Article
Chemistry, Physical
Shuhua Zhou, Wei Zhang, Wenfeng Wang, Yaokun Fu, Han Yu, Lu Zhang, Jianzheng Song, Ying Cheng, Shumin Han
Summary: A novel method involving cosintering of an organic material, pure Mg, and a hydriding combustion synthesis technique has been reported to prepare MgH2 with amorphous carbon, resulting in significantly improved dehydrogenation capacity and kinetics compared to pure MgH2.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
Xing-Qing Duan, Guang-Xu Li, Wen-Hui Zhang, Hui Luo, Hai-Mei Tang, Li Xu, Peng Sheng, Xin-Hua Wang, Xian-Tun Huang, Cun-Ke Huang, Zhi-Qiang Lan, Wen-Zheng Zhou, Jin Guo, Mohammd Bin Ismail, Hai-Zhen Liu
Summary: In this work, Ti3AlCN MAX without HF-etching was used to enhance the kinetics and cycling stability of MgH2. The addition of 10 wt% Ti3AlCN significantly lowered the onset dehydrogenation temperature of MgH2 and facilitated rehydrogenation at lower temperatures. Ti3AlCN also showed excellent catalytic properties for the nucleation and growth of MgH2.
Article
Chemistry, Physical
Hui Luo, Yunshu Yang, Liwen Lu, Guangxu Li, Xinhua Wang, Xiantun Huang, Xiaoma Tao, Cunke Huang, Zhiqiang Lan, Wenzheng Zhou, Jin Guo, Haizhen Liu
Summary: In this study, a two-dimensional Ti3CN MXene was synthesized and added to the Li-Mg-B-H composite, resulting in a reduction in the dehydrogenation temperature and induction period of the composite. The reversible capacity and capacity retention ratio of the composite were maintained at high levels. Micro-structure studies revealed the transformation of Ti3CN into highly-dispersed nano-TiB2, which acted as an active catalyst to improve the kinetics and reversibility of the composite. This research provides insights into the role of MXene in tailoring the hydrogen storage properties of metal borohydride-based composites.
APPLIED SURFACE SCIENCE
(2023)
Review
Materials Science, Multidisciplinary
Hang Yang, Zhao Ding, Yu-Ting Li, Shao-Yuan Li, Ping-Keng Wu, Quan-Hui Hou, Yang Zheng, Biao Gao, Kai-Fu Huo, Wen-Jia Du, Leon L. Shaw
Summary: Developing safer and more efficient hydrogen storage technology is crucial for the realization of the hydrogen economy. MgH2 has been extensively studied as a promising solid-state hydrogen storage material due to its lightweight, high storage density, and abundant reserves. However, practical applications have been hindered by issues such as stable thermodynamics, sluggish kinetics, and rapid capacity decay.
Article
Chemistry, Physical
Heng Lu, Jianbo Li, Tianyu Xie, Xiang Zhou, Zhao Ding, Yangfan Lu, Yu'an Chen, Zhongqing Liu, Qian Li, Fusheng Pan
Summary: The synergistic catalytic effects of AlH3-TiF3 composites improve the kinetic properties of Mg-based hydrogen storage materials. In situ generated Al* reacts with TiF3 and Mg, forming Al3Ti, AlF3, and Mg17Al12, and these compounds act as catalytically active centers for the reversible conversion between Mg and MgH2. The presence of Mg17Al12 also narrows the free energy gap between the hydrogenated and dehydrogenated states, improving the thermodynamic properties.
JOURNAL OF PHYSICAL CHEMISTRY C
(2022)
Article
Chemistry, Physical
Zi Jun Gao, Zhou Peng Li, Bin Hong Liu
Summary: In this study, La-incorporated Ni-B amorphous composites were synthesized and found to significantly improve the dehydrogenation kinetics of MgH2, showing higher structural and catalytic stability.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Chaodong Hu, Zhiwen Zheng, Tingzhi Si, Qingan Zhang
Summary: The amorphous TiMgVNi3-doped MgH2, prepared by ball milling under a hydrogen atmosphere, exhibits enhanced dehydrogenation kinetics and cycle durability due to the in situ formation of catalytic nanoparticles from an amorphous phase.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Physical
Peng Wang, Zhihui Tian, Zexuan Wang, Chaoqun Xia, Tai Yang, Xiulong Ou
Summary: In this study, transition metal sulfides were used as catalysts to enhance the hydrogen storage behaviors of MgH2. The addition of sulfides significantly increased the desorption and absorption kinetics of hydrogen in MgH2, with MgH2-TiS2 showing the best performance.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Review
Materials Science, Multidisciplinary
Yaxiong Yang, Xin Zhang, Lingchao Zhang, Wenxuan Zhang, Huifeng Liu, Zhenguo Huang, Limei Yang, Changdong Gu, Wenping Sun, Mingxia Gao, Yongfeng Liu, Hongge Pan
Summary: The storage of hydrogen in a compact, safe and cost-effective manner is crucial for a more sustainable society. Magnesium hydride (MgH2) has attracted attention as a hydrogen carrier but its practical use is limited due to high temperatures and slow kinetics. Catalysis plays a crucial role in enhancing hydrogen cycling kinetics, and research has focused on designing and optimizing catalysts for Mg/MgH2.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2023)
Review
Materials Science, Multidisciplinary
Mengchen Song, Liuting Zhang, Fuying Wu, Haoyu Zhang, Hu Zhao, Lixin Chen, Hong Li
Summary: Energy storage is crucial for the large-scale utilization of renewable energy. Magnesium hydride (MgH2) has the advantages of low cost, abundant resources, and high energy storage capacity, but its practical application is hindered by sluggish kinetics and poor cycling stability. This review summarizes recent advances in enhancing the hydrogen storage, lithium-ion storage, and heat storage performances of MgH2, and discusses its prospects in these fields. It is expected that this review will inspire insightful and pioneering research on the design and preparation of MgH2 with excellent energy storage performances.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2023)
Article
Chemistry, Physical
Cong Peng, Qingan Zhang
Summary: In this study, a high-efficient catalyst comprising of YCxFy nanosheets-supported Ni nanoparticles was designed to address the sluggish kinetics and poor cyclic stability of MgH2. The as-achieved MgH2-10 wt.% Ni-30/YCxFy composite exhibits superior hydrogen desorption kinetics and high capacity retention. The in situ formed Mg2NiH4 and YH3 catalytic phases accelerate the hydrogen desorption kinetics, while the dispersed MgF2 and carbon species prevent the crystallite growth, particle aggregation, and catalyst redispersion, contributing to an excellent cyclic stability.
Article
Green & Sustainable Science & Technology
Zexuan Wang, Zhihui Tian, Pufan Yao, Huimin Zhao, Chaoqun Xia, Tai Yang
Summary: Nickel phosphide (Ni2P) is synthesized and introduced into magnesium hydride (MgH2) to enhance the hydrogen storage performance. The addition of Ni2P decreases the dehydrogenation temperature of MgH2 and improves the hydrogen absorption and desorption kinetics of the composites.
Article
Nanoscience & Nanotechnology
Haizhen Liu, Chenglin Lu, Xinchun Wang, Li Xu, Xiantun Huang, Xinhua Wang, Hua Ning, Zhiqiang Lan, Jin Guo
Summary: The combination of V2C and Ti3C2 in MgH2 significantly improves hydrogen storage performance, enhancing hydrogen desorption rate and cycling stability. V2C and Ti3C2 promote the hydrogen-releasing process of MgH2 and may facilitate the transfer of hydrogen atoms or molecules through grain boundaries and interfaces. This study provides new insights into the hydrogen storage behaviors and mechanisms of MgH2 catalyzed by MXenes.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Physical
Jingxi Zhang, Huang Liu, Pei Sun, Chengshang Zhou, Xueyi Guo, Zhigang Zak Fang
Summary: In this study, MgO doping and air exposure methods were used to add oxygen to MgH2-TiH2 materials, and the hydrogen storage properties of these materials were systematically investigated. The results showed that MgO doping accelerated the absorption kinetics at ambient temperature, hindered the growth of Mg crystalline, and reduced the desorption temperature. On the contrary, air exposure significantly deteriorated the kinetics of MgH2-TiH2 under both ambient and high temperature. The hydrogenation kinetics of the air-exposed sample can be recovered under cycling. Our results indicated that the effect of MgO is highly dependent on the means to introduce MgO and the location of MgO in the matrix structure. Air exposure is the main factor for the degradation of hydrogen storage properties, but MgO doping positively affects the performance of Mg-based hydride.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Metallurgy & Metallurgical Engineering
Yaokun Fu, Lu Zhang, Yuan Li, Sanyang Guo, Han Yu, Wenfeng Wang, Kailiang Ren, Wei Zhang, Shumin Han
Summary: Hydrogen storage is a crucial aspect of the hydrogen economy, and solid-state hydrogen storage is the most promising approach. In this study, a ternary transition metal sulfide FeNi2S4 with a hollow balloon structure was designed as a catalyst for MgH2 to enhance its dehydrogenation/hydrogenation performance by constructing a MgH2/Mg2NiH4-MgS/Fe system.
JOURNAL OF MAGNESIUM AND ALLOYS
(2023)
Article
Engineering, Electrical & Electronic
Arun Murali, Hong Yong Sohn, Prashant Kumar Sarswat
JOURNAL OF ELECTRONIC MATERIALS
(2019)
Article
Materials Science, Ceramics
Rahul Sarkar, Hong Yong Sohn
CERAMICS INTERNATIONAL
(2019)
Article
Materials Science, Multidisciplinary
H. Y. Sohn, S. Roy, D. Q. Fan
METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE
(2019)
Review
Materials Science, Multidisciplinary
M. Shamsuddin, H. Y. Sohn
Review
Materials Science, Multidisciplinary
M. Shamsuddin, H. Y. Sohn
Article
Materials Science, Ceramics
Rahul Sarkar, Barbara P. Nash, Hong Yong Sohn
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2020)
Article
Chemistry, Physical
Minghui Liu, Ding Zhao, Weiran Zhai, Jia Yang, Bin Yang, Hong Yong Sohn, Baoqiang Xu
JOURNAL OF ALLOYS AND COMPOUNDS
(2020)
Article
Materials Science, Multidisciplinary
Hong Yong Sohn
Article
Green & Sustainable Science & Technology
Hongliang Zhao, Fengqin Liu, Mingzhuang Xie, Wei Liu, Hong Yong Sohn
Summary: A classified recycling and utilization path is proposed for spent cathode carbon block, spent silicon carbide block, and spent barrier and insulating refractory materials. Different high-temperature processes were adopted to decompose cyanides, Si3N4, and Na2SiO3, and separate fluorides to obtain high graphitization carbon and silicon carbide. The fluorides in spent barrier and insulating refractory materials were converted into a mineralizer to lower the burning temperature of cement clinker.
JOURNAL OF CLEANER PRODUCTION
(2021)
Review
Biochemistry & Molecular Biology
Hong Yong Sohn, Arun Murali
Summary: This article reviews and summarizes recent work in this laboratory on the synthesis of advanced transparent conducting oxide nanopowders using plasma. The process involves selecting suitable precursors, injecting them into a non-transferred thermal plasma, vaporizing them, and forming nanosized oxide particles through vapor-phase reactions. The thermal plasma process shows great potential as an efficient technique for synthesizing oxide nanopowders.
Article
Materials Science, Multidisciplinary
Hong Yong Sohn, De-Qiu Fan, Amr Abdelghany
Summary: The simulation work on the novel flash ironmaking technology demonstrated the feasibility of using a reasonably sized reactor, with possibilities for improving production rates. Design considerations include minimizing particle-wall collisions and utilizing a large diameter-to-height ratio to reduce heat loss.
Article
Materials Science, Multidisciplinary
Hong Yong Sohn, Syamantak Roy
Summary: This article introduces a novel horizontal moving-bed ironmaking process that uses iron concentrate directly and develops a mathematical model for industrial ironmaking operation.
Article
Engineering, Multidisciplinary
Zhiyao Chu, Junqi Li, Hong Yong Sohn, Chaoyi Chen, Xiao Huang, Yuanpei Lan, Arun Murali, Junshan Zhang
Summary: Novel CeO2-C-g-C3N4 S-scheme heterojunctions were prepared by a one-step molten KCl-LiCl method, showing significantly enhanced photocatalytic performance. The formation mechanism of CeO2-C-g-C3N4 and the effects of the surface C/N ratio on photocatalytic performance were investigated. The photocatalytic activity of CeO2-C-g-C3N4 first increased and then decreased with synthesis temperature and time. The 580 degrees C 4h CeO2-C-g-C3N4 exhibited the best performance towards MB and TC degradation with removal degrees of 99.9% and 92.5%, respectively.
COMPOSITES PART B-ENGINEERING
(2023)
Article
Metallurgy & Metallurgical Engineering
H. Y. Sohn
Summary: This article introduces two new processes developed at the University of Utah for direct iron production using concentrate-size raw materials without pelletizing or sintering, especially without the use of coke. These processes can take advantage of the high reactivity of concentrate particles to significantly reduce energy consumption and carbon dioxide emissions compared to current processes.
MINING METALLURGY & EXPLORATION
(2023)
Article
Mining & Mineral Processing
Hong Yong Sohn
MINERAL PROCESSING AND EXTRACTIVE METALLURGY-TRANSACTIONS OF THE INSTITUTIONS OF MINING AND METALLURGY
(2020)