oxide (3DSGO) with exceptionally high out-of-plane proton conductivity and improved fuel-cell performance was demonstrated.
ACS APPLIED NANO MATERIALS
(2023)
Article
Chemistry, Applied
Christopher M. A. Parlett, Hamidreza Arandiyan, Lee J. Durndell, Mark A. Isaacs, Antonio Torres Lopez, Roong J. Wong, Karen Wilson, Adam F. Lee
Summary: The article demonstrates a method for continuous flow synthesis of SBA-15 at high yield at 80 degrees C using a simple tube reactor. The resulting SBA-15 exhibits excellent textural properties and far higher productivity than previously reported in batch or flow synthesis.
MICROPOROUS AND MESOPOROUS MATERIALS
(2022)
Article
Chemistry, Physical
Yanbo Chen, Fei Xu, Jing Li, Yuyang Han, Junjie Qiao, Jie Liu, Yao Xu, Bencai Lin
Summary: Poly(fluorenyl terphenyl piperidinium) (PFTP) with an aromatic backbone was synthesized to produce proton exchange membranes (PEMs) with robust mechanical properties. The introduction of propanesulfonic acid side chains enhanced the phosphoric acid (PA) adsorption capacity and proton conductivity of the resulting sulfonated PFTP (SPFTP-x) membranes. These membranes exhibited good thermal, oxidization, and dimensional stabilities, and the SPFTP-x membranes showed higher PA adsorption capacity and higher proton conductivity than the PFTP membrane. A single cell assembled with SPFTP-50 exhibited a maximum power density of 280 mW cm-2 at 100 degrees C, indicating the promising application of SPFTP-x as a membrane material for high-temperature proton membrane fuel cells.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Multidisciplinary Sciences
M. Yusuf Ansari, Khursheed B. Ansari, Inamuddin, S. J. A. Rizvi
Summary: This study develops and characterizes Nexar-based nanocomposite membranes as an alternative to Nafion. The membranes are characterized for their crystallinity, surface morphology, functionalities, and thermal stability. Modification with doped silica and sulfonated silica nanoparticles significantly improves water uptake, swelling ratio, and proton conductivity. The functionalized nanocomposite membranes show higher ion exchange capacity and less swelling ratio, making them suitable for PEM fuel cell operation.
ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING
(2023)
Article
Environmental Sciences
Zeinab Ezzeddine, Isabelle Batonneau-Gener, Yannick Pouilloux
Summary: The removal of zinc ions from water was studied using two types of ordered mesoporous silica (SBA-15 and SBA-16). Both materials were modified with APTES and EDTA through post grafting methods. The modified adsorbents were characterized by various analytical techniques, and the structural integrity was maintained. Optimal adsorption conditions and maximum adsorption capacity were determined through experimental tests, and the regenerated adsorbent showed no significant decline in adsorption efficiency.
Article
Materials Science, Multidisciplinary
Andrea Basso Peressut, Saverio Latorrata, Paola Gallo Stampino, Giovanni Dotelli
Summary: This study presents a simple method for preparing self-assembling sulfonated graphene oxide membranes, investigating the effect of different sulfuric acid-to-graphene oxide ratios to find an optimal sulfonation interval. The membranes exhibit notable water-retaining and proton-exchanging properties, making them worthy of further optimization for potential use as electrolytes in PEM fuel cells.
MATERIALS CHEMISTRY AND PHYSICS
(2021)
Article
Polymer Science
Tushar Kanti Maiti, Jitendra Singh, Subrata Kumar Maiti, Jagannath Majhi, Arihant Ahuja, Manjinder Singh, Anasuya Bandyopadhyay, Gaurav Manik, Sujay Chattopadhyay
Summary: In this study, the introduction of sulfonic acid functionalized graphene oxide (SGO) into Perfluorosulfonic acid (PFSA) membranes improved the glass transition temperature (Tg), mechanical properties, proton conductivity, and single-cell performance. The loading of SGO increased the Tg and modulus of PFSA composite membranes, leading to enhanced proton conductivity and fuel cell performance.
EUROPEAN POLYMER JOURNAL
(2022)
Article
Physics, Applied
Fnu Gorky, Shelby R. Guthrie, Courtney S. Smoljan, James M. Crawford, Moises A. Carreon, Maria L. Carreon
Summary: The mesoporous SBA-15 silica material demonstrated significantly higher efficiency in synthesizing ammonia through atmospheric dielectric barrier discharge plasma, mainly due to its hierarchically ordered pore structure that facilitates the diffusion of plasma discharge into the pores.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2021)
Review
Chemistry, Physical
Minghan Xu, Hao Xue, Qingfu Wang, Lichao Jia
Summary: Proton exchange membrane fuel cells (PEMFCs) are potential clean energy sources attracting attention, with a focus on developing high-performance, low-cost PEMs to replace benchmark Nafion membranes. Sulfonated poly(arylene ether ketone)s (SPAEKs) and sulfonated poly(arylene ether sulfone)s (SPAESs) are promising candidates due to their performance and cost advantages. Efforts are classified and introduced in developing SPAEK and SPAES membranes for promising research directions in the field.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Applied
Zhe Wang, Rui Sun, Pengwei Wang, Wei Wang
Summary: This study successfully prepared rod-shaped SBA-15 nanoparticles with 2-3 mesopore channels, showing potential for biomedical applications. Through a specific preparation method, SBA-15NPs exhibited higher surface area, pore volume, and faster adsorption rate in enzyme adsorption tests compared to conventional rod-shaped SBA-15.
MICROPOROUS AND MESOPOROUS MATERIALS
(2021)
Article
Chemistry, Physical
Nagaraju Niluroutu, Avanish Shukla, Vishal M. Dhavale, Sreekuttan M. Unni, Santoshkumar D. Bhat
Summary: The composite membrane of sPEEK and PSSA-f-MCM-41 shows improved physio-chemical properties, reduced methanol permeability, and higher electrochemical selectivity, resulting in better DMFC performance.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Polymer Science
N. Prabhu
Summary: Sulfonated mesoporous SBA-15 was used as a filler for the preparation of sulfonated polysulfone based composite electrolyte membranes. The physical and chemical properties of the membranes were analyzed using various characterization techniques. The results showed that sulfonated SBA-15 provided additional ion exchange sites and retained water, leading to increased power density in the fuel cell.
HIGH PERFORMANCE POLYMERS
(2023)
Article
Chemistry, Physical
Zhuoyu Yin, Haobo Geng, Pengfei Yang, Benbing Shi, Chunyang Fan, Quan Peng, Hong Wu, Zhongyi Jiang
Summary: A sulfonated covalent organic framework nanosheets (TpPa-SO3H) were synthesized and incorporated into SPEEK matrix to prepare proton exchange membranes with increased ion exchange capacity and reduced swelling ratio. The SPEEK/TpPa-SO3H-5 membrane exhibited significantly improved proton conductivity and mechanical strength, leading to favorable performance in a single H-2/O-2 fuel cell.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Physical
Hongxia Liu, Yijia Lao, Jiayi Wang, Junjie Jiang, Chuanbai Yu, Yuanli Liu
Summary: The development of composite materials with functional additives proved to be an effective way to improve or supplement the required properties of polymers. In this study, mesoporous silica (SBA-15) with different pore sizes were used as functional additives to prepare SBA-15/PF (phenolic resin) nanocomposites. The results revealed that the pore sizes of SBA-15 have a significant effect on the resulting SBA-15/PF hybrid and SBA-15/PF nanocomposites, with enhanced thermal and frictional properties.
Article
Polymer Science
Si Shen, Tingting Jia, Jing Jia, Ning Wang, Di Song, Jing Zhao, Jin Jin, Quantong Che
Summary: The proton exchange membranes (PEMs) constructed through alternate depositing chitosan and graphene oxide show improved proton conductivity and mechanical properties in high temperature proton exchange membrane fuel cells (HTPEMFCs). Doped phosphoric acid molecules enhance membrane's mechanical strength, while layer-by-layer deposited composite membranes exhibit excellent proton conductivity and stability. The strategy of alternate depositing functional components on membrane substrates proves to be more effective at enhancing the quality of PEMs.
EUROPEAN POLYMER JOURNAL
(2021)
Article
Chemistry, Multidisciplinary
Sung-Ju Cho, Keun-Ho Choi, Jong-Tae Yoo, Jeong-Hun Kim, Yong-Hyeok Lee, Sang-Jin Chun, Sang-Bum Park, Don-Ha Choi, Qinglin Wu, Sun-Young Lee, Sang-Young Lee
ADVANCED FUNCTIONAL MATERIALS
(2015)
Article
Thermodynamics
Sun-Hwa Yeon, Dong-Ha Kim, Daewi Kim, Se-Kook Park, Hana Yoon, Jungjoon Yoo, Kyoung-Hee Shin, Chang-Soo Jin, Yun Jung Lee, Sang-Young Lee
Article
Engineering, Chemical
Jun-Muk Lim, Hyeon-Ji Lee, Hyun-Woo Kim, Jang Yong Lee, JongTae Yoo, Kwan Woo Park, Chang Kee Lee, Young Taik Hong, Sang-Young Lee
JOURNAL OF MEMBRANE SCIENCE
(2015)
Article
Chemistry, Physical
Ju-Myung Kim, Chang-Hoon Park, Qinglin Wu, Sang-Young Lee
ADVANCED ENERGY MATERIALS
(2016)
Article
Chemistry, Multidisciplinary
Yeon-Su Oh, Gwan Yeong Jung, Jeong-Hoon Kim, Jung-Hwan Kim, Su Hwan Kim, Sang Kyu Kwak, Sang-Young Lee
ADVANCED FUNCTIONAL MATERIALS
(2016)
Article
Chemistry, Multidisciplinary
Gyujin Song, Jaegeon Ryu, Seunghee Ko, Byoung Man Bang, Sinho Choi, Myoungsoo Shin, Sang-Young Lee, Soojin Park
CHEMISTRY-AN ASIAN JOURNAL
(2016)
Article
Chemistry, Multidisciplinary
Keun-Ho Choi, JongTae Yoo, Chang Kee Lee, Sang-Young Lee
ENERGY & ENVIRONMENTAL SCIENCE
(2016)
Article
Chemistry, Multidisciplinary
Gaeun Hwang, Ju-Myung Kim, Dongki Hong, Choon-Ki Kim, Nam-Soon Choi, Sang-Young Lee, Soojin Park
Article
Engineering, Chemical
Hyeon-Ji Lee, Jun-Muk Lim, Hyun-Woo Kim, Sang-Hwan Jeong, Seung-Wook Eom, Young Taik Hong, Sang-Young Lee
JOURNAL OF MEMBRANE SCIENCE
(2016)
Article
Chemistry, Multidisciplinary
JongTae Yoo, Sung-Ju Cho, Gwan Yeong Jung, Su Hwan Kim, Keun-Ho Choi, Jeong-Hoon Kim, Chang Kee Lee, Sang Kyu Kwak, Sang-Young Lee
Article
Chemistry, Multidisciplinary
Jung-Hwan Kim, Minsu Gu, Do Hyun Lee, Jeong-Hoon Kim, Yeon-Su Oh, Sa Hoon Min, Byeong-Su Kim, Sang-Young Lee
Article
Chemistry, Multidisciplinary
Taesoo Bok, Sung-Ju Cho, Sinho Choi, Keun-Ho Choi, Hyungmin Park, Sang-Young Lee, Soojin Park
Article
Chemistry, Physical
Ye-Ri Jang, Ju-Myung Kim, Jung-Han Lee, Sung-Ju Cho, Guntae Kim, Young-Wan Ju, Sun-Hwa Yeon, JongTae Yoo, Sang-Young Lee
JOURNAL OF MATERIALS CHEMISTRY A
(2016)
Article
Chemistry, Physical
Hyun-Woo Kim, Jun-Muk Lim, Hyeon-Ji Lee, Seung-Wook Eom, Young Taik Hong, Sang-Young Lee
JOURNAL OF MATERIALS CHEMISTRY A
(2016)
Article
Chemistry, Multidisciplinary
Jung Han Lee, Ju-Myung Kim, Jung-Hwan Kim, Ye-Ri Jang, Jeong A. Kim, Sun-Hwa Yeon, Sang-Young Lee
ADVANCED MATERIALS INTERFACES
(2016)