Enhanced Wear Resistance of Cobalt Oxide Over Nickel Oxide

Roy, Amit; Jalilvand, Vahid; Mohammadkhani, Saeed; Patel, Payank; Dolatabadi, Ali; Roué, Lionel; Guay, Daniel; Chromik, Richard R.; Moreau, Christian; Stoyanov, Pantcho

doi:10.1007/s11249-023-01769-6

Cited by 8 publications

(1 citation statement)

References 55 publications

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“…The Raman shifts present at 185, 482, 512, 548, and 675 cm –1 are characteristic of the Ni–O and Co–O bondings. The clear asymmetry of the Raman peaks infers the occurrence of multiple bonding features . In addition, the Raman spectrum of the rGO was included as shown in (Figure S3b).…”

Section: Results and Discussionmentioning

confidence: 99%

Sea Urchin-Like NiO-CoO Heterostructure as High-Energy Supercapattery Electrode: Laboratory Prototype to Field Application of Pouch-type Device

Kannadasan,

Archana,

Rajaji

et al. 2024

ACS Appl. Electron. Mater.

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Transition metal-oxides are being explored in the energy storage applications nowadays, serving as electrodes because of their desirable redox features. In this study, sea urchin-like nickel oxide-cobalt oxide (NiO-CoO) heterostructure was generated using a hydrothermal method and examined as supercapattery electrode. The crystallinity and morphological features of the synthesized heterostructure were analyzed using various techniques like powder X-ray Diffraction (XRD), scanning electron microscope (SEM), high-resolution-transmission electron microscopy (HR-TEM), and X-ray photoelectron spectroscopy (XPS), etc. The electrochemical activity of the sea urchin-like NiO-CoO heterostructure electrode toward supercapattery was tested in three diverse electrolytes consisting of KOH, NaOH, and LiOH. As a result, the heterostructure electrode exhibited excellent charge-storage features in three electrode configurations in the alkali electrolytes. Hence, the supercapattery practical devices were fabricated both in coin-type and pouch-type devices. The aqueous coin-type supercapattery device demonstrated an exceptionally high specific energy of 340 W h kg −1 with a specific power of 295 W kg −1 , showing an excellent cycling stability over 10,000 cycles, whereas the pouch-type device attained a specific energy of 140 W h kg −1 coupled with a specific power of 320 W kg −1 . Power Law and Dunn's analyses confirmed the simultaneous contribution of the diffusive and the capacitive charge storage kinetics in the NiO-CoO heterostructure electrode. In the non-aqueous system, there seems to be Li + ion intercalation leading to high specific energy at passable specific power. The fabricated coin-type and the pouchtype supercapattery devices were demonstrated in the field applications such as glowing LED and functional stopwatch independently and together.

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Section: Results and Discussionmentioning

confidence: 99%