Article
Energy & Fuels
Ihor Zavaliy, Vasyl Berezovets, Roman Denys, Oleksandr Kononiuk, Volodymyr Yartys
Summary: The catalytic effect of eta-Zr3V3O0.6 mixed suboxide and graphite additives on MgH2 properties in hydrogen storage and generation processes was investigated. Hydride composites were obtained by reactive ball milling and characterized using XRD and SEM. The addition of Zr3V3O0.6 and graphite significantly enhanced hydrogen absorption and desorption rates, as well as lowered the activation energy and desorption temperature. The synthesized composite showed improved kinetics and enhanced hydrogenation capacity, making it a promising material for hydrogen storage. The catalytic composites also exhibited efficient hydrogen generation in hydrolysis reaction. Overall, the research received a rating of 8 out of 10.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Chemistry, Physical
V. V. Berezovets, R. Denys, I. Yu Zavaliy, Yu Kosarchyn
Summary: MgH2-based nanocomposites were synthesized using reactive ball milling and various catalytic additives. The additives improved the hydrogen absorption-desorption kinetics and stability of the composites. Nano-Ti showed the most stable hydrogen absorption-desorption characteristics compared to TiO2 and Ti4Fe2Ox additives.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Physical
Zhaoyue Weng, Ilizel Retita, Yu-Sheng Tseng, Andrew J. Berry, Dean R. Scott, Daniel Leung, Yu Wang, S. L. I. Chan
Summary: The study investigated the formation of metastable gamma-MgH2 under ultra-high pressure, which has a lower dehydrogenation temperature and high hydrogen storage capacity compared to alpha-MgH2. Application of ultra-high pressure facilitated the formation of gamma-MgH2, showing its potential as a future hydrogen storage material.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
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)
Article
Metallurgy & Metallurgical Engineering
Liang Zeng, Zhiqiang Lan, Baobao Li, Huiren Liang, Xiaobin Wen, Xiantun Huang, Jun Tan, Haizhen Liu, Wenzheng Zhou, Jin Guo
Summary: Carbon-supported Ni3S2 catalyst can effectively improve the hydrogen storage performance of MgH2, enhancing its hydrogenation/dehydrogenation kinetics and hydrogen absorption/release capacities. The improvement is attributed to the multi-phase catalytic action of C, Mg2Ni, and MgS formed by the reaction between Ni3S2 and Mg.
JOURNAL OF MAGNESIUM AND ALLOYS
(2022)
Article
Energy & Fuels
Weitao Shi, Feifan Hong, Renhuan Li, Ruolin Zhao, Sizhi Ding, Ziqi Liu, Peilin Qing, Yi Fan, Haizhen Liu, Jin Guo, Zhiqiang Lan
Summary: MnO2-doped Ti3C2 was used as a catalyst to enhance the hydrogen storage performance of MgH2. The doped sample exhibited good adsorption ability at room temperature and could absorb 5.13 wt% hydrogen in 400 s at 75°C. The composite did not alter the thermodynamic properties of MgH2 and formed multiphase interfaces, improving the hydrogen storage performance. This study provides a new strategy for preparing efficient catalysts for hydrogen storage applications.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Nanoscience & Nanotechnology
Xueqin Zhu, Minjian Yang, Minmin Luo, Yonghong Wang, Hong Li, Juntao Ding, Liqiang Ma
Summary: Transition metal carbides have remarkable catalytic effects on MgH2, and the addition of carbon materials improves cycling stability. In this study, Mg-doped with transition metal carbides (TiC) and graphene (G) composite (denoted as Mg-TiC-G) was designed to evaluate the influence of TiC and graphene on the hydrogen storage performance of MgH2. The prepared Mg-TiC-G samples exhibited favorable dehydrogenation kinetics compared to pure Mg. The addition of TiC and graphene reduced the dehydrogenation activation energy of MgH2 from 128.4 to 111.2 kJ mol(-1), and the peak desorption temperature of MgH2 doped with TiC and graphene was 326.5 degrees C, which is 26.3 degrees C lower than pure Mg. The improved dehydrogenation performance of Mg-TiC-G composites is attributed to the synergistic effects between catalysis and confinement.
Article
Chemistry, Physical
Peng Xiao, Jianjun Liu, Dongliang Guo, Liheng Yang, Lei Sun, Shengyi Li, Li Xu, Haizhen Liu
Summary: This study employed TiNbAlC MAX material without corrosive HF solution to improve the hydrogen storage performance of MgH2. The MgH2 + 10 wt% TiNbAlC composite was prepared by ball milling. The addition of 10 wt% TiNbAlC significantly reduced the onset temperature of MgH2 desorption and improved the hydrogen absorption capacity of MgH2 at room temperature under high H2 pressure. This work provides new insights into the role of MAX phase in tailoring the hydrogen storage of Mg-based materials.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
M. Ismail
Summary: Magnesium hydride (MgH2) is a promising material for solid-state hydrogen storage due to its reversible nature and high storage capacity. However, slow kinetics and high stability have hindered its commercialization. By adding hafnium tetrachloride (HfCl4) as a catalyst, the desorption kinetics and thermodynamics of MgH2 can be improved, with the optimal enhancement observed at 15 wt% HfCl4 doping.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
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
Engineering, Environmental
Haizhen Liu, Xingqing Duan, Zhiye Wu, Hui Luo, Xinhua Wang, Cunke Huang, Zhiqiang Lan, Wenzheng Zhou, Jin Guo, Mohammad Ismail
Summary: In this work, a bimetallic open layered Ti2VC2 MXene was successfully synthesized and showed good enhancing impact on the hydrogen storage properties of MgH2. MgH2-Ti2VC2 starts dehydrogenation at a lower temperature and both MgH2-Ti2VC2 and MgH2-Ti2VAlC2 can start rehydrogenation at room temperature. The reversible capacity of MgH2-Ti2VC2 only slightly decreases after 100 cycles.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Environmental Sciences
Kanhaiya Chawla, Deepak Kumar Yadav, Abhinav Bajpai, Sushant Kumar, Chhagan Lal
Summary: This study investigates the improvement of hydrogen storage properties of MgH2 by using activated carbon as a catalyst in MgH2-AC nanocomposites. The results show that the presence of activated carbon helps reduce oxygen in MgO phase, leading to significantly enhanced absorption capacity and kinetics in the MgH2-AC nanocomposites. The nanocomposites also exhibit high hydrogenation properties with the presence of beta- and gamma-phases of MgH2, as supported by XRD data.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Chemistry, Physical
Nigel Rambhujun, Kondo-Francois Aguey-Zinsou
Summary: By tuning the chemical structure and activation energy of Grignard reagents, efficient generation of magnesium and its hydride can be achieved. For example, di-tert-butylmagnesium can decompose at low temperatures to produce MgH2 and release hydrogen at lower temperatures.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Physical
Cong Peng, Yongtao Li, Qingan Zhang
Summary: This paper proposes a new approach to improve the sorption kinetics of magnesium hydride by catalyzing it with highly dispersed nickel nanoparticles. The experiment demonstrates that the in-situ formation of highly dispersed Ni nanoparticles in the MgH2 matrix significantly enhances the hydrogen desorption kinetics and retention rate of MgH2.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Pawan K. Soni, Ashish Bhatnagar, M. A. Shaz
Summary: In this study, the synergistic effect of Fe nanoparticles and hollow carbon spheres composite on the hydrogen storage properties of MgH2 was investigated. The MgH2-Fe-HCS system exhibited an onset desorption temperature of 225.9 degrees C and a hydrogen storage capacity of 5.60 wt%. The MgH2-Fe-HCS composite absorbed 5.60 wt% hydrogen within 55 s and desorbed 5.50 wt% hydrogen within 12 min under 20 atm H2 pressure at 300 degrees C. The desorption activation energy of MgH2-Fe-HCS was found to be 84.9 kJ/mol. The composite also showed better cyclability up to 24 cycles of hydrogenation and dehydrogenation of MgH2.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Physical
Mei Gui Vanessa Wee, Amutha Chinnappan, Runxin Shang, Poh Seng Lee, Seeram Ramakrishna
Summary: Cooling processes, from residences to industries, require a lot of energy and are essential. This study introduces MIL-101(Cr), a new desiccant, to heat exchangers for more efficient cooling. By improving the synthesis method and using a special binder, the MIL-101(Cr)-coated heat exchanger shows improved water uptake capacity and lower regeneration temperature.
JOURNAL OF MATERIALS CHEMISTRY A
(2024)
Article
Chemistry, Physical
Ao Zhen, Guanyu Zhang, Ao Wang, Feng Luo, Jiehua Li, Hong Tan, Zhen Li
Summary: In this study, a solvent-free microemulsion method was used to synthesize waterborne polyurethane (WPU) material with high retention of mechanical properties and satisfactory water absorption rates. The material showed excellent biocompatibility and has broad application potential in the field of biomedicine.
JOURNAL OF MATERIALS CHEMISTRY A
(2024)
Review
Chemistry, Physical
Wensong Ge, Rui Wang, Xiaoyang Zhu, Houchao Zhang, Luanfa Sun, Fei Wang, Hongke Li, Zhenghao Li, Xinyi Du, Huangyu Chen, Fan Zhang, Huifa Shi, Huiqiang Hu, Yongming Xi, Jiankang He, Liang Hu, Hongbo Lan
Summary: This paper reviews the research on the surface tension of eutectic gallium-indium alloys (EGaIn) in the field of stretchable electronics. It covers the principles of oxide layer formation, factors influencing surface tension, and methods for surface modification of liquid metals. The paper also discusses the applications of EGaIn surface modification in different fields and highlights the challenges still faced and the future outlook.
JOURNAL OF MATERIALS CHEMISTRY A
(2024)
Review
Chemistry, Physical
Xiang Song, Lianghao Jia, Zhengen Wei, Tao Xiang, Shaobing Zhou
Summary: This paper provides an overview of the application, preparation, and role of biomimetic structures in solar evaporators with improved evaporation rate and lifetime.
JOURNAL OF MATERIALS CHEMISTRY A
(2024)
Article
Chemistry, Physical
Wei Yuan, Qian Deng, Dong Pan, Xiang An, Canyang Zhao, Wenjun Su, Zhengmin He, Qiang Sun, Ran Ang
Summary: Optimizing the performance of n-type PbTe thermoelectric materials is crucial for practical applications. Dynamic doping has emerged as an effective method to improve the performance of n-type PbTe by optimizing the carrier concentration. This study demonstrates the significance of Mn alloying in enhancing the performance of Ag-doped n-type PbTe by creating a hierarchical structure to suppress thermal transport and improving the Seebeck coefficient.
JOURNAL OF MATERIALS CHEMISTRY A
(2024)
Review
Chemistry, Physical
Xiaoyan Wang, Meiqi Geng, Shengjun Sun, Qian Xiang, Shiyuan Dong, Kai Dong, Yongchao Yao, Yan Wang, Yingchun Yang, Yongsong Luo, Dongdong Zheng, Qian Liu, Jianming Hu, Qian Wu, Xuping Sun, Bo Tang
Summary: This review provides a comprehensive analysis of the progress and challenges in the field of bifunctional electrocatalysts and efficient electrolyzers for seawater splitting. It summarizes recent advancements and proposes future perspectives for highly efficient bifunctional electrocatalysts and electrolyzers.
JOURNAL OF MATERIALS CHEMISTRY A
(2024)
Article
Chemistry, Physical
Jason K. Phong, Christopher B. Cooper, Lukas Michalek, Yangju Lin, Yuya Nishio, Yuran Shi, Huaxin Gong, Julian A. Vigil, Jan Ilavsky, Ivan Kuzmenko, Zhenan Bao
Summary: Dynamic block copolymers (DBCPs) combine the phase separation of traditional block copolymers with the supramolecular self-assembly of periodic dynamic polymers, resulting in the spontaneous self-assembly of high aspect ratio nanofibers with well-ordered PEG and PDMS domains. DBCPs with a periodic block sequence exhibit superior properties compared to those with a random sequence, including delayed onset of terminal flow and higher ionic conductivity values.
JOURNAL OF MATERIALS CHEMISTRY A
(2024)
Article
Chemistry, Physical
Hong Kyu Lee, Yasaswini Oruganti, Jonghyeon Lee, Seunghee Han, Jihan Kim, Dohyun Moon, Min Kim, Dae-Woon Lim, Hoi Ri Moon
Summary: This study reports the moisture-triggered proton-conductivity switching behavior in Zn5FDC MOFs induced by the presence and absence of coordinating solvents, which illustrates the significant role of coordinating solvents in conductivity variation.
JOURNAL OF MATERIALS CHEMISTRY A
(2024)
Article
Chemistry, Physical
Bommaramoni Yadagiri, Sanjay Sandhu, Ashok Kumar Kaliamurthy, Francis Kwaku Asiam, Jongdeok Park, Appiagyei Ewusi Mensah, Jae-Joon Lee
Summary: The molecular engineering of the interface modulator between the perovskite and hole transporting material is crucial for achieving satisfactory performance and stability of perovskite solar cells. In this study, cruciform-shaped dual functional organic materials were employed as surface passivation and hole transporting interfacial layers in perovskite solar cells. The use of these materials significantly improved the power conversion efficiency of the solar cells.
JOURNAL OF MATERIALS CHEMISTRY A
(2024)
Article
Chemistry, Physical
Joaquin Martinez-Ortigosa, Reisel Millan, Jorge Simancas, Manuel Hernandez-Rodriguez, J. Alejandro Vidal-Moya, Jose L. Jorda, Charlotte Martineau-Corcos, Vincent Sarou-Kanian, Mercedes Boronat, Teresa Blasco, Fernando Rey
Summary: This study investigates the synthesis of all-silica RTH zeolites using triisopropyl(methyl)phosphonium as the organic SDA. The results show the formation of two distinct crystalline phases under different synthesis conditions, with fluoride bonding to different silicon sites. It demonstrates the possibility of controlling the placement of fluoride in RTH zeolites through synthesis conditions.
JOURNAL OF MATERIALS CHEMISTRY A
(2024)
Article
Chemistry, Physical
Luyao Zheng, Cong Liu, Wenbiao Zhang, Boxu Gao, Tianlan Yan, Yahong Zhang, Xiaoming Cao, Qingsheng Gao, Yi Tang
Summary: This study successfully improves the efficiency and stability of water splitting by constructing a heterostructured electrocatalyst. The catalyst shows extraordinary performance and could offer an effective approach for the sustainable production of hydrogen.
JOURNAL OF MATERIALS CHEMISTRY A
(2024)
Article
Chemistry, Physical
Carlos A. Campos-Roldan, Raphael Chattot, Frederic Pailloux, Andrea Zitolo, Jacques Roziere, Deborah J. Jones, Sara Cavaliere
Summary: This study systematically evaluated the hydrogen evolution/oxidation reactions on a series of Pt-rare earth nanoalloys in alkaline media, and identified the effect of the lanthanide contraction. The experimental results revealed that the chemical nature of the rare earth modulates the adsorption and mobility of oxygenated-species, enhancing the kinetics of the reactions.
JOURNAL OF MATERIALS CHEMISTRY A
(2024)
Article
Chemistry, Physical
Sara Frank, Mads Folkjaer, Mads L. N. Nielsen, Melissa J. Marks, Henrik S. Jeppesen, Marcel Ceccato, Simon J. L. Billinge, Jacopo Catalano, Nina Lock
Summary: This study investigates the thermal decomposition of ZIF-67 and its correlation with structural evolution and electrocatalytic performance. The researchers used in situ X-ray absorption spectroscopy and total scattering techniques to analyze the process. They found that disorder emerges at lower temperatures and that extending the pyrolysis process can result in materials with superior electrochemical properties.
JOURNAL OF MATERIALS CHEMISTRY A
(2024)
Article
Chemistry, Physical
Zi-Yang Zhang, Hao Tian, Han Jiao, Xin Wang, Lei Bian, Yuan Liu, Nithima Khaorapapong, Yusuke Yamauchi, Zhong-Li Wang
Summary: By constructing Cu-0-Cu+-NH2 composite interfaces with the assistance of SiO2, the electrochemical CO2 reduction reaction (CO2RR) achieves high Faraday efficiency and current density for C2+ production, improving the productivity of carbon cycle.
JOURNAL OF MATERIALS CHEMISTRY A
(2024)
Article
Chemistry, Physical
Ting Wang, Ruijuan Zhang, Pengda Zhai, Mingjie Li, Xinying Liu, Chaoxu Li
Summary: This study successfully exfoliated COFs using a simple electrochemical method, which resulted in improved photocatalytic performance for COFs and enriched the fabrication approach of COF exfoliation.
JOURNAL OF MATERIALS CHEMISTRY A
(2024)