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

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.

Boosting Cycling Stability of Ni-rich Layered Oxide Cathode by Dry Coating of Ultrastable Li3V2(PO4)3 Nanoparticles

Nanoscale ◽  
2021 ◽  
Author(s):  
Dongdong Wang ◽  
Qizhang Yan ◽  
Mingqian Li ◽  
Hongpeng Gao ◽  
Jianhua Tian ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Cathode Materials ◽  
Lithium Ion ◽  
High Energy ◽  
Cycling Stability ◽  
Next Generation ◽  
Layered Oxides ◽  
Dry Coating ◽  
Layered Oxide ◽  
Oxide Cathode

Nickel (Ni)-rich layered oxides such as LiNi0.6Co0.2Mn0.2O2 (NCM622) represent one of the most promising candidates for the next-generation high-energy lithium-ion batteries (LIBs). However, the pristine Ni-rich cathode materials usually suffer...

Mechanical constraining double-shell protected Si-based anode material for lithium-ion batteries with long-term cycling stability

2020 ◽  
Vol 846 ◽  
pp. 156437
Author(s):  
Yan Zhang ◽  
Bisai Li ◽  
Bin Tang ◽  
Zeen Yao ◽  
Xiongjie Zhang ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Anode Material ◽  
Lithium Ion ◽  
Cycling Stability
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