li ion batteries
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2022 ◽  
Vol 48 ◽  
pp. 103842
Author(s):  
L. Cabras ◽  
D. Danilov ◽  
W. Subber ◽  
V. Oancea ◽  
A. Salvadori

2022 ◽  
Vol 429 ◽  
pp. 132395
Author(s):  
Seongjoon So ◽  
Jaewook Ko ◽  
Yong Nam Ahn ◽  
Il Tae Kim ◽  
Jaehyun Hur

2022 ◽  
Vol 521 ◽  
pp. 230947
Author(s):  
Amin Liu ◽  
Shiyue Li ◽  
Zhenyu Jiang ◽  
Jian Du ◽  
Yehan Tao ◽  
...  

2022 ◽  
Vol 521 ◽  
pp. 230939
Author(s):  
Ridwan A. Ahmed ◽  
Nnaemeka Ebechidi ◽  
Ichwani Reisya ◽  
Kingsley Orisekeh ◽  
Adri Huda ◽  
...  
Keyword(s):  

2022 ◽  
Vol 3 ◽  
Author(s):  
Andrew Stephen Leach ◽  
Alice V. Llewellyn ◽  
Chao Xu ◽  
Chun Tan ◽  
Thomas M. M. Heenan ◽  
...  

Understanding the performance of commercially relevant cathode materials for lithium-ion (Li-ion) batteries is vital to realize the potential of high-capacity materials for automotive applications. Of particular interest is the spatial variation of crystallographic behavior across (what can be) highly inhomogeneous electrodes. In this work, a high-resolution X-ray diffraction technique was used to obtain operando transmission measurements of Li-ion pouch cells to measure the spatial variances in the cell during electrochemical cycling. Through spatially resolved investigations of the crystallographic structures, the distribution of states of charge has been elucidated. A larger portion of the charging is accounted for by the central parts, with the edges and corners delithiating to a lesser extent for a given average electrode voltage. The cells were cycled to different upper cutoff voltages (4.2 and 4.3 V vs. graphite) and C-rates (0.5, 1, and 3C) to study the effect on the structure of the NMC811 cathode. By combining this rapid data collection method with a detailed Rietveld refinement of degraded NMC811, the spatial dependence of the degradation caused by long-term cycling (900 cycles) has also been shown. The variance shown in the pristine measurements is exaggerated in the aged cells with the edges and corners offering an even lower percentage of the charge. Measurements collected at the very edge of the cell have also highlighted the importance of electrode alignment, with a misalignment of less than 0.5 mm leading to significantly reduced electrochemical activity in that area.


Nano Letters ◽  
2022 ◽  
Author(s):  
Jihyun Jang ◽  
Hyun-seung Kim ◽  
San Moon ◽  
Oh B. Chae ◽  
Sung-Jin Ahn ◽  
...  

2022 ◽  
Author(s):  
Hanlei Zhang ◽  
Hao Liu ◽  
Louis F. J. Piper ◽  
M. Stanley Whittingham ◽  
Guangwen Zhou

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