In Situ Encapsulating α-MnS into N,S-Codoped Nanotube-Like Carbon as Advanced Anode Material: α → β Phase Transition Promoted Cycling Stability and Superior Li/Na-Storage Performance in Half/Full Cells

2018 ◽  
Vol 30 (21) ◽  
pp. 1706317 ◽  
Author(s):  
Dai-Huo Liu ◽  
Wen-Hao Li ◽  
Yan-Ping Zheng ◽  
Zheng Cui ◽  
Xin Yan ◽  
...  
Keyword(s):  
Phase Transition ◽  
Anode Material ◽  
Cycling Stability ◽  
Storage Performance ◽  
Β Phase

scholarly journals Kinetics of deuteration of the Pd0.772Ag0.228 alloy with α/β phase transition by in-situ neutron diffraction

2019 ◽  
Vol 790 ◽  
pp. 502-508 ◽  
Author(s):  
Michele Catti ◽  
Oscar Fabelo ◽  
Alessandra Filabozzi ◽  
Antonino Pietropaolo ◽  
Alessia Santucci ◽  
...  
Keyword(s):  
Phase Transition ◽  
Neutron Diffraction ◽  
Β Phase ◽  
In Situ Neutron Diffraction ◽  
Kinetics Of

In-Situ Time-of-Flight Neutron Diffraction Study of High-Temperature α-to-β Phase Transition in Elemental Scandium

2008 ◽  
Vol 39 (12) ◽  
pp. 2815-2819 ◽  
Author(s):  
Daniel R. Kammler ◽  
Mark A. Rodriguez ◽  
Ralph G. Tissot ◽  
Donald W. Brown ◽  
Bjørn Clausen ◽  
...  
Keyword(s):  
Phase Transition ◽  
High Temperature ◽  
Neutron Diffraction ◽  
Diffraction Study ◽  
Time Of Flight ◽  
Neutron Diffraction Study ◽  
Β Phase

scholarly journals In situ investigations of the phase change behaviour of tungsten oxide nanostructures

2018 ◽  
Vol 5 (4) ◽  
pp. 171932 ◽  
Author(s):  
Kunyapat Thummavichai ◽  
Nannan Wang ◽  
Fang Xu ◽  
Graham Rance ◽  
Yongda Xia ◽  
...  
Keyword(s):  
Phase Transition ◽  
Phase Change ◽  
Tungsten Oxide ◽  
Operating Conditions ◽  
X Ray Diffraction ◽  
Β Phase ◽  
Oxide Nanostructures ◽  
Relaxation Temperature ◽  
Transition Behaviour

This study uses two in situ techniques to investigate the geometry and phase change behaviour of bundled ultrathin W 18 O 49 nanowires and WO 3 nanoparticles. The in situ X-ray diffraction (XRD) results have shown that the phase transition of WO 3 nanoparticles occurs in sequence from monoclinic (room temperature) → orthorhombic (350°C) → tetragonal (800°C), akin to bulk WO 3 ; however, W 18 O 49 nanowires remain stable as the monoclinic phase up to 500°C, after which a complete oxidation to WO 3 and transformation to the orthorhombic β-phase at 550°C is observed. The in situ Raman spectroscopy investigations have revealed the Raman peak downshifts as the temperature increases, and have identified the 187.6 cm −1 as the fingerprint band for the phase transition from γ- to β-phase of the WO 3 nanoparticle. Furthermore, WO 3 nanoparticles exhibit the γ- to β-phase conversion at 275°C, which is about 75°C lower than the relaxation temperature of 350°C for the monoclinic γ-W 18 O 49 nanowires. These new fundamental understandings on the phase transition behaviour offer important guidance for the design and development of tungsten oxide-based nanodevices by defining their allowed operating conditions.

In-situ synthesized ZnFe 2 O 4 firmly anchored to the surface of MWCNTs as a long-life anode material with high lithium storage performance

2017 ◽  
Vol 425 ◽  
pp. 978-987 ◽  
Author(s):  
Tianbo Yang ◽  
Wanxi Zhang ◽  
Linlin Li ◽  
Bo Jin ◽  
Enmei Jin ◽  
...  
Keyword(s):  
Anode Material ◽  
Lithium Storage ◽  
Storage Performance ◽  
Long Life

A novel bismuth-based anode material with a stable alloying process by the space confinement of an in situ conversion reaction for a rechargeable magnesium ion battery

2018 ◽  
Vol 54 (14) ◽  
pp. 1714-1717 ◽  
Author(s):  
Wei Wang ◽  
Lin Liu ◽  
Peng-Fei Wang ◽  
Tong-Tong Zuo ◽  
Ya-Xia Yin ◽  
...  
Keyword(s):  
Anode Material ◽  
Magnesium Ion ◽  
Conversion Reaction ◽  
Storage Performance

Due to the space confinement of in situ conversion, the BiOF electrode shows superior magnesium storage performance.

In Situ Texture Analysis Using Hard X-Rays

2005 ◽  
Vol 105 ◽  
pp. 55-60 ◽  
Author(s):  
Heinz Günter Brokmeier ◽  
Sang Bong Yi ◽  
No Jin Park ◽  
Jens Homeyer
Keyword(s):  
Phase Transition ◽  
Strong Influence ◽  
Applied Load ◽  
Photon Flux ◽  
X Rays ◽  
Β Phase ◽  
High Penetration ◽  
Strong Orientation ◽  
Loading Device

Due to the high penetration power, the high photon flux and the excellent brilliance high energetic synchrotron radiations are a phantastic tool particular in fast experimentation. Therefore in-situ measurements under applied load or at various temperatures have been carried out to investigate the texture influence on the deformation of magnesium and aluminium. An upgraded loading device with a power up to 20 kN was installed at the hard wiggler beamline BW5. Magnesium samples with different initial textures show the strong influence on this texture on the activation of different glide systems and on the activation of twins. First experiments to study the phase transition in titanium were performed, which demonstrate the strong orientation correlation between the α- and the β-phase.

Towards a durable high performance anode material for lithium storage: stabilizing N-doped carbon encapsulated FeS nanosheets with amorphous TiO2

2019 ◽  
Vol 7 (27) ◽  
pp. 16541-16552 ◽  
Author(s):  
Xuefang Xie ◽  
Yang Hu ◽  
Guozhao Fang ◽  
Xinxin Cao ◽  
Bo Yin ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Anode Material ◽  
Anode Materials ◽  
High Performance ◽  
Rate Capability ◽  
Lithium Ion ◽  
Cycling Stability ◽  
Lithium Storage ◽  
Amorphous Tio2

In situ formed hierarchical FeS nanosheets supported by a TiO2/C fibrous backbone exhibit higher rate capability and cycling stability as anode materials for lithium ion batteries.

Revealing the Phase-Transition Dynamics and Mechanism in a Spinel Li4Ti5O12 Anode Material through in Situ Electron Microscopy

2020 ◽  
Vol 12 (18) ◽  
pp. 20874-20881 ◽  
Author(s):  
Longfei Wang ◽  
Zhi Zhang ◽  
Yongfa Cheng ◽  
Yanan Zhang ◽  
Weifeng Liu ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Phase Transition ◽  
Anode Material ◽  
Transition Dynamics ◽  
In Situ Electron Microscopy ◽  
Li4ti5o12 Anode

scholarly journals The α–β phase transition in volcanic cristobalite

2014 ◽  
Vol 47 (4) ◽  
pp. 1205-1215 ◽  
Author(s):  
David E. Damby ◽  
Edward W. Llewellin ◽  
Claire J. Horwell ◽  
Ben J. Williamson ◽  
Jens Najorka ◽  
...  
Keyword(s):  
Phase Transition ◽  
Ambient Temperature ◽  
Volcanic Ash ◽  
Phase Identification ◽  
Scanning Calorimetry ◽  
X Ray ◽  
Β Phase ◽  
The Stability ◽  
First Time

Cristobalite is a common mineral in volcanic ash produced from dome-forming eruptions. Assessment of the respiratory hazard posed by volcanic ash requires understanding the nature of the cristobalite it contains. Volcanic cristobalite contains coupled substitutions of Al3+ and Na+ for Si4+; similar co-substitutions in synthetic cristobalite are known to modify the crystal structure, affecting the stability of the α and β forms and the observed transition between them. Here, for the first time, the dynamics and energy changes associated with the α–β phase transition in volcanic cristobalite are investigated using X-ray powder diffraction with simultaneous in situ heating and differential scanning calorimetry. At ambient temperature, volcanic cristobalite exists in the α form and has a larger cell volume than synthetic α-cristobalite; as a result, its diffraction pattern sits between ICDD α- and β-cristobalite library patterns, which could cause ambiguity in phase identification. On heating from ambient temperature, volcanic cristobalite exhibits a lower degree of thermal expansion than synthetic cristobalite, and it also has a lower α–β transition temperature (∼473 K) compared with synthetic cristobalite (upwards of 543 K); these observations are discussed in relation to the presence of Al3+ and Na+ defects. The transition shows a stable and reproducible hysteresis loop with α and β phases coexisting through the transition, suggesting that discrete crystals in the sample have different transition temperatures.

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