Article
Energy & Fuels
M. S. Alias, S. K. Kamarudin, A. M. Zainoodin, M. S. Masdar
Summary: This study presents a surface characterization of the modified MPL of TiO2-CNF-CB and discusses in detail the mechanism on the power density drop due to increment of methanol concentration. The study also tests the performance and stability of the modified MPL. The results show that the mixture of TiO2-CNF-CB improved the stability of the DMFC over long-term performance testing.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2021)
Article
Chemistry, Physical
Wu Yujing, Zhou Hongxiu, Zhang Ao, Zhao Leqing
Summary: The research shows that flowing electrode direct methanol fuel cell (FEDMFC) effectively reduces methanol crossover rate while maintaining high power densities. Increasing flow rate can decrease crossover rate but will affect efficiency and stability, with optimal flow rate controlled at 1-3 sccm.
JOURNAL OF POWER SOURCES
(2022)
Article
Nanoscience & Nanotechnology
Yuzhi Ke, Jinguang Li, Wei Yuan, Yu Chen, Bote Zhao, Zhenghua Tang, Xuyang Wu, Shiwei Zhang, Yong Tang
Summary: Inspired by the structure of mangrove roots, a novel carbon nanotube film was developed as a functional interface for micro-direct methanol fuel cells, demonstrating ultralightweight, high porosity, and excellent electrical conductivity. The film significantly improved oxygen transport and water management, leading to a 88.6% increase in peak power density compared to traditional carbon nanotube arrays.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Energy & Fuels
Kaiyuan Zuo, Zhenyu Yuan
Summary: This article presents a high concentration adaptive direct methanol fuel cell based on a dual-cavity structure, and investigates its performance under different supply concentrations of methanol solution to determine optimal working conditions. The advantages of the anode double-cavity structure in high concentration and high energy density fuel supply are demonstrated, along with the effects of various materials on cell performance through experimental investigation.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2021)
Article
Energy & Fuels
Hazlina Junoh, Juhana Jaafar, Nik Abdul Hadi M. Nordin, Ahmad F. Ismail, Mohd H. D. Othman, Mukhlis A. Rahman, Farhana Aziz, Norhaniza Yusof, Syarifah Noor S. Sayed Daud
Summary: Porous poly ether sulfone (PES) membranes were prepared using two different solvents via dry/wet non-solvent phase inversion techniques, with membranes prepared using DMAc at 3 minutes solvent evaporation time showing desirable properties for proton conduction and methanol resistance.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2021)
Article
Chemistry, Multidisciplinary
Dacheng Zhang, Kang Li, Ziten Wang, Zhengang Zhao
Summary: In the structure of mu DMFC, the anode diffusion layer composed of reduced graphene oxide/carbon paper (rGO/CP) plays a crucial role in improving fuel cell performance. The rGO/CP not only reduces the resistance of the cell, but also decreases methanol crossover, enabling the cell to operate stably at higher concentrations for a longer duration.
Article
Chemistry, Physical
Youngseung Na, Prashant Khadke, Andreas Gluesen, Nicola Kimiaie, Martin Mueller, Ulrike Krewer
Summary: The electrochemical behavior of direct methanol fuel cells (DMFCs) is influenced by the concentration of methanol. Monitoring the methanol concentration in the fuel circulation loop is crucial for the efficient operation of DMFC systems. This study presents a robust electrochemical methanol sensing technique that is not affected by temperature, cell degradation, and membrane electrode assembly (MEA) type. The proposed method achieves high accuracy and is expected to enhance the reliability and control logic of DMFC systems.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Energy & Fuels
Yinghui Zhang, David P. Wilkinson, Fariborz Taghipour
Summary: The study found that in an air-breathing micro direct methanol fuel cell, having anode catalysts only on the proton-exchange membrane showed superior performance compared to having anode catalysts on both the membrane and channel walls. Additionally, increasing the anode catalyst loading on channel walls resulted in decreased cathode potential, impacting overall fuel cell performance.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2021)
Article
Thermodynamics
JiaChen Zhu, Juan Yu, Lu Yin, Wenli Yang, Haining Liu, GaoFeng Wang, LuWen Wang, Wei Cai
Summary: In this study, a flexible integrated direct methanol fuel cells (μ DMFCs) array was demonstrated, featuring flexibility and high energy density. With a novel design, higher power density can be achieved during bending. The application of this technology can greatly promote the use of μ DMFCs on flexible and wearable electronics.
ENERGY CONVERSION AND MANAGEMENT
(2022)
Article
Engineering, Chemical
Shenghua Fu, Wenzhong Lou, Jingkui Wang, Tongan Ji, Chubao Li, Zhaohui Chen
Summary: The study investigated the impact of micro/nano aluminum powder (MNAP) cloud concentration on fuel air explosive (FAE) detonation. A dynamic concentration measurement method based on ultrasonic transducers was developed, showing high precision and real-time response, with results consistent with computational simulations, and indicating better distribution characteristics of aluminum nanoparticles.
Article
Chemistry, Analytical
Chaoran Liu, Sanshan Hu, Lu Yin, Wenli Yang, Juan Yu, Yumin Xu, Lili Li, Gaofeng Wang, Luwen Wang
Summary: This study analyzed and discussed the effect of an anode composite electrode on the performance of a micro direct methanol fuel cell, focusing on the catalyst layer and micro-porous layer. It was found that optimizing the preparation under specific conditions can improve the performance of the fuel cell.
Article
Chemistry, Physical
Bincy George Abraham, Raghuram Chetty
Summary: An air breathing direct methanol fuel cell (AB-DMFC) with a unique architecture was designed and optimized for high performance, utilizing titanium mesh as a catalyst support and optimizing the configuration of the anode and cathode. The study also extended the single cell AB-DMFC architecture to 2-cell and 6-cell mini-stacks, which were used to power a small portable device.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Physical
Makson Rangel de Melo Rodrigues, Rayse Machado Ferreira, Fellipe dos Santos Pereira, Felipe Anchieta e Silva, Augusto Cesar Azevedo Silva, Hector Aguilar Vitorino, Jaldyr de Jesus Gomes Varela Junior, Auro Atsushi Tanaka, Marco Aurelio Suller Garcia, Thenner Silva Rodrigues
Summary: The study revealed the best design for obtaining AgPt nanostructures through theoretical simulations, which were successfully prepared experimentally and showed excellent performance for oxygen reduction reaction. The material exhibited a remarkable tolerance for methanol and high stability, with a first-electron transfer mechanism suggested as the rate-determining step on the catalyst's surface.
Article
Chemistry, Multidisciplinary
Li Liang, Zuo Zicheng, He Feng, Jiang Zhongqing, Li Yuliang
Summary: An ultrathin layer of nitrogen-rich GDY film is prepared to retard methanol permeation in direct methanol fuel cells, significantly increasing selective suppression of methanol transfer and improving power performance and long-term stability of the cell.
CHEMICAL RESEARCH IN CHINESE UNIVERSITIES
(2021)
Article
Thermodynamics
Qian Xu, Wei Sun, Jiajia Zhang, Weiqi Zhang, Qiang Ma, Huaneng Su, Lei Xing
Summary: By incorporating a graphene layer and Nafion ionomer binder into the anode electrode, the performance of a direct methanol fuel cell under high-concentration fuel conditions can be effectively improved, including increased peak power density and reduced charge transfer resistance.
INTERNATIONAL JOURNAL OF GREEN ENERGY
(2021)
