Study on Prelithiation Technology of Hard Carbon Electrode Using Stable Metal Lithium Powder

2018 ◽  
Vol 16 (2) ◽  
Author(s):  
Yan-Xian Sun ◽  
Hong-Min Guan ◽  
Zhao-Hua Jiang ◽  
Zhen-Bo Wang
Keyword(s):  
Protective Layer ◽  
Utilization Efficiency ◽  
Carbon Electrode ◽  
Lithium Insertion ◽  
Hard Carbon ◽  
Charge Capacity ◽  
Full Contact ◽  
Initial Charge ◽  
Powder Content ◽  
Lithium Powder

The prelithiation of hard carbon electrode using stable metal lithium powder to compensate the lithium loss during the first lithium insertion is studied in this work. The results show that when the pressure on lithium powder surface is 6 MPa, the Li2CO3 protective layer on the surface of stable metal lithium powder is completely squeezed, which is conducive due to the full contact between the metal lithium and the hard carbon. The prelithiation of hard carbon has little effect on the initial charge capacity and cycle life. Both the pre-lithium capacity and the utilization efficiency of lithium powder increase with the increasing of the lithium powder content, and when the amount of lithium powder is 3 g m−2, the utilization efficiency of lithium powder is 56%.

Preparation of LiFePO4/C Composite Powders

2011 ◽  
Vol 391-392 ◽  
pp. 377-380
Author(s):  
Guo Jun Li ◽  
Ming Yang ◽  
Hai Li Jing ◽  
Rui Ming Ren
Keyword(s):  
Citric Acid ◽  
Oxalic Acid ◽  
Specific Capacity ◽  
Xrd Analysis ◽  
X Ray Diffraction ◽  
Composite Powders ◽  
Charge Capacity ◽  
X Ray ◽  
Initial Charge

LiFePO4/C composite powders were prepared by a simple reaction of as-synthesized FePO4•2H2O, LiOH•H2O, oxalic acid and citric acid. The influence of oxalic acid and citric acid in different ratios was investigated on morphology and electrochemical performance of LiFePO4/C composite powders. The characterization of the composites included X-ray diffraction (XRD) and scanning electron microscopy (SEM). The XRD analysis indicates that the material is well crystallized without impurities. The obtained LiFePO4/C composite powders with well dispersion at CA/OA ratio of 1:1.50 and the initial charge capacity reached 159.3 mAhg-1 at 0.1C rate, meanwhile, the particles prepared at 1:0.75 were close to spherical in shape and the specific capacity value was 149.8 mAhg-1 at 0.1C rate, with a slight decrease on greater C-rates reaching 141.3 mAhg-1 at 1C.

The first in situ 7Li nuclear magnetic resonance study of lithium insertion in hard-carbon anode materials for Li-ion batteries

2003 ◽  
Vol 118 (13) ◽  
pp. 6038-6045 ◽  
Author(s):  
Michel Letellier ◽  
Frédéric Chevallier ◽  
Christian Clinard ◽  
Elzbieta Frackowiak ◽  
Jean-Noël Rouzaud ◽  
...  
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Anode Materials ◽  
Nuclear Magnetic Resonance Study ◽  
Carbon Anode ◽  
Lithium Insertion ◽  
Li Ion Batteries ◽  
Magnetic Resonance Study ◽  
Hard Carbon ◽  
Li Ion

A new possible mechanism of lithium insertion and extraction in low-temperature pyrolytic carbon electrode

Carbon ◽  
1999 ◽  
Vol 37 (4) ◽  
pp. 685-692 ◽  
Author(s):  
Zhaoxiang Wang ◽  
Xuejie Huang ◽  
Rongjian Xue ◽  
Liquan Chen
Keyword(s):  
Low Temperature ◽  
Pyrolytic Carbon ◽  
Carbon Electrode ◽  
Lithium Insertion

scholarly journals NMR study for electrochemically inserted Na in hard carbon electrode of sodium ion battery

2013 ◽  
Vol 225 ◽  
pp. 137-140 ◽  
Author(s):  
Kazuma Gotoh ◽  
Toru Ishikawa ◽  
Saori Shimadzu ◽  
Naoaki Yabuuchi ◽  
Shinichi Komaba ◽  
...  
Keyword(s):  
Sodium Ion ◽  
Sodium Ion Battery ◽  
Carbon Electrode ◽  
Hard Carbon ◽  
Nmr Study

Iron-based fluorides of tetragonal tungsten bronze structure as potential cathodes for Na-ion batteries

2016 ◽  
Vol 4 (19) ◽  
pp. 7382-7389 ◽  
Author(s):  
Yanlin Han ◽  
Jiulin Hu ◽  
Congling Yin ◽  
Ye Zhang ◽  
Junjie Xie ◽  
...  
Keyword(s):  
Tungsten Bronze ◽  
Reversible Capacity ◽  
Tungsten Bronze Structure ◽  
Tetragonal Tungsten Bronze ◽  
Charge Capacity ◽  
Initial Charge ◽  
Iron Based

A iron-based fluoride of tetragonal tungsten bronze structure prepared by topotactically densifying a HTB framework is used as a cathode for Na-ion batteries. K-ion stuffing enables the pristine fluoride to achieve an initial charge capacity of 125 mA h g−1 and reversible capacity of 100–150 mA h g−1.

The Impact of Reducing Carbon on Electric Property and Morphology of Li3V2 (PO4)3 by Wet Milling and the Electric Property and Morphology Study of Li3V2 (PO4)3

2011 ◽  
Vol 236-238 ◽  
pp. 703-707
Author(s):  
Ji Shun Song ◽  
Fu Biao Cao ◽  
Xu Ma ◽  
Jin Kui Wang ◽  
Fei Lv ◽  
...  
Keyword(s):  
High Temperature ◽  
Room Temperature ◽  
Lithium Ion ◽  
Electric Property ◽  
Monoclinic Structure ◽  
Wet Milling ◽  
Charge Capacity ◽  
Initial Charge ◽  
Thermal Sintering ◽  
The Impact

The cathode material Li3V2 (PO4)3is synthesized for Lithium Ion batteries based on wet ball-milling then high–temperature carbon-thermal sintering. We had characterized them with the measurements of XRD ray diffraction, elemental analysis and electrochemical property tests. The results show that we synthesized sample is monoclinic structure; We first synthesized the Li3V2 (PO4)3 through the using conductive carbon, the extra conductive carbon can increase the conductivity of the material. The initial charge capacity is 126.16 mAh/g and initial efficiency is 97.84 % at room temperature, charging voltage3.0～ 4.3 V,0.1 C rate charging, respectively and the surface of the material is smooth, it’s grains grow better, there are excess conductive carbon even attached to the material to improve the conductivity of the material.

Preparation and Electrochemical Properties of LiMn2O4 Nanofibers via Electrospinning for Lithium Ion Batteries

2012 ◽  
Vol 562-564 ◽  
pp. 799-802 ◽  
Author(s):  
Shuai Liu ◽  
Yun Ze Long ◽  
Hong Di Zhang ◽  
Bin Sun ◽  
Cheng Chun Tang ◽  
...  
Keyword(s):  
Discharge Capacity ◽  
Lithium Ion ◽  
Average Diameter ◽  
Potential Range ◽  
Charge Capacity ◽  
High Discharge ◽  
High Discharge Capacity ◽  
Initial Charge ◽  
Charge Discharge ◽  
Scanning Electron

LiMn2O4 nanofibers were prepared via electrospinning and followed by calcination. The surface morphology of as-spun and pure LiMn2O4 nanofibers was characterized by a scanning electron microscope (SEM) with an average diameter of 180 nm. After calcination at 800 °C in air for 5 h, charge/discharge capacity of pure LiMn2O4 nanofibers was measured in the potential range of 3.0 to 4.3 V. Battery testing showed that LiMn2O4 have a high discharge capacity of 80 mAh/g and 85% of the initial charge capacity was maintained for 5 cycles.

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