Nanoscale kinetic imaging of lithium ion secondary battery materials using scanning electrochemical cell microscopy

2020 ◽  
Vol 56 (65) ◽  
pp. 9324-9327 ◽  
Author(s):  
Yasufumi Takahashi ◽  
Tsubasa Yamashita ◽  
Daiko Takamatsu ◽  
Akichika Kumatani ◽  
Takeshi Fukuma
Keyword(s):  
Diffusion Coefficient ◽  
Lithium Ion Batteries ◽  
Electrochemical Cell ◽  
Lithium Ion ◽  
Battery Materials ◽  
Electrochemical Reactivity ◽  
Secondary Battery ◽  
Kinetic Imaging ◽  
Cell Microscopy

To visualize the electrochemical reactivity and obtain the diffusion coefficient of the anode of lithium-ion batteries, we developed scanning electrochemical cell microscopy (SECCM) in a glovebox.

Visualization of inhomogeneous current distribution on ZrO2-coated LiCoO2 thin-film electrodes using scanning electrochemical cell microscopy

2019 ◽  
Vol 55 (4) ◽  
pp. 545-548 ◽  
Author(s):  
Hirotaka Inomata ◽  
Yasufumi Takahashi ◽  
Daiko Takamatsu ◽  
Akichika Kumatani ◽  
Hiroki Ida ◽  
...  
Keyword(s):  
Thin Film ◽  
Metal Oxide ◽  
Lithium Ion Batteries ◽  
Current Distribution ◽  
Surface Coating ◽  
Cathode Surface ◽  
Electrochemical Cell ◽  
Lithium Ion ◽  
Thin Layers ◽  
Cell Microscopy

Cathode surface coating with metal-oxide thin layers has been intensively studied to improve the cycle durability of lithium-ion batteries.

Synthesis of Carambola-Like CuO via a Chemical Bath Method

2010 ◽  
Vol 148-149 ◽  
pp. 1167-1170 ◽  
Author(s):  
Jian Peng Li ◽  
Feng Qiang Sun
Keyword(s):  
Lithium Ion Batteries ◽  
Potential Application ◽  
Lithium Ion ◽  
Copper Hydroxide ◽  
Electrochemical Reactivity ◽  
Simple Chemical

By a simple chemical bath method, new carambola-like structured CuO had been fabricated in a solution composed of Cu(NO3)2, NaOH and hexamethylenetetramine (HMTA). The formation of such structure was caused by in-situ dehydration and separation of flower-like petals composed of several pieces of copper hydroxide sheets. The corresponding electrochemical reactivity of structured CuO has been investigated, which demonstrated the potential application for lithium ion batteries.

scholarly journals Mixed Modes Fracture and Fatigue Evaluation for Lithium-Ion Batteries

2012 ◽  
Author(s):  
Michael A. Stamps ◽  
Hsiao-Ying Shadow Huang
Keyword(s):  
Lithium Ion Batteries ◽  
Electric Vehicles ◽  
Renewable Energy Sources ◽  
Lithium Ion ◽  
Fatigue Analysis ◽  
Degradation Mechanisms ◽  
Space Applications ◽  
Battery Materials ◽  
Finite Element Software ◽  
Rate Capacity

Lithium ion batteries have become a widely known commodity for satisfying the world’s mobile energy storage needs. But these needs are becoming increasingly important, especially in the transportation industry, as concern for rising oil prices and environmental impact from fossil fuels are pushing for deployment of more electric vehicles (EV) or plug in hybrid-electric vehicles (PHEV) and renewable energy sources. The objective of this research is to obtain a fundamental understanding of degradation mechanisms and rate-capacity loss in lithium-ion batteries through fracture mechanics and fatigue analysis approaches. In this study we follow empirical observations that mechanical stresses accumulate on electrode materials during the cycling process. Crack induced fracturing will then follow in the material which electrical contact surface area is degraded and over capacitance of the battery reduces. A fatigue analysis simulation is applied using ANSYS finite element software coupled with analytical models to alleviate these parameters that play the most pivotal roles in affecting the rate-capacity and cycle life of the lithium-ion battery. Our results have potential to provide new models and simulation tools for clarifying the interplay of structure mechanics and electrochemistry while offering an increased understanding of fatigue degradation mechanisms in rechargeable battery materials. These models can aid manufacturers in the optimization of battery materials to ensure longer electrochemical cycling life with high-rate capacity for improved consumer electronics, electric vehicles, and many other military or space applications.

scholarly journals 0D-1D Hybrid Silicon Nanocomposite as Lithium-Ion Batteries Anodes

Nanomaterials ◽  
2020 ◽  
Vol 10 (3) ◽  
pp. 515
Author(s):  
Sergio Pinilla ◽  
Sang-Hoon Park ◽  
Kenneth Fontanez ◽  
Francisco Márquez ◽  
Valeria Nicolosi ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Strain Relaxation ◽  
High Capacity ◽  
Lithium Ion ◽  
Battery Materials ◽  
Societal Changes ◽  
Current Densities ◽  
Hybrid Silicon ◽  
Good Strain ◽  
Power Densities

Lithium ion batteries (LIBs) are the enabling technology for many of the societal changes that are expected to happen in the following years. Among all the challenges for which LIBs are the key, vehicle electrification is one of the most crucial. Current battery materials cannot provide the required power densities for such applications and therefore, it makes necessary to develop new materials. Silicon is one of the proposed as next generation battery materials, but still there are challenges to overcome. Poor capacity retention is one of those drawbacks, and because it is tightly related with its high capacity, it is a problem rather difficult to address with common and scalable fabrication processes. Here we show that combining 0D and 1D silicon nanostructures, high capacity and stability can be achieved even using standard electrode fabrication processes. Capacities as high as 1200 mAh/g for more than 500 cycles at high current densities (2 A/g) were achieved with the produced hybrid 0D/1D electrodes. In this research, it was shown that while 0D nanostructures provide good strain relaxation capabilities, 1D nanomaterials contribute with enhanced cohesion and conductive matrix integrity.

scholarly journals A first principles study of spinel ZnFe2O4 for electrode materials in lithium-ion batteries

2017 ◽  
Vol 19 (38) ◽  
pp. 26322-26329 ◽  
Author(s):  
Haoyue Guo ◽  
Yiman Zhang ◽  
Amy C. Marschilok ◽  
Kenneth J. Takeuchi ◽  
Esther S. Takeuchi ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Lithium Ion Battery ◽  
First Principles ◽  
High Performance ◽  
Electrode Materials ◽  
Lithium Ion ◽  
Battery Materials ◽  
First Principles Study

The interplay among Li, O2−, Fe3+ and Zn2+ enables the high performance of ZnFe2O4 as Lithium ion battery materials.

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