Results 141 to 150 of about 25,467 (256)
Advanced Science, EarlyView.Ti substitution stabilizes Co‐free high‐Ni layered oxides through both structural and electronic effects. TiO6 octahedra act as compensatory structural units that help interrupt cooperative Jahn–Teller distortion and suppress detrimental phase transitions, while the electron‐withdrawing inductive effect of Ti stabilizes the oxygen lattice. As a result,
Bixian Ying +19 more
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Advanced Science, EarlyView.An interfacial electric field engineering strategy is proposed to trigger the self‐limiting surface reconstruction of high‐entropy heterostructures. Driven by this built‐in field, the controlled sacrificial leaching of W evolves a robust active layer, enabling exceptional oxygen evolution performance and ultrastability at ampere‐level current densities
Liang Yan +4 more
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Advanced Science, EarlyView.A conductive ZrB2 ceramic composite strategy was developed for Mg3(Sb, Bi)2 thermoelectrics to regulate carrier transport and phonon scattering through heterointerface engineering. The 1.0 wt.% ZrB2 composite achieved enhanced room‐temperature performance, with a power factor of 28.51 µW cm−1 K−2 and a peak ZT of 1.22 at 573 K.
Yangyang Xu +7 more
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Advanced Science, EarlyView.An amalgamated lithium metal method enables systematic control of Sn–Cu active‐site dimensions from isolated atoms to nanocrystallites. Increasing the metal loading shifts CO2 electroreduction selectivity from acetaldehyde on highly dispersed Sn–Cu sites to formate on Sn‐rich crystallites, revealing how bimetallic dispersion and local coordination ...
Minghao Xie +6 more
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Advanced Science, EarlyView.We report the rational design of artificial photocatalysts with asymmetrically coordinated dual‐metal centers and a tailored microenvironment, broadly applicable strategy is established for the synthesis of multivariate zirconium‐based metal–organic frameworks, offering a platform for precisely tuning active‐site configurations to optimize ...
Yuxin Lu +11 more
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The electronic structure of La0.85Zr0.15MnO3 studied by X-ray absorption spectroscopy
, 2010 碩士本論文主要以X光吸收光譜實驗研究鑭鋯錳氧的電子與原子結構。實驗包含室溫下Mn K- 和O K- 與Mn L3,2-edge X光吸收近邊緣結構(X-ray absorption near edge structure，XANES)，以及分別在不同溫度和條件下量測O K-與Mn L3,2-edge XANES和Mn K-edge延伸X光吸收精細結構(Extended x-ray absorption fine structure，EXAFS)。由常溫下Mn K-edge和O K-與Mn L3,2 ...
李鴻民; Lee, Hang-ming
core
Sub-20 nm Hard X-ray Spectromicroscopy Reveals Nanoscale Redox Heterogeneity in Ultrafine Particulates. [PDF]
ACS NanoPattammattel A +8 more
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Advanced Science, EarlyView.Controlled Pt–Pt fine structure in square‐planar Pt(II) complexes governs metal–metal‐to‐ligand charge‐transfer (MMLCT) state formation, exciton dynamics, and organic light‐emitting diode performance. Short Pt–Pt contacts in Pt(fppz)2 enable coherent metal–metal coupling, sub‐microsecond emission and an external quantum efficiency of 29%, whereas ...
Atul Shukla +15 more
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In Situ high temperature study of titanium coordination in a Rb-silicate glass and liquid to 1400°C [PDF]
, 1994 Mottana, Annibale +5 more
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Fine-tuning ab initio XANES spectra calculations using the Bayesian optimization algorithm. [PDF]
J Synchrotron RadiatSapronov AA, Doronkin DE, Grunwaldt JD.
europepmc +1 more source