@article{34332,
  author = {Kyle M Diederichsen and Bryan D McCloskey},
  title = {Electrolyte additives to enable nonaqueous polyelectrolyte solutions for lithium ion batteries},
  abstract = {<p><span>Nonaqueous polyelectrolyte solutions, in which a negatively charged macromolecule neutralized by lithium is dissolved in nonaqueous solvents, have shown promise as potential high transference number electrolytes. However, in battery-relevant carbonate solvents (ethylene carbonate/dimethyl carbonate blends), it has been shown that lithium ions do not readily dissociate from easily synthesized sulfonated polymers, despite the solvent's high dielectric constant (∼50). In this work, a range of additives are screened to improve conductivity, and we demonstrate that the addition of less than 5 vol% of 15-crown-5 achieves an order of magnitude conductivity increase by selectively improving lithium dissociation. Utilizing the optimized electrolyte, we show that polyelectrolyte solutions may be directly substituted for a standard electrolyte with commercial electrodes in a graphite/LiFePO</span><sub><small><span>4</span></small></sub><span>&nbsp;cell, providing further motivation for future study of these new electrolytes.</span></p>},
  year = {2020},
  journal = {Molecular Systems Design & Engineering},
  volume = {5},
  pages = {91 - 96},
  month = {07/2019},
  doi = {10.1039/c9me00067d},
  language = {eng},
}