Gas-phase oxidation modification strategy of spent graphite from spent LiFePO4 with enhanced initial coulombic efficiency for lithium-ion battery anodes

2021 ◽  
Author(s):  
Zheng Li ◽  
songxian Li ◽  
tao wang ◽  
Kai Yang ◽  
Zhongliang Tian ◽  
...  
Keyword(s):  
Environmental Protection ◽  
Lithium Ion Battery ◽  
Gas Phase ◽  
Significant Role ◽  
Coulombic Efficiency ◽  
Lithium Ion ◽  
Phase Oxidation ◽  
Gas Phase Oxidation ◽  
Initial Coulombic Efficiency

Recycling graphite from spent LiFePO4 batteries plays a significant role in relieving the shortage of environmental protection and waste of valuable resources. However, low initial coulombic efficiency (ICE) and poor...

Tailoring of CNT surface oxygen groups by gas-phase oxidation and its implications for lithium ion batteries

2012 ◽  
Vol 15 (1) ◽  
pp. 10-13 ◽  
Author(s):  
Stefan Klink ◽  
Edgar Ventosa ◽  
Wei Xia ◽  
Fabio La Mantia ◽  
Martin Muhler ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Gas Phase ◽  
Lithium Ion ◽  
Surface Oxygen ◽  
Surface Oxygen Groups ◽  
Phase Oxidation ◽  
Gas Phase Oxidation ◽  
Oxygen Groups

Swelling-Controlled Double-Layered SiOx/Mg2SiO4/SiOx Composite with Enhanced Initial Coulombic Efficiency for Lithium-Ion Battery

2021 ◽  
Vol 13 (6) ◽  
pp. 7161-7170
Author(s):  
Asif Raza ◽  
Jae Yup Jung ◽  
Cheol-Ho Lee ◽  
Byung Gon Kim ◽  
Jeong-Hee Choi ◽  
...  
Keyword(s):  
Lithium Ion Battery ◽  
Coulombic Efficiency ◽  
Lithium Ion ◽  
Initial Coulombic Efficiency

scholarly journals Effects of Alumina Films on N-Doped Carbon Nanotubes/Graphene Composites as Anode Materials of Lithium-Ion Batteries

2020 ◽  
Vol 2020 ◽  
pp. 1-13
Author(s):  
Chuen-Chang Lin ◽  
Shu-Pei Hsu ◽  
Guang-Jhong Chen
Keyword(s):  
Carbon Nanotubes ◽  
Lithium Ion Battery ◽  
Coulombic Efficiency ◽  
Lithium Ion ◽  
Electrochemical Stability ◽  
Discharge Process ◽  
Charge Capacity ◽  
Graphene Composite ◽  
Coin Cell ◽  
Initial Coulombic Efficiency

A carbon nanotubes/graphene composite is grown on nickel foil without additional catalysts by one-step ambient pressure chemical vapor deposition (CVD). Next, the carbon nanotubes/graphene composite is modified by radio frequency (RF) nitrogen plasma. Finally, to improve its initial coulombic efficiency/electrochemical stability, lower potential during the charge process (coin cell), and boost potential during the discharge process (lithium-ion battery), alumina is deposited onto the N-doped carbon nanotubes/graphene composite by RF magnetron sputtering at different power levels and periods of time. The charge specific capacity (597 mAh/g) and initial coulombic efficiency (81.44% > 75.02% for N-doped carbon nanotubes/graphene) of Al2O3/N-doped CNTs/graphene for the coin cell reached a maximum at the best sputtering condition ( power = 65   W and time = 30   min ). Al2O3/N-doped CNTs/graphene (the best sputtering condition) exhibits higher initial coulombic efficiency (79.8%) compared with N-doped CNTs/graphene (initial coulombic efficiency: 74.3%) for the lithium-ion battery. Furthermore, the achievement fraction (about 70%) of full charge capacity (coin cell) for Al2O3/N-doped carbon nanotubes/graphene (the best sputtering condition) is higher than that (about 30%) for N-doped carbon nanotubes/graphene at a voltage lower than about 0.25 V. Moreover, it also shows a little higher electrochemical stability (coin cell) of charge capacity for Al2O3/N-doped carbon nanotubes/graphene (the best sputtering condition) in comparison with N-doped carbon nanotubes/graphene and Al2O3/N-doped CNTs/graphene (the best sputtering condition) exhibits better cyclic stability (lithium-ion battery) of discharge capacity compared with N-doped CNTs/graphene.

scholarly journals Modified SiO hierarchical structure materials with improved initial coulombic efficiency for advanced lithium-ion battery anodes

RSC Advances ◽  
2019 ◽  
Vol 9 (20) ◽  
pp. 11369-11376 ◽  
Author(s):  
Lizhao Xie ◽  
Hui Liu ◽  
Shaoxiong Lin ◽  
Xulai Yang ◽  
Meizhou Qi ◽  
...  
Keyword(s):  
Lithium Ion Battery ◽  
Hierarchical Structure ◽  
High Performance ◽  
Carbon Coating ◽  
Coulombic Efficiency ◽  
Lithium Ion ◽  
Simple Method ◽  
Initial Coulombic Efficiency

A simple method of prelithiation of SiO along with carbon coating to achieve high performance SiO-based materials.

scholarly journals Fabrication and Characterization of Nylon 66/PAN Nanofibrous Film Used as Separator of Lithium-Ion Battery

Polymers ◽  
2021 ◽  
Vol 13 (12) ◽  
pp. 1984
Author(s):  
Yu-Hsun Nien ◽  
Chih-Ning Chang ◽  
Pao-Lin Chuang ◽  
Chun-Han Hsu ◽  
Jun-Lun Liao ◽  
...  
Keyword(s):  
Lithium Ion Battery ◽  
Lithium Batteries ◽  
Lithium Battery ◽  
Coulombic Efficiency ◽  
Electronic Devices ◽  
Lithium Ion ◽  
Nylon 66 ◽  
Excellent Electrochemical Performance ◽  
Fabrication And Characterization

In recent years, portable electronic devices have flourished, and the safety of lithium batteries has received increasing attention. In this study, nanofibers were prepared by electrospinning using different ratios of nylon 66/polyacrylonitrile (PAN), and their properties were studied and compared with commercial PP separators. The experimental results show that the addition of PAN in nylon 66/PAN nanofibrous film used as separator of lithium-ion battery can enhance the porosity up to 85%. There is also no significant shrinkage in the shrinkage test, and the thermal dimensional stability is good. When the Li/LiFePO4 lithium battery is prepared by nylon 66/PAN nanofibrous film used as separator, the capacitor can be maintained at 140 mAhg−1 after 20 cycles at 0.1 C, and the coulombic efficiency is still maintained at 99%, which has excellent electrochemical performance.

Gas phase oxidation of furfural to maleic anhydride on V 2 O 5 /γ-Al 2 O 3 catalysts: Reaction conditions to slow down the deactivation

2017 ◽  
Vol 348 ◽  
pp. 265-275 ◽  
Author(s):  
N. Alonso-Fagúndez ◽  
M. Ojeda ◽  
R. Mariscal ◽  
J.L.G. Fierro ◽  
M. López Granados
Keyword(s):  
Maleic Anhydride ◽  
Gas Phase ◽  
Reaction Conditions ◽  
Phase Oxidation ◽  
Gas Phase Oxidation
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