Results 151 to 160 of about 29,896 (261)

Effective-mass theory for hierarchical self-assembly of GaAs/AlxGa1-xAs quantum dots

, 2005
The electronic structures in the hierarchical self-assembly of GaAs/AlxGa1-xAs quantum dots are investigated theoretically in the framework of effective-mass envelope function theory.
Chang K, Xia JB, Li, SS, Chinese Acad Sci, Inst Semicond, State Key Lab Superlattices & Microstruct, POB 912, Beijing 100083, Peoples R China., Li SS   +3 more
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Disentangling Elemental Roles in an Amorphous Medium‐Entropy Electrocatalyst for Oxygen Evolution

Advanced Science, EarlyView.
An amorphous medium‐entropy FeCoNiMo‐a catalyst with a unique nanoring architecture is synthesized via a solvothermal method. The catalyst exhibits exceptional stability in anion exchange membrane water electrolysis, maintaining stable operation for over 600 h at 1 A cm−2.
Jinhu Wu, Xianjun Cao, Cheng Gong, Dongfang Li, Yaojie Lei, Daojin Zhou, Pengpeng Zhang, Zeliang Wu, Bin Yu, Xingwang Peng, Bernt Johannessen, Somnath Chanda Roy, Jinqiang Zhang, Hao Liu, Yufei Zhao   +14 more
wiley   +1 more source

Sublattice‐Resolved Magnetoelastic Coupling and Opposing Pressure Responses in the Frustrated Magnetocaloric GdMn2O5

Advanced Science, EarlyView.
In GdMn2O5, sublattice‐resolved EXAFS and diffraction analysis reveal pronounced spin‐phonon coupling and an unexpected opposing pressure response: the Mn‐driven Néel temperature slightly decreases while the Gd‐sublattice ordering temperature rises under pressures up to 0.86 GPa.
Romualdo S. Silva Jr., João E. Rodrigues, Javier Gainza, Henrik L. Andersen, Federico Serrano‐Sánchez, Neven Biskup, Olivier Mathon, Norbert M. Nemes, José L. Martínez, José A. Alonso   +9 more
wiley   +1 more source

Understanding the Electronic Structure of Ruthenium Oxides during Redox Cycling with High Energy Resolution X-ray Absorption Spectroscopy. [PDF]

J Phys Chem Lett
Kim RS, Paredes Mellone OA, Vinson J, Garcia-Esparza AT, Liu M, Chris-Okoro I, Cherono S, Zhao EJ, Ding Y, Li H, Zhang L, Hautier G, Cuk T, Suntivich J, Kumar D, Sokaras D, Yano J.   +16 more
europepmc   +1 more source

Controlled Lattice Distortion and Lattice‐Strain‐Engineered CoCuIr Alloy toward Preferential Chlorine Tolerant Direct Seawater Electrolysis

Advanced Science, EarlyView.
A lattice‐strain‐engineered Co0.28Cu0.67Ir0.05 trimetallic alloy nanoparticle electrocatalyst is rationally designed for efficient alkaline seawater electrolysis. Larger Ir atoms in the CoCu lattice modulate the local coordination environment, generating compressive lattice strain and highly active catalytic sites.
Ankur Kumar, Abhinav Yadav, Saloni Latiyan, Palash J. Thakuria, Ankur K. Guha, Sasanka Deka   +5 more
wiley   +1 more source

Revealing Nafion-Induced Copper Modifications by Combining In Situ and Ex Situ X-Ray Absorption Spectroscopy. [PDF]

Small
Napal Azcona I, Pollastri S, Bisetto M, Bevilacqua M, Salvador F, Sbuelz L, Zacchigna M, Biagi R, Fornasiero P, Nappini S, Magnano E.   +10 more
europepmc   +1 more source

Co‐Ligand‐Induced Electronic Modulation Controls Substrate Adsorption and Selectivity in Biomass Electrooxidation

Advanced Science, EarlyView.
A molecular design strategy is reported that introduces distinct anionic co‐ligands into Cu‐based catalysts to modulate the electronic density of the metal center and, consequently, its interaction with both OHads and HMF. The work establishes co‐ligand engineering as an effective strategy for precise interfacial adsorption control in electrocatalysis,
Chen Gao, Bin Han, Shuai Chen, Shuai Yan, Ralf Weisbarth, Jorg Daniels, Nikolay Kornienko   +6 more
wiley   +1 more source

Nanocluster‐Assisted OH Ligand Modification Optimizes Activity and Stability of Fe‐N‐C Catalysts

Advanced Science, EarlyView.
A nanocluster‐assisted ligand engineering stabilizes OH‐modified FeN4 active sites through strong electronic coupling between isolated Fe atoms and adjacent nanoclusters. This synergy optimizes oxygen‐intermediate adsorption, lowers ORR energy barriers, and breaks the conventional activity–stability trade‐off, enabling high ORR activity, exceptional ...
Xue Zhao, Junpeng Chen, Shice Wang, Zhao Yu, Jing Wang, Qiuming Peng, Ge Li   +6 more
wiley   +1 more source

Tri‐Functional Electrocatalysis for Zinc–Air Battery Coupled Water Splitting: A Catalyst‐Electrode‐Device‐System Perspective

Advanced Science, EarlyView.
This review establishes a catalyst–electrode–device–system framework for tri‐functional HER/OER/ORR electrocatalysis that couples water splitting with Zn–air batteries. Five catalyst families are covered: noble‐metal, metal‐based, single‐atom, heterostructure, and metal‐free systems.
Xixi Di, Chao Duan, Shuzhen Li, Yiyang Che, Xiaoshuang Liu, Chuanyin Xiong, Mengxia Shen, Yichao Wang, Derek Hao, Yonghao Ni   +9 more
wiley   +1 more source

Electron transport through hierarchical self-assembly of GaAs/AlxGa1-xAs quantum dots

, 2005
The transmission of electrons through a hierarchical self-assembly of GaAs/AlxGa(1-)xAs quantum dots (QDs) is calculated using the coupled-channel recursion method.
Xia JB, Hirose K, Li, SS, CCAST, World Lab, POB 8730, Beijing 100080, Peoples R China. 电子邮箱地址: sslee@red.semi.ac.cn, Li SS   +3 more
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