Combining ReaxFF Simulations and Experiments to Evaluate the Structure–Property Characteristics of Polymeric Binders in Si-Based Li-Ion Batteries

2021 ◽  
Author(s):  
Manav Bhati ◽  
Quan Anh Nguyen ◽  
Sibani Lisa Biswal ◽  
Thomas P. Senftle
Keyword(s):  
Li Ion Batteries ◽  
Structure Property ◽  
Polymeric Binders ◽  
Li Ion

scholarly journals Graphene/PVDF Composites for Ni-rich Oxide Cathodes toward High-Energy Density Li-ion Batteries

Materials ◽  
2021 ◽  
Vol 14 (9) ◽  
pp. 2271
Author(s):  
Chang Won Park ◽  
Jung-Hun Lee ◽  
Jae Kwon Seo ◽  
Weerawat To A Ran ◽  
Dongmok Whang ◽  
...  
Keyword(s):  
Energy Density ◽  
Polyvinylidene Fluoride ◽  
High Energy ◽  
High Energy Density ◽  
Li Ion Batteries ◽  
Force Microscopy ◽  
Atomic Force ◽  
Oxide Cathodes ◽  
Polymeric Binders ◽  
Li Ion

Li-ion batteries (LIBs) employ porous, composite-type electrodes, where few weight percentages of carbonaceous conducting agents and polymeric binders are required to bestow electrodes with electrical conductivity and mechanical robustness. However, the use of such inactive materials has limited enhancements of battery performance in terms of energy density and safety. In this study, we introduced graphene/polyvinylidene fluoride (Gr/PVdF) composites in Ni-rich oxide cathodes for LIBs, replacing conventional conducting agents, carbon black (CB) nanoparticles. By using Gr/PVdF suspensions, we fabricated highly dense LiNi0.85Co0.15Al0.05O2 (NCA) cathodes having a uniform distribution of conductive Gr sheets without CB nanoparticles, which was confirmed by scanning spreading resistance microscopy mode using atomic force microscopy. At a high content of 99 wt.% NCA, good cycling stability was shown with significantly improved areal capacity (Qareal) and volumetric capacity (Qvol), relative to the CB/PVdF-containing NCA electrode with a commercial-level of electrode parameters. The NCA electrodes using 1 wt.% Gr/PVdF (0.9:0.1) delivered a high Qareal of ~3.7 mAh cm−2 (~19% increment) and a high Qvol of ~774 mAh cm−3 (~18% increment) at a current rate of 0.2 C, as compared to the conventional NCA electrode. Our results suggest a viable strategy for superseding conventional conducting agents (CB) and improving the electrochemical performance of Ni-rich cathodes for advanced LIBs.

Synthesis and characterization of novel Li-stuffed garnet-like Li5+2xLa3Ta2−xGdxO12 (0 ≤ x ≤ 0.55): structure–property relationships

2017 ◽  
Vol 46 (3) ◽  
pp. 933-946 ◽  
Author(s):  
Dalia M. Abdel Basset ◽  
Suresh Mulmi ◽  
Mohammed S. El-Bana ◽  
Suzan S. Fouad ◽  
Venkataraman Thangadurai
Keyword(s):  
Solid State ◽  
Synthesis And Characterization ◽  
Li Ion Batteries ◽  
Structure Property ◽  
Structure Property Relationships ◽  
Li Ion

In this article, we report the preparation and characterization of novel Li-stuffed garnets Li5+2xLa3Ta2−xGdxO12 (0 ≤ x ≤ 0.55) for all-solid-state Li ion batteries.

scholarly journals Structure–property insights into nanostructured electrodes for Li-ion batteries from local structural and diffusional probes

2018 ◽  
Vol 6 (1) ◽  
pp. 127-137 ◽  
Author(s):  
Josefa Vidal Laveda ◽  
Beth Johnston ◽  
Gary W. Paterson ◽  
Peter J. Baker ◽  
Matthew G. Tucker ◽  
...  
Keyword(s):  
Microwave Heating ◽  
Lower Energy ◽  
Functional Materials ◽  
Li Ion Batteries ◽  
Structure Property ◽  
Synthetic Methodology ◽  
Nanostructured Electrodes ◽  
Li Ion

Microwave heating presents a faster, lower energy synthetic methodology for the realization of functional materials.

Electrochemical and Safety Performances of Polyimide Nano fiber-based Nonwoven Separators for Li-ion Batteries

2015 ◽  
Vol 6 (1) ◽  
pp. 26-33 ◽  
Author(s):  
Yeon-Joo Kim ◽  
Sang-Min Lee ◽  
Seok Hong Kim ◽  
Hyun-Soo Kim
Keyword(s):  
Li Ion Batteries ◽  
Nano Fiber ◽  
Li Ion

Lithiation Mechanisms in High Entropy Oxides as Anode Materials for Li-Ion Batteries

2020 ◽  
Author(s):  
Paolo Ghigna ◽  
Lorenzo Airoldi ◽  
Martina Fracchia ◽  
Umberto Anselmi-Tamburini ◽  
Paola D'angelo ◽  
...  
Keyword(s):  
Anode Materials ◽  
Li Ion Batteries ◽  
High Entropy ◽  
Li Ion
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