Simultaneous MgO Coating and Mg Doping of Co-Free Cathode Material for High-Voltage Sodium-Ion Batteries

Based on the density functional theory, we propose a promising cathode material, Na2Fe3(SO4)4, applicable for sodium-ion batteries. The crystal structure, stability, average voltage, and diffusion mechanism are carefully investigated to evaluate the electrochemical properties. The proposed material exhibits a high voltage of 4.0 V during the Na extraction. A small polaron is proved to be formed preferably at the first nearest Fe sites to Na vacancy and simultaneously accompanies the Na vacancy during its migration. Four elementary diffusion processes of the polaron–Na vacancy complexes, namely two parallel and two crossing processes, have been explored. The significant difference of activation energies between parallel and crossing processes suggests the substantial effect of the small polaron migration on the Na vacancy diffusion. We found that the parallel process along the [001] direction has the lowest activation energy of 808 meV, implying that the Na vacancy preferably diffuses in a zigzag pathway along the [001] direction.

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Honeycomb-layer structured Na3Ni2BiO6 as a high voltage and long life cathode material for sodium-ion batteries

Journal of Materials Chemistry A ◽

10.1039/c6ta08661f ◽

2017 ◽

Vol 5 (3) ◽

pp. 1300-1310 ◽

Cited By ~ 34

Author(s):

Deu S. Bhange ◽

Ghulam Ali ◽

Dong-Hyun Kim ◽

Daniel A. Anang ◽

Tae Joo Shin ◽

...

Keyword(s):

Cathode Material ◽

High Voltage ◽

Sodium Ion ◽

Sodium Ion Batteries ◽

Long Life

Layer structured Na3Ni2BiO6 with honeycomb ordering is explored as a new high voltage and long life cathode material for sodium-ion batteries.

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Tailoring the Electrochemical Performance of P2- Na0.45Ni0.22Co0.11Mn0.66O2 as High Voltage Or High Capacity Cathode Material for Sodium-Ion Batteries

ECS Meeting Abstracts ◽

10.1149/ma2013-02/6/364 ◽

2013 ◽

Keyword(s):

Electrochemical Performance ◽

Cathode Material ◽

High Voltage ◽

High Capacity ◽

Sodium Ion ◽

Sodium Ion Batteries

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Predicting electrochemical properties and ionic diffusion in Na2+2xMn2−x(SO4)3: crafting a promising high voltage cathode material

Journal of Materials Chemistry A ◽

10.1039/c5ta08114a ◽

2016 ◽

Vol 4 (2) ◽

pp. 451-457 ◽

Cited By ~ 15

Author(s):

Rafael B. Araujo ◽

M. S. Islam ◽

Sudip Chakraborty ◽

R. Ahuja

Keyword(s):

Cathode Material ◽

Electrochemical Properties ◽

High Voltage ◽

Low Cost ◽

Good Alternative ◽

Sodium Ion ◽

Ionic Diffusion ◽

Sodium Ion Batteries ◽

Cost Of Production

Sodium ion batteries have emerged as a good alternative to lithium based systems due to their low cost of production.

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The Gamma-V2O5 phase: A High Voltage Cathode Material for Sodium-Ion Batteries

ECS Meeting Abstracts ◽

10.1149/ma2016-02/5/650 ◽

2016 ◽

Keyword(s):

Cathode Material ◽

High Voltage ◽

Sodium Ion ◽

Sodium Ion Batteries

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An Al-doped high voltage cathode of Na4Co3(PO4)2P2O7 enabling highly stable 4 V full sodium-ion batteries

Journal of Materials Chemistry A ◽

10.1039/c9ta04450g ◽

2019 ◽

Vol 7 (32) ◽

pp. 18940-18949 ◽

Cited By ~ 5

Author(s):

Xiaohao Liu ◽

Linbin Tang ◽

Zhi Li ◽

Jianhua Zhang ◽

Qunjie Xu ◽

...

Keyword(s):

Cathode Material ◽

High Voltage ◽

Cycling Stability ◽

Sodium Ion ◽

Sodium Ion Batteries ◽

Al Doping ◽

Full Cell ◽

Superior Cycling Stability ◽

High Output

High voltage cathode material of Na4Co3(PO4)2P2O7 is modified firstly by Al doping, and a constructed Al0.15-NCPP//HC full cell shows impressively high output voltages and superior cycling stability for rechargeable sodium-ion batteries.

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