Three-dimensionally ordered porous TiNb2O7 nanotubes: a superior anode material for next generation hybrid supercapacitors

2015 ◽  
Vol 3 (32) ◽  
pp. 16785-16790 ◽  
Author(s):  
Hongsen Li ◽  
Laifa Shen ◽  
Jie Wang ◽  
Shan Fang ◽  
Yingxia Zhang ◽  
...  
Keyword(s):  
Energy Density ◽  
Lithium Ion Batteries ◽  
Power Density ◽  
Anode Material ◽  
Lithium Ion ◽  
Hybrid Supercapacitor ◽  
Hybrid Supercapacitors ◽  
Cycling Performances ◽  
Ordered Porous ◽  
Generation Hybrid

A novel hybrid supercapacitor is successfully constructed based on the 3D ordered porous TiNb2O7 electrode (anode) and graphene grass electrode (cathode). In combination with the advantages from the lithium ion batteries and supercapacitors, this device shows superior energy density and power density with improved cycling performances.

scholarly journals The Ultrafast Laser Ablation of Li(Ni0.6Mn0.2Co0.2)O2 Electrodes with High Mass Loading

2019 ◽  
Vol 9 (19) ◽  
pp. 4067 ◽  
Author(s):  
Penghui Zhu ◽  
Hans Jürgen Seifert ◽  
Wilhelm Pfleging
Keyword(s):  
Energy Density ◽  
Lithium Ion Batteries ◽  
Thick Film ◽  
Power Density ◽  
Discharge Capacity ◽  
Rate Capability ◽  
Lithium Ion ◽  
Ultrafast Laser ◽  
High Mass ◽  
Simultaneous Increase

Lithium-ion batteries have become the most promising energy storage devices in recent years. However, the simultaneous increase of energy density and power density is still a huge challenge. Ultrafast laser structuring of electrodes is feasible to increase power density of lithium-ion batteries by improving the lithium-ion diffusion kinetics. The influences of laser processing pattern and film thickness on the rate capability and energy density were investigated using Li(Ni0.6Mn0.2Co0.2)O2 (NMC 622) as cathode material. NMC 622 electrodes with thicknesses from 91 µm to 250 µm were prepared, while line patterns with pitch distances varying from 200 µm to 600 µm were applied. The NMC 622 cathodes were assembled opposing lithium using coin cell design. Cells with structured, 91 µm thick film cathodes showed lesser capacity losses with C-rates 3C compared to cells with unstructured cathode. Cells with 250 µm thick film cathode showed higher discharge capacity with low C-rates of up to C/5, and the structured cathodes showed higher discharge capacity, with C-rates of up to 1C. However, the discharge capacity deteriorated with higher C-rate. An appropriate choice of laser generated patterns and electrode thickness depends on the requested battery application scenario; i.e., charge/discharge rate and specific/volumetric energy density.

scholarly journals Blow-spun N-doped carbon fiber based high performance flexible lithium ion capacitors

RSC Advances ◽  
2020 ◽  
Vol 10 (17) ◽  
pp. 9833-9839
Author(s):  
Changzhen Zhan ◽  
Jianan Song ◽  
Xiaolong Ren ◽  
Yang Shen ◽  
Hui Wu ◽  
...  
Keyword(s):  
Carbon Fiber ◽  
Energy Density ◽  
Power Density ◽  
High Power ◽  
High Performance ◽  
Lithium Ion ◽  
High Energy ◽  
High Energy Density ◽  
High Power Density ◽  
Hybrid Supercapacitors

Constructing flexible hybrid supercapacitors is a feasible way to achieve devices with high energy density, high power density and flexibility at the same time.

On-chip high power porous silicon lithium ion batteries with stable capacity over 10 000 cycles

Nanoscale ◽  
2015 ◽  
Vol 7 (1) ◽  
pp. 98-103 ◽  
Author(s):  
Andrew S. Westover ◽  
Daniel Freudiger ◽  
Zarif S. Gani ◽  
Keith Share ◽  
Landon Oakes ◽  
...  
Keyword(s):  
Porous Silicon ◽  
Energy Density ◽  
Lithium Ion Batteries ◽  
Power Density ◽  
High Power ◽  
Lithium Battery ◽  
Lithium Ion ◽  
High Rate ◽  
On Chip ◽  
Battery Anode

We demonstrate the operation of a graphene-passivated on-chip porous silicon material as a high rate lithium battery anode with over 50X power density, and 100X energy density improvement compared to identically prepared on-chip supercapacitors.

Single-step microwave mediated synthesis of the CoS2 anode material for high rate hybrid supercapacitors

2014 ◽  
Vol 2 (29) ◽  
pp. 11099-11106 ◽  
Author(s):  
S. Amaresh ◽  
K. Karthikeyan ◽  
I.-C. Jang ◽  
Y. S. Lee
Keyword(s):  
Activated Carbon ◽  
Energy Density ◽  
Anode Material ◽  
Metal Sulfide ◽  
Single Step ◽  
High Rate ◽  
Hybrid Supercapacitor ◽  
Lithium Ions ◽  
Hybrid Supercapacitors ◽  
Capacitor Fabrication

The energy density of a hybrid supercapacitor having CoS2 against activated carbon was increased by direct lithiation of metal sulfide before capacitor fabrication. Lithiation augmented the energy density by two-fold at all current rates and also is responsible for maintaining the capacitance retention during cycling due to the non-depletion of lithium ions in the electrolyte.

Construction of cobalt oxyhydroxide nanosheets with rich oxygen vacancies as high-performance lithium-ion battery anodes

2021 ◽  
Vol 9 (1) ◽  
pp. 453-462
Author(s):  
Yonghuan Fu ◽  
Liewu Li ◽  
Shenghua Ye ◽  
Penggang Yang ◽  
Peng Liao ◽  
...  
Keyword(s):  
Energy Density ◽  
Lithium Ion Batteries ◽  
Lithium Ion Battery ◽  
Anode Material ◽  
High Performance ◽  
Oxygen Vacancies ◽  
Lithium Ion ◽  
High Energy ◽  
High Energy Density ◽  
Cobalt Oxyhydroxide

Hierarchical nanoporous cobalt oxyhydroxide (CoOOH) nanosheets are prepared for use as an anode material in high energy density lithium-ion batteries.

scholarly journals Engineering three-dimensional hybrid supercapacitors and microsupercapacitors for high-performance integrated energy storage

2015 ◽  
Vol 112 (14) ◽  
pp. 4233-4238 ◽  
Author(s):  
Maher F. El-Kady ◽  
Melanie Ihns ◽  
Mengping Li ◽  
Jee Youn Hwang ◽  
Mir F. Mousavi ◽  
...  
Keyword(s):  
Energy Density ◽  
High Performance ◽  
Three Dimensional ◽  
Lithium Ion ◽  
Consumer Electronics ◽  
Hybrid Supercapacitor ◽  
Active Materials ◽  
Space Applications ◽  
Hybrid Supercapacitors ◽  
And Storage

Supercapacitors now play an important role in the progress of hybrid and electric vehicles, consumer electronics, and military and space applications. There is a growing demand in developing hybrid supercapacitor systems to overcome the energy density limitations of the current generation of carbon-based supercapacitors. Here, we demonstrate 3D high-performance hybrid supercapacitors and microsupercapacitors based on graphene and MnO2 by rationally designing the electrode microstructure and combining active materials with electrolytes that operate at high voltages. This results in hybrid electrodes with ultrahigh volumetric capacitance of over 1,100 F/cm3. This corresponds to a specific capacitance of the constituent MnO2 of 1,145 F/g, which is close to the theoretical value of 1,380 F/g. The energy density of the full device varies between 22 and 42 Wh/l depending on the device configuration, which is superior to those of commercially available double-layer supercapacitors, pseudocapacitors, lithium-ion capacitors, and hybrid supercapacitors tested under the same conditions and is comparable to that of lead acid batteries. These hybrid supercapacitors use aqueous electrolytes and are assembled in air without the need for expensive “dry rooms” required for building today’s supercapacitors. Furthermore, we demonstrate a simple technique for the fabrication of supercapacitor arrays for high-voltage applications. These arrays can be integrated with solar cells for efficient energy harvesting and storage systems.

scholarly journals Walnut-structure Si–G/C materials with high coulombic efficiency for long-life lithium ion batteries

RSC Advances ◽  
2018 ◽  
Vol 8 (48) ◽  
pp. 27580-27586 ◽  
Author(s):  
Chengmao Xiao ◽  
Peng He ◽  
Jianguo Ren ◽  
Min Yue ◽  
Youyuan Huang ◽  
...  
Keyword(s):  
Energy Density ◽  
Lithium Ion Batteries ◽  
Anode Material ◽  
Coulombic Efficiency ◽  
Lithium Ion ◽  
High Energy ◽  
High Energy Density ◽  
Long Life ◽  
High Coulombic Efficiency

Nano-sized silicon is a potential high energy density anode material for lithium ion batteries.

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