Results 41 to 50 of about 3,491 (200)

Front‐Loading Zn2+ via Lattice‐Breathing‐Enabled Early‐Stage Co‐Intercalation for Ultrastable Zn‐Ion Batteries

Advanced Science, EarlyView.
This study introduces In3+ into δ‐MnO2 to create a lattice breathing effect via a dynamic strain field, which establishes efficient ″ polaronic superhighways″ for charge transport. We uncover an unconventional two‐stage (Zn2+/H+ co‐insertion followed by Zn2+‐dominant) mechanism that enables reversible structural adjustment. This approach simultaneously
Haitao Li, Min Bu, Songlin Li, Huili Cao, Qi Lei, Yang Wang, Limin Zhou, Haigang Liu, Shumin Yang, Zhenhua Chen, Ying Zou, Bo Sun, Wen Wen, Yong Wang, Xiangzhi Zhang, Renzhong Tai   +15 more
wiley   +1 more source

Deciphering the Local Environment of Electrocatalytic Metal Sites with X‐ray Absorption Fine Structure

Small Structures
Electrocatalysis plays a pivotal role in energy conversion and holds significant promise for the development of new energy sources. Understanding the intricate atomic‐level interplay between active sites and electrocatalytic activity is essential for ...
Nan Zhang, Jianqiang Wang
doaj   +1 more source

A new QEXAFS system on the general XAFS beamline at the Shanghai Synchrotron Radiation Facility

Journal of Synchrotron Radiation, 2022
A new quick-scanning extended X-ray absorption fine-structure (QEXAFS) system for in situ studies has been developed and tested on the general XAFS beamline at the Shanghai Synchrotron Radiation Facility. In the new system, an analog-to-digital converter
Yongnian Zhou, Songqi Gu, Ying Zhao, Zheng Jiang, Zhaohong Zhang   +4 more
doaj   +1 more source

Ultra‐Radiostable Covalent Conformationally Interlocked Networks Enabling a Universal Radiometal‐Labeling Platform for Cancer Radioembolization

Advanced Science, EarlyView.
Conjugated poly(imide dioxime)‐based microspheres establish a radiometal coordination‐driven conformational interlocked network with ultra‐high radiostability. This platform enables low‐temperature, multi‐radionuclide labeling for SPECT/PET/MRI imaging and radionuclide therapy. Mechanistic insights from EXAFS and DFT reveal enhanced stability, while in
Xiao Xu, Zhenwen Zhao, Yangjie Wang, Zhigang Liu, Zhijie Liu, Xiaoling Li, Zhichen Mao, Lu Xu, Gan Lin, Gang Liu, Hongjuan Ma   +10 more
wiley   +1 more source

In-situ XAFS measurements of amorphous Li3PO4-doped V2O5 cathode for all-solid-state thin-film Li-ion batteries

Scientific Reports
In this study, in-situ X-ray absorption fine structure (XAFS) measurements were conducted on amorphous Li3PO4-doped V2O5 (VO-LPO) cathode in an all-solid-state thin-film lithium-ion battery to observe the behavior of Li ions during charge/discharge.
Keisuke Omosako, Takeshi Watanabe, Satoshi Ogawa, Isaku Kanno   +3 more
doaj   +1 more source

Thermodynamic Properties and Anharmonic Effects in XAFS Based on Anharmonic Correlated Debye Model Debye–Waller Factors

Advances in Materials Science and Engineering, 2018
Thermodynamic properties and anharmonic effects in X-ray absorption fine structure (XAFS) have been studied based on the anharmonic correlated Debye model Debye–Waller factors presented in terms of cumulant expansion.
Nguyen Ba Duc, Nguyen Van Hung, Ha Dang Khoa, Dinh Quoc Vuong, Tong Sy Tien   +4 more
doaj   +1 more source

Cobalt Single‐Atom Nanozyme for Enhanced Intestinal Radioprotection and Tumor Radiosensitization via Bidirectional ROS Modulation

Advanced Science, EarlyView.
Orally administered, pH‐responsive Co‐SAN exerts dual functions: in the alkaline intestinal milieu, it scavenges reactive oxygen species (ROS) and suppresses the PI3K/AKT pathway and NETs formation, thus providing radioprotection; whereas in the acidic tumor microenvironment, it generates ROS and alleviates hypoxia, thereby enhancing radiosensitization.
Shengqi Yin, Junjie Li, Yishu Zou, Yang Liu, Yilin Zheng, Lu Yu, Wanying Zheng, Yajun Zou, Zehui Zhang, Tao Li, Peiqun Yin, Jianlin Zhang, Yuen Wu, Yi Ding   +13 more
wiley   +1 more source

Advanced X-ray absorption spectroscopy for probing dynamics in CO2 reduction reaction electrocatalysts

Communications Materials
Electrochemical CO2 conversion to value-added fuels presents an appealing avenue to realize low-carbon footprint. However, achieving sustainable energy conversion hinges on a comprehensive analysis of the catalyst surface-interface. X-ray Absorption Fine
Beibei Sheng, Dengfeng Cao, Shuangming Chen, Nan Zhang, Jianqiang Wang, Li Song   +5 more
doaj   +1 more source

Two‐Dimensional Quaternary Alloys of (RuMoVNb)Se2 for Superior Hydrogen Evolution Reaction Catalysis

Advanced Science, EarlyView.
Composition‐tuned (RuMoVNb)Se2 quaternary alloy nanosheets are synthesized via colloidal reactions. Incorporation of Ru into (MoVNb)Se2 ternary alloys results in more metallic electronic structures and significantly enhances their electrocatalytic activity for the hydrogen evolution reaction (HER) under alkaline, acidic, and neutral conditions.
Junaid Ihsan, Ju Yeon Kim, Irtiqa Mishal, Jun Hyeok Choi, Jeong Eun An, Youn Jun Choi, Doyeon Kim, In Hye Kwak, Gianvito Vilé, Ik Seon Kwon, Hong Seok Kang, Jeunghee Park   +11 more
wiley   +1 more source

Vanadium Cation Exchange‐Driven Reconstruction of MOF‐Derived Cobalt Hydroxide Electrodes for Electrocatalysis and Energy Storage

Advanced Science, EarlyView.
A room‐temperature vanadium cation exchange strategy is developed to achieve simultaneous structural reconstruction and electronic/defect modulation of ZIF‐67 on nickel foam. The resulting mesoporous V20–Co(OH)2 electrode exhibits superior OER activity with low overpotentials and enhanced lattice oxygen participation.
Yongbeen Kim, Seungwoo Han, Wonyoung Lee
wiley   +1 more source