Article
Chemistry, Physical
Hongyun Qin, Haoyuan Li, Qiang Fu, Rujun Yu, Yang Zhao, Zhong Kang, Xia Chen, Ming Wang
Summary: This study investigates the hydrolysis performance of magnesium hydride (MgH2) in a self-made hydrolysis reactor. The results demonstrate that the hydrolysis reactor with a plate tower structure enables controllable continuous MgH2 hydrolysis, improving material distribution and liquid-solid mass transfer.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Review
Crystallography
Nuraini Ruslan, Muhammad Syarifuddin Yahya, Md Nurul Islam Siddique, Ashish Prabhakar Yengantiwar, Mohammad Ismail, Md Rabiul Awal, Mohd Zaki Mohd Yusoff, Muhammad Firdaus Asyraf Abdul Halim Yap, Nurul Shafikah Mustafa
Summary: Metal hydrides such as MgH2 and NaBH4 have high potential for solid-state hydrogen storage. However, a dehydrogenation process is required prior to hydrogen utilization. The hydrolysis method is a possible way to extract or generate hydrogen, but issues like passivation layer, high cost and sluggish self-hydrolysis can be overcome with the help of catalysts. Studies have shown that adding catalysts like chloride, oxide, fluoride, platinum, ruthenium, cobalt, and nickel can significantly enhance the amount of hydrogen released during the hydrolysis of MgH2 and NaBH4.
Article
Chemistry, Physical
Vasyl Berezovets, Andriy Kytsya, Ihor Zavaliy, Volodymyr A. Yartys
Summary: In this study, the hydrolysis of magnesium hydride in MgCl2 aqueous solutions was systematically studied, showing linear dependencies of hydrolysis rate, pH, and yield on the logarithm of MgCl2 concentration. The precipitates formed do not contain chlorine ions and consist solely of Mg(OH)2, with crystallite size increasing with MgCl2 content. A pseudo-homogeneous model best described the hydrolysis kinetics, and the presence of Mg(OH)2 was found to partially suspend the reaction.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Metallurgy & Metallurgical Engineering
Hai-chang Zhong, Chen-long Lin, Zi-yu Du, Chun-yan Cao, Chu Liang, Qing-rong Zheng, Le-yang Dai
Summary: LaF3 was doped to the Mg(Al) solid solution alloy to enhance hydrogen absorption and desorption. The results showed that the hydrogen storage kinetic properties were significantly improved in the Mg0.93Al0.07-5wt.%LaF3 nanocomposite, attributed to the reduction of activation energies.
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
(2022)
Article
Chemistry, Multidisciplinary
Xin Zhong, Ying Sun, Toshiaki Iitaka, Meiling Xu, Hanyu Liu, Russell J. Hemley, Changfeng Chen, Yanming Ma
Summary: This study reports the discovery of a new class of extremely hydrogen-rich clathrate superhydride MH18 with a predicted critical superconducting temperature (Tc) up to 330 K, well above room temperature. The bonding and electronic properties of these superhydrides closely resemble atomic metallic hydrogen, and they represent the highest Tc found in a thermodynamically stable hydride compound.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2022)
Article
Physics, Multidisciplinary
Elliot Snider, Nathan Dasenbrock-Gammon, Raymond McBride, Xiaoyu Wang, Noah Meyers, Keith V. Lawler, Eva Zurek, Ashkan Salamat, Ranga P. Dias
Summary: The recent observation of room-temperature superconductivity is expected to drive the discovery of new, dense, hydrogen-rich materials, including rare earth metal superhydrides. A study reported the synthesis of a yttrium superhydride that exhibits superconductivity at a critical temperature of 262 K at 182 ± 8 GPa, with the assistance of a palladium thin film. It was found that the phonon-mediated superconductivity is established by the observation of zero resistance, an isotope effect, and the reduction of T-c under an external magnetic field, with the upper critical magnetic field at 103 T at zero temperature.
PHYSICAL REVIEW LETTERS
(2021)
Article
Green & Sustainable Science & Technology
S. Al Bacha, A. Thienpont, M. Zakhour, M. Nakhl, J. -L. Bobet
Summary: The study involved using ball-milled magnesium powder with the addition of graphite and nickel for hydrogen production through hydrolysis, resulting in rapid reaction speed and high purity. Lowering the pH of the hydrolysis solution reduces the activation energy of the reaction. Hydrolysis of magnesium-based materials is considered a clean hydrogen production technique under standard pressure and ambient temperature conditions.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Chemistry, Physical
Maria Rodriguez, Guillermina Urretavizcaya, Jean-Louis Bobet, Facundo J. Castro
Summary: This paper discusses the reprocessing of Mg scraps from sacrificial anodes manufacturing by mechanical milling for the production of H2 by hydrolysis. The effects of iron and graphite as additives to improve the hydrolysis reaction are presented. It has been found that pre-milling the scraps with 1.5 wt% of Fe for 10 hours followed by an extra milling with 5 wt% of graphite for 1 hour produces the best results. The addition of Fe accelerates the reaction rate by inducing microgalvanic coupling with Mg, while graphite acts as a process control agent during milling and contributes to size reduction of the material, resulting in faster H2 production.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Maria Rodriguez, Franco Niro, Guillermina Urretavizcaya, Jean-Louis Bobet, Facundo J. Castro
Summary: Magnesium-based wastes were reprocessed by mechanical milling and used to produce hydrogen through hydrolysis. The material evolved during reprocessing and hydrogen was generated in a MgCl2 solution at 24 degrees C. The particle size, crystallite size, microstrain, and phase abundance changed during mechanical processing. Hydrogen yields of 70-90% were obtained after 30 min of reaction, depending on milling time. The reaction kinetics improved with milling time, and the hydrolysis curves could be fitted with a model limited by a three-dimensional geometric contraction process. Mg17Al12 and Fe played a role in promoting hydrogen production during the reaction.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Materials Science, Multidisciplinary
Hulei Yu, Yue Chen
Summary: In this study, the doping effects on newly proposed penta-graphene-like hydrides ZrH10 and HfH10 were explored using first-principles calculations. It was found that hole doping eliminates the imaginary phonon frequencies of P63/mmc ZrH10 and HfH10 at lower pressures, leading to more accessible superconductivity. On the other hand, electron doping softens the phonons at high pressures, increasing the electron-phonon coupling and the superconducting critical temperature (Tc).
Article
Multidisciplinary Sciences
Zhiwen Li, Xin He, Changling Zhang, Xiancheng Wang, Sijia Zhang, Yating Jia, Shaomin Feng, Ke Lu, Jianfa Zhao, Jun Zhang, Baosen Min, Youwen Long, Richeng Yu, Luhong Wang, Meiyan Ye, Zhanshuo Zhang, Vitali Prakapenka, Stella Chariton, Paul A. Ginsberg, Jay Bass, Shuhua Yuan, Haozhe Liu, Changqing Jin
Summary: Researchers have discovered superconductivity in calcium superhydrides with a critical temperature above 210 K, which is of great interest for finding superconducting materials near room temperature. The study analyzed the material's superconductivity through high-pressure electric conductance measurements, estimating an upper critical field of 268 T and a GL coherent length of 11 angstrom.
NATURE COMMUNICATIONS
(2022)
Article
Multidisciplinary Sciences
Jingkai Bi, Yuki Nakamoto, Peiyu Zhang, Katsuya Shimizu, Bo Zou, Hanyu Liu, Mi Zhou, Guangtao Liu, Hongbo Wang, Yanming Ma
Summary: The substitutional alloy (La,Ce)H-9 demonstrates a significant increase in the critical temperature Tc of superconducting superhydrides, reaching up to 148 K at pressures below 1 megabar. This finding highlights the potential of alloying as an effective tool to enhance Tc in superhydrides.
NATURE COMMUNICATIONS
(2022)
Article
Chemistry, Physical
Noratiqah Sazelee, Muhamad Faiz Md Din, Mohammad Ismail, Sami-Ullah Rather, Hisham S. S. Bamufleh, Hesham Alhumade, Aqeel Ahmad Taimoor, Usman Saeed
Summary: Hydrogen is an ideal energy carrier for the future due to its high energy density and cleanliness. The safe and affordable storage of hydrogen is a crucial step in the development of the hydrogen economy. Magnesium hydride (MgH2) is considered for its large storage capacity, good reversibility, and low cost. However, it has limitations such as high desorption temperature and slow kinetics. Adding cobalt lanthanum oxide (LaCoO3) to MgH2 through ball milling improves its hydrogen storage performance.
Article
Energy & Fuels
Haoyuan Li, Qiang Fu, Hongyun Qin, Xia Chen, Qicheng Zhang, Hui Zhang, Shoudong Wang, Zixu Dong, Ming Wang
Summary: In this study, the controllable and continuous MgH2 hydrolysis was achieved by using an optimized porous filter element, which provides valuable reference for continuous MgH2 hydrolysis.
Article
Energy & Fuels
Lei Wang, Tong Su, Ning Wang, Yujun Chai
Summary: This study reveals the reaction mechanism of magnesium with water in different salt solutions and explores its potential application in fuel cells.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Metallurgy & Metallurgical Engineering
Shaoyang Shen, Liuzhang Ouyang, Jiangwen Liu, Hui Wang, Xu-Sheng Yang, Min Zhu
Summary: A one-step high-energy ball milling process is used to in situ form ultrafine Ni nanoparticles and combine them with expanded graphite to synthesize a MgH2Ni-EG nanocomposite. The nanocomposite exhibits excellent hydrogen storage performance at both high and room temperatures.
JOURNAL OF MAGNESIUM AND ALLOYS
(2023)
Article
Materials Science, Multidisciplinary
Wanting Sun, Jiasi Luo, Yim Ying Chan, J. H. Luan, Xu-Sheng Yang
Summary: In this study, a laser surface remelting technique was used to fabricate a heterogeneous gradient nanostructured layer on an austenitic Hadfield manganese steel. The layer exhibited a gradient refinement process and had a core-shell structure with ultra-strong mechanical properties due to the extra work hardening ability induced by the strength-ductility synergy in the gradient nanostructure.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Ziquan Li, Jinquan Wen, Yuqing Cai, Fengting Lv, Xu Zeng, Qian Liu, Titus Masese, Chuanxiang Zhang, Xusheng Yang, Yanwen Ma, Haijiao Zhang, Zhen-Dong Huang
Summary: A new Bi-Ti-EG compound is reported as a high-capacity and stable anode material for potassium storage. It possesses a long-range disordered layered framework that can facilitate electrolyte ingress into Bi nanoparticles, thereby enhancing the storage capacity and cycling stability.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Review
Chemistry, Physical
Yongyang Zhu, Jianding Li, Limei Yang, Xu-Sheng Yang, Qing Zhou, Renheng Tang, Shaoyang Shen, Liuzhang Ouyang
Summary: Metal borohydrides have high hydrogen storage capacities and are extensively studied. However, developing a low-cost and high-efficiency closed loop of hydrolysis and regeneration is challenging. This work provides an overview of the latest advances in hydrolysis and regeneration processes of Li(Na)BH4 and Mg(BH4)2, with a focus on NaBH4 hydrolysis and regeneration. The development of catalysts, synthesis techniques, and reducing agents for NaBH4 regeneration are discussed. The use of low-cost transition metal-based catalysts has shown great potential for catalyzing the hydrolysis reaction.
JOURNAL OF POWER SOURCES
(2023)
Article
Metallurgy & Metallurgical Engineering
Rongjian Shi, Yanqi Tu, Liang Yang, Saiyu Liu, Shani Yang, Kewei Gao, Xu-Sheng Yang, Xiaolu Pang
Summary: This study explored the influence of pre-strain and microstructures on the hydrogen trapping behaviors in 1-GPa high-strength martensitic steel. The results showed that the trapped reversible and trapped irreversible hydrogen contents significantly increased after a pre-strain of 5%. The microstructural evolution revealed that the presence of concomitant dislocation cell-twin duplex microstructure and tangled dislocations contributed to the enhanced hydrogen trapping.
ACTA METALLURGICA SINICA-ENGLISH LETTERS
(2023)
Article
Chemistry, Multidisciplinary
Yongyang Zhu, Shaoyang Shen, Xu-Sheng Yang, Liming Zeng, Gary Tsui, Zheng-Long Xu, Qing Zhou, Renheng Tang, K. C. Chan
Summary: This study proposes a cost-effective method to regenerate LiBH4 by ball milling hydrous lithium metaborate with low-cost Mg-based alloys. The introduction of light rare-earth metals into Mg improves the regeneration kinetics of LiBH4 by facilitating the breakage of B-O and conversion of H+ into H-. A yield of 40% can be achieved for LiBO2 center dot 2H(2)O-CeMg12 system with a relatively short ball milling duration of 10 hours. The optimized regeneration of LiBH4 is believed to be efficient and economical, utilizing an intrinsic hydrogen source in LiBO2 center dot 2H(2)O and cheap reducing agents. This finding is expected to promote the widespread use of LiBH4 for hydrogen storage.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2023)
Article
Materials Science, Multidisciplinary
Shaojie Lv, Hong-Hui Wu, Kaiyang Wang, Jiaming Zhu, Shuize Wang, Guilin Wu, Junheng Gao, Xu-Sheng Yang, Xinping Mao
Summary: The austenite to ferrite phase transformation is a crucial structural change in steel production, with the ferrite morphology and grain size significantly impacting the mechanical properties of steel materials. This study investigates the effects of cooling rate, prior austenite grain size (PAGS), and Mn content on the microstructure evolution of the austenite-to-polygonal ferrite phase transformation using a multi-phase-field model. The findings reveal that higher cooling rates enhance the driving force for the phase transformation and delay the process. Decreasing PAGS increases the proportion of austenite grain boundaries, providing more nucleation sites for polygonal ferrite and resulting in refined grain size. Furthermore, increased Mn content leads to significant grain refinement by reducing the transformation temperature. This work provides valuable insights for adjusting and designing desired microstructures of polygonal ferrite to enhance the mechanical performance of steel.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Nanoscience & Nanotechnology
Yuqing Cai, Wenjing Liu, Fangfei Chang, Su Jin, Xusheng Yang, Chuanxiang Zhang, Ling Bai, Titus Masese, Ziquan Li, Zhen-Dong Huang
Summary: In this study, Ni, Fe, Mg, and Ti elements were introduced into Mn-based layered oxide to design a high-entropy compound HE-KMO, which demonstrated exceptional rate capability and cyclic stability.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Multidisciplinary
Ling Wang, Dongxuan Li, Yawen Huang, Ruiqi Mao, Boqing Zhang, Fengxiong Luo, Peiyang Gu, Ping Song, Xiang Ge, Jian Lu, Xusheng Yang, Yujiang Fan, Xingdong Zhang, Kefeng Wang
Summary: In this study, enhanced in situ mineralization through the combination of enzymatic and anion-boosted mineralization is applied, resulting in improved mineralization efficiency, mineral content, and mechanical properties. The mechanism of mineralization enhancement is investigated through computational calculations and in vitro mineralization experiments. The strategy is shown to have potential applications in cranial bone repair.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Environmental Sciences
Jiahui Zhao, Lin Cao, Xiao Wang, Haoling Huo, Huaijun Lin, Qiwei Wang, Xusheng Yang, Florian Vogel, Wei Li, Zhidan Lin, Peng Zhang
Summary: Metal organic frameworks (MOFs) have great potential in improving the performance of water treatment membranes. In this study, novel nanoparticles based on both nanoporous MOFs and organic PDA layer were used as dopants for PES ultrafiltration membranes. The resulting membranes showed enhanced permeability and anti-fouling properties, and demonstrated promising applications in oily sewage remediation.
ENVIRONMENTAL RESEARCH
(2023)
Article
Materials Science, Multidisciplinary
Shaojie Lv, Hong-Hui Wu, Kaiyang Wang, Chaolei Zhang, Jiaming Zhu, Shuize Wang, Guilin Wu, Junheng Gao, Xu-Sheng Yang, Xinping Mao
Summary: In this study, the austenitic-pearlite transformation and its effects on microstructure evolution were investigated using a CALPHAD-based model. The results showed that the isothermal transformation temperature, cooling rate, and Mn content significantly influenced the pearlite transformation process, and the multi-component diffusion played a critical role in pearlite growth.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Materials Science, Multidisciplinary
Dexin Zhu, Kunming Pan, Hong-Hui Wu, Yuan Wu, Jie Xiong, Xu-Sheng Yang, Yongpeng Ren, Hua Yu, Shizhong Wei, Turab Lookman
Summary: This study investigates the intrinsic factors influencing the ductile-to-brittle transition temperatures (DBTT) of Fe-Al intermetallic compounds and develops machine learning strategies for accurate prediction of DBTT. By utilizing selected features, surrogate models achieve a high accuracy of 95% and a functional expression capturing the relationship between DBTT and features is derived through symbolic regression.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Chemistry, Physical
Kashif Naseem, Hao Zhong, Wenbin Jiang, Mili Liu, Chengguang Lang, Kang Chen, Liuzhang Ouyang, Jianmei Huang
Summary: In this study, a low-cost Mo2C catalyst was ball milled with Mg to produce a Mg-Mo2C composite, which exhibited rapid hydrolysis in seawater, generating over 851 mL g(-1) hydrogen in 10 min. The Mo2C maintained a high catalytic activity after recycling, and a hydrogen yield of over 90% after five cycles. The study also revealed that the micro galvanic cell and well-combined Mg-Mo2C interface formed during ball milling significantly enhanced the hydrolysis performance.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Chemistry, Multidisciplinary
Yanyu Chen, Jie Li, Yingfei Yang, Junjie Yang, Huaijun Lin, Qiwei Wang, Xusheng Yang, Yuying Meng, Wei Li, Zhidan Lin, Peng Zhang
Summary: A novel porous polymer was prepared using the Pickering high internal phase emulsion (HIPE) template method for efficient oil-water separation from sewage. The addition of OTS-modified carbon nanotubes and surfactants improved the stability, mechanical properties, and separation efficiency of the polyHIPE. The 1%OTS-CNT polyHIPE exhibited high oil absorption capacity and maintained absorption efficiency even after multiple reapplications. Furthermore, the polymer showed superior antibacterial properties against E. coli and S. aureus.
Article
Engineering, Environmental
Yongyang Zhu, Xubo Li, Xu-Sheng Yang, Pengyun Chen, Gary Chi-Pong Tsui, Zheng-Long Xu, Renheng Tang, Fangming Xiao, Kangcheung Chan
Summary: Researchers have developed a low-cost BCC solid solution alloy with excellent activation performance and high effective hydrogen desorption capacity by using a new compositionally complex doping strategy. The synergistic effect of Nb, Fe, Co, Ni, and Mn elements has been confirmed to improve hydrogen storage performance.
CHEMICAL ENGINEERING JOURNAL
(2023)
