Ammonia decomposition using N labelled ammonia was performed over a lithium imide catalyst with mass spectrometry. The results show that all the nitrogen is released from the bulk of the lithium imide catalyst during the ammonia decomposition reaction, but that the decomposition itself occurs at the catalyst surface; they also indicate that lithium imide decomposes ammonia and does not merely act as a promoter to transition metal catalysts.
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http://dx.doi.org/10.1039/c6cp07734j | DOI Listing |
Macromol Rapid Commun
January 2025
Institut für Chemie, Technische Universität Chemnitz, Straße der Nationen 62, 09111, Chemnitz, Germany.
Aromatic diimides such as naphthalene diimide (NDI) and pyromellitic diimide (MDI) are important building blocks for organic electrode materials. They feature a two-electron redox mechanism that allows for energy storage. Due to the smaller size of MDI compared to NDI its theoretical capacity is higher.
View Article and Find Full Text PDFDes Monomers Polym
January 2025
Leibniz-Institut für Polymerforschung Dresden e.V, Dresden, Germany.
Enhancing both ionic conductivity and mechanical robustness remains a major challenge in designing solid-state electrolytes for lithium batteries. This work presents a novel approach in designing mechanically robust and highly conductive solid-state electrolytes, which involves ionic liquid-based cross-linked polymer networks incorporating polymeric ionic liquids (PILs). First, linear PILs with different side groups were synthesized for optimizing the structure.
View Article and Find Full Text PDFAcc Chem Res
January 2025
Center for Molecular Spectroscopy and Dynamics, Institute for Basic Science, Seoul 02841, Korea.
ConspectusWater-in-salt electrolytes (WiSEs) are promising electrolytes for next-generation lithium-ion batteries (LIBs), offering critical advantages like nonflammability and improved safety. These electrolytes have extremely high salt concentrations and exhibit unique solvation structures and transport mechanisms dominated by the formation of ion networks and aggregates. These ion networks are central to the performance of WiSEs, govern the transport properties and stability of the electrolyte, deviating from conventional dilute aqueous or organic electrolytes.
View Article and Find Full Text PDFJ Colloid Interface Sci
December 2024
Key Laboratory of New Energy Development and Energy Storage Technology of Handan, College of Materials Science and Engineering, Hebei University of Engineering, Handan 056038, People's Republic of China.
Herein, a novel composite solid-state polymer electrolytes (CSEs) was regulated by introducing CoNi-MOF (Metal-organic framework) @NiPc (Nickel phthalocyanine) nanofiller (CMN) into PEO (polyethylene oxide) matrix. In this novel system, the NiPc uniformly wrapped around the surface of MOF through hydrogen bond bridging, avoiding the agglomeration of the MOF particles. The chemisorption between Ni in NiPc and the O atoms in the bis(triffuoromethanesulfonyl)imide anion (TFSI) restricted the mobility of the anions within the CSEs, which improved the release of Li ions from the NiPcLi.
View Article and Find Full Text PDFAngew Chem Int Ed Engl
January 2025
Beijing University of Chemical Technology, State Key Laboratory of Organic-Inorganic Composites, 15 North Third Ring Road East, 37830, Beijing, CHINA.
Polymers with strong electron-withdrawing groups (e.g., cyano-containing polymers) are attractive for a wide range of applications due to their high dielectric constant and outstanding electrochemical stability.
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