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.

Anion and cation substitution in transition-metal oxides nanosheets for high-performance hybrid supercapacitors

Nano Energy ◽  
2019 ◽  
Vol 57 ◽  
pp. 22-33 ◽  
Author(s):  
Jinghua Li ◽  
Zaichun Liu ◽  
Qiaobao Zhang ◽  
Yong Cheng ◽  
Bote Zhao ◽  
...  
Keyword(s):  
Transition Metal ◽  
Metal Oxides ◽  
Transition Metal Oxides ◽  
High Performance ◽  
Cation Substitution ◽  
Hybrid Supercapacitors

scholarly journals Nonstoichiometric Cu0.6Ni0.4Co2O4 Nanowires as an Anode Material for High Performance Lithium Storage

Nanomaterials ◽  
2020 ◽  
Vol 10 (2) ◽  
pp. 191
Author(s):  
Junhao Li ◽  
Ningyi Jiang ◽  
Jinyun Liao ◽  
Yufa Feng ◽  
Quanbing Liu ◽  
...  
Keyword(s):  
Transition Metal ◽  
Electrochemical Performance ◽  
Metal Oxides ◽  
Lithium Ion Batteries ◽  
Transition Metal Oxides ◽  
Anode Materials ◽  
High Performance ◽  
Electronic Conductivity ◽  
Specific Capacity ◽  
Lithium Ion

Transition metal oxide is one of the most promising anode materials for lithium-ion batteries. Generally, the electrochemical property of transition metal oxides can be improved by optimizing their element components and controlling their nano-architecture. Herein, we designed nonstoichiometric Cu0.6Ni0.4Co2O4 nanowires for high performance lithium-ion storage. It is found that the specific capacity of Cu0.6Ni0.4Co2O4 nanowires remain 880 mAh g−1 after 50 cycles, exhibiting much better electrochemical performance than CuCo2O4 and NiCo2O4. After experiencing a large current charge and discharge state, the discharge capacity of Cu0.6Ni0.4Co2O4 nanowires recovers to 780 mAh g−1 at 50 mA g−1, which is ca. 88% of the initial capacity. The high electrochemical performance of Cu0.6Ni0.4Co2O4 nanowires is related to their better electronic conductivity and synergistic effect of metals. This work may provide a new strategy for the design of multicomponent transition metal oxides as anode materials for lithium-ion batteries.

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.

Binary zinc–cobalt metal–organic framework derived mesoporous ZnCo2O4@NC polyhedron as a high-performance lithium-ion battery anode

2020 ◽  
Vol 49 (40) ◽  
pp. 14237-14242 ◽  
Author(s):  
Rui Sun ◽  
Zhaoxia Qin ◽  
Zhiyong Li ◽  
Haosen Fan ◽  
Shengjun Lu
Keyword(s):  
Electrochemical Performance ◽  
Metal Oxides ◽  
Transition Metal Oxides ◽  
High Performance ◽  
Synergistic Effects ◽  
Metal Organic Framework ◽  
Lithium Ion ◽  
Cobalt Metal ◽  
Metal Organic ◽  
Battery Anode

Ternary transition metal oxides have attracted increasing attention due to their many merits, and will enhance electrochemical performance via the synergistic effects of the different single metal oxides.

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
Sign in / Sign up

Export Citation Format

Share Document