Review
Chemistry, Multidisciplinary
Enbo Zhu, Menghao Wu, Haozhe Xu, Bosi Peng, Zeyan Liu, Yu Huang, Yujing Li
Summary: This article provides a review of recent progress on the understanding of the fundamental chemical and structural stability of platinum-group-metal-based (PGM-based) catalysts and their durability in operational proton exchange membrane fuel cells (PEMFCs). The article emphasizes the importance of systematic studies on the stability of PGM-based catalysts and the need for practical descriptors for catalyst design with both superior activity and durability.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Biochemistry & Molecular Biology
Su-Jeong Bak, Sun- Kim, Su-yeong Lim, Taehyo Kim, Se-Hun Kwon, Duck Hyun Lee
Summary: The study demonstrated highly efficient oxygen reduction catalysts composed of uniform Pt nanoparticles on small, reduced graphene oxides (srGO). The catalysts exhibited efficient surface reactions, large surface areas, high metal dispersions, and excellent oxygen reduction performance. Detailed investigations suggested that the chemical functionality and electrical conductivity greatly influenced the enhanced oxygen reduction efficiency of the catalysts.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2021)
Article
Energy & Fuels
Changke Shao, Mingsheng Luo, Huanqiao Song, Shixin Zhang, Fengli Wang, Xinyue Liu, Zitian Huang
Summary: Great interest has been taken in the oxygen reduction reaction (ORR), which is a common cathode reaction in fuel cells and metal-air batteries, to improve the current energy structure and develop new green energy sources. The development of efficient and low-cost ORR catalysts is crucial due to the limitations of noble metal Pt as a catalyst. This study successfully synthesized CoNi-950 (Zn), a carbon-based oxygen reduction catalyst, and demonstrated its good catalytic performance. The proposed mechanism suggests that CoNi-950 (Zn) reduces O-2 through a four-electron transfer process in alkaline electrolytes. Evaluation: 8/10.
Article
Materials Science, Multidisciplinary
Chun Ouyang, Damao Xun, Gang Jian
Summary: N-doping and sulfonation were used to prepare PtNi nanoparticles supported on reduced graphene oxide (rGO) through hydrothermal synthesis and thermal decomposition. The specific surface area and catalytic stability of the PtNi/S-(N)rGO catalyst were improved by the anchoring effect of sulfonated groups and evenly distribution of nanoparticles, respectively. The synergistic effect of N-doping and sulfonation led to an increase in catalytic efficiency through an increase in the number of electron transfer.
Article
Chemistry, Physical
Hsiwen Wu, Fei Xiao, Jing Wang, Meng Gu, Minhua Shao
Summary: This work presents simple post-treatment methods to selectively and partially remove the Pd core of Pd-Pt core-shell catalysts. The post-treated core-shell catalyst demonstrates superior durability in oxygen reduction reaction mass activity and polarization power density retention, mitigating Pd dissolution.
Article
Chemistry, Physical
Bapun Barik, Yejin Yun, Aniket Kumar, Hohan Bae, Yeon Namgung, Jun-Young Park, Sun-Ju Song
Summary: Acidic group functionalized graphene oxide (GO) is used to improve the quality of state-of-the-art Nafion electrolytes for next-generation fuel cell application. Single-step-phosphorylated graphene oxide (sPGO) modified Nafion (sPGO/NF) achieves high proton conductivity, chemical durability, and power density under actual fuel cell conditions.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Engineering, Chemical
Rakhi Sood, Stefano Giancola, Anna Donnadio, Marta Zaton, Nicolas Donzel, Jacques Roziere, Deborah J. Jones, Sara Cavaliere
Summary: The study introduced a new type of reinforced membrane based on nanofibers of polysulfone functionalized with 4-heptyl-1,2,3-triazole, showing enhanced dimensional stability, mechanical strength, and Young modulus without compromising proton conductivity. Incorporating active fibers in ionomer membranes is an effective strategy for reinforcement, leading to high performance and increased durability.
JOURNAL OF MEMBRANE SCIENCE
(2021)
Article
Chemistry, Multidisciplinary
Liyu Zhu, Yucheng Li, Peng Ye, Jingyang Zhao, Jing Liu, Jiandu Lei, Luying Wang, Ruisheng Xue
Summary: This article presents an ultra-stable and highly proton conductive self-healing proton exchange membrane made by complexation between Nafion and poly(vinyl alcohol) (PVA), followed by incorporation of sodium lignosulfonate (SLS) intercalation-modified graphene oxide (GO) and post-modification with 4-formylbenzoic acid (FBA). Compared to recast Nafion, the composite membranes exhibit improved mechanical properties and higher proton conductivity. Moreover, the incorporated PVA gives the membranes superior self-healing capabilities. This study opens up new possibilities for the development of reliable and durable proton exchange membranes for fuel cells.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Zhiyang Zeng, Ruiyang Song, Shengping Zhang, Xiao Han, Zhen Zhu, Xiaobo Chen, Luda Wang
Summary: The introduction of N-doped graphene membranes (NGMs) in the study increased the permeance and selectivity of protons, showing significant advantages over commercial PEMs and providing a high-performance solution for practical applications.
Article
Chemistry, Physical
Yi Luo, Junzong Feng, Lukai Wang, Yonggang Jiang, Liangjun Li, Jian Feng
Summary: In this study, a high-surface-area nitrogen-doped graphitic nanocarbon (N-G-CA) was developed as a support material for the Pt-based catalyst in proton exchange membrane fuel cells (PEMFCs), showing superior durability and activity. This can be attributed to the high graphitization extent of N-G-CA and the interactions between doping nitrogen and Pt.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Physical
Luka Pavko, Matija Gatalo, Gregor Krizan, Janez Krizan, Konrad Ehelebe, Francisco Ruiz-Zepeda, Martin Sala, Goran Drazic, Moritz Geuss, Pascal Kaiser, Marjan Bele, Mitja Kostelec, Tina Dukic, Nigel Van de Velde, Ivan Jerman, Serhiy Cherevko, Nejc Hodnik, Bostjan Genorio, Miran Gaberscek
Summary: A fast and easy pulse combustion method has been developed for continuous production of high-metal-loaded and highly uniform supported metallic nanoparticles. By combining PC technology with the DP method, superior intermetallic Pt-M electrocatalysts have been successfully produced for proton exchange membrane fuel cells applications.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Green & Sustainable Science & Technology
Pranav K. Gangadharan, Vidyanand Vijayakumar, Shijil A. Nediyirakkal, Roshni Tresa Fernandez, Adhrika Siddharthan, Sreekumar Kurungot
Summary: A high-performance electrocatalyst Pt/3DNG for PEMFC applications has been developed by grafting an active triple-phase boundary on the 3DNG support material to precisely control the formation of the proton conducting ionomer interface at the active sites. Introducing the concept of in situ generation of the proton conducting-ionomer based active triple-phase boundary during electrode fabrication could potentially replace the conventional method of using Nafion ionomer for electrode preparation.
ADVANCED SUSTAINABLE SYSTEMS
(2021)
Article
Environmental Sciences
Yimin Yan, Yanping Hou, Zebin Yu, Lingli Tu, Shanming Qin, Danquan Lan, Shuo Chen, Jiangli Sun, Shuangfei Wang
Summary: Efficient and durable oxygen reduction reaction (ORR) cathodic catalysts are crucial for microbial fuel cells (MFCs). In this study, B-doped graphene quantum dots implanted into bimetallic organic framework (BGQDs/MOF-15) exhibited superior ORR activity compared to commercial Pt/C catalyst. The MFC with BGQDs/MOF-15 cathode achieved a maximum power density of 703.55 mW m-2, which is 1.53 times higher than that of Pt/C cathode, and maintained great stability over 800 hours.
Article
Chemistry, Multidisciplinary
Huaiyu Chang, Hui Pan, Fang Wang, Zhengguo Zhang, Yaming Kang, Shixiong Min
Summary: This study reports a self-supported electrode, Ni single atoms supported on hierarchically porous N-doped carbonized wood, which efficiently and stably converts CO2 to CO. The electrode has abundant open microchannels and active sites, leading to a high conversion efficiency of CO2 to CO and potential applications in large-scale CO2 reduction systems.
Article
Chemistry, Multidisciplinary
Abhishek Kumar Arya, R. K. Singh Raman, Rahul Parmar, Matteo Amati, Luca Gregoratti, Sumit Saxena
Summary: Graphene coating shows remarkable corrosion resistance and high conductivity, making it an attractive option for bipolar plates in PEMFC.
Article
Chemistry, Physical
Mahshid Ershadi, Mehran Javanbakht, Sayed Ahmad Mozaffari, Beniamin Zahiri
Article
Materials Science, Multidisciplinary
Elham Kouhestanian, Sayed Ahmad Mozaffari, Maryam Ranjbar, Hossein Salar Amoli
ORGANIC ELECTRONICS
(2020)
Article
Chemistry, Multidisciplinary
Padideh Naderi Asrami, Parviz Aberoomand Azar, Mohammad Saber Tehrani, Sayed Ahmad Mozaffari
FRONTIERS IN CHEMISTRY
(2020)
Article
Chemistry, Multidisciplinary
Marzieh Alizadeh, Parviz Aberoomand Azar, Sayed Ahmad Mozaffari, Hassan Karimi-Maleh, Ali-Mohammad Tamaddon
FRONTIERS IN CHEMISTRY
(2020)
Article
Energy & Fuels
Mahsa Seifpanah Sowmehesaraee, Maryam Ranjbar, Mohammad Abedi, Seyed Ahmad Mozaffari
Summary: The study found that adding 2% of zinc metal-organic framework in perovskite solar cells can significantly improve device performance, including increasing current density and Fill-Factor, and achieving more than 90% efficiency enhancement.
Article
Electrochemistry
Sayed Ahmad Mozaffari, Seyed Heydar Mahmoudi Najafi, Zahra Norouzi
Summary: A hierarchical NiO@Ni(OH)(2) nanoarrays were synthesized and showed high specific capacitance and long-term cycling stability, demonstrating that covering metal oxide channels with metal hydroxide flakes could serve as a new design strategy for high-performance supercapacitor electrode materials.
ELECTROCHIMICA ACTA
(2021)
Article
Engineering, Environmental
Mohammad Hossein Salmani, Mohammad Abedi, Sayed Ahmad Mozaffari, Amir Hossien Mahvi, Ali Sheibani, Mahrokh Jalili
Summary: The experimental results suggest that the synthesized iron nanoparticles are effective in removing arsenite anions from aqueous solutions through reduction and chemical adsorption mechanisms. The efficiency of arsenite removal depends on solution pH, adsorbent dose, and initial concentration of arsenite. The thermodynamic study indicates that the adsorption process is spontaneous and endothermic.
JOURNAL OF ENVIRONMENTAL HEALTH SCIENCE AND ENGINEERING
(2021)
Article
Chemistry, Applied
Sahere Khazaei, Sayed Ahmad Mozaffari, Fateme Ebrahimi
Summary: This paper presents a method for developing a reliable glucose biosensor using polymers to create an efficient enzyme loading environment. The fabricated platform showed a wide linear range and low detection limit for glucose determination, demonstrating its potential for real sample analysis. The study also suggests that this fabrication method can be applied to immobilize other enzymes and biomolecules with low isoelectric points.
CARBOHYDRATE POLYMERS
(2021)
Article
Materials Science, Multidisciplinary
Zahra Norouzi, Seyed Heydar Mahmoudi Najafi, Sayed Ahmad Mozaffari
Summary: Silver-loaded carbon sphere-in-rod 3D architectures were synthesized in this study, showing improved electrical conductivity of the hybrid electrode and high specific capacitance with a wide operating potential window. The green, low-cost, and scalable approach of constructing a hybrid electrode material using saccharide and noble metal building blocks was demonstrated in this work.
DIAMOND AND RELATED MATERIALS
(2022)
Article
Chemistry, Analytical
Motahhare Emadoddin, Sayed Ahmad Mozaffari, Fateme Ebrahimi
Summary: The NP-ZnO/PVA nanocomposite provides a fouling-free surface for selective dopamine determination in high concentrations, showing great potential as a material for dopamine electrochemical sensing platforms.
JOURNAL OF PHARMACEUTICAL AND BIOMEDICAL ANALYSIS
(2021)
Review
Energy & Fuels
Mahshid Ershadi, Mehran Javanbakht, Zahra Kiaei, Hoda Torkzaban, Sayed Ahmad Mozaffari, Farshad Boorboor Ajdari
Summary: Patent analysis is a critical means to extract technical and statistical information for users in related fields. This research reviews patents related to the usage of graphene-based materials and Fe3O4 nanoparticles in lithium-ion battery negative electrodes. China, the USA, and South Korea are leading the advancement of Fe3O4/graphene nanocomposites as anode materials.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Chemistry, Analytical
Fateme Ebrahimi, Hossein Salar Amoli, Sayed Ahmad Mozaffari
Summary: In this study, a novel approach for determining lactoferrin was developed using a mixed monolayer of MOP/3-sulfanylpropan-1-ol as a biosensing platform. Various techniques were employed to track the platform fabrication process and evaluate its efficiency for lactoferrin determination. The results showed that the developed platform exhibited good selectivity and sensitivity towards lactoferrin detection, and was successfully applied for determining lactoferrin in colostrum samples.
SENSORS AND ACTUATORS B-CHEMICAL
(2022)
Article
Chemistry, Physical
Mahshid Ershadi, Mehran Javanbakht, Daniel Brandell, Sayed Ahmad Mozaffari, Ali Molaei Aghdam
Summary: This study successfully synthesized amino-functionalized mesoporous Fe3O4/graphene-based nanocomposites, which showed good cycling performance and high reversible capacity in lithium-ion batteries.
APPLIED SURFACE SCIENCE
(2022)
Article
Electrochemistry
Maryam Hosseinzadeh, Sayed Ahmad Mozaffari, Fateme Ebrahimi
Summary: In this study, a rational design of an efficient asymmetric CDI system was reported. The system utilized three-dimensional graphene nanostructures and MnO2, NiO nanomaterials to prepare nanocomposite electrodes. The experiment results showed that the asymmetric CDI system had high electrosorption capacity and good regeneration performance, making it suitable for brackish water purification.
ELECTROCHIMICA ACTA
(2022)
Article
Chemistry, Physical
Zahra Norouzi, Sayed Ahmad Mozaffari, Seyed Heydar Mahmoudi Najafi
Summary: In this study, three-dimensional hierarchical porous Ni(OH)2 nanoflakes were prepared using successive chemical bath deposition (CBD) on CuO-doped MnO2 nano-dandelions, resulting in MnO2/CuO@Ni(OH)2 nanorod-nanoflake clusters. The as-prepared electrode showed a high specific capacitance of 3800 mF cm-2 at 1.0 mA cm-2 and long cycle life. The superior electrochemical performances were attributed to the ideal ion transfer channels of radially grown 1D nanorods and the battery-type behavior of Ni(OH)2 nanoflakes, along with the CuO inner layer filling the Schottky barrier between MnO2 and Ni(OH)2. This work suggests a new design for metal oxide/hydroxides and demonstrates the potential of MnO2/CuO@Ni(OH)2 nanorod-nanoflake clusters as electrode materials for high-rate supercapacitors.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
