Structural characterization and electrochemical properties of RF-sputtered nanocrystalline Co3O4 thin-film anode

Co3O4 Nanostructures with Different Morphologies and their Field‐Emission Properties

“…The observed cathodic and anodic peak potentials (redox potentials) are in good agreement with reported CV results on Co 3 O 4 thin films. [25] The preliminary CV results demonstrate that Co 3 O 4 nanowalls could be used as an anode material for lithium-ion batteries. More detailed electrochemical studies on various morphologies of Co 3 O 4 nanostructures, by using galvanostatic discharge-charge cycling, are currently in progress.…”

“…CV is a well-adopted electroanalytical technique to study phase transformations, redox couples during the insertion/deinsertion process, [24] and electrode kinetics. [25,26] Cyclic voltammograms were recorded on the cells with Co 3 O 4 nanowalls in the potential range of 3.0 to 0.2 V and at a scan rate of 0.1 mV s -1 . The CV experiments were carried out at room temperature with Li metal as both the counter and reference electrodes.…”

Beyond Intercalation‐Based Li‐Ion Batteries: The State of the Art and Challenges of Electrode Materials Reacting Through Conversion Reactions

“…The performance has now been evaluated for Co 3 O 4 prepared in powder form using a breadth of synthesis methods such as decomposition of precursors, [88][89][90][91][92][93][94][95][96] solvothermal, [ 97 , 98 ] precipitation, [ 99 , 100 ] growth within hard templates, [ 101 , 102 ] inverse microemulsions, [ 101 , 103 ] high energy mechanical milling (HEMM), [ 101 ] spray pyrolysis, [ 104 ] electrospinning, [ 105 ] citrate-gel [ 106 ] and even through bio-assisted texturation using genetically modifi ed viruses as templates, [ 107 ] or in thin fi lm form made by pulsed laser deposition (PLD), [ 108 ] radio frequency (RF) sputtering, [ 109 ] electrodeposition couples has a theoretical specifi c capacity of 1675 mAh g − 1 of active material and a theoretical specifi c energy 2500 Wh kg − 1 , assuming complete reaction to form Li 2 S, which triggered efforts to utilize it both in non-aqueous [ 160 , 161 ] and polymer [ 162 ] batteries. Unfortunately, what may in practice look like a simple reaction is complicated by the formation of a variety of lithium polysulfi de intermediates, which are partially soluble in the electrolyte, reducing its conductivity, and can eventually shuttle to the negative electrode where they react with lithium and passivate it, all this, among other reasons, [ 163 ] resulting in severe ineffi ciencies.…”

Remote Plasma Atomic Layer Deposition of Co3O4 Thin Films

“…4 ) is the most stable phase in the Co-O system and adopts a spinel-type cubic structure, unlike the high temperature phase CoO, which crystallizes in a cubic rock salt structure. 5 Previously Co 3 O 4 has been deposited by radio frequency magnetron sputtering, 6 sol-gel processing, 7,8 electron beam evaporation, 9 spray pyrolysis, 10 pulsed laser deposition, 11 (metal organic) chemical vapor deposition (CVD), 2,[12][13][14][15][16] and atomic layer deposition (ALD). 5,17,18 All these methods can produce high purity Co 3 O 4 .…”