Article
Materials Science, Ceramics
H. Zhou, Z. Ding, Y. A. Chen, Z. Q. Lan, S. F. Guo, F. Spieckermann, V. Zadorozhnyy, J. Tan, F. S. Pan, J. Eckert
Summary: The hydrogen storage properties of amorphous and crystalline Mg85Ni5Y10 alloys were compared, and the melt-spun alloy showed higher storage capacity and faster kinetics than the induction-melted alloy. The reversible storage capacity of the melt-spun alloy was 4.2 wt% H2, while the induction-melted sample had 3.8 wt% at 200 degrees C. Furthermore, the melt-spun alloy could release 4.1 wt% H2 within 30 min at temperatures above 275 degrees C, close to its theoretical hydrogen storage capacity of 4.2 wt%.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2023)
Article
Chemistry, Multidisciplinary
Marin Nikolic, Alessia Cesarini, Emanuel Billeter, Fabian Weyand, Pavel Trtik, Markus Strobl, Andreas Borgschulte
Summary: This study investigates the working conditions of commercial Ni-mischmetal hydride batteries using non-destructive and high-resolution methods. By combining neutron radiography and tomography with electrical monitoring of the state of charge, the exchange and transport of hydrogen can be tracked in real time. The study reveals that the charging state of the battery affects the generation of hydrogen gas.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Green & Sustainable Science & Technology
Mohamed Tliha, Abbes Kaabi, Chokri Khaldi, Abdessalem Dhahri, Nouredine Fenineche, Omar ElKedim, Jilani Lamloumi
Summary: The physico-chemical performance of the novel anode LaGaO3 for Ni/MH accumulators was studied using the electrochemical impedance spectroscopy (EIS) method. The results show that the current density of the oxide increases quickly during the activation process, while the decrease in charge transfer rate may be attributed to the corrosion of the electrode/electrolyte interface.
ENVIRONMENTAL PROGRESS & SUSTAINABLE ENERGY
(2023)
Article
Chemistry, Physical
Jianling Huang, ChengWei Liao, Hui Wang, YuJun Zhao, Liuzhang Ouyang, Jiangwen Liu, Min Zhu
Summary: This study explores a high concentration TMAH electrolyte with a special hydrate structure, which can solve the corrosion issue of Mg-based alloy anodes in conventional electrolytes and improve their cycle life and capacity. Additionally, by adding Cu(OH)2 in TMAH electrolyte and forming a Cu coating on the electrode surface during charging, the corrosion of the electrode is further suppressed, and the reversible capacity and rate capability of the electrode are improved.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Weiqing Jiang, Yujie Chen, Mengru Hu, Chengfu Zeng, Chu Liang
Summary: The rapid development of Ni-MH batteries requires advanced hydrogen storage alloys as negative electrodes, and rare earth-Mg-Ni-based hydrogen storage alloys with superlattice structures are attracting attention due to their high capacity and good electrochemical properties. Preparation techniques and composition optimization are highlighted as key factors in tuning the electrochemical performance of these alloys. New ideas and approaches are needed for developing high-performance Ni-MH batteries with higher energy density and longer cycle life.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Miao Guo, Huiping Yuan, Yuru Liu, Lijun Jiang
Summary: The partial substitution of Sm for Y in La-Y-Ni-based alloys improves their anti-corrosion and anti-pulverization performances, thereby increasing cycle life. Compared to (RE0.85Mg0.15)(2)(NiAl)(7) alloys, RE-Y-Ni-based alloys exhibit better crystal structure stability, but worse gas-solid and electrochemical cyclic stability.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Energy & Fuels
Maryam Ostadebrahim, Omran Moradlou
Summary: A comparative study was conducted on the effect of transition metal cations in LaMO3 perovskite-type structures on their electrochemical hydrogen sorption/storage process. LaFeO3 nanoparticles showed the highest discharge capacity of 13,500 mAh/g due to their higher surface reactivity and faster electron transfer. The electrode demonstrated superior cycling stability and could be a potential candidate for battery applications.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Metallurgy & Metallurgical Engineering
Ze-ming Yuan, Zhen Qi, Ting-ting Zhai, Hong-zhang Wang, Hai-yan Wang, Yang-huan Zhang
Summary: The effects of La substitution for Ti on the microstructure, hydrogen storage kinetics and thermodynamics of TiFe-type Ti-Fe-Mn-based alloy were investigated. La substitution promotes the formation of micro-defects in the alloys, facilitating hydrogen diffusion and improving hydrogen storage kinetics properties.
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
(2021)
Article
Chemistry, Physical
Xiangyang He, Wei Xiong, Li Wang, Baoquan Li, Jin Li, Shujuan Zhou, Jiaxuan Li, Huizhong Yan
Summary: This paper investigates the evolution law of different phases in La-Y-Ni-based hydrogen storage alloys and synthesizes three single-phase alloys. The results demonstrate that La2Y4Ni21 alloy has the highest hydrogen storage capacity and all the target alloys exhibit excellent electrochemical activation ability and cycle stability. These findings provide theoretical guidance and technical support for the development of La-Y-Ni-based hydrogen storage alloys.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Electrochemistry
Hang Lu, Yanan Guo, Qing Wang, Anyi Zhang, Yuan Li, Ning Xi, Xiaomei Zhu, Shumin Han, Lu Zhang
Summary: La-Mg-Ni-based alloys with a novel AB(4)-type superlattice structure are proposed as potential anode materials for Ni/MH batteries. The formation of the AB(4)-type phase during annealing and its effect on electrochemical characteristics are studied. The presence of the AB(4)-type phase leads to a higher discharge capacity at both low and high rates, as well as improved cycling stability and tolerance at low temperatures.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2023)
Article
Energy & Fuels
Maryam Sadat Morassaei, Ali Salehabadi, Omid Amiri, Ahmad Akbari, Masoud Salavati-Niasari
Summary: The study presents the synthesis of CuCe2(MoO4)4 nanostructures and silicate layers for high-density hydrogen storage, exhibiting superior electrochemical performance with a maximum discharge capacity of -3750 mAh/g and efficiency of about 70% in an alkaline medium. The nanocomposite shows promise as a host material for electrochemical hydrogen storage systems, meeting the U.S. Department of Energy's hydrogen storage targets.
Article
Chemistry, Physical
Zhaoyu Liu, Jiaxi Liu, Sheng Wei, Yongpeng Xia, Riguang Cheng, Lixian Sun, Fen Xu, Pengru Huang, Yiting Bu, Jian Cheng, Tianhao Zhou, Hongge Pan, Zhong Cao, Julan Zeng, Hans Jurgen Seifert, Shuhui Sun, Gaixia Zhang
Summary: In this study, Ni/C nanoparticles anchored on Ti3C2Tx nanosheets were introduced into LiAlH4 to investigate its catalytic effect. It was found that the Ni/C@Ti3C2 composite can effectively catalyze the dehydrogenation and rehydrogenation reactions of LiAlH4, lowering the activation energy and improving the hydrogen adsorption and release kinetics.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Energy & Fuels
Ali Salehabadi, Norli Ismail, Norhashimah Morad, Mohd Rafatullah, Mardiana Idayu Ahmad
Summary: Polymeric materials have been highlighted in hydrogen storage technologies due to their reversible capacity, high surface area, and thermomechanical stabilities.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2021)
Article
Nanoscience & Nanotechnology
Parisa Edalati, Abbas Mohammadi, Yongtao Li, Hai-Wen Li, Ricardo Floriano, Masayoshi Fuji, Kaveh Edalati
Summary: This study investigates the use of high-entropy alloys as new anode materials for Ni-MH batteries, with findings showing optimal Ti/Zr ratios for the highest storage capacity and fastest activity. High-entropy alloys demonstrate potential as anode materials for Ni-MH battery applications.
SCRIPTA MATERIALIA
(2022)
Article
Energy & Fuels
Xiang Chen, Aihua Chu, Dan Li, Yinnan Yuan, Xueliang Fan, Yelin Deng
Summary: This study investigates the cycle life degradation characteristics of Ni-MH batteries in hybrid electric vehicles and establishes an empirical model of cycle life based on data from real-world driving settings, verifying the model's ability to characterize the battery's decay process effectively.
JOURNAL OF ENERGY STORAGE
(2021)