3篇
您的检索式：作者名="Minyuan Lu"
|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Degradation mechanism analysis of LiNi_(0.5)Co_(0.2)Mn_(0.3)O_(2) single crystal cathode materials through machine learning显示文摘LiNi_(0.5)Co_(0.2)Mn_(0.3)O_(2)(NCM523)has become one of the most popular cathode materials for current lithium-ion batteries due to its high-energy density and cost performance.However,the rapid capacity fading of NCM severely hinders its development and applications.Here,the single crystal NCM523 materials under different degradation states are characterized using scanning transmission electron microscopy(STEM).Then we developed a neural network model with a two-sequential attention block to recognize the crystal structure and locate defects in STEM images.The number of point defects in NCM523 is observed to experience a trend of increasing first and then decreasing in the degradation process.The space between the transition metal columns shrinks obviously,inducing dramatic capacity decay.This analysis sheds light on the defect evolution and chemical transformation correlated with layered material degradation.It also provides interesting hints for researchers to regenerate the electrochemical capacity and design better battery materials with longer life. | Wuxin Sha Yaqing Guo Danpeng Cheng Qigao Han Ping Lou Minyuan Guan Shun Tang Xinfang Zhang Songfeng Lu Shijie Cheng Yuan-Cheng Cao | 2022 | npj Computational Materials2022，，1： | 1 |
| 2 | Citric acid production by solid-state fermentation in a packed-bed reactor using Aspergillus niger显示文摘 | Minyuan Lu John D Brooks Ian S Maddox | 1997 | Enzyme and Microbial Technology1997，21，： | 1 |
| 3 | Analysis on Apparent Resistivity Variations of Garzê Station before the 2013 Lushan M_S 7. 0 Earthquake显示文摘A trend increase in apparent resistivity has been observed in the N30°E monitoring direction at Garzê Seismic Station since July 2011. This increase trend in geo-electric resistivity has been observed in the N60°W direction since 2012. During the period of the increase,the national highway No. 317 was expanded in the monitoring area,so the potential electrodes in the N30° E direction had to be moved 10 m towards the current electrodes. We interpreted the electric sounding data of Garzê Seismic Station with a horizontally layered model. Analysis based on this model showed that the shift of potential electrodes can cause a 4 Ω·m rise to the measurements in the N30°E direction. Therefore,apparent resistivity of the two directions increased in the same time in 2012 after offsetting the effects from electrodes shift. Sensitivity coefficients of the two observation directions were also obtained using the model. Sensitivity coefficients of both directions were negative for the shallow layers,which can well explain the unexpected annual variations of GarzêSeismic Station. In order to quantitatively analyze the effects from the expansion of the national highway on the observation,we constructed a finite element model based on the electrical structure. Analysis results also suggested that the expansion of the national highway could only cause a 0. 15 Ω·m decrease in the N60° W monitoring direction and0. 1Ω·m increase in the N30° E direction. Additionally,the valley values of annual variation of 2013 were distinctively higher than that of other years since 2008,meaning that there was an abnormal rise in apparent resistivity in the two observation directions at Garzê Seismic Station before the Lushan earthquake. However,the rise was contrary to the decline variation before the Wenchuan earthquake. Therefore, it is still unsure whether or not the rise variation is related to the Lushan earthquake. | Xie Tao Lu Jun Ren Yuexia Zhao Minyuan | 2014 | Earthquake Research in China2014，28，3： | 0 |
您所在的机构暂未开通此部分的功能，请联系管理员