Nanowire architectured porous bimetallic transition metal oxides for high performance hybrid supercapacitor applications

2021 ◽  
Author(s):  
Periyasamy Sivakumar ◽  
Min Gyu Jung ◽  
Chellan Justin Raj ◽  
JeongWon Park ◽  
Ho Seok Park ◽  
...  
Keyword(s):  
Transition Metal ◽  
Metal Oxides ◽  
Transition Metal Oxides ◽  
High Performance ◽  
Hybrid Supercapacitor ◽  
Supercapacitor Applications

scholarly journals A universal electrochemical lithiation–delithiation method to prepare low-crystalline metal oxides for high-performance hybrid supercapacitors

RSC Advances ◽  
2021 ◽  
Vol 11 (48) ◽  
pp. 30407-30414
Author(s):  
Zhuo-Dong Wu ◽  
De-Jian Chen ◽  
Long Li ◽  
Li-Na Wang
Keyword(s):  
Transition Metal ◽  
Electrochemical Performance ◽  
Metal Oxides ◽  
Transition Metal Oxides ◽  
High Performance ◽  
Hybrid Supercapacitors ◽  
Electrochemical Lithiation ◽  
Low Crystalline ◽  
Crystalline Metal

The electrochemical performance of transition metal oxides (TMOs) for hybrid supercapacitors has been optimized through various methods in previous reports.

Fabrication of double-shell hollow NiO@N-C nanotubes for a high-performance supercapacitor

2019 ◽  
Vol 43 (34) ◽  
pp. 13457-13462 ◽  
Author(s):  
Lulu Zhang ◽  
Xiumei Song ◽  
Lichao Tan ◽  
Huiyuan Ma ◽  
Dongxuan Guo ◽  
...  
Keyword(s):  
Transition Metal ◽  
Metal Oxides ◽  
Transition Metal Oxides ◽  
High Performance ◽  
C Nanotubes ◽  
Carbon Based

Rational fabrication of carbon-based materials hybridized with transition-metal oxides is crucial for the design of supercapacitor electrodes with superior properties.

scholarly journals Can Doping of Transition Metal Oxide Cathode Materials Increase Achievable Voltages with Multivalent Metals?

2019 ◽  
Author(s):  
Daniel Koch ◽  
Sergei Manzhos
Keyword(s):  
Titanium Dioxide ◽  
Transition Metal ◽  
Metal Oxides ◽  
Transition Metal Oxides ◽  
High Performance ◽  
Molybdenum Trioxide ◽  
Type Systems ◽  
Hole Doping ◽  
Earth Abundant ◽  
Valence Bands

We investigate from first principles the use of substitutional p-doping as a means to enhance the insertion energies of multivalent metals in transition metal oxides, and therefore the resulting voltages in an electrochemical cell, due to bandstructure modulation. Multivalent and earth-abundant metals such as magnesium or aluminium are attractive candidates to replace lithium in future high-performance secondary batteries with intercalation-type electrodes. Unfortunately, the achievable voltages obtained with this kind of elements still remain uncompetitively low. We study and compare the changes in insertion energetics (voltages) of single- and multivalent metals in semiconducting and insulating transition metal oxides upon substitutional p-doping with different metals, introducing different numbers of hole states. We use a single vanadium pentoxide monolayer as model system to study the effect of p-doping on achievable voltages and deduce general trends for transition metal oxides. Our investigations reveal the formation of n-hole polarons (with n>1) in form of oxygen dimers in p-doped vanadia caused by localized <i>p</i> holes on oxide ions in agreement with previous findings. We find that the oxygen dimer formation has an adverse effect on adsorption energetics compared to the single-hole case without dimerization. We find an analogous oxygen dimerization in other TMOs with oxygen-dominated valence bands like molybdenum trioxide and titanium dioxide, while strained systems like trigonal nickel- or titanium dioxide, or Mott-type systems like monoclinic vanadium dioxide with qualitatively different valence band composition do not exhibit oxygen dimerization with multi-hole doping. Our results demonstrate the advantages and limitations of TMO electrode p-doping and show a path to possible strategies to overcome detrimental effects.

scholarly journals Transition metal oxides for high performance sodium ion battery anodes

Nano Energy ◽  
2014 ◽  
Vol 5 ◽  
pp. 60-66 ◽  
Author(s):  
Yinzhu Jiang ◽  
Meijuan Hu ◽  
Dan Zhang ◽  
Tianzhi Yuan ◽  
Wenping Sun ◽  
...  
Keyword(s):  
Transition Metal ◽  
Metal Oxides ◽  
Transition Metal Oxides ◽  
High Performance ◽  
Sodium Ion ◽  
Sodium Ion Battery

Hierarchical bilayered hybrid nanostructural arrays of NiCo2O4 micro-urchins and nanowires as a free-standing electrode with high loading for high-performance lithium-ion batteries

Nanoscale ◽  
2017 ◽  
Vol 9 (39) ◽  
pp. 14979-14989 ◽  
Author(s):  
Yu Wang ◽  
Pengcheng Liu ◽  
Kongjun Zhu ◽  
Jing Wang ◽  
Jinsong Liu
Keyword(s):  
Transition Metal ◽  
Metal Oxides ◽  
Lithium Ion Batteries ◽  
Transition Metal Oxides ◽  
High Performance ◽  
Lithium Ion ◽  
High Loading ◽  
Free Standing ◽  
Significant Research

Fabrication of free-standing binary transition metal oxides, especially NiCo2O4, has attracted significant research interests since these metal oxides are promising candidates for free-standing anodes of lithium-ion batteries (LIBs).

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