Operando X‐Ray and Postmortem Investigations of High‐Voltage Electrochemical Degradation in Single‐Crystal‐LiNiO2–Graphite Cells
Sign Up to like & getrecommendations! Published in 2025 at "Advanced Energy Materials"
DOI: 10.1002/aenm.202500597
Abstract: Single‐crystalline LiNiO2 (SC‐LNO), a high‐energy‐density Li‐ion cathode material, suffers from poor long‐term electrochemical performance when cycled above 4.2 V (vs Li+/Li). In this study, this degradation is evaluated using SC‐LNO–graphite pouch cells electrochemically aged within… read more here.
Keywords: spectroscopy; operando ray; degradation; cathode ... See more keywords
Operando X‐ray Absorption Study of TiO₂‐Supported Au, Cu, and Au–Cu Catalysts for Butadiene Selective Hydrogenation
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DOI: 10.1002/cctc.202500379
Abstract: The selective hydrogenation of unsaturated hydrocarbons is essential for the production of alkenes used in polymerization processes. Au‐based catalysts offer greater selectivity than Pd but are limited by poor hydrogen activation. Alloying Au with Cu… read more here.
Keywords: operando ray; ray absorption; hydrogenation; tio supported ... See more keywords
Understanding the Reaction Mechanism of Lithium–Sulfur Batteries by In Situ/Operando X-ray Absorption Spectroscopy
Sign Up to like & getrecommendations! Published in 2019 at "Arabian Journal for Science and Engineering"
DOI: 10.1007/s13369-019-03808-8
Abstract: Because of the high theoretical energy density of $$2600\, \hbox {Wh kg}^{-1}$$2600Whkg-1, lithium–sulfur (Li–S) batteries are regarded as one of the most promising energy storage technologies to meet the increasing requirement from personal devices to… read more here.
Keywords: lithium sulfur; operando ray; spectroscopy; situ operando ... See more keywords
Operando X-ray diffraction during battery cycling at elevated temperatures: A quantitative analysis of lithium-graphite intercalation compounds
Sign Up to like & getrecommendations! Published in 2017 at "Carbon"
DOI: 10.1016/j.carbon.2017.02.002
Abstract: Abstract The application of in situ or operando characterization techniques is highly important to gain a deeper understanding of the electrochemical and degradation processes that occur during battery cycling. This work presents the first results… read more here.
Keywords: operando ray; ray diffraction; battery cycling; cycling ... See more keywords
Operando X-ray absorption spectroscopy of WO3 photoanodes
Sign Up to like & getrecommendations! Published in 2019 at "Electrochimica Acta"
DOI: 10.1016/j.electacta.2019.134561
Abstract: Abstract In this work we demonstrate the feasibility of hard X-rays operando XAS in photoelectrochemistry. WO3, one of the most studied photoanodes for water splitting and for environmental remediation, is here studied at the W… read more here.
Keywords: operando ray; absorption spectroscopy; spectroscopy; spectroscopy wo3 ... See more keywords
VIV Disproportionation Upon Sodium Extraction From Na3V2(PO4)2F3 Observed by Operando X-ray Absorption Spectroscopy and Solid-State NMR
Sign Up to like & getrecommendations! Published in 2017 at "Journal of Physical Chemistry C"
DOI: 10.1021/acs.jpcc.6b11413
Abstract: Among the series of polyanionic positive electrodes for sodium-ion batteries having the general formula Na3V2(PO4)2F3–yOy (0 ≤ y ≤ 2), the composition Na3V2(PO4)2F3 (y = 0) has the highest theoretical energy that offers competitive electrochemical… read more here.
Keywords: operando ray; ray absorption; po4 2f3; na3v2 po4 ... See more keywords
Operando X-ray Absorption Spectroscopy (XAS) Observation of Photoinduced Oxidation in FeNi (Oxy)hydroxide Overlayers on Hematite (α-Fe2O3) Photoanodes for Solar Water Splitting
Sign Up to like & getrecommendations! Published in 2020 at "Langmuir"
DOI: 10.1021/acs.langmuir.0c02065
Abstract: An FeNi (oxy)hydroxide cocatalyst overlayer was photoelectrochemically deposited on a thin-film hematite (α-Fe2O3) photoanode, leading to a cathodic shift of ∼100 mV in the photocurrent onset potential. Operando X-ray absorption spectroscopy (XAS) at the Fe… read more here.
Keywords: operando ray; oxidation; feni oxy; hematite fe2o3 ... See more keywords
Visualization of Sodium Metal Anodes via Operando X-Ray and Optical Microscopy: Controlling the Morphological Evolution of Sodium Metal Plating.
Sign Up to like & getrecommendations! Published in 2022 at "ACS applied materials & interfaces"
DOI: 10.1021/acsami.1c24673
Abstract: Because of the abundance and cost effectiveness of sodium, rechargeable sodium metal batteries have been widely studied to replace current lithium-ion batteries. However, there are some critical unresolved issues including the high reactivity of sodium,… read more here.
Keywords: microscopy; sodium; operando ray; metal ... See more keywords
Direct observation of lithium polysulfides in lithium–sulfur batteries using operando X-ray diffraction
Sign Up to like & getrecommendations! Published in 2017 at "Nature Energy"
DOI: 10.1038/nenergy.2017.69
Abstract: In the on going quest towards lithium-battery chemistries beyond the lithium-ion technology, the lithium–sulfur system is emerging as one of the most promising candidates. The major outstanding challenge on the route to commercialization is controlling… read more here.
Keywords: operando ray; ray diffraction; sulfur batteries; lithium sulfur ... See more keywords
Operando X-ray absorption spectroscopic investigation of electrocatalysts state in anion exchange membrane fuel cells
Sign Up to like & getrecommendations! Published in 2025 at "Nature Communications"
DOI: 10.1038/s41467-025-57177-y
Abstract: Capturing the active state of (electro)catalysts under operating conditions, namely operando, is the ultimate objective of (electro)catalyst characterization, enabling the unraveling of reaction mechanisms and advancing (electro)catalyst development. Operando insights advance our understanding of the… read more here.
Keywords: absorption spectroscopic; state; operando ray; ray absorption ... See more keywords
Mechanical deformations in battery current collectors observed by operando X-ray diffraction on Si/graphite anodes.
Sign Up to like & getrecommendations! Published in 2025 at "Chemical communications"
DOI: 10.1039/d5cc04995d
Abstract: Current collectors in Li-ion batteries are often considered passive components with minimal influence on performance. However, materials with large expansion during lithiation may influence the current collector. Herein, we demonstrate mechanical deformations of the Cu… read more here.
Keywords: operando ray; current collectors; mechanical deformations; graphite ... See more keywords