Suppressing the P2-O2 Phase Transition of Na0.67 Mn0.67 Ni0.33 O2 by Magnesium Substitution for Improved Sodium-Ion Batteries

2016 ◽  
Vol 55 (26) ◽  
pp. 7445-7449 ◽  
Author(s):  
Peng-Fei Wang ◽  
Ya You ◽  
Ya-Xia Yin ◽  
Yue-Sheng Wang ◽  
Li-Jun Wan ◽  
...  
Keyword(s):  
Phase Transition ◽  
Sodium Ion ◽  
Sodium Ion Batteries

Ni-doping induced phase transition and electron evolution in cobalt hexacyanoferrate as a stable cathode for sodium ion batteries

2020 ◽  
Author(s):  
Junjie Quan ◽  
Enze Xu ◽  
Hanwen Zhu ◽  
Yajing Chang ◽  
Yi Zhu ◽  
...  
Keyword(s):  
Phase Transition ◽  
Energy Storage ◽  
Ion Channels ◽  
Three Dimensional ◽  
Sodium Ion ◽  
Energy Storage Materials ◽  
Sodium Ion Batteries ◽  
Ni Doping ◽  
Prussian Blue Analogues ◽  
Cobalt Hexacyanoferrate

Prussian blue analogues are potential competitive energy storage materials due to its diverse metal combinations and wide three-dimensional ion channels. Here, we prepared a new high crystalline monoclinic nickel doped...

In situ TEM and half cell investigation of sodium storage in hexagonal FeSe nanoparticles

2019 ◽  
Vol 55 (39) ◽  
pp. 5611-5614 ◽  
Author(s):  
Kai Wu ◽  
Fei Chen ◽  
Zhongtao Ma ◽  
Bingkun Guo ◽  
Yingchun Lyu ◽  
...  
Keyword(s):  
Phase Transition ◽  
Electrochemical Performance ◽  
Tetragonal Phase ◽  
Sodium Ion ◽  
In Situ Tem ◽  
Sodium Ion Batteries ◽  
Half Cell ◽  
Sodium Storage

A hexagonal FeSe anode for sodium-ion batteries shows desirable electrochemical performance with an irreversible phase transition from the hexagonal to tetragonal phase.

Ti-Substituted NaNi0.5 Mn0.5- x Ti x O2 Cathodes with Reversible O3−P3 Phase Transition for High-Performance Sodium-Ion Batteries

2017 ◽  
Vol 29 (19) ◽  
pp. 1700210 ◽  
Author(s):  
Peng-Fei Wang ◽  
Hu-Rong Yao ◽  
Xin-Yu Liu ◽  
Jie-Nan Zhang ◽  
Lin Gu ◽  
...  
Keyword(s):  
Phase Transition ◽  
High Performance ◽  
Sodium Ion ◽  
Sodium Ion Batteries

scholarly journals Tuning local chemistry of P2 layered-oxide cathode for high energy and long cycles of sodium-ion battery

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Chenchen Wang ◽  
Luojia Liu ◽  
Shuo Zhao ◽  
Yanchen Liu ◽  
Yubo Yang ◽  
...  
Keyword(s):  
Phase Transition ◽  
Transition Metal ◽  
Metal Oxides ◽  
Transition Metal Oxides ◽  
Cathode Materials ◽  
Specific Capacity ◽  
High Energy ◽  
Sodium Ion ◽  
Sodium Ion Batteries ◽  
Two Phase

AbstractLayered transition-metal oxides have attracted intensive interest for cathode materials of sodium-ion batteries. However, they are hindered by the limited capacity and inferior phase transition due to the gliding of transition-metal layers upon Na+ extraction and insertion in the cathode materials. Here, we report that the large-sized K+ is riveted in the prismatic Na+ sites of P2-Na0.612K0.056MnO2 to enable more thermodynamically favorable Na+ vacancies. The Mn-O bonds are reinforced to reduce phase transition during charge and discharge. 0.901 Na+ per formula are reversibly extracted and inserted, in which only the two-phase transition of P2 ↔ P’2 occurs at low voltages. It exhibits the highest specific capacity of 240.5 mAh g−1 and energy density of 654 Wh kg−1 based on the redox of Mn3+/Mn4+, and a capacity retention of 98.2% after 100 cycles. This investigation will shed lights on the tuneable chemical environments of transition-metal oxides for advanced cathode materials and promote the development of sodium-ion batteries.

Suppressed the High-Voltage Phase Transition of P2-Type Oxide Cathode for High-Performance Sodium-Ion Batteries

2019 ◽  
Vol 11 (16) ◽  
pp. 14848-14853 ◽  
Author(s):  
Kezhu Jiang ◽  
Xueping Zhang ◽  
Haoyu Li ◽  
Xiaoyu Zhang ◽  
Ping He ◽  
...  
Keyword(s):  
Phase Transition ◽  
High Voltage ◽  
High Performance ◽  
Sodium Ion ◽  
Sodium Ion Batteries ◽  
Oxide Cathode ◽  
Voltage Phase

Mitigating the P2–O2 phase transition of high-voltage P2-Na2/3[Ni1/3Mn2/3]O2 cathodes by cobalt gradient substitution for high-rate sodium-ion batteries

2019 ◽  
Vol 7 (9) ◽  
pp. 4705-4713 ◽  
Author(s):  
Peiyu Hou ◽  
Feng Li ◽  
Yangyang Wang ◽  
Jiangmei Yin ◽  
Xijin Xu
Keyword(s):  
Phase Transition ◽  
High Voltage ◽  
Sodium Ion ◽  
High Rate ◽  
Sodium Ion Batteries ◽  
Kinetics Of

A nanoscale cobalt gradient substitution is introduced to suppress the P2–O2 phase transition and improve the Na+ kinetics of high-voltage P2-Na2/3[Ni1/3Mn2/3]O2 cathodes for sodium-ion batteries.

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