PRiME2020_B01-1102

2020 ◽  
Author(s):  
SOYEUN KIM
Keyword(s):  
Particle Size ◽  
Particle Size Distribution ◽  
Thermal Shock ◽  
Carbon Materials ◽  
Specific Capacity ◽  
Carbon Matrix ◽  
Composite Anode ◽  
High Specific Capacity ◽  
Fast Charging ◽  
One Step

We propose a technology for preparations of novel Si-NPs/carbon(Si/C) composites on the basis of thermal shock of the carbon materials such as natural and artificial graphites. We developed a facile, one-step carbothermal shock method for transformations from micro-Si to Si-NPs less than 150 nm size and well dispersed on carbon matrix (Figure 1.). The particle size distribution of the Si-NPs was narrow and the dispersion was uniform. The Si/C composite anode exhibited a high specific capacity (>1,000 mAh/g) and predominant fast charging behavior.

Facile Synthesis and Electrochemical Characterization of PbO@C Nanocomposites

2012 ◽  
Vol 268-270 ◽  
pp. 189-192
Author(s):  
Chao Yang Liu ◽  
Jian Guo Yu ◽  
Jun Qin Fan ◽  
Yong Nan Zhao ◽  
Xu Fei Xue
Keyword(s):  
Specific Capacity ◽  
Carbon Matrix ◽  
Nitrogen Atmosphere ◽  
Particle Sizes ◽  
Facile Synthesis ◽  
Discharge Current Density ◽  
High Specific Capacity ◽  
Electrochemical Tests ◽  
Highly Dispersed

PbO@C nanocomposites were synthesized by soaking maize in Pb(NO3)2 solutions followed by calcination in nitrogen atmosphere. TEM photos showed highly dispersed PbO nanoparticles homogeneously embedded in the carbon matrix and the main particle sizes of PbO were distributed between 15-29 nm. Electrochemical tests revealed a high specific capacity of 152.6 Fg-1 and good stability at discharge current density of 1.0 Ag-1.

scholarly journals Bimetallic sulfide based on various carbon materials for supercapacitors

2021 ◽  
Vol 257 ◽  
pp. 01075
Author(s):  
YaoChen Song ◽  
Xinran Li ◽  
Junchao Wang ◽  
Mengqiang Wu ◽  
Jiaxuan Liao
Keyword(s):  
Hybrid Material ◽  
Carbon Material ◽  
Carbon Materials ◽  
Specific Capacity ◽  
Carbon Composite ◽  
Electrochemical Process ◽  
Double Layer Capacitor ◽  
One Step ◽  
Ion Attachment ◽  
Bimetallic Sulfide

The NiCo2S4/C hybrid material was successfully prepared by a simple one-step hydrothermal method. Carbon composite increases the specific surface area of the material and provides more ion attachment points during the electrochemical process. Conducive to the ion transportation and transfer, the composition of carbon material greatly improves the conductivity of the hybrid material. Electric double-layer capacitor materials can accept transferred ions faster than pseudocapacitor materials, enable the hybrid materials better adapt to intensity current changes. Compared with a single carbon material or a pseudocapacitance material, it has a higher specific capacity. This discovery is of great significance to the research of pseudocapacitive materials and supercapacitors.

Preparation of MoS2/Ti3C2Tx composite as anode material with enhanced sodium/lithium storage performance

2019 ◽  
Vol 6 (1) ◽  
pp. 117-125 ◽  
Author(s):  
Guangyuan Du ◽  
Mengli Tao ◽  
Wei Gao ◽  
Youquan Zhang ◽  
Renming Zhan ◽  
...  
Keyword(s):  
Hydrothermal Method ◽  
Specific Capacity ◽  
Rate Performance ◽  
Diffusion Kinetics ◽  
Ion Diffusion ◽  
Lithium Storage ◽  
High Specific Capacity ◽  
Storage Performance ◽  
One Step ◽  
Fast Ion

MoS2/Ti3C2 composite with high specific capacity, good rate performance and fast ion diffusion kinetics was synthesized by a one-step hydrothermal method.

scholarly journals A facile synthesis of carbon-encapsulated ZnFe2O4 nanocrystals as anode for lithium-ion batteries

2019 ◽  
Vol 12 (02) ◽  
pp. 1950029 ◽  
Author(s):  
Boyang Liu ◽  
Shuyu Ke ◽  
Xiqin Zhang ◽  
Shuang Cai ◽  
Yingfeng Shao ◽  
...  
Keyword(s):  
Specific Capacity ◽  
Lithium Ion ◽  
Zinc Nitrate ◽  
Nitrate Hexahydrate ◽  
Environment Friendly ◽  
High Specific Capacity ◽  
Median Diameter ◽  
One Step ◽  
Explosive Reaction ◽  
The One

An explosive reaction between zinc nitrate hexahydrate and ferrocene taking place below 200∘C is discovered, which is employed for the one-step preparation of carbon-encapsulated ZnFe2O4 nanocrystals (ZnFe2O4@C) with core–shell structure in an autoclave. The small-sized equiaxed ZnFe2O4 nanocrystals have a median diameter of 22.1[Formula: see text]nm. The uniform carbon shell of about 5[Formula: see text]nm in thickness is amorphous, and its content is 32.6[Formula: see text]wt.% in the nanocomposite. After 50 cycles, the ZnFe2O4@C anode still maintains a high specific capacity of 551[Formula: see text]mAh[Formula: see text]g[Formula: see text] at a current density of 50[Formula: see text]mA[Formula: see text]g[Formula: see text]. The efficient, energy-saving and environment-friendly method will be very attractive for preparing different kinds of carbon-encapsulated nanocrystals.

Controlled Crystallization Synthesis of Porous FePO4·3H2O Micro-Spheres for Fabricating High Performance LiFePO4/C Cathode Materials

2011 ◽  
Vol 399-401 ◽  
pp. 1510-1514
Author(s):  
Wen Kui Zhang ◽  
Hui Juan Zeng ◽  
Yang Xia ◽  
Ling Chao Qian ◽  
Bin Zhao ◽  
...  
Keyword(s):  
Particle Size ◽  
Particle Size Distribution ◽  
Cathode Materials ◽  
High Performance ◽  
Specific Capacity ◽  
Lithium Ion ◽  
Cycling Performance ◽  
Crystallization Method ◽  
Initial Discharge ◽  
Controlled Crystallization

Amorphous porous FePO4·3H2O micro-spheres were synthesized via a controlled crystallization method. These micro-spheres have a particle size distribution from 10 to 28 μm. There are larger numbers of pores on the surface of FePO4·3H2O microspheres, which are important to synthesize high performance LiFePO4 cathode materials for the application of lithium ion battery. The electrochemical properties of the LiFePO4/C electrode, preparing by using the above porous spherical FePO4·3H2O particles, were measured. The electrochemical results show that the obtained LiFePO4/C has a high initial discharge specific capacity of 141.4 mAhg-1 and good cycling performance at 0.5 C. The microstructural and electrochemical analyses indicate that this porous spherical FePO4·3H2O is a fascinating precursor for preparing LiFePO4/C cathode materials.

Fast charging with high capacity for aluminum rechargeable batteries using organic additive in an ionic liquid electrolyte

2020 ◽  
Vol 22 (47) ◽  
pp. 27525-27528
Author(s):  
Yeseul Park ◽  
Danbi Lee ◽  
Jongmin Kim ◽  
Gibaek Lee ◽  
Yongsug Tak
Keyword(s):  
Ionic Liquid ◽  
Specific Capacity ◽  
High Capacity ◽  
Liquid Electrolyte ◽  
Rechargeable Batteries ◽  
Organic Additive ◽  
High Current ◽  
High Specific Capacity ◽  
Ionic Liquid Electrolyte ◽  
Fast Charging

The electrolyte containing benzene additive in Al-ion battery exhibited the best electrochemical properties with a high specific capacity at an extremely high current rate.

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