Ab Initio Study of the Capacity Loss in Over-Lithiated Oxides Cathode Material for Li-ion Batteries

2016 ◽  
Vol 6 (1) ◽  
Author(s):  
A. Rajkamal ◽  
E. Mathan Kumar ◽  
V. Kathirvel ◽  
Noejung Park ◽  
Ranjit Thapa

2019 ◽  
Vol 33 (15) ◽  
pp. 1950151 ◽  
Author(s):  
Roberts Eglitis

Current commercially available rechargeable Li-ion batteries, for example LiCoO2, are working mostly in the 4 V regime. One often suggested possibility to improve the effectivity of Li-ion batteries are the creation of the 5 V cathode materials. We performed quantum mechanical calculations on the average battery voltage for the Li2Co[Formula: see text]Mn[Formula: see text]O8 (x = 0, 1, 2, 3 and 4) cathode materials by means of the WIEN2k computer program package. The calculated average battery voltages for x = 0, 1, 2, 3 and 4 are equal to 3.95, 5, 4.47, 4.19 and 3.99 V. Our ab initio calculation results are compared with the available experimental data for x = 0, 1, 2 and 4 which are equal to 4, 5, 5 and 4 V. Thereby, for the Li2Co1Mn3O8 battery cathode material, our calculated average battery voltage around 5 V is in perfect agreement with the experimentally available battery voltage value of 5 Volt. Nevertheless, our calculated average battery voltage is underestimated (4.47 V) for the Li2Co2Mn2O8 cathode material, which also experimentally exhibits the 5 V voltage.


2006 ◽  
Vol 8 (5) ◽  
pp. 797-800 ◽  
Author(s):  
P LARSSON ◽  
R AHUJA ◽  
A NYTEN ◽  
J THOMAS

2017 ◽  
Vol 355 ◽  
pp. 154-163 ◽  
Author(s):  
Dong Young Kim ◽  
Hosang Park ◽  
Woon Ih Choi ◽  
Basab Roy ◽  
Jinah Seo ◽  
...  

2019 ◽  
Vol 313 ◽  
pp. 70-78
Author(s):  
Sangkoan Yi ◽  
Janghyuk Moon ◽  
Maenghyo Cho ◽  
Kyeongjae Cho

RSC Advances ◽  
2014 ◽  
Vol 4 (91) ◽  
pp. 50195-50201 ◽  
Author(s):  
Fengmei Yang ◽  
Weiwei Sun ◽  
Yuhan Li ◽  
Haiyan Yuan ◽  
Zhiyong Dong ◽  
...  

The substitution of Co for Fe in Pnma-Li2FePO4F i.e. Li2Fe1−xCoxPO4F (x = 1/8, 2/8, 3/8, 4/8, 5/8, 6/8, 7/8) are stable enough as new cathode materials and with the concentration of Co increases the discharge potential of the materials can increase.


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