代写MATE7016: Materials for Energy Conversion and Storage代写数据结构语言程序

MATE7016: Materials for Energy Conversion and Storage

Introduction. (3 marks)

In  the  introduction  or  background,  student  should  clearly  write  the  purpose  of  the experiment, the real-life  applications  of Li-ion batteries, how  Li-ion batteries works, equations (if needed), challenges faced by commercial Li-ion batteries, how advanced Li- ion battery anodes may solve these problems (350 words).

Methods. (4 marks)

Student should briefly write the steps involved in the scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDS) characterisations, manufacturing of the Li-ion coin cells, and the electrochemical measurements (with parameters) of the coin cells. Include the purpose of using these methods whenever appropriate. (Passive form) (300 words).

Results. (4 marks)

The loading weight* of the two electrodes shall be calculated. Students need to include the following figures obtained from the experiment for the two electrodes: 1a) SEM image of the graphite electrode,  1b)  SEM image of the Cu6 Sn5   electrode,  1c) EDS mapping  of graphite  electrode,  1d)  EDS  mapping  of Cu6 Sn5    electrode  along  with  Table  1)  EDS quantitative  analysis  results.  Students  shall  also  plot  the  results  generated  in  the electrochemical characterisation: 2a) voltage (V) vs. capacity (mAh); 2b) voltage (V) vs. gravimetric capacity (mAh g-1). The plots can be generated using excel or origin software.

Example:

Analysis and Discussion. (4 marks)

Students  should discuss the morphologies  and particle  sizes  of the two  electrodes as observed  in Figure  1a  and  b.  The  chemical  compositions  of each  electrode  shall  be determined by the EDS results in Figure 1c and d and Table 1. Students need to carefully identify the discharge voltage plateaus of each electrode from figure 2a, and evaluate the data  with  existing  literature.  From  Figure  2b,  students  should  report  the  specific gravimetric of the two electrodes, and compare these values with existing literature.

Conclusion. (2 marks)

Brief description of the purpose of the experiment, findings, and analysis. Need to write any shortcomings of the experiments and potential application of this experiment for research and industry.

References. (1 mark)

Relevant references, cited in the correct format in the text and reference list.

Written communication. (2 marks)

Clear, concise and logical writing style.

*Loading weight  is the weight  of the active material  deposited  onto  the  Cu  current collector. In the case of Cu6 Sn5, the loading weight is the difference between the mass of the electrode and the mass of the bare Cu foil; while in the case of the Gr electrode, only 90% of this mass is Gr and so the loading weight of Gr shall be calculated accordingly.