Article
Chemistry, Physical
Chenyu Lu, Jiacheng Ge, Si Lan, Xuelian Wu, Zhenduo Wu, Lingxiang Shi, Anding Wang, Yan Zhang, Chi Long Lai, Kit Ying Leung, Junhua Luan, Elliot Paul Gilbert, Xun-Li Wang
Summary: The alpha-Fe precipitates in a high-performance Fe83.3Si4B8P4Cu0.7 nanocrystalline alloy were found to have a core-shell nanostructure through small-angle neutron scattering and atom probe tomography. The core-shell structure, with P-enriched shells around Fe-enriched cores, was visualized directly through atom probe tomography, attributed to the large negative heat of mixing between Fe and P elements and the slow diffusion of P atoms. These core-shell nanostructures induced by nanoscale partitioning effectively stabilize the residual amorphous matrix and suppress crystal growth. The findings provide insights into the microstructure of Fe-based amorphous alloys and have direct implications in alloy design for improving soft magnetic properties.
Article
Chemistry, Multidisciplinary
Hongbin Sheng, Hao Qu, Biao Zeng, Yanxin Li, Chenghui Xia, Can Li, Lixin Cao, Bohua Dong
Summary: The rational design of efficient and cost-effective electrocatalysts for oxygen evolution reaction (OER) is crucial for clean energy technologies. A new approach is proposed to design electrocatalysts with abundant active sites by utilizing crystalline/amorphous heterostructure. The Fe-NiCoHPi electrocatalyst with cauliflower-like structure exhibits remarkable activity and unceasing durability, making it a promising candidate for sustainable energy devices.
Article
Energy & Fuels
Abdelkadir Mahieddine, Leila Adnane-Amara, Thinhinane Tebaa, Cylia Saba
Summary: In order to develop new positive electrode materials with high electrochemical performance for energy storage applications, the design of complex morphologies with a core-shell structure based on MS sulfide materials and nanomaterials metallic is essential. In this study, an asymmetric supercapacitor (ASC) with high energy density was fabricated by combining a NiS/Co3S4@h-Ni NWs battery-like electrode with alpha-MnO2 as a pseudo-capacitive electrode. The results showed that the NiS/Co3S4@h-Ni NWs electrode exhibited excellent electrochemical performance, with a specific capacity of 1893 C/g and a retention of 98.63% after 10,000 charge-discharge cycles.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Engineering, Environmental
Jiaxu Gong, Weige Luo, Yang Zhao, Mingzhen Xie, Jiaheng Wang, Junxiao Yang, Yatang Dai
Summary: A facile method for high-performance electrode materials for alkaline aqueous batteries is reported in this study, which shows outstanding electrochemical performance and solves the issue of low capacity of anode material in alkaline electrolytes. The mechanism of the influence of surface coating on electrode material performance is revealed. The assembled flexible battery exhibits excellent energy storage performance and potential applications.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Physical
Tianyu Shi, Chenyuan Zhao, Yuxiang Zhou, Haihong Yin, Changqing Song, Lin Qin, Zhiliang Wang, Haibao Shao, Ke Yu
Summary: By designing a special core-shell structured cathode, the challenges hindering the practical applications of lithium-sulfur batteries have been overcome, leading to improved battery performance.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
Article
Engineering, Environmental
Zhiyang Song, Gan Wang, Ya Chen, Qiang Chang, Yan Lu, Zhaoyin Wen
Summary: Transition metal sulfides are promising anode materials for sodium ion batteries (SIBs), but their low conductivity and large volume effects hinder their practical applications. In this study, a multilevel-carbon supported NiS anode material with a complex hierarchical hollow structure was successfully synthesized via nanostructure engineering and carbon hybridization, showing excellent sodium storage performance.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Materials Science, Multidisciplinary
Wei Song, Hai Wang, Konrad Koenigsmann, Shuyuan Zhang, Ling Ren, Ke Yang
Summary: Fatigue strength is crucial for evaluating titanium alloy orthopedic implants. The fabrication of a triple-phase core-shell micro-nanostructure in Ti6Al4V5Cu alloy enhances its fatigue resistance. The average grain size of α, β, and Ti2Cu phases are 585 nm, 421 nm, and 135 nm, respectively. The formation of plastic zones at the crack tip by the soft β phase in the conjugated b/Ti2Cu shells impedes fatigue crack propagation. The fatigue strength of the core-shell structured alloy is 750 MPa, 36.3% higher than Ti6Al4V alloy.
MATERIALS & DESIGN
(2023)
Article
Nanoscience & Nanotechnology
Liren Qiu, Wensheng Yang, Qian Zhao, Shengshang Lu, Xinhai Wang, Min Zhou, Benfu Tao, Quan Xie, Yunjun Ruan
Summary: The high theoretical specific capacitance, quick redox rate, and superior electrical conductivity of transition metal sulfide materials make them a promising candidate for supercapacitor electrodes.
ACS APPLIED NANO MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Sun-Woo Kim, Jae Chul Ro, Su-Jeong Suh
Summary: Ni/Ni3C core-shell nanoparticles with an average diameter of approximately 120 nm were synthesized via a chemical solution method. It was observed that a thin Ni3C shell measuring approximately 1-4 nm formed on the surface of the nanoparticles over time, and the Ni core consisted of multiple grains. The saturation magnetization of the core-shell nanopowders decreased in proportion to the amount of Ni3C. The synthesis mechanism of the Ni/Ni3C core-shell nanoparticles was proposed based on XRD, XPS, and TEM analyses.
Article
Chemistry, Physical
Ji Ma, Yangzhan Xu, Baoqi Duan, Youjie Qiu, Jinxu Liang, Yunliang Xu, Yujia Zhang, Mingxu Zhang, Ziteng Cao, Haotian Wang, Jiye An, Chunting Liu
Summary: A two-step route was used to grow 1T-MoS2 nanosheets on NiS porous-hollow micro-spheres. The tightly wrapped MoS2 sheets on NiS spheres activated inert sulfur atoms on the basal plane of 1T-MoS2. The unique structure acted as a concentric spherical capacitor, storing a large quantity of K+ ions and delivering stable capacity even after 1000 cycles.
APPLIED SURFACE SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Luomeng Chao, Changwei Sun, Jiaxin Li, Miao Sun, Jia Liu, Yonghong Ma
Summary: In this paper, core-shell structured CsxWO3@TiO2 was prepared by coating CsxWO3 nanoparticles with TiO2. The crystal structure and optical properties of the material were studied. The results showed that TiO2-coated CsxWO3 exhibited good stability in actual environment, and its transparent heat shielding performance decreased with the increase in TiO2 shell thickness. This work provides a new route to promote the applications of tungsten bronze as heat shielding materials.
Article
Engineering, Electrical & Electronic
K. Jeevagan, K. Jagannathan
Summary: In this study, nickel sulphide (NiS) nanoparticles were synthesized using a microwave-assisted-solvothermal method, and NiS-PANI nanocomposites were prepared at different weight percentages. Characterization techniques including XRD, UV-visible absorption spectra, FESEM, and FTIR were used to analyze the synthesized materials, while LCZ parameters were measured for dielectric analysis.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Chemistry, Physical
Weibo Huang, Zhouyu Tong, Yuxin Bi, Mingliang Ma, Zijian Liao, Guanglei Wu, Yong Ma, Siyu Guo, Xiaoyu Jiang, Xueping Liu
Summary: Coralloid core-shell structure NiS/Ni3S4@PPy@MoS2 nanowires were elaborately designed and synthesized for exceptional microwave absorption properties. The 50 wt.% loading absorber showed the optimal performance with a minimum reflection loss of -51.29 dB at 10.1 GHz and an effective absorption bandwidth of up to 3.24 GHz.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
Article
Chemistry, Multidisciplinary
Yuhua Zhang, Guanmei Wang, Na Li, Di Ke, Jun Wang
Summary: In this study, a heterogeneous material with a 3D core-shell structure was constructed on carbon cloth through solvothermal reaction and electrodeposition methods, aiming to enhance the electrocatalytic performance for oxygen evolution reaction. The synergistic effect among the components and the improved durability of the catalyst were achieved by involving Fe-NiS and encapsulating it in NiCeOx shell. The material exhibited excellent performance in terms of overpotential, Tafel slope, and durability.
Article
Energy & Fuels
Ya Chen, Longjun Wang, Hui Gan, Yuanhe Jiang, Jiangbang Feng, Jiuqing Liu, Xichang Shi
Summary: This study reports a method for fabricating electrodes for supercapacitors using electrochemical deposition, hydrothermal conversion, and sulfurization. The binder-free NiCo2S4@NiS/CoS electrode exhibits high specific capacitance, excellent high-rate capability, and good cycling performance, making it a suitable cathode material for supercapacitors.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Chemistry, Physical
P. A. Christensen, P. S. Attidekou, R. G. Egdell, S. Maneelok, D. A. C. Manning, R. Palgrave
JOURNAL OF PHYSICAL CHEMISTRY C
(2017)
Article
Geosciences, Multidisciplinary
David A. C. Manning
NATURAL RESOURCES RESEARCH
(2018)
Letter
Multidisciplinary Sciences
David Rickard
Article
Engineering, Geological
Christopher J. Teasdale, Jean A. Hall, John P. Martin, David A. C. Manning
QUARTERLY JOURNAL OF ENGINEERING GEOLOGY AND HYDROGEOLOGY
(2019)
Article
Geochemistry & Geophysics
David Rickard
EARTH AND PLANETARY SCIENCE LETTERS
(2019)
Review
Geography, Physical
David Rickard
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
(2019)
Editorial Material
Geosciences, Multidisciplinary
David A. C. Manning, Annock G. Chiwona, Sanem Acikalin, Mark T. Ireland
JOURNAL OF THE GEOLOGICAL SOCIETY
(2021)
Article
Geochemistry & Geophysics
Jiarui Liu, Andre Pellerin, Jiasheng Wang, David Rickard, Gilad Antler, Jie Zhao, Zhou Wang, Bo Barker Jorgensen, Shuhei Ono
Summary: The marine sulfate inventory is responsible for roughly half of the organic matter mineralization globally in marine sediments, through microbial sulfate reduction. Multiple sulfur isotope ratios were measured to trace the two different sulfate reduction processes. Different sulfur isotope compositions were found in shelf sediments compared to slope sediments, indicating variations in the processes of sulfate reduction.
GEOCHIMICA ET COSMOCHIMICA ACTA
(2022)
Review
Chemistry, Physical
David A. C. Manning
Summary: Mineral reactions and weathering in soils occur on a human timescale, providing essential nutrients and removing atmospheric CO2. Silicate minerals like pyroxene and plagioclase can release silica for plant uptake, while quartz is inert. Clay minerals can also supply sufficient silica. Rapid weathering of silicate minerals is evident in soils, supported by vegetation.
Article
Green & Sustainable Science & Technology
Oliver Heidrich, Alistair C. Ford, Richard J. Dawson, David A. C. Manning, Eugene Mohareb, Marco Raugei, Joris Baars, Mohammad Ali Rajaeifar
Summary: This paper presents a tool named LAYERS that utilizes material flow analysis to illustrate the complex connections in carbon technology supply chains. The tool focuses on a case study of cobalt for lithium-ion batteries used in electric vehicles, and visualizes the intended and unintended consequences of cobalt demand. LAYERS integrates a geographic information system architecture and provides a clear understanding of the location of raw materials and their geopolitical implications.
Article
Multidisciplinary Sciences
David K. Okot, Paul E. Bilsborrow, Anh N. Phan, David A. C. Manning
Summary: This study analyzed the pyrolysis and combustion behavior of agricultural residues and found that increasing the heating rate resulted in higher degradation rates and gaseous yields. The activation energies determined by different methods varied, indicating the complex nature of these processes.
Article
Soil Science
Antonio Carlos de Azevedo, David Andrew Charles Manning
Summary: The term Sum of Bases has different meanings in Soil Science and the Remineralizer Regulations. This can lead to misunderstandings, especially between the agricultural and mining communities, hindering the progress in the use of this soil amendment. In this scientific note, we propose using subscripts R (for Rock) and S (for Soil) to differentiate between the two definitions. This approach helps avoid confusion and facilitates the correct interpretation of laboratory data. We provide a practical example, a conversion table, and a formula to estimate the potential increase in SBS caused by SBR.
REVISTA BRASILEIRA DE CIENCIA DO SOLO
(2023)
Article
Agriculture, Multidisciplinary
Joana de Carvalho Baptista, Neil Duncan Gray, Miriam Buchler Tarumoto, Ian Singleton, Clare Maria McCann, David Andrew Charles Manning
Summary: This study identified microbial communities associated with alkali feldspar surfaces and found that Actinobacteria play a key role in the weathering of these rocks, potentially impacting nutrient release and agronomic benefits.
PESQUISA AGROPECUARIA BRASILEIRA
(2022)
Article
Engineering, Civil
M. Ehsan Jorat, Ben W. Kolosz, Mark A. Goddard, Saran P. Sohi, Nurten Akgun, Dilum Dissanayake, David A. C. Manning
INTERNATIONAL JOURNAL OF GEOMATE
(2017)
Article
Geochemistry & Geophysics
David Rickards, Marc Mussmann, Jeffrey A. Steadman
