Article
Electrochemistry
Hironori Nakajima, Asuka Shima, Mitsuhiro Inoue, Takayuki Abe, Hiroshige Matsumoto, Omar Samuel Mendoza-Hernandez, Yoshitsugu Sone
Summary: The Sabatier reaction, a method to convert CO2 into CH4 and H2O, is significant for renewable energy and CO2 recycling. This study developed a three-dimensional model to simulate the operation of a tandem cell consisting of a low-temperature Sabatier reactor and a proton exchange membrane water electrolyzer, and confirmed the thermal self-sustainability of the system through thermal analysis.
Article
Thermodynamics
Duncan A. Nowicki, Gerry D. Agnew, John T. S. Irvine
Summary: This article presents a conceptual design for a small-scale green ammonia plant, where ammonia synthesis is achieved by reacting hydrogen produced by a solid oxide electrolyzer with nitrogen purified from air using a series of solid electrolyte oxygen pumps. The system operates with an energetic efficiency of 52.12%, which is very close to a cryogenic ASU reference system achieving an efficiency of 52.89%. The specific energy consumption is 9.94 kWh/kgNH3. Although these results are promising, there are opportunities to further improve the system design, such as enhancing heat integration to utilize waste heat from the series of oxygen pumps for raising the steam required by the electrolyzer.
ENERGY CONVERSION AND MANAGEMENT
(2023)
Article
Chemistry, Physical
Guowei Weng, Song Lei, Rui Wang, Kun Ouyang, Jiale Dong, Xuanhe Lin, Jian Xue, Liang-Xin Ding, Haihui Wang
Summary: A high-efficiency ammonia synthesis technology has been developed using a CO2-tolerant La5.5WO11.25 d (LWO) membrane reactor, which improves the electrocatalytic nitrogen reduction reaction performance by coupling with hydrogen purification at intermediate temperatures. The produced protons from molecular hydrogen can be used for in situ ammonia synthesis through nitrogen hydrogenation. This promising electrochemical membrane reactor achieves superior ammonia synthesis performance with the highest Faradaic efficiency (FE) of 43.8% and corresponding ammonia rate of 231.1 mg h-1 cm -2 at 350°C. It provides a feasible direction to promote the development of the ammonia synthesis industry.
Article
Chemistry, Physical
Jie Yu, Jesus Gonzalez-Cobos, Frederic Dappozze, Nicolas Grimaldos-Osorio, Philippe Vernoux, Angel Caravaca, Chantal Guillard
Summary: In this study, a pioneering photoelectrolyser with a non-noble metal-based photoanode (WO3) was designed, tested and optimized for the valorization of glycerol. The system operated in near-neutral conditions using a proton-exchange membrane (PEM) and selectively oxidized glycerol on the anode while producing purified hydrogen on the cathode. The influence of light irradiation, external bias and cell temperature on the production rates of glyceraldehyde (GAD), dihydroxyacetone (DHA) and hydrogen was investigated, and the long-term stability of the photoelectrolyser was validated.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2023)
Article
Nanoscience & Nanotechnology
Tingting Yan, Yihui Zou, Xiaohui Zhang, Daohao Li, Xiangxin Guo, Dongjiang Yang
Summary: This research disrupts the high crystallinity of PVA by forming hydrogen bonds with natural agarose macromolecules, creating a three-dimensional network that offers high water retention and channels for optimized Li-O coordination bond formation. The AP-GPE shows excellent specific capacitance in SSCs, and the characteristics of agarose and -OH groups help enhance the safety of SSCs by reducing flammability.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Physical
Stefania Siracusano, Fabiola Panto, Stefano Tonella, Claudio Oldani, Antonino S. Arico
Summary: In this study, a reinforced Aquivion (R) membrane-based membrane-electrode assembly demonstrated superior performance and durability in polymer electrolyte membrane water electrolysis compared to a conventional extruded membrane-based assembly.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Energy & Fuels
Wencheng Liu, Yu Zhang, Xiaoxiao Zheng, Mingyang Wang, Xiaoling Ye, Benqing Liu, Lei Han, Yafei Ning, Yan Lu, Shilin Zhang, Hu Li, Xinyu Zhao
Summary: Flexible zinc-air batteries have attracted attention for their high energy density, low cost, and eco-friendliness, but they face challenges in terms of poor cycle life and electrolyte evaporation. Researchers have developed a novel gel polymer-based electrolyte strengthened with graphene oxide and cellulose nanofibers, which improves conductivity and mechanical properties. The sandwich-structured flexible zinc-air batteries with this electrolyte exhibit an extended cycle life and can function normally even under bending.
Article
Chemistry, Analytical
Zinan Zhi, Wanshuo Gao, Jiawei Yang, Chong Geng, Boxuan Yang, Chen Tian, Shurui Fan, Haoyi Li, Jinpo Li, Zhongqiu Hua
Summary: In this study, an amperometric electrochemical hydrogen sensor was developed using solid polymer electrolyte and screen-printed electrodes (SPE). The sensitivity was enhanced by modifying the carbon electrode with a Pt/C/Nafion film. It was shown that the electrochemical behavior of hydrogen and Pt nanoparticles involved single electron transfer in an anaerobic environment and coupling with oxygen in an aerobic environment. A solid amperometric gas sensor was also fabricated using 3D printing, a solid polymer electrolyte, and modified electrodes, resulting in a simple device fabrication process with significantly improved sensitivity.
SENSORS AND ACTUATORS B-CHEMICAL
(2022)
Article
Chemistry, Physical
Kun Tang, Jimin Fu, Mingzai Wu, Tao Hua, Jun Liu, Li Song, Haibo Hu
Summary: A novel hydrogel electrolyte consisting of dual-network crosslinked polymers has been developed for flexible solid-state Zn-air batteries, achieving significant improvements in energy efficiency and mechanical tolerance. The batteries exhibit enhanced cycle life and mechanical durability, showcasing promise for future practical applications.
Article
Chemistry, Physical
Ahmed Khouya
Summary: This work proposes a novel approach to hydrogen production using a polymer electrolyte membrane electrolysis powered by a renewable hybrid system. By establishing energy balances, it is found that the optimal performance of hydrogen production is achieved when the solar installation is three times oversized, with a levelized cost of hydrogen at 4.07 US$/kg for the optimal size.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Multidisciplinary
Roxanna S. Delima, Mia D. Stankovic, Benjamin P. MacLeod, Arthur G. Fink, Michael B. Rooney, Aoxue Huang, Ryan P. Jansonius, David J. Dvorak, Curtis P. Berlinguette
Summary: Electrocatalytic palladium membrane reactors (ePMRs) can be used to drive hydrogenation reactions selectively without the formation of H-2 gas, converting biomass derivative furfural into alcohol products. The use of bulky solvents with weak nucleophilicities was found to suppress the formation of side products, which is not compatible with standard electrochemical hydrogenation architectures.
ENERGY & ENVIRONMENTAL SCIENCE
(2022)
Review
Chemistry, Physical
Marita Piglowska, Beata Kurc, Maciej Galinski, Pawel Fuc, Michalina Kaminska, Natalia Szymlet, Pawel Daszkiewicz
Summary: This paper mainly discusses the various electrolytes used in electronic devices and the combustibility aspect, as well as the thermal runaway and explosiveness of lithium-ion batteries. Additionally, it introduces the use of different flame retardants to prevent the combustion of LIBs, and various flame tests for electrolytes.
Article
Engineering, Chemical
Haoan Fan, Zhecheng Fang, Xuezhi Zhao, Yangyang Hu, Bolong Li, Wulong Yang, Mian Li, Jianghao Wang, Xiuyang Lu, Weiyu Song, Jie Fu
Summary: This study proposes a viable continuous approach for maltose hydrogenation using a millimeter-scale Raney Ni in a trickle-bed reactor. The optimal reaction conditions were determined through a parametric study, resulting in high conversion of maltose and yield of maltitol. A detailed investigation of the reaction mechanism and the utilization of biomass-derived sugars demonstrates the potential of the continuous flow system based on a trickle-bed reactor in industrial applications.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2023)
Article
Engineering, Environmental
S. A. Muhmed, Juhana Jaafar, S. N. A. Ahmad, M. H. Mohamed, A. F. Ismail, H. Ilbeygi, M. H. D. Othman, Mukhlis A. Rahman
Summary: A novel organic-inorganic nanocomposite membrane incorporating sulfonated holey graphene oxide (SHGO) into the nanocrystalline cellulose/polyvinyl alcohol (NCC/PVA) matrix as a polymer electrolyte membrane (PEM) was prepared using a solution casting method. The introduction of sulfonic acid groups in graphene oxide (GO) resulted in sulfonated graphene oxide (SGO), and the hole effect of GO in SHGO significantly improved the proton conductivity of the membranes by facilitating proton transfer. The highest proton conductivity of 1.1 x 10-2 S cm-1 was achieved by NCC/PVA-SHGO-1.0 at 80℃ under 100% relative humidity (RH). Mechanical and chemical stability tests showed enhanced properties, although there was a slight increase in hydrogen permeation due to the hole effect. Increasing the loading of SHGO in NCC/PVA improved its properties and performance. At 80℃, under 100% RH, NCC/PVA-SHGO-1.0 exhibited the highest power density and current density of 31.4 mW/cm2 and 60.2 mA/cm2, respectively, which were three times higher than those of pristine NCC/PVA. This study demonstrates that incorporating SHGO into NCC/PVA membranes significantly improves their properties, performance, and durability, making them potential candidates for PEMs.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Chemistry, Multidisciplinary
Meng-Xuan Yu, Zhen-Yi Gu, Jin-Zhi Guo, Chun-Gang Wang, Xing-Long Wu
Summary: All-solid-state hybrid-ion batteries with a synergistic Na+/Li+ de/intercalation mechanism were designed and assembled using modified PEO-based solid polymer electrolyte, Na2V2(PO4)(2)O2F cathode, and Li metal anode. The batteries exhibited a high average working voltage and energy density, providing a new avenue for the development of high-safety and low-cost secondary batteries.
CHEMICAL COMMUNICATIONS
(2022)