Degradation Mechanism of O3-Type NaNi1/3Fe1/3Mn1/3O2 Cathode Materials During Ambient Storage and Their In Situ Regeneration

2021 ◽  
Author(s):  
Yang Sun ◽  
Hong Wang ◽  
Dechao Meng ◽  
Xiaoqiao Li ◽  
Xiaozhen Liao ◽  
...  
Keyword(s):  
Cathode Materials ◽  
Degradation Mechanism ◽  
In Situ Regeneration ◽  
Ambient Storage

scholarly journals Rapid mechanochemical synthesis of polyanionic cathode with improved electrochemical performance for Na-ion batteries

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Xing Shen ◽  
Quan Zhou ◽  
Miao Han ◽  
Xingguo Qi ◽  
Bo Li ◽  
...  
Keyword(s):  
Energy Storage ◽  
Electrochemical Performance ◽  
Mechanochemical Synthesis ◽  
Cathode Materials ◽  
Industrial Application ◽  
Synthesis Process ◽  
In Situ Fabrication ◽  
Stationary Energy ◽  
Carbon Coated

AbstractNa-ion batteries have been considered promising candidates for stationary energy storage. However, their wide application is hindered by issues such as high cost and insufficient electrochemical performance, particularly for cathode materials. Here, we report a solvent-free mechanochemical protocol for the in-situ fabrication of sodium vanadium fluorophosphates. Benefiting from the nano-crystallization features and extra Na-storage sites achieved in the synthesis process, the as-prepared carbon-coated Na3(VOPO4)2F nanocomposite exhibits capacity of 142 mAh g−1 at 0.1C, higher than its theoretical capacity (130 mAh g−1). Moreover, a scaled synthesis with 2 kg of product was conducted and 26650-prototype cells were demonstrated to proof the electrochemical performance. We expect our findings to mark an important step in the industrial application of sodium vanadium fluorophosphates for Na-ion batteries.

scholarly journals Degradation Mechanism of Porous Metal-Organic Frameworks by In Situ Atomic Force Microscopy

Nanomaterials ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 722
Author(s):  
Ioanna Christodoulou ◽  
Tom Bourguignon ◽  
Xue Li ◽  
Gilles Patriarche ◽  
Christian Serre ◽  
...  
Keyword(s):  
Drug Delivery ◽  
Degradation Mechanism ◽  
Metal Organic Frameworks ◽  
Porous Metal ◽  
Force Microscopy ◽  
Atomic Force ◽  
Metal Organic ◽  
The Media ◽  
Ph Conditions

In recent years, Metal-Organic Frameworks (MOFs) have attracted a growing interest for biomedical applications. The design of MOFs should take into consideration the subtle balance between stability and biodegradability. However, only few studies have focused on the MOFs’ stability in physiological media and their degradation mechanism. Here, we investigate the degradation of mesoporous iron (III) carboxylate MOFs, which are among the most employed MOFs for drug delivery, by a set of complementary methods. In situ AFM allowed monitoring with nanoscale resolution the morphological, dimensional, and mechanical properties of a series of MOFs in phosphate buffer saline and in real time. Depending on the synthetic route, the external surface presented either well-defined crystalline planes or initial defects, which influenced the degradation mechanism of the particles. Moreover, MOF stability was investigated under different pH conditions, from acidic to neutral. Interestingly, despite pronounced erosion, especially at neutral pH, the dimensions of the crystals were unchanged. It was revealed that the external surfaces of MOF crystals rapidly respond to in situ changes of the composition of the media they are in contact with. These observations are of a crucial importance for the design of nanosized MOFs for drug delivery applications.

scholarly journals Switching between solid solution and two-phase regimes in the Li1-xFe1-yMnyPO4 cathode materials during lithium (de)insertion: combined PITT, in situ XRPD and electron diffraction tomography study

2016 ◽  
Vol 191 ◽  
pp. 149-157 ◽  
Author(s):  
Oleg A. Drozhzhin ◽  
Vasiliy D. Sumanov ◽  
Olesia M. Karakulina ◽  
Artem M. Abakumov ◽  
Joke Hadermann ◽  
...  
Keyword(s):  
Solid Solution ◽  
Electron Diffraction ◽  
Cathode Materials ◽  
Diffraction Tomography ◽  
Two Phase

scholarly journals In situ regeneration of bioactive coatings enabled by an evolved Staphylococcus aureus sortase A

2016 ◽  
Vol 7 (1) ◽  
Author(s):  
Hyun Ok Ham ◽  
Zheng Qu ◽  
Carolyn A. Haller ◽  
Brent M. Dorr ◽  
Erbin Dai ◽  
...  
Keyword(s):  
Staphylococcus Aureus ◽  
Sortase A ◽  
Bioactive Coatings ◽  
In Situ Regeneration

The facile in situ preparation and characterization of C/FeOF/FeF3 nanocomposites as LIB cathode materials

Ionics ◽  
2017 ◽  
Vol 24 (6) ◽  
pp. 1561-1569 ◽  
Author(s):  
Wanwan Li ◽  
Yue Li ◽  
Minhua Fang ◽  
Xiaolin Yao ◽  
Tingting Li ◽  
...  
Keyword(s):  
Cathode Materials ◽  
In Situ Preparation

Biomimetic in situ Regeneration of Cofactors NAD(P)+ and NAD(P)H Models Hantzsch Esters and Dihydrophenanthridine

Synlett ◽  
2012 ◽  
Vol 23 (09) ◽  
pp. 1300-1304 ◽  
Author(s):  
Zhengkun Yu ◽  
Wangming Du
Keyword(s):  
In Situ Regeneration

Surface modification of sewage sludge derived carbonaceous catalyst for m-cresol catalytic wet peroxide oxidation and degradation mechanism

RSC Advances ◽  
2015 ◽  
Vol 5 (52) ◽  
pp. 41867-41876 ◽  
Author(s):  
Yang Yu ◽  
Huangzhao Wei ◽  
Li Yu ◽  
Tong Zhang ◽  
Sen Wang ◽  
...  
Keyword(s):  
Surface Modification ◽  
Sewage Sludge ◽  
Organic Synthesis ◽  
Degradation Mechanism ◽  
Peroxide Oxidation ◽  
Wet Peroxide Oxidation ◽  
Carbonaceous Catalyst ◽  
Catalytic Wet Peroxide Oxidation

Organic synthesis is used to investigate the degradation of m-cresol and the intermediates are identified by in situ NMR.

Knitting a sweater with UV-induced in situ polymerization of poly(pyrrole-co-citral nitrile) on Ni-rich layer oxide cathode materials for lithium ion batteries

2022 ◽  
Vol 520 ◽  
pp. 230768
Author(s):  
Kaiji Lin ◽  
Shaodian Yang ◽  
Zhicong Shi ◽  
Qinglu Fan ◽  
Zhiling Liu ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Cathode Materials ◽  
In Situ Polymerization ◽  
Lithium Ion ◽  
Oxide Cathode
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