scholarly journals Conformal Carbon Coating on Hard Carbon Anode Derived from Propionaldehyde for Exellent Performance of Lithium-Ion Batteries

2019 ◽  
pp. 2804-2814 ◽  
Author(s):  
Longfeng Hu ◽  
Keyword(s):  
Lithium Ion Batteries ◽  
Carbon Coating ◽  
Lithium Ion ◽  
Carbon Anode ◽  
Hard Carbon

Graphite-like structure of disordered polynaphthalene hard carbon anode derived from carbonization of perylene-3,4,9,10-tetracarboxylic dianhydride for fast charging lithium-ion batteries

2021 ◽  
Author(s):  
yitao lou ◽  
XianFa Rao ◽  
Jianjun Zhao ◽  
Jun Chen ◽  
Baobao Li ◽  
...  
Keyword(s):  
High Temperature ◽  
Lithium Ion Batteries ◽  
Carbon Material ◽  
Anode Materials ◽  
Lithium Ion ◽  
Carbon Anode ◽  
Hard Carbon ◽  
Fast Charging ◽  
Tetracarboxylic Dianhydride ◽  
Charge Discharge

In order to develop novel fast charge/discharge carbon anode materials, an organic hard carbon material (PTCDA-1100) is obtained by calcination of perylene-3,4,9,10-tetracarboxylic dianhydride (PTCDA) at high temperature of 1100 oC....

Formation of thermally resistant films induced by vinylene carbonate additive on a hard carbon anode for lithium ion batteries at elevated temperature

RSC Advances ◽  
2016 ◽  
Vol 6 (79) ◽  
pp. 75777-75781 ◽  
Author(s):  
Yi-Hung Liu ◽  
Sahori Takeda ◽  
Ikue Kaneko ◽  
Hideya Yoshitake ◽  
Masahiro Yanagida ◽  
...  
Keyword(s):  
Liquid Chromatography ◽  
Elevated Temperature ◽  
Lithium Ion Batteries ◽  
Mass Spectroscopy ◽  
Film Formation ◽  
Lithium Ion ◽  
Direct Analysis ◽  
Carbon Anode ◽  
Hard Carbon ◽  
Vinylene Carbonate

Vinylene carbonate induced film formation in a LiFePO4/hard carbon cell is clarified based on liquid chromatography mass spectroscopy and direct analysis in real time mass spectroscopy.

Double-Coated Hard Carbon as an Anode Material for High C-Rate Lithium Ion Batteries

2018 ◽  
Vol 921 ◽  
pp. 105-110
Author(s):  
Yu Shiang Wu ◽  
Pei Rong Lyu
Keyword(s):  
Low Temperature ◽  
Lithium Ion Batteries ◽  
Anode Materials ◽  
Coulombic Efficiency ◽  
Lithium Ion ◽  
Cycle Performance ◽  
Carbon Anode ◽  
Hard Carbon ◽  
Artificial Graphite ◽  
Electric Cars

Technical developments of anode materials for lithium ion batteries have mainly focused on graphite (natural graphite, artificial graphite, and MCMB). Anode materials such as hard carbon, soft carbon, LTO, and Si-C are still under development. Hard carbon is produced by subjecting a polymer to thermal decomposition and carbonization, yielding nongraphitizable carbon. It exhibits structural stability, safety, and excellent performance at low temperature; moreover, batteries made of hard carbon have a long charge/discharge cycle life. Therefore, hard carbon is suitable for use in Li–ion batteries for electric cars that emphasize output power. This study developed a hard carbon anode by using phenolic resins that were ground to powders with a particle size (D50) of approximately 8 μm. Subsequently, the powders were heat treated at temperatures from 900°C to 1300°C for carbonization to reduce the specific surface area (SSA) of hard carbon. However, the SSA was determined to be still larger than that stipulated in commercial specifications. Therefore, this study coated the hard carbon with 1.5 wt.% poly (dimethyldiallylammonium chloride) and 1.5 wt.% poly (sodium-p-styrenesulfonate) to further reduce its SSA. The results indicated that 1st discharge capacity of the coated hard carbon was 330 mAhg−1. Its 1st irreversibility was reduced from 24.3% to 8.1% and SSA was reduced from 10.2 to 2.8 m2g−1; additionally, its coulombic efficiency after 20 cycles was over 99%. The cycle performance of the double-coated hard carbon at low temperature (-20°C) was improved, and it satisfies high C-rate (10 C) requirements.

scholarly journals Self‐standing hard carbon anode derived from hyper‐linked nanocellulose with high cycling stability for lithium‐ion batteries

EcoMat ◽  
2021 ◽  
Vol 3 (2) ◽  
Author(s):  
Yan Li ◽  
Yi‐Feng Du ◽  
Guo‐Hua Sun ◽  
Jia‐Yao Cheng ◽  
Ge Song ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Lithium Ion ◽  
Cycling Stability ◽  
Carbon Anode ◽  
Hard Carbon

The Compatibility of a Boron-Based Anion Receptor with the Carbon Anode in Lithium-Ion Batteries

2003 ◽  
Vol 6 (2) ◽  
pp. A43 ◽  
Author(s):  
Xuehui Sun ◽  
Hung Sui Lee ◽  
Xiao-Qing Yang ◽  
James McBreen
Keyword(s):  
Lithium Ion Batteries ◽  
Lithium Ion ◽  
Carbon Anode ◽  
Anion Receptor

scholarly journals Aging Mechanisms of Electrode Materials in Lithium-Ion Batteries for Electric Vehicles

2015 ◽  
Vol 2015 ◽  
pp. 1-11 ◽  
Author(s):  
Cheng Lin ◽  
Aihua Tang ◽  
Hao Mu ◽  
Wenwei Wang ◽  
Chun Wang
Keyword(s):  
Lithium Ion Batteries ◽  
Electrode Materials ◽  
Electrochemical Behaviour ◽  
Lithium Ion ◽  
Storage Conditions ◽  
Carbon Anode ◽  
Side Reactions ◽  
Metallic Oxide ◽  
Lithium Ions ◽  
Aging Mechanisms

Electrode material aging leads to a decrease in capacity and/or a rise in resistance of the whole cell and thus can dramatically affect the performance of lithium-ion batteries. Furthermore, the aging phenomena are extremely complicated to describe due to the coupling of various factors. In this review, we give an interpretation of capacity/power fading of electrode-oriented aging mechanisms under cycling and various storage conditions for metallic oxide-based cathodes and carbon-based anodes. For the cathode of lithium-ion batteries, the mechanical stress and strain resulting from the lithium ions insertion and extraction predominantly lead to structural disordering. Another important aging mechanism is the metal dissolution from the cathode and the subsequent deposition on the anode. For the anode, the main aging mechanisms are the loss of recyclable lithium ions caused by the formation and increasing growth of a solid electrolyte interphase (SEI) and the mechanical fatigue caused by the diffusion-induced stress on the carbon anode particles. Additionally, electrode aging largely depends on the electrochemical behaviour under cycling and storage conditions and results from both structural/morphological changes and side reactions aggravated by decomposition products and protic impurities in the electrolyte.

Carbon Coating on Silicon for High-Performance Anode in Lithium-Ion Batteries

2021 ◽  
Vol MA2021-01 (2) ◽  
pp. 124-124
Author(s):  
Shuo Zhou ◽  
Shan Fang ◽  
Chen Fang ◽  
Gao Liu
Keyword(s):  
Lithium Ion Batteries ◽  
High Performance ◽  
Carbon Coating ◽  
Lithium Ion
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