Article
Chemistry, Physical
Xiangyu Chen, Jie Xu, Weirong Zhang, Shuai Zhu, Na Zhang, Dandan Ke, Jingjing Liu, Kai Yan, Honghui Cheng
Summary: This study investigates the effect of Mn partial substitution for Ni in rare-earth AB(5)-type hydrogen storage alloys on plateau characteristics and long-term cycling performance, revealing that Mn addition can alleviate plateau splitting and capacity degradation issues, improving the cycle stability and hydrogen absorption/desorption properties of the alloys.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Biochemistry & Molecular Biology
Toyoto Sato, Hiroyuki Saitoh, Reina Utsumi, Junya Ito, Yuki Nakahira, Kazuki Obana, Shigeyuki Takagi, Shin-ichi Orimo
Summary: In this study, the hydrogen absorption reaction of LaNi5 under high pressures above 1 GPa was investigated, and it was found that LaNi5 absorbed 2.07% hydrogen at 6 GPa, indicating a higher hydrogen storage capacity compared to reactions below 1.0 MPa. Additionally, the hydrogen-absorbed LaNi5Hx decomposed into NiH under high-pressure conditions, and a new hydride phase with different crystal parameters was observed.
Article
Energy & Fuels
Shan Miao, Akashi Eguchi, Noboru Katayama, Kiyoshi Dowaki
Summary: The lanthanum-rich mischmetal alloy showed good purification ability on high concentrations of hydrogen sulfide, while impurities of 1 ppm had little impact on HSA. At 100 ppm hydrogen sulfide concentration, the hydrogen storage capacity, absorption rate, and release rate were reduced, but stabilized from the second cycle onwards. Performance degradation mechanism was analyzed using Energy Dispersive X-Ray Spectroscopy (EDS) and X-ray Photoelectron Spectroscopy (XPS).
ENERGY SCIENCE & ENGINEERING
(2021)
Article
Chemistry, Physical
Jingjing Liu, Jie Xu, Salma Sleiman, Francia Ravalison, Wei Zhu, Hongfei Liu, Honghui Cheng, Jacques Huot
Summary: This paper presents the synthesis, first hydrogenation kinetics, thermodynamics, and cycling effect on the hydrogen storage properties of a V0.3Ti0.3Cr0.25Mn0.1Nb0.05 high entropy alloy. The results show that the alloy has a high hydrogen storage capacity and reversible hydrogen desorption performance, but experiences capacity loss and changes in hydrogen absorption kinetics during cycling.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Physical
Uday Raj Singh, Satyasekhar Bhogilla
Summary: This study presents a comparative analysis of the performance of metal hydride hydrogen storage units using LaNi5 and compacts of LaNi5 incorporated with expanded natural graphite (ENG). The research highlights the need to enhance thermal conductivity to improve heat transfer during hydrogen absorption. The results demonstrate that the use of LaNi5 and ENG compacts significantly improves heat transfer, hydrogen storage capacity, and reduces absorption time.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Physical
Long Liang, Qingqing Yang, Shaolei Zhao, Limin Wang, Fei Liang
Summary: Rare-earth hydrogen storage alloy shows a catalytic effect in reducing the dehydrogenation temperature and improving the dehydrogenation kinetics of alane, providing a promising strategy for metal hydride modification.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Physical
Busra Arslan, Mustafa Ilbas, Selahattin Celik
Summary: Energy storage, especially thermal energy storage using phase change materials (PCMs), is crucial for efficient energy utilization. This study investigates the use of PCM in a metal hydride (MH) reactor to store and recover heat during hydrogen charge and discharge processes. Experiments were conducted on a LaNi5-H2 reactor with and without PCM, and the effects of hydrogen storage pressure and reactor design on the charge-discharge rate were determined. The results show that designing a hybrid MH-PCM storage system holds promise for the advancement of hydrogen storage and transportation technologies, particularly in vehicles like automobiles and submarines.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Physical
Yaolin Xu, Fokko M. Mulder
Summary: Magnesium is attracting research interest as an anode material for Ni-MH batteries due to its lightweight, cost-effectiveness, and high theoretical capacity. Challenges such as poor hydrogen sorption kinetics and passivation from aggressive electrolytes have been addressed by using non-alloyed but catalyzed magnesium and adding TiF3 as a catalyst. Promising electrochemical performance has been achieved, with potential for further improvements.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Engineering, Environmental
Zhiqiang Lan, Hong Fu, Ruolin Zhao, Haizhen Liu, Wenzheng Zhou, Hua Ning, Jin Guo
Summary: In this study, the hydrogen storage properties of MgH2 were improved by doping nitrogen-doped niobium carbide-supported niobium pentoxide. The doped composite showed a higher hydrogen uptake capacity, better cyclic stability, and the ability to release hydrogen at lower temperatures. Mechanism analysis revealed that the improvement was attributed to the suppression of MgH2 grain size, the presence of more active sites, and the elongation of Mg-H bond length.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Physical
Gabriel Rodrigues de Almeida Neto, Cesar Augusto Goncalves Beatrice, Daniel Rodrigo Leiva, Luiz Antonio Pessan
Summary: This study investigated the preparation of PEI-LaNi5 composite films for hydrogen storage, demonstrating that PEI films filled with LaNi5 are promising materials for this purpose. The membranes were successfully produced through solvent casting assisted by an ultrasonic bath, and the results showed that the film morphology remained unchanged after hydrogenation cycles.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Engineering, Environmental
Mingxing Wei, Yijin Liu, Xiaofei Xing, Zhao Zhang, Tong Liu
Summary: By introducing a specially designed and synthesized high-entropy alloy catalyst, the hydrogen storage properties of MgH2 have been significantly improved, resulting in faster absorption and desorption rates, lower activation energy, and high capacity retention.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Hongen Yu, Yong Wu, Shunpeng Chen, Zewei Xie, Yiman Wu, Nuo Cheng, Xue Yang, Wei Lin, Lei Xie, Xingguo Li, Jie Zheng
Summary: In this study, a palladium catalyst loaded on a hydrogen storage support-Pd/LaNi5 was synthesized and its catalytic property in reversible hydrogen storage of N-ethylcarbazole (NEC) was investigated. The results showed that the catalytic performance of 1 wt%Pd/LaNi5 was significantly better than that of Pd/Al2O3 with the same Pd loading. This improvement was attributed to the ample lattice hydrogen bonding sites and fast bulk hydrogen diffusion kinetics of LaNi5.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2022)
Article
Metallurgy & Metallurgical Engineering
Xu Pang, Lei Ran, Yu'an Chen, Yuxiao Luo, Fusheng Pan
Summary: This paper investigates the hydrogen absorption and desorption performance, as well as the microstructure characteristics of magnesium-based hydrogen storage materials. By adjusting the addition amount of nickel and yttrium elements, the alloy structure with improved hydrogen storage performance is obtained.
JOURNAL OF MAGNESIUM AND ALLOYS
(2022)
Article
Green & Sustainable Science & Technology
Min Liu, Bo Zhao, Yaze Li, Zhen Wang, Xuesong Zhang, Liang Tong, Tianqi Yang, Xuefang Li, Jinsheng Xiao
Summary: This study investigated the effects of fin structure and injection tube on the performance of a hydrogen storage tank packed with LaNi5 alloy. A parametric study was conducted to optimize the tank design and improve its efficiency and safety. The results showed that the fin structure improved heat transfer performance and the injection tube enhanced hydrogen mass transfer in the tank.
Review
Chemistry, Physical
Jean-Marc Joubert, Valerie Paul-Boncour, Fermin Cuevas, Junxian Zhang, Michel Latroche
Summary: This paper provides a comprehensive review of the properties and applications of AB(5) compounds, including crystal structures, formation of metallic hydrides, thermodynamic properties of sorption reaction, and applications in magnetic properties and electrochemical energy storage. It highlights the great potential of this class of materials in gas storage, heat exchange, compression, gas separation, and purification.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Multidisciplinary
Erhuan Zhang, Lei Tao, Jingkun An, Jiangwei Zhang, Lingzhe Meng, Xiaobo Zheng, Yu Wang, Nan Li, Shixuan Du, Jiatao Zhang, Dingsheng Wang, Yadong Li
Summary: Rarely reported is the in-depth understanding of local atomic environment-property relationships of p-block metal single-atom catalysts towards the 2e(-) oxygen reduction reaction (ORR). In this study, a heteroatom-modified In-based metal-organic framework-assisted approach is developed to synthesize an optimal catalyst, In SAs/NSBC, with accurately anchored single In atoms supported by hollow carbon rods. The catalyst exhibits a high H2O2 selectivity and unprecedented production rates in different electrolytes, providing practical guidance for H2O2 electrosynthesis and enabling the design of high-performance single-atom materials.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Engineering, Chemical
Chunxiao Dong, Jing Zhou, Xiaozhi Su, Yu Wang, Xiaoling Yang, Yihua Zhu, Hongliang Jiang, Chunzhong Li
Summary: In this study, a dechlorination-facilitated deprotonation process of CoFe hydroxide precatalyst was revealed, leading to the formation of highly active CoFe oxyhydroxide catalyst for OER. The resultant catalyst exhibited remarkable OER activity.
CHEMICAL ENGINEERING SCIENCE
(2022)
Article
Chemistry, Physical
Ming Qu, Zhe Chen, Zhiyi Sun, Danni Zhou, Wenjing Xu, Hao Tang, Hongfei Gu, Tuo Liang, Pengfei Hu, Guangwen Li, Yu Wang, Zhuo Chen, Tao Wang, Binbin Jia
Summary: The atomic-level interfacial regulation of single metal sites through heteroatom doping can significantly improve the characteristics of the catalyst and obtain surprising activity. In this study, nickel single-site catalysts with dual-coordinated phosphorus and nitrogen atoms were developed and showed excellent catalytic performance in CO2 reduction reaction.
Article
Chemistry, Physical
Pengfei Wu, Tingting You, Qingyuan Ren, Hongyan Xi, Qingqing Liu, Fengjuan Qin, Hongfei Gu, Yu Wang, Wensheng Yan, Yukun Gao, Wenxing Chen, Penggang Yin
Summary: Interface regulation plays a key role in the electrochemical performance for biosensors. In this study, a strongly coupled 1T phase molybdenum sulfide (1T-MoS2)/MXene hybrid was designed through interface electronic engineering to construct an efficient electrocatalytic biomimetic sensor. Experimental and theoretical results showed that the modified electrode exhibited ultra high sensitivity and low detection limit.
Article
Chemistry, Multidisciplinary
Zechao Zhuang, Lixue Xia, Jiazhao Huang, Peng Zhu, Yong Li, Chenliang Ye, Minggang Xia, Ruohan Yu, Zhiquan Lang, Jiexin Zhu, Lirong Zheng, Yu Wang, Tianyou Zhai, Yan Zhao, Shiqiang Wei, Jun Li, Dingsheng Wang, Yadong Li
Summary: This study successfully surpasses the activity limit of single-atom catalysts (SACs) by utilizing n-type semiconductor supports for p-type SACs and discovers that the activity of supported SACs can be continuously tuned through rectification strategy.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Multidisciplinary
Jing Xu, Ying Wang, Ke Wang, Meng Zhao, Rui Zhang, Wenjie Cui, Li Liu, Megalamane S. Bootharaju, Jeong Hyun Kim, Taeghwan Hyeon, Hongjie Zhang, Yu Wang, Shuyan Song, Xiao Wang
Summary: Highly active and durable rhodium (Rh) single-atom catalysts were synthesized through a wrap-bake-peel process. The pre-coated SiO2 layer plays a crucial role in protecting the CeO2 support and producing highly loaded Rh single atoms on the CeO2 support with high-index {210} facets. The unique electronic structure of CeO2 {210} facets leads to more oxygen vacancies and improved catalytic performance in CO oxidation.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Multidisciplinary
Jiaqiang Sun, Lei Tao, Chenliang Ye, Yu Wang, Ge Meng, Hengyuan Lei, Shenke Zheng, Chuang Xing, Xin Tao, Pengfei Wu, Jiangang Chen, Shixuan Du, Dingsheng Wang, Yadong Li
Summary: A dual-atomic-site catalyst, Ru1Zr1/Co, was designed for Fischer-Tropsch synthesis (FTS), showing enhanced FTS activity and C5+ selectivity. The synergic effect between Ru and Zr single-atom site on Co NPs contributes to the improved performance.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Chemistry, Physical
Yue Yu, Yinuo Zhang, Yu Wang, Wenxing Chen, Zhanjun Guo, Ningning Song, Minmin Liang
Summary: Rational design of metallic active sites and its microenvironment is critical for constructing superoxide dismutase (SOD) nanozymes. Here, a novel SOD nanozyme design was reported, using graphene oxide (GO) as the framework and delta-MnO2 as the active sites to mimic natural Mn-SOD. The nanozyme achieved superlative SOD-like catalytic performance with a 95.5% inhibition rate, which is significantly higher than GO and MnO2 nanoparticles.
Article
Multidisciplinary Sciences
Jian Jin, Joshua Wicks, Qiuhong Min, Jun Li, Yongfeng Hu, Jingyuan Ma, Yu Wang, Zheng Jiang, Yi Xu, Ruihu Lu, Gangzheng Si, Panagiotis Papangelakis, Mohsen Shakouri, Qunfeng Xiao, Pengfei Ou, Xue Wang, Zhu Chen, Wei Zhang, Kesong Yu, Jiayang Song, Xiaohang Jiang, Peng Qiu, Yuanhao Lou, Dan Wu, Yu Mao, Adnan Ozden, Chundong Wang, Bao Yu Xia, Xiaobing Hu, Vinayak P. Dravid, Yun-Mui Yiu, Tsun-Kong Sham, Ziyun Wang, David Sinton, Liqiang Mai, Edward H. Sargent, Yuanjie Pang
Summary: The carbon dioxide and carbon monoxide electroreduction reactions are promising pathways for decarbonization of chemical manufacture. By dispersing a low concentration of copper atoms in a host metal, acetate can be selectively synthesized from carbon monoxide. Through catalyst design and reactor engineering, high selectivity and Faradaic efficiency for acetate production have been achieved.
Article
Chemistry, Physical
Hongfei Gu, Wence Yue, Jingqi Hu, Xiangfu Niu, Hao Tang, Fengjuan Qin, You Li, Qing Yan, Xinman Liu, Wenjing Xu, Zhiyi Sun, Qingqing Liu, Wensheng Yan, Lirong Zheng, Yu Wang, Hua Wang, Xinyuan Li, Liang Zhang, Guangming Xia, Wenxing Chen
Summary: In this study, metal single-atom catalysts immobilized on nitrogen-doped Ti3C2Tx were successfully prepared and applied as polypropylene separator coatings to enhance the performance of Li-S batteries. Among them, Cu SA/N-Ti3C2Tx/PP exhibited remarkable properties, including excellent rate performance, superb cycling stability, and high sulfur utilization even at large sulfur loadings. This work provides insights into improving the electrochemical performance of advanced batteries for energy storage and conversion.
ADVANCED ENERGY MATERIALS
(2023)
Article
Multidisciplinary Sciences
Zetian Qiu, Siyu Lin, Zhuo Chen, Anqi Chen, Yitian Zhou, Xudong Cao, Yu Wang, Bo-Lin Lin
Summary: One-step conversion of low-purity polyolefins to branched liquid alkanes is achieved using a reusable, noble metal-free and impurity-tolerant bifunctional catalyst, MoSx-Hbeta. The catalyst works under mild conditions and is compatible with various types of polyolefins, including those mixed with heteroatom-linking polymers and contaminated polyolefins. The hydroconversion process demonstrates high yields of small alkanes, even at low temperatures, making it a promising method for chemical recycling of waste plastics.
Article
Chemistry, Multidisciplinary
Yaning Hu, Shuo Zhang, Zedong Zhang, Hexin Zhou, Bing Li, Zhiyi Sun, Xuemin Hu, Wenxiu Yang, Xiaoyan Li, Yu Wang, Shuhu Liu, Dingsheng Wang, Jie Lin, Wenxing Chen, Shuo Wang
Summary: In this study, a high-performance photocatalytic transfer hydrogenation catalyst was successfully synthesized by loading ultrafine Pd nanoparticles on a graphite-like C3N4 structure with nitrogen defects. The resulting catalyst showed superior reaction rate and selectivity in the hydrogenation of alkynes. The Mott-Schottky effect in Pd/DCN and the nitrogen defects in the supports were found to play important roles in enhancing the catalytic activity.
ADVANCED MATERIALS
(2023)
Article
Cell Biology
Dong-Dong Wu, Sheng Jin, Ruo-Xiao Cheng, Wen-Jie Cai, Wen-Long Xue, Qing-Qing Zhang, Le-Jie Yang, Qi Zhu, Meng-Yao Li, Ge Lin, Yi-Zhen Wang, Xue-Pan Mu, Yu Wang, Igor Ying Zhang, Qi Zhang, Ying Chen, Sheng-Yang Cai, Bo Tan, Ye Li, Yun-Qian Chen, Pu-Juan Zhang, Chen Sun, Yue Yin, Ming-Jie Wang, Yi-Zhun Zhu, Bei-Bei Tao, Jia-Hai Zhou, Wei-Xue Huang, Yi-Chun Zhu
Summary: This study investigates the possibility of a mechanism beyond post-translational modifications to regulate protein function. It shows that hydrogen sulfide (H2S) can bind to the active-site copper of Cu/Zn-SOD, enhancing electrostatic forces and facilitating electron transfer. The physiological relevance of this H2S effect is demonstrated in in vitro and in vivo models where the cardioprotective effects of H2S depend on Cu/Zn-SOD.
Article
Chemistry, Physical
Haoxiang Fan, Fengjuan Qin, Qi Yuan, Zhiyi Sun, Hongfei Gu, Wenjing Xu, Hao Tang, Shuhu Liu, Yu Wang, Wenxing Chen, Jia Li, Huazhang Zhai
Summary: This study reports a novel single-atom catalyst supported on vacancy-affluent porous hexagonal boron nitride for efficient and selective conversion reactions. XAFS experiments and DFT calculations suggest that the nitrogen vacancy adjacent to the active center plays a key role in atomic interface regulation. The strongly coupled metal-ligand moiety with an adjacent vacancy may have synergistic effects in heterogeneous catalysis.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Chemistry, Physical
Ming Qu, Zhe Chen, Zhiyi Sun, Danni Zhou, Wenjing Xu, Hao Tang, Hongfei Gu, Tuo Liang, Pengfei Hu, Guangwen Li, Yu Wang, Zhuo Chen, Tao Wang, Binbin Jia
Summary: This study developed nickel single-site catalysts with dual-coordinated phosphorus and nitrogen atoms, which significantly improved the CO2RR activity of the catalyst. Experimental and theoretical results revealed that the asymmetric Ni-P1N3 site facilitated the adsorption/desorption of CO2 intermediates, thereby promoting reaction kinetics and enhancing CO2RR activity.
