Results 61 to 70 of about 297,971 (289)

Unlocking Ultra‐Long Cycle Stability of Li Metal Electrode by Separators Modified by Porous Red Phosphorus Nanosheets

Advanced Functional Materials, EarlyView.
Coating the standard polypropylene separator with a porous red phosphorous nanosheet greatly improves cycling performance in Li electrode cells. The phosphorus‐based surface chemistry deactivates electrolyte solvent decomposition and enhances the cleavage of F‐containing salt, resulting in an inorganic‐dominated electrolyte interphase (SEI) composition
Jiangpeng Wang, Mingzi Sun, Feng Lang, Zhijun Cai, Xitao Hu, Yao Gao, Chao Lin, Xueqiang Zhang, Bolong Huang, Quan Li   +9 more
wiley   +1 more source

Total Fluorine Measurements in Food Packaging: How Do Current Methods Perform?

Environmental Science and Technology Letters, 2019
Per- and polyfluoroalkyl substances (PFASs) represent a class of more than 4000 compounds. Their large number and structural diversity pose a considerable challenge to analytical chemists.
L. Schultes, G. Peaslee, J. Brockman, A. Majumdar, S. McGuinness, J. Wilkinson, O. Sandblom, R. A. Ngwenyama, Jonathan P. Benskin   +8 more
semanticscholar   +1 more source

Biomimetic synthesis of vesicular covalent organic frameworks by gemini surfactants for in-situ enzyme cascade immobilization

Nature Communications
In nature, enzymes in biofilms often lack robustness and chemical functionality. Covalent organic frameworks (COFs) have emerged as a robust platform for enzyme immobilization, but mimicking biofilm structures for in-situ enzyme immobilization remains ...
Jin Zhang, You Li, Jiaxuan Li, Lin Zhu, Shangbin Jin   +4 more
doaj   +1 more source

Cu‐Based MOF/TiO2 Composite Nanomaterials for Photocatalytic Hydrogen Generation and the Role of Copper

Advanced Functional Materials, EarlyView.
HKUST‐1/TiO2 composite materials show a very high photocatalytic hydrogen evolution rate which increases as a function of the irradiation time until reaching a plateau and even surpasses the performance of the 1%Pt/TiO2 material after three photocatalytic cycles.
Alisha Khan, Marie Le Pivert, Alireza Ranjbari, Diana Dragoe, Daniel Bahena‐Uribe, Christophe Colbeau‐Justin, Christian Herrero, Dorota Rutkowska‐Zbik, Johnny Deschamps, Hynd Remita   +9 more
wiley   +1 more source

Improved Cycling Performance of Li‐Excess Cation‐Disordered Cathode Materials upon Fluorine Substitution

Advanced Energy Materials, 2018
The recent discovery of Li‐excess cation‐disordered rock salt cathodes has greatly enlarged the design space of Li‐ion cathode materials. Evidence of facile lattice fluorine substitution for oxygen has further provided an important strategy to enhance ...
Zhengyan Lun, B. Ouyang, D. Kitchaev, R. Clément, Joseph K. Papp, M. Balasubramanian, Yaosen Tian, Teng Lei, Tan Shi, B. McCloskey, Jinhyuk Lee, G. Ceder   +11 more
semanticscholar   +1 more source

The fluorine abundance in a Galactic Bulge AGB star measured from CRIRES spectra

, 2008
We present measurements of the fluorine abundance in a Galactic Bulge Asymptotic Giant Branch (AGB) star. The measurements were performed using high resolution K-band spectra obtained with the CRIRES spectrograph, which has been recently installed at ESO'
A. Smette, B. Aringer, Fluks M. A., Forestini M., Grevesse N., H. U. Käufl, Jorissen A., Lebzelter T., Meynet G., R. Siebenmorgen, S. Uttenthaler, T. Lebzelter, Uttenthaler S., Uttenthaler S., Webb D. U.   +14 more
core   +1 more source

How cinchona alkaloid-derived primary amines control asymmetric electrophilic fluorination of cyclic ketones. [PDF]

, 2014
The origin of selectivity in the α-fluorination of cyclic ketones catalyzed by cinchona alkaloid-derived primary amines is determined with density functional calculations.
Houk, KN, Lam, Yu-hong
core   +2 more sources

Crossover Effects of Transition‐Metal Ions on Lithium‐Metal Anode in Localized High Concentration Electrolytes

Advanced Functional Materials, EarlyView.
This study highlights the impact of transition‐metal (TM) ions (Ni2⁺, Mn2⁺, Co2⁺) on the performance of lithium‐metal anode in localized high‐concentration electrolytes. Mn2⁺ and Co2⁺ destabilize SEI and CEI layers, causing capacity fade and overpotential, while Ni2⁺ shows minimal effects. These findings underscore the need for electrolyte optimization
Zezhou Guo, Zehao Cui, Arumugam Manthiram   +2 more
wiley   +1 more source

Synthesis of PTFE@PFAC core-shell composite particle as a highly efficient anti-dripping agent for PC

Chemical Engineering Journal Advances
Polycarbonate (PC) is kind of engineering plastics which is widely used in the fields such as automotive manufacturing and building materials due to its excellent transparency, high strength and good reprocessing ability.
Hang Wang, Wenwen Fan, Yifan Hu, Ruohan Zhang, Wen Yang, Haoyu Guo, Lan Lei, Chunjie Xie, Hui Li   +8 more
doaj   +1 more source

In-situ growth of superconducting NdFeAs(O,F) thin films by Molecular Beam Epitaxy [PDF]

, 2010
The recently discovered high temperature superconductor F-doped LaFeAsO and related compounds represent a new class of superconductors with the highest transition temperature (Tc) apart from the cuprates.
38947, 38948, 38949, 38950, 38951, 38952, 38953, 38954, Ikuta, H., Kawaguchi, T., Ohno, T., Tabuchi, M., Takeda, Y., Takenaka, K., Uemura, H., Ujihara, T.   +15 more
core   +3 more sources