Conjugated Polymer Energy Level Shifts in Lithium-Ion Battery Electrolytes
Citations Over TimeTop 11% of 2014 papers
Abstract
The ionization potentials (IPs) and electron affinities (EAs) of widely used conjugated polymers are evaluated by cyclic voltammetry (CV) in conventional electrochemical and lithium-ion battery media, and also by ultraviolet photoelectron spectroscopy (UPS) in vacuo. By comparing the data obtained in the different systems, it is found that the IPs of the conjugated polymer films determined by conventional CV (IPC) can be correlated with UPS-measured HOMO energy levels (EH,UPS) by the relationship EH,UPS = (1.14 ± 0.23) × qIPC + (4.62 ± 0.10) eV, where q is the electron charge. It is also found that the EAs of the conjugated polymer films measured via CV in conventional (EAC) and Li(+) battery (EAB) media can be linearly correlated by the relationship EAB = (1.07 ± 0.13) × EAC + (2.84 ± 0.22) V. The slopes and intercepts of these equations can be correlated with the dielectric constants of the polymer film environments and the redox potentials of the reference electrodes, as modified by the surrounding electrolyte, respectively.
Related Papers
- → Calculation of negative electron affinity and aqueous anion hardness using Kohn–Sham HOMO and LUMO energies(2006)119 cited
- → Ionization potentials and electron affinities of carbo- and heterocyclic?-conjugated molecules(1968)68 cited
- → Evolution of the electronic structure and properties of charged titanium doped aluminum nanoclusters(2013)5 cited
- → The ionization potential and electron affinity of PF and PF2(1999)6 cited
- Theoretical Study of Ionization Potential and Electron Affinity of Formyhalide(2010)