LiCoO2 (LCO) was purchased from MTI corporation. The smaller LiCoO2 (sLCO) was synthesized by a standard solid-state method . Li2CO3 and Co3O4 (Alfa, 99.7%) were mixed in a stoichiometric ratio of Li: Co = 1: 1 with 5% weight excess Li2CO3 in a SPEX 8000M Mixer higher energy ball mill with steel container and balls for 30 min. The powder was pressed into pellets and sintered at 1000 °C for 10 hr. The product was ground again and sintered at 900 °C for 10 hr. Na0.67CoO2 was synthesized by a standard solid-state method . Na2O2 (Alfa, 95%) and Co3O4 (Alfa, 99.7%) were transferred in a stoichiometric ratio of Na: Co = 0.68: 1 with 5% weight excess Na2O2 into a stainless-steel container with balls while in an Ar glovebox. The powders were mixed for 30 mins in the high energy ball mill. The powder was formed into pellets in the Ar glovebox and then sintered in air at 535 °C for 16 h. The pellet was moved back into the glovebox after cooling down to 300 °C. Electrodes were prepared by casting a slurry of active material, Super P carbon black (MTI), and polyvinylidene fluoride (PVDF, MTI) with a mass ratio of 8:1:1 in N-methyl-2-pyrrolidone (Sigma-Aldrich). The slurry is made with 1:5 weight ratio of active material:NMP. The electrode slurry was drop casted on a ~ 0.8 cm 2 geometrical surface of a 1 cm x 5 cm rectangular carbon cloth (ELAT-H, Fuel Cell Etc, 406 µm in thickness, 80% porosity) current collector and dried on a hotplate at 100 °C overnight. The mass loading of active material ranged from 0.64-2.40 mg per electrode. The differences of the dense NCO and dilute NCO were the drop casting method. Dense NCO electrodes were prepared by drop casting the slurry using a 1 mL pipette and the dilute NCO electrodes were prepared by drop casting the slurry using a 3 mL pipette. The geometry of the pipette tips is different in diameter and tapering angle, which may play a key role in the slurry deposition.