Fabrication of conjugated polyimides with porous crosslinked networks and applications as Li-ion battery cathodes

2021 ◽  
Author(s):  
Tian-Lu Cui ◽  
Wen-Bei Zhang ◽  
Jian-Jun Chen ◽  
Bo-Wen Zhang ◽  
Hui Wang ◽  
...  
Keyword(s):  
Specific Surface ◽  
Conjugated Polymers ◽  
Chemical Stability ◽  
High Specific Surface Area ◽  
Porous Polymers ◽  
Condensation Polymerization ◽  
Li Ion Battery ◽  
Crosslinked Networks ◽  
Li Ion ◽  
Unique Chemical

Conjugated porous polymers were successfully synthesized through dynamic covalent condensation polymerization by using aromatic anhydrides and triacylhydrazine benzene. The obtained conjugated polymers with unique chemical stability, high specific surface area...

Hydrothermally Synthesized Li4Ti5O12 Nanotubes Anode Material with Enhanced Li-Ion Battery Performances

2019 ◽  
Vol 19 (11) ◽  
pp. 7387-7391 ◽  
Author(s):  
Xiao-Chong Zhao ◽  
Pan Yang ◽  
Tao Ding ◽  
Li-Jun Yang ◽  
Xianmin Mai ◽  
...  
Keyword(s):  
Specific Surface ◽  
Surface Area ◽  
Specific Surface Area ◽  
Hollow Structure ◽  
High Specific Surface Area ◽  
High Rate ◽  
Li Ion Battery ◽  
Initial Discharge ◽  
Li Ion ◽  
Improved Performance

Hollow Li4Ti5O12 nanotubes were synthesized by stirring in a heated oil bath using P25 as titanium source and lithium hydroxide as lithium source. The as-prepared samples displayed a nanotube structure, with diameter of about 20~50 nm and length of 0.4 μm. The specific surface area of as-prepared samples reached 153.2 m2g−1. It is demonstrated that the Li4Ti5O12 nanotubes with improved performance can be obtained by hollow structure and high specific surface area. In consequence, it delivered a high reversible initial discharge capacity of 174.2 mAh g−1 at 0.5 C rate. A stable capacity of 170.9 mAh g−1 was delivered when the rate was reduced back to 0.5 C, suggesting good structural stability of the nanocable, high reversibility even after high rate charge– discharge, and good cycle stability. In addition, a capacity of 134.9 mAh g−1 and 98 mAhg−1 could be retained at a high rate of 5 C and 10 C, indicating excellent rate performances.

Ultrastable Li-ion battery anodes by encapsulating SnS nanoparticles in sulfur-doped graphene bubble films

Nanoscale ◽  
2020 ◽  
Vol 12 (6) ◽  
pp. 3941-3949 ◽  
Author(s):  
Bing Zhao ◽  
Daiyun Song ◽  
Yanwei Ding ◽  
Juan Wu ◽  
Zhixuan Wang ◽  
...  
Keyword(s):  
Specific Surface ◽  
Surface Area ◽  
Specific Surface Area ◽  
Flake Graphite ◽  
Li Ion Battery ◽  
Doped Graphene ◽  
Li Ion

SnS nanoparticles are encapsulated into sulfur-doped graphene bubble film presenting a flake-graphite-like structure. The closely packed SnS@G composite shows much lower specific surface area, smaller irreversible Li+ consumption.

Fabrication of Mesoporous C60/Carbon Hybrids with 3D Porous Structure for Energy Storage Applications

2021 ◽  
Vol 21 (3) ◽  
pp. 1483-1492
Author(s):  
Arun V. Baskar ◽  
Jefrin M. Davidraj ◽  
Ajanya M. Ruban ◽  
Stalin Joseph ◽  
Gurwinder Singh ◽  
...  
Keyword(s):  
Specific Surface ◽  
Porous Structure ◽  
Surface Area ◽  
Specific Surface Area ◽  
Hybrid Materials ◽  
Current Density ◽  
Specific Capacity ◽  
3D Structure ◽  
Li Ion Battery ◽  
Li Ion

We report on the synthesis of 3D mesoporous fullerene/carbon hybrid materials with ordered porous structure and high surface area by mixing the solution of fullerene and sucrose molecules in the nanochannels of 3D mesoporous silica, KIT-6 via nanotemplating approach. The addition of sucrose molecules in the synthesis offers a thin layer of carbon between the fullerene molecules which enhances not only the specific surface area and the specific pore volume but also the conductivity of the hybrid materials. The prepared hybrids exhibit 3D mesoporous structure and show a much higher specific surface area than that of the pure mesoporous fullerene. The hybrids materials are used as the electrodes for supercapacitor and Li-ion battery applications. The optimised hybrid sample shows an excellent rate capability and a high specific capacitance of 254 F/g at the current density of 0.5 A/g, which is much higher than that of the pure mesoporous fullerene, mesoporous carbon, activated carbon and multiwalled carbon nanotubes. When used as the electrode for Li-ion battery, the sample delivers the largest specific capacity of 1067 mAh/g upon 50 cycles at the current density of 0.1 A/g with stability. These results reveal that the addition of carbon in the mesoporous fullerene with 3D structure makes a significant impact on the electrochemical properties of the hybrid samples, demonstrating their potential for applications in Li-ion battery and supercapacitor devices.

scholarly journals Preparation and Properties of Graphene-based Inorganic Nanocomposites

2019 ◽  
Vol 2 (1) ◽  
Author(s):  
Qing Liao ◽  
Tingting Song
Keyword(s):  
Specific Surface ◽  
Surface Area ◽  
Specific Surface Area ◽  
Chemical Stability ◽  
High Performance ◽  
Inorganic Compounds ◽  
High Specific Surface Area ◽  
Two Dimensional ◽  
Preparation Methods ◽  
Inorganic Nanocomposites

Graphene is a two-dimensional hexagonal monoatomic layer crystal composed of carbon atoms, which exhibits the shape of a honeycomb and plays an important role in the fields of optics and mechanics. It also has the advantages of high specific surface area, strong chemical stability and special planar structure. It is an ideal carrier for carrying various inorganic compounds and is suitable for the development of high performance graphene-based inorganic nanocomposites.[1] Based on this, the paper introduces the characteristics of graphene, expounds the related content of graphene-based inorganic nanocomposites, and studies the preparation methods and properties of graphene-based inorganic nanocomposites.

A novel NiCo2O4 anode morphology for lithium-ion batteries

2015 ◽  
Vol 3 (22) ◽  
pp. 11970-11975 ◽  
Author(s):  
Tao Li ◽  
Xinhai Li ◽  
Zhixing Wang ◽  
Huajun Guo ◽  
Yan Li
Keyword(s):  
Electrochemical Performance ◽  
Specific Surface ◽  
Lithium Ion Batteries ◽  
Surface Area ◽  
Specific Surface Area ◽  
Anode Materials ◽  
Lithium Ion ◽  
High Specific Surface Area ◽  
Li Ion Batteries ◽  
Li Ion

Wrinkled NiCo2O4 particles with a high specific surface area showed superior electrochemical performance as anode materials for Li-ion batteries.

Hierarchically porous activated carbons prepared via a dissipative process: high-capacity cathode for Li ion capacitors

Nanoscale ◽  
2021 ◽  
Author(s):  
Qi Cao ◽  
Guoqing Ning ◽  
Fan Yang ◽  
Ye Wang ◽  
Bofeng Li ◽  
...  
Keyword(s):  
Energy Storage ◽  
Specific Surface ◽  
High Performance ◽  
Activated Carbons ◽  
High Capacity ◽  
High Specific Surface Area ◽  
Dissipative Process ◽  
Capacitive Energy Storage ◽  
Hierarchically Porous ◽  
Li Ion

Activated carbons with high specific surface area (SSA) and well-modulated pore structure are highly desirable for achieving high-performance capacitive energy storage. Herein, hierarchically porous activated carbons (PACs) are synthesized by...

Oxidized PAN nanofibrous membrane as a separator for Li-ion battery

2014 ◽  
Author(s):  
J.H. Lee ◽  
M.H. Kim ◽  
S.H. Lee ◽  
S.Y. Jin ◽  
W.H. Park
Keyword(s):  
Nanofibrous Membrane ◽  
Li Ion Battery ◽  
Li Ion
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