Journal ArticleDOI
Systematic XPS studies of metal oxides, hydroxides and peroxides
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TLDR
In this article, the results of a systematic XPS study, under high controlled conditions, of different basic oxides of transition metals, alkali and alkaline-earth metals are presented; the XPS data of some hydroxides and peroxides are also reported.Abstract:
The results of a systematic XPS study, under high controlled conditions, of different basic oxides of transition metals, alkali and alkaline-earth metals are presented; the XPS data of some hydroxides and peroxides are also reported. Variations of the O 1s binding energies are analysed and one point of interest is the large
binding energy scale obtained for O 1s peaks all associated with a ‘‘2−
’’ formal charge. Through extended
Huckel theory-tight binding (EHT-TB) calculations, attempts are made to rationalize the observed variations.
The results illustrate
the significant
differences
between real
charges on oxygen atoms in transition metal and alkaline-earth oxides.read more
Citations
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Journal ArticleDOI
Reversible anionic redox chemistry in high-capacity layered-oxide electrodes
Mariyappan Sathiya,Gwenaëlle Rousse,Kannadka Ramesha,C.P. Laisa,Hervé Vezin,Moulay Tahar Sougrati,Moulay Tahar Sougrati,Marie-Liesse Doublet,Dominique Foix,Danielle Gonbeau,Danielle Gonbeau,Wesley Walker,Annigere S. Prakash,M. Ben Hassine,M. Ben Hassine,Loic Dupont,Loic Dupont,Jean-Marie Tarascon,Jean-Marie Tarascon +18 more
TL;DR: In this article, the reactivity of a class of high-capacity oxides with a single redox cation has been investigated and it has been shown that these oxides exhibit sustainable reversible capacities as high as 230 mAh/g−1 and good cycling behavior with no signs of voltage decay.
Journal ArticleDOI
Origin of voltage decay in high-capacity layered oxide electrodes
Mariyappan Sathiya,Mariyappan Sathiya,Artem M. Abakumov,Dominique Foix,Dominique Foix,Gwenaëlle Rousse,Gwenaëlle Rousse,Gwenaëlle Rousse,Kannadka Ramesha,Matthieu Saubanère,Matthieu Saubanère,Marie-Liesse Doublet,Marie-Liesse Doublet,Hervé Vezin,Laisa Cp,Prakash As,Prakash As,Danielle Gonbeau,Danielle Gonbeau,VanTendeloo G,Jean-Marie Tarascon,Jean-Marie Tarascon +21 more
TL;DR: The migration of cations between metal layers and Li layers is an intrinsic feature of the charge-discharge process that increases the trapping of metal ions in interstitial tetrahedral sites and provides insights into new chemistry to be explored for developing high-capacity layered electrodes that evade voltage decay.
Journal ArticleDOI
Highly efficient and bending durable perovskite solar cells: toward a wearable power source
Byeong Jo Kim,Dong Hoe Kim,Yoo-Yong Lee,Hee Won Shin,Gill Sang Han,Jung Sug Hong,Khalid Mahmood,Tae Kyu Ahn,Young-Chang Joo,Kug Sun Hong,Nam-Gyu Park,Sangwook Lee,Hyun Suk Jung +12 more
TL;DR: In this article, a flexible perovskite solar cell exhibiting 12.2% power conversion efficiency (PCE) while using a low-temperature technology for the fabrication of a compact charge collection layer is presented.
Journal ArticleDOI
A superior Ce-W-Ti mixed oxide catalyst for the selective catalytic reduction of NOx with NH3
TL;DR: In this article, a superior Ce-W-Ti mixed oxide catalyst prepared by a facile homogeneous precipitation method showed excellent NH3-SCR activity and 100% N2 selectivity with broad operation temperature window and extremely high resistance to space velocity, which is a very promising catalyst for NOx abatement from diesel engine exhaust.
Journal ArticleDOI
Facile Route to an Efficient NiO Supercapacitor with a Three-Dimensional Nanonetwork Morphology
TL;DR: This study indicates that forming a 3D nanonetwork is a straightforward means of improving the electrochemical properties of a supercapacitor.
References
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Journal ArticleDOI
X-ray photoelectron studies on some oxides and hydroxides of cobalt, nickel, and copper
N. S. McIntyre,M. G. Cook +1 more
Journal ArticleDOI
Interpretation of the x-ray photoemission spectra of cobalt oxides and cobalt oxide surfaces
TL;DR: In this article, high-resolution X-ray photoemission of CoO and Co3O4 has been studied and the properties of the Co 2p 3 2, 2p 1 2, and 3s regions, their band shapes and widths, the associated shake-up structure, and the O(1s) and O(2s) BE's were examined.
Journal ArticleDOI
Electronic structure of CoO, Li-doped CoO, and LiCoO2
J. van Elp,J. L. Wieland,Henk Eskes,P. Kuiper,George A. Sawatzky,F. M. F. de Groot,T. S. Turner +6 more
TL;DR: It is found that the CoO band gap is of an intermediate character, between Mott-Hubbard-like and charge-transfer-like, and the first ionization state of CoO is therefore of strongly mixed Co 3d and O 2p character.