Improved electrochemical performance of NaAlO2-coated LiCoO2 for lithium-ion batteries

Coral-like directional porosity lithium ion battery cathodes by ice templating

“…The combined electrode/electrolyte interfacial resistance and charge transfer resistance of the electrode R CT was estimated from the diameter of the more easily resolved semi-circle at medium-high frequency as 30, 61 and 77 Ω for the DIT, SC and IIT electrodes, respectively. The lower R CT and the higher gradient of the Nyquist tail at the lowest frequencies for the DIT electrode confirmed faster lithium ion diffusion along the aligned porosity structure [56,57], consistent with the lower measured directional pore tortuosity.…”

Ab initioinvestigation of the stability of electrolyte/electrode interfaces in all-solid-state Na batteries

“…38 NaAlO 2 is a side product in b-alumina mixtures and has been used as a cathode coating material on LiCoO 2 . 39 To our knowledge, no data on the ionic conductivity and stability window of the Na-rich aluminates have been reported yet.…”

Low-tortuosity and graded lithium ion battery cathodes by ice templating

“…efficient electron transfer up and down the aligned struts. The diameter of the semi-circle of the Nyquist plot indicates the combined charge transfer resistance of the electrode and electrode/electrolyte interfacial resistance R CT , 59 and was estimated to be 21, 32, 40 and 63 U cm 2 for the DIT (LP-S), DIT (LP-CC), SC and IIT electrodes, respectively. The lowest R CT and the highest gradient of the Nyquist tail for the DIT (LP-S) electrode conrmed faster effective Li ion mobility throughout the electrode.…”