scholarly journals Sodiation mechanism via reversible surface film formation on metal oxides for sodium‐ion batteries

Nano Select ◽  
2021 ◽  
Author(s):  
Engelbert Portenkirchner ◽  
Sebastian Rommel ◽  
Lukas Szabados ◽  
Christoph Griesser ◽  
Daniel Werner ◽  
...  
Keyword(s):  
Metal Oxides ◽  
Film Formation ◽  
Surface Film ◽  
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.

scholarly journals Ni- and/or Mn-based layered transition metal oxides as cathode materials for sodium ion batteries: status, challenges and countermeasures

2019 ◽  
Vol 7 (17) ◽  
pp. 10138-10158 ◽  
Author(s):  
Shenghan Wang ◽  
Chenglin Sun ◽  
Ning Wang ◽  
Qichun Zhang
Keyword(s):  
Energy Storage ◽  
Metal Oxides ◽  
Transition Metal Oxides ◽  
Cathode Materials ◽  
Low Cost ◽  
Sodium Ion ◽  
Modern World ◽  
Sodium Ion Batteries ◽  
Energy Storage Applications ◽  
Layered Transition Metal

Sodium ion batteries (SIBs) have been attracting great interest as alternatives for grid and mobile energy storage applications in the modern world due to the sufficient natural abundance and low cost of sodium resources.

scholarly journals Spinel rGO Wrapped CoV2O4 Nanocomposite as a Novel Anode Material for Sodium-Ion Batteries

Polymers ◽  
2020 ◽  
Vol 12 (3) ◽  
pp. 555
Author(s):  
Rasu Muruganantham ◽  
Jeng-Shin Lu ◽  
Wei-Ren Liu
Keyword(s):  
Graphene Oxide ◽  
Metal Oxides ◽  
Electronic Conductivity ◽  
Rate Capability ◽  
Sodium Ion ◽  
Ex Situ ◽  
Sodium Ion Batteries ◽  
X Ray Diffraction ◽  
Binary Metal Oxides ◽  
High Theoretical Capacity

Binary mixed transition-based metal oxides have some of the most potential as anode materials for rechargeable advanced battery systems due to their high theoretical capacity and tremendous electrochemical performance. Nonetheless, binary metal oxides still endure low electronic conductivity and huge volume expansion during the charge/discharge processes. In this study, we synthesized a reduced graphene oxide (rGO)-wrapped CoV2O4 material as the anode for sodium ion batteries. The X-ray diffraction analyses revealed pure-phased CoV2O4 (CVO) rGO-wrapped CoV2O4 (CVO/rGO) nanoparticles. The capacity retention of the CVO/rGO composite anode demonstrated 81.6% at the current density of 200 mA/g for more than 1000 cycles, which was better than that of the bare one of only 73.5% retention. The as-synthesized CVO/rGO exhibited remarkable cyclic stability and rate capability. The reaction mechanism of the CoV2O4 anode with sodium ions was firstly studied in terms of cyclic voltammetry (CV) and ex situ XRD analyses. These results articulated the manner of utilizing the graphene oxide-coated spinel-based novel anode-CoV2O4 as a potential anode for sodium ion batteries.

Sodium transition metal oxides: the preferred cathode choice for future sodium-ion batteries?

2021 ◽  
Author(s):  
Qiannan Liu ◽  
Zhe Hu ◽  
Weijie Li ◽  
Chao Zou ◽  
Huile Jin ◽  
...  
Keyword(s):  
Transition Metal ◽  
Metal Oxide ◽  
Metal Oxides ◽  
Transition Metal Oxides ◽  
High Capacity ◽  
Transition Metal Oxide ◽  
Sodium Ion ◽  
Redox Activity ◽  
Sodium Ion Batteries ◽  
Oxide Cathodes

This work provides guidance on controlling anionic redox activity and finding novel high-capacity transition metal oxide cathodes for sodium-ion batteries.

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