Article
Chemistry, Physical
Mingqi He, Xing Chen, Yanan Zhou, Chang Xu, Xingxing Li, Qiquan Luo, Jinlong Yang
Summary: Using first-principles calculations, single transition-metal (TM) atoms Mo, Re, and Os embedded in nitrogen vacancy of the MoSi2N4 monolayer were screened as potential catalysts for electrochemical nitrogen reduction reaction. The spin states of these active centers can be precisely tuned through a simple doping strategy, and doping one O atom into the system significantly improves catalytic activity. The findings provide insight into designing and controlling spin-related catalytic performance in heterogeneous catalysis.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2023)
Article
Materials Science, Multidisciplinary
K. Jenni, S. Kunkemoeller, P. Steffens, Y. Sidis, R. Bewley, Z. Q. Mao, Y. Maeno, M. Braden
Summary: The magnetic excitations in Sr2RuO4 were studied through polarized and unpolarized neutron scattering experiments, revealing that there is no evidence for resonance excitation in the superconducting phase at the scattering vector of the Fermi-surface nesting. Existing data suggests a weakening of scattered intensity in the nesting spectrum at very low energies, while a quasiferromagnetic contribution persists with a finite width in momentum space even at higher temperatures.
Article
Chemistry, Physical
Shuowen Bo, Qizheng An, Xiuxiu Zhang, Hui-juan Wang, Juguang Han, Weiren Cheng, Qinghua Liu
Summary: The spin states of active sites play a crucial role in the oxygen evolution reaction (OER). This study proposes a strategy to engineer the spin state of Co ions in sulfide spinel catalysts using Nd-evoked valence electronic adjustment. The optimized catalyst exhibits outstanding electrocatalytic properties, and in situ synchrotron radiation infrared spectra confirm the accumulation of key reaction intermediates.
Article
Chemistry, Multidisciplinary
Remko Fermin, Dyon van Dinter, Michel Hubert, Bart Woltjes, Mikhail Silaev, Jan Aarts, Kaveh Lahabi
Summary: This study develops nanostructured Josephson junctions with highly controllable spin texture and induces long-range triplet (LRT) superconductivity in a ferromagnet through the interaction between the vortex magnetization of Co and the Cooper pairs of Nb. Surprisingly, the LRT correlations emerge only in highly localized channels at the rim of the ferromagnet, despite its trivial band structure.
Article
Chemistry, Multidisciplinary
Ling Li, Jing Zhou, Xiao Wang, Jose Gracia, Manuel Valvidares, Jia Ke, Miaomiao Fang, Chenqi Shen, Jin-Ming Chen, Yu-Chung Chang, Chih-Wen Pao, Su-Yang Hsu, Jyh-Fu Lee, Antonio Ruotolo, Yiying Chin, Zhiwei Hu, Xiaoqing Huang, Qi Shao
Summary: In this study, a spin-polarization-mediated strategy was reported to enhance the oxygen evolution reaction (OER) activity in acidic electrolyte by dilute manganese (Mn2+) doping in antiferromagnetic RuO2. The ferromagnetic coupling between Mn and Ru ions was confirmed, and the magnetic field enhanced OER activity of Mn-RuO2 nanoflakes was demonstrated. This work presents an important avenue for designing efficient acidic oxygen evolution catalysts through spin-engineering.
ADVANCED MATERIALS
(2023)
Review
Chemistry, Physical
Jose Gracia, Mauro Fianchini, Chiara Biz, Victor Polo, Roberto Gomez
Summary: Strongly correlated catalysts are understood through precise quantum approximations and incorporating electronic correlations, which helps define Spin rules in catalysis and discover optimum compositions for the most important reactions for a sustainable future.
CURRENT OPINION IN ELECTROCHEMISTRY
(2021)
Review
Chemistry, Physical
Jingxue Li, Yue Yu, Siran Xu, Wenfu Yan, Shichun Mu, Jia-Nan Zhang
Summary: With the increasing demand for clean renewable energy, researchers have been focusing on the development of high-efficiency electrocatalysts for energy conversion. This review article summarizes the progress of electron spin in electrocatalysis, discussing its role in catalytic performance and its impact on reactions such as ORR, OER, NRR, and CO2RR. The article also reviews the methods used to characterize electron spin and the first-principle calculation methods employed in spin catalysis. Understanding the spin effect is essential for improving the understanding of electrocatalytic reactions and guiding the design of high-efficiency catalysts.
ACTA PHYSICO-CHIMICA SINICA
(2023)
Review
Electrochemistry
Xiaoning Li, Zhenxiang Cheng, Xiaolin Wang
Summary: This article discusses the electron behavior during the oxygen evolution reaction (OER) by considering the spin attribute, highlighting the high requirements on the spin structure of electrocatalysts. Understanding the coupling between spin, charge, orbital, and lattice parameters is necessary for optimizing geometric and electronic structures in transition metal systems. It also explores the potential dependency of OER efficiency on the electrocatalyst spin configuration and the relevance of factors like crystal field, coordination, oxidation, bonding, electron number, conductivity, and magnetism with spin.
ELECTROCHEMICAL ENERGY REVIEWS
(2021)
Article
Materials Science, Multidisciplinary
Chenyue Wen, Xingchuan Zhu, Ning Hao, Huaiming Guo, Shiping Feng
Summary: This study investigates the unconventional ferromagnetism and superconductivity in the imbalanced kagome-lattice Hubbard model using mean-field theory and determinant quantum Monte Carlo method. It reveals the intrinsic presence of spin-z ferromagnetic order and its interaction-induced enhancement and destruction. The development of xy-plane ferromagnetism is found to be above a critical interaction, and its possible superconducting state exhibits a triplet f-wave pairing symmetry. These findings provide important insights into the interplay between electronic correlations and geometry frustrations on the kagome lattice.
Article
Materials Science, Multidisciplinary
Bongjae Kim, Minjae Kim, Chang-Jong Kang, Jae -Ho Han, Kyoo Kim
Summary: In this study, the authors investigate the magnetic energy landscape of Sr2RuO4 using the generalized Bloch approach within density functional theory. They identify previously suggested magnetic fluctuations and instabilities, and show that epitaxial strain can alter the magnetic tendency of the system and modulate the relative weight of various magnetic instabilities. The authors also find that the balance between spin-density-wave and ferromagnetic instabilities can be controlled by strain, leading to the possibility of new magnetic phases and superconducting phases with potentially different pairing channels.
Article
Chemistry, Multidisciplinary
Jinmei Qian, Hong Zhang, Gaoyang Li, Lei Jia, Xuebing Peng, Chenglin Zhong, Feng Li, Dongliang Chao, Daqiang Gao
Summary: Magnetic field-enhanced electrocatalytic activity has become an effective strategy for electrocatalytic reactions. This study found that the negative magnetoresistance effect contributes significantly to the enhancement of the oxygen evolution reaction (OER) in La1-xSrxMnO3, and applying a magnetic field of 1.0 T reduces the OER overpotential and charge-transfer resistance. Additionally, the power density of a Zn-air battery (ZnAB) based on La0.8Sr0.2MnO3 improves by 5.9 times under 1.0 T magnetic field. These findings demonstrate that magnetic field regulation of charge and spin ordering provides a deeper understanding for designing high-performance ZnABs.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Review
Chemistry, Multidisciplinary
Yuchi Wan, Lingxi Zhou, Ruitao Lv
Summary: This article discusses the challenges of high-current-density water electrolysis, including charge transfer, mass diffusion, and catalyst stability. Various electrocatalyst design strategies, such as morphology engineering, electronic structure modulation, and surface/interface engineering, are summarized in detail. Recent achievements in practical applications of anion exchange membrane water electrolysis (AEMWE) and proton exchange membrane water electrolysis (PEMWE) technologies are also discussed. Outlooks for future research on high-current-density water electrolysis are provided. This review will guide the rational design of catalysts for high-current-density water electrolysis and promote the development of industrial-scale green H2 production.
MATERIALS CHEMISTRY FRONTIERS
(2023)
Article
Multidisciplinary Sciences
Jing-Jing Xian, Cong Wang, Jin-Hua Nie, Rui Li, Mengjiao Han, Junhao Lin, Wen-Hao Zhang, Zhen-Yu Liu, Zhi-Mo Zhang, Mao-Peng Miao, Yangfan Yi, Shiwei Wu, Xiaodie Chen, Junbo Han, Zhengcai Xia, Wei Ji, Ying-Shuang Fu
Summary: Researchers have successfully fabricated monolayers of CrTe2 and demonstrated antiferromagnetic ordering with spin reorientation under finite magnetic fields. This study enriches our understanding of two-dimensional magnetic materials and provides a foundation for further analysis.
NATURE COMMUNICATIONS
(2022)
Article
Chemistry, Multidisciplinary
Fangping Zhou, Zhao Zhao, Ming Xu, Ting Wang, Huiru Yang, Rong Wang, Jiahui Wang, Haibo Li, Ming Feng
Summary: The catalytic performance of LaCoO3 for the oxygen evolution reaction (OER) can be significantly improved by a high temperature thermal reduction process, which enhances the spin polarization effect through promoting electron transitions of Co ions.
CHEMISTRY-A EUROPEAN JOURNAL
(2022)
Article
Chemistry, Multidisciplinary
Yanqiang Li, Zehao Yin, Xuan Liu, Ming Cui, Siru Chen, Tingli Ma
Summary: Molybdenum carbide-based catalysts show great potential in electrochemical reactions such as the hydrogen evolution reaction and oxygen evolution reaction due to their unique electronic structure and physicochemical properties. Research has systematically summarized the synthesis strategies, structure, and catalytic performance of these catalysts, highlighting the relationships between process-structure-property and analyzing catalytic mechanisms. Existing challenges and future perspectives for further development of molybdenum carbide-based catalysts have also been discussed.
MATERIALS TODAY CHEMISTRY
(2021)
Article
Chemistry, Inorganic & Nuclear
Shengbin Zhou, Zhichao Zhang, Dongjie Bai, Jingzhe Li, Xiang Cui, Zhichuan J. Xu, Yu Tang, Xiaoliang Tang, Weisheng Liu
Summary: The exploration and development of coordination nanocages have significant applications in the field of molecular recognition, supramolecular catalysis, and molecular self-assembly. In this study, a unique 3d-4f metallacage with a stable structure was constructed using a semirigid and nonsymmetric bridging ligand. The metallacage acts as a nanoreactor and has active bimetallic lanthanide cluster units. The experiments demonstrate that the metallacage shows excellent catalytic activity and specificity in three-component aza-Darzens reactions.
INORGANIC CHEMISTRY
(2022)
Editorial Material
Chemistry, Physical
Zhichuan J. Xu
CURRENT OPINION IN ELECTROCHEMISTRY
(2022)
Article
Nanoscience & Nanotechnology
Yueping Bao, Weili Yan, Ping-Ping Sun, Justin Zhu Yeow Seow, Shun Kuang Lua, Wen Jie Lee, Yen Nan Liang, Teik-Thye Lim, Zhichuan J. Xu, Kun Zhou, Xiao Hu
Summary: Porous boron nitride nanorods synthesized via pyrolysis demonstrate excellent catalytic performance in organic degradation by generating singlet oxygen. The defects on the porous boron nitride drive non-radical oxidation reactions, resulting in high robustness and less toxic intermediates. These findings provide new theoretical and practical insights for using porous boron nitride as a non-metal catalyst.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Multidisciplinary
Tianze Wu, Yuanmiao Sun, Xiao Ren, Jiarui Wang, Jiajia Song, Yangdan Pan, Yongbiao Mu, Jianshuo Zhang, Qiuzhen Cheng, Guoyu Xian, Shibo Xi, Chengmin Shen, Hong-Jun Gao, Adrian C. Fisher, Matthew P. Sherburne, Yonghua Du, Joel W. Ager, Jose Gracia, Haitao Yang, Lin Zeng, Zhichuan J. Xu
Summary: Water electrolysis is a promising technique for carbon neutral hydrogen production, but the development of robust and low-cost anode catalysts is still a challenge. This study reports the unique reconstruction behaviors of a pre-catalyst, CoFe2S4, and its reconstruction chemistry for high oxygen evolution reaction (OER) activity. The reconstructed CoFe2S4 shows an interface spin channel that optimizes the energetics of OER steps and facilitates spin sensitive electron transfer to reduce the kinetic barrier of O-O coupling. The advantage of this reconstruction is also demonstrated in a membrane electrode assembly (MEA) electrolyzer.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Jingjie Ge, Xiao Ren, Riccardo Ruixi Chen, Yuanmiao Sun, Tianze Wu, Samuel Jun Hoong Ong, Zhichuan J. J. Xu
Summary: The reaction kinetics of spin-polarized oxygen evolution reaction (OER) can be enhanced by ferromagnetic (FM) catalysts under an external magnetic field. However, applying a magnetic field necessitates additional energy consumption and creates design difficulties for OER. We demonstrate that a single-domain FM catalyst without external magnetic fields exhibits a similar OER increment to its magnetized multi-domain one, indicating that an external magnetic field is not a requirement to reap the benefits of magnetic catalysts.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Electrochemistry
Justin Zhu Yeow Seow, Yubo Chen, Jingjie Ge, Adrian C. C. Fisher, Zhichuan J. J. Xu
Summary: This article investigates the poisoning effects of sulfate ions on catalysts and finds that sulfate ions can cause a decrease in catalyst activity. The main reason is that sulfate ions can form precipitates on the catalyst's surface, blocking the electrolyte channels and reducing the number of active sites. This plays a crucial role in the commercialization of proton exchange membrane water electrolyzers.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2023)
Article
Multidisciplinary Sciences
Xiao Ren, Tianze Wu, Zizhao Gong, Lulu Pan, Jianling Meng, Haitao Yang, Freyja Bjork Dagbjartsdottir, Adrian Fisher, Hong-Jun Gao, Zhichuan J. Xu
Summary: The magnetization of magnetic catalysts promotes their activity towards the oxygen evolution reaction (OER). However, the source of this enhancement has been unclear. It was thought that the spin polarization promoted OER occurs on the magnetic domains, but the enhancement should have occurred without magnetization. This study demonstrates that the enhancement actually comes from the disappeared domain wall upon magnetization. The domain wall reformats into a single domain, facilitating the OER and resulting in an overall increment on the electrode.
NATURE COMMUNICATIONS
(2023)
Article
Energy & Fuels
Xinlong Lin, Justin Zhu Yeow Seow, Zhichuan J. Xu
Summary: The PEM water electrolyzer plays a crucial role in green hydrogen production and offers advantages such as low resistance and improved mass transport for higher energy efficiency and reduced capital costs. Utilizing PEM enables sustainable hydrogen production with superior energy efficiency, higher purity, and flexibility. As PEM electrolyzers continue to evolve, larger-scale sustainable hydrogen production will become a reality in the future.
JOURNAL OF PHYSICS-ENERGY
(2023)
Article
Nanoscience & Nanotechnology
Jinyan Huo, Liujun Jin, Chunchao Chen, Dongyun Chen, Zhichuan Xu, Cecilia Devi Wilfred, Qingfeng Xu, Jianmei Lu
Summary: This study demonstrates the production of sulfur using a sulfide oxidation reaction (SOR) technique, and shows that a NiS-doped cobalt sulfide NiS-CoS-supported NiCo alloy foam can serve as a superior electrocatalyst with high stability. It also reveals the sulfurophobicity feature of the catalyst, preventing electrode corrosion during the SOR process. Additionally, the study unveils the chain-growth mechanism of the SOR.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Multidisciplinary
Leilei Liang, Ruoling Yu, Samuel Jun Hoong Ong, Yi Yang, Baoshan Zhang, Guangbin Ji, Zhichuan J. Xu
Summary: Inspired by cephalopod skin, we developed an adaptive multispectral mechano-optical system based on bilayer acrylic dielectric elastomer (ADE)/silver nanowire (AgNW) films, which can reconfigure the surface morphology and regulate the optical and microwave properties. The designed system features switching between visible-infrared-microwave transparency and opacity, continuous regulation, wide spectral window, excellent recyclability, and rapid response time. It has great potential for applications in smart windows, switchable EM devices, dynamic thermal management, adaptive visual stealth, and human motion detection.
Article
Nanoscience & Nanotechnology
Dongsheng Shao, Tianze Wu, Xiaoning Li, Xiaoming Ren, Zhichuan J. J. Xu
Summary: The integration of magnetic fields with magnetoelectric coupling materials has potential for highly efficient energy conversion and storage in electrocatalysis applications. Manipulation of the coexistence of ferromagnetic and ferroelectric ordering in multiferroic materials by magnetic or electric fields can lead to unique spin-related physical properties in catalysts, resulting in interesting effects on electrocatalytic reactions.
Article
Nanoscience & Nanotechnology
Jinyan Huo, Liujun Jin, Chunchao Chen, Dongyun Chen, Zhichuan Xu, Cecilia Devi Wilfred, Qingfeng Xu, Jianmei Lu
Summary: This study demonstrates the use of a sulfur-doped nickel-cobalt sulfide catalyst for the sulfur production reaction from sulfide solution. The catalyst shows superior electrocatalytic activity and stability compared to other non-noble metal-based catalysts. The unique sulfurophobicity feature of the catalyst prevents electrode corrosion during the reaction. The study also reveals the chain-growth mechanism of the reaction and the direct transfer of electrons during the low-energy-consumption process.
ACS APPLIED MATERIALS & INTERFACES
(2023)
