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Updated: Sep 9, 2025

In Situ Neutron Powder Diffraction Using Custom-made Lithium-ion Batteries
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In Situ Neutron Powder Diffraction Using Custom-made Lithium-ion Batteries

Published on: November 10, 2014

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超高速充電式リチウムおよびマグネシウム電池の歪んだ結合式梯子の長さの"スイートスポット"

Wenrui Lei1, Kelsey Harrison1, Si Tong Bao1

  • 1Department of Chemistry, Columbia University New York NY 10027 USA cn37@columbia.edu qj2175@columbia.edu.

Chemical science
|September 2, 2025
PubMed
まとめ

研究者らはバッテリーの高速充電/放電のための調整可能なポリマーを開発しました. 中間の長さの螺旋ペリレン二酸化物 (hPDI) ポリマーは,リチウムとマグネシウムイオンの両方のエネルギー貯蔵に優れた安定性と性能を提供します.

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An ionic compound is stable because of the electrostatic attraction between its positive and negative ions. The lattice energy of a compound is a measure of the strength of this attraction. The lattice energy (ΔHlattice) of an ionic compound is defined as the energy required to separate one mole of the solid into its component gaseous ions. For the ionic solid sodium chloride, the lattice energy is the enthalpy change of the process:
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Ladder diagrams are useful for evaluating equilibria involving metal-ligand complexes. The vertical scale of the ladder diagram represents the concentration of unreacted or free ligand, pL. The horizontal lines on the scale depict the log of stepwise formation constants for metal-ligand complexes and indicate the dominant species in all the regions.
The formation constant, K1, for the formation of Cd(NH3)2+ complex from cadmium and ammonia is 3.55 × 102. Log K1 (i.e. pNH3) is 2.55, and...
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Ladder diagrams are useful tools for understanding redox equilibrium reactions, especially the effects of concentration changes on the electrochemical potential of the reaction. The vertical axis in the redox ladder diagrams represents the electrochemical potential, E. The area of predominance is demarcated using the Nernst equation.
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