Sodium-ion diffusion mechanisms in the low cost high voltage cathode material Na2+δFe2−δ/2(SO4)3

2015 ◽  
Vol 17 (14) ◽  
pp. 9186-9193 ◽  
Author(s):  
L. L. Wong ◽  
H. M. Chen ◽  
S. Adams
Keyword(s):  
Cathode Material ◽  
High Voltage ◽  
Low Cost ◽  
Sodium Ion ◽  
Ion Diffusion ◽  
Ion Migration ◽  
Site Energy ◽  
Energy Modelling ◽  
Diffusion Mechanisms

Bond-valence site energy modelling, molecular dynamics and DFT simulations jointly clarify Na+-ion migration in Na2+δFe2−δ/2(SO4)3, a promising high voltage cathode material for sodium-ion batteries, and the role of Fe2+ vacancies therein.

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

2016 ◽  
Vol 4 (2) ◽  
pp. 451-457 ◽  
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.

A nanoarchitectured Na6Fe5(SO4)8/CNTs cathode for building a low-cost 3.6 V sodium-ion full battery with superior sodium storage

2019 ◽  
Vol 7 (24) ◽  
pp. 14656-14669 ◽  
Author(s):  
Shiyu Li ◽  
Xiaosheng Song ◽  
Xiaoxiao Kuai ◽  
Wenchang Zhu ◽  
Kai Tian ◽  
...  
Keyword(s):  
Energy Density ◽  
Cathode Material ◽  
High Voltage ◽  
Low Cost ◽  
Sodium Ion ◽  
Sodium Ion Batteries ◽  
Hard Carbon ◽  
Excellent Cycling Stability ◽  
First Time ◽  
Sodium Storage

A novel high-voltage cathode material Na6Fe5(SO4)8 (NFS) is successfully prepared for sodium-ion batteries for the first time. It is found that the NFS cathode shows a high working voltage of 3.7 V, together with an attractive energy density approaching 450 W h kg−1. And, based on an NFS@5%CNTs cathode and hard carbon (HC) anode, a full NFS@5%CNTs//HC cell can deliver an impressive energy density approaching 350 W h kg−1 and excellent cycling stability over 1000 cycles at 2C.

scholarly journals Electronic structure, ion diffusion and cation doping in the Na4VO(PO4)2 compound as a cathode material for Na-ion batteries

2020 ◽  
Vol 22 (12) ◽  
pp. 6653-6659 ◽  
Author(s):  
Pablo A. Aparicio ◽  
Nora H. de Leeuw
Keyword(s):  
Electronic Structure ◽  
Cathode Material ◽  
Lithium Ion Batteries ◽  
Low Cost ◽  
Lithium Ion ◽  
Sodium Ion ◽  
Sodium Ion Batteries ◽  
Ion Diffusion ◽  
Cation Doping

Sodium-ion batteries are considered one of the most promising alternatives to lithium-ion batteries owing to the low cost and wide abundance of sodium.

scholarly journals Na2Fe3(SO4)4 as a new high-voltage potential cathode material for sodium-ion batteries

2021 ◽  
Vol 130 (1B) ◽  
pp. 59-67
Author(s):  
Thien Lan Tran ◽  
Huu Duc Luong ◽  
Trong Lam Pham ◽  
Viet Bac Phung ◽  
Van An Dinh
Keyword(s):  
Cathode Material ◽  
High Voltage ◽  
Density Functional ◽  
Diffusion Processes ◽  
Small Polaron ◽  
Diffusion Mechanism ◽  
Sodium Ion ◽  
Structure Stability ◽  
Sodium Ion Batteries ◽  
Significant Difference

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.

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

2017 ◽  
Vol 5 (3) ◽  
pp. 1300-1310 ◽  
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.

scholarly journals Na2Fe(SO4)2: an anhydrous 3.6 V, low-cost and good-safety cathode for a rechargeable sodium-ion battery

2019 ◽  
Vol 7 (21) ◽  
pp. 13197-13204 ◽  
Author(s):  
Wenli Pan ◽  
Wenhao Guan ◽  
Shuangyu Liu ◽  
Ben Bin Xu ◽  
Chu Liang ◽  
...  
Keyword(s):  
Thermal Stability ◽  
High Voltage ◽  
Low Cost ◽  
High Thermal Stability ◽  
Sodium Ion ◽  
Moisture Resistance ◽  
Sodium Ion Battery ◽  
Sodium Ion Batteries ◽  
Earth Abundant

A new high-voltage earth-abundant cathode for sodium-ion batteries, Na2Fe(SO4)2, is reported, combining high thermal stability and good moisture resistance.

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