Characterization of a thin, uniform coating on P2-type Na2/3Fe1/2Mn1/2O2 cathode material for sodium-ion batteries

RSC Advances ◽  
2015 ◽  
Vol 5 (9) ◽  
pp. 6340-6344 ◽  
Author(s):  
Kwangjin Park ◽  
Dongwook Han ◽  
JeongKuk Shon ◽  
Seok Gwang Doo ◽  
Seoksoo Lee

A thin, uniform carbon coating on Na2/3Fe1/2Mn1/2O2 (NFMO) using 2,3-dihydroxynaphthalene (DN) was prepared.

RSC Advances ◽  
2014 ◽  
Vol 4 (43) ◽  
pp. 22798-22802 ◽  
Author(s):  
Kwangjin Park ◽  
Dongwook Han ◽  
Hyunjin Kim ◽  
Won-seok Chang ◽  
Byungjin Choi ◽  
...  

A chelating-agent-assisted Na2/3Fe1/2Mn1/2O2 material showed enhanced electrochemical performance due to the formation of a thin and stable solid-electrolyte interface layer.


Batteries ◽  
2021 ◽  
Vol 7 (1) ◽  
pp. 16
Author(s):  
Ijaz Ul Mohsin ◽  
Carlos Ziebert ◽  
Magnus Rohde ◽  
Hans Jürgen Seifert

Over the last decade, the demand for safer batteries with excellent performance and lower costs has been intensively increasing. The abundantly available precursors and environmental friendliness are generating more and more interest in sodium ion batteries (SIBs), especially because of the lower material costs compared to Li-ion batteries. Therefore, significant efforts are being dedicated to investigating new cathode materials for SIBs. Since the thermal characterization of cathode materials is one of the key factors for designing safe batteries, the thermophysical properties of a commercial layered P2 type structure Na0.53MnO2 cathode material in powder form were measured in the temperature range between −20 and 1200 °C by differential scanning calorimetry (DSC), laser flash analysis (LFA), and thermogravimetry (TG). The thermogravimetry (TG) was combined with mass spectrometry (MS) to study the thermal decomposition of the cathode material with respect to the evolved gas analysis (EGA) and was performed from room temperature up to 1200 °C. The specific heat (Cp) and the thermal diffusivity (α) were measured up to 400 °C because beyond this temperature, the cathode material starts to decompose. The thermal conductivity (λ) as a function of temperature was calculated from the thermal diffusivity, the specific heat capacity, and the density. Such thermophysical data are highly relevant and important for thermal simulation studies, thermal management, and the mitigation of thermal runaway.


Author(s):  
Liying Shen ◽  
Yong Li ◽  
Swagata Roy ◽  
Xiuping Yin ◽  
Wenbo Liu ◽  
...  

2014 ◽  
Vol 247 ◽  
pp. 770-777 ◽  
Author(s):  
Yao Lu ◽  
Shu Zhang ◽  
Ying Li ◽  
Leigang Xue ◽  
Guanjie Xu ◽  
...  

2014 ◽  
Vol 266 ◽  
pp. 275-281 ◽  
Author(s):  
Siham Doubaji ◽  
Mario Valvo ◽  
Ismael Saadoune ◽  
Mohammed Dahbi ◽  
Kristina Edström

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