Chapter 260: School Beauty Song is really growing up The dusk deepened, and the low buzzing of insects could be heard outside the window. The hustle and bustle of the day had completely disappeared at this time. The master bedroom was a little dark, and one could barely see a rough outline. "Whoo~" Song Yao exhaled slowly, turned sideways, and was able to see the general outline of Xu Qingzhou in the faint light. This was the second time she woke up. "This bad guy." Hearing Xu Qingzhou's steady breathing, Song Yao couldn't help but mutter something in a low voice and reached out to poke Xu Qingzhou's forehead. She was not used to it, but this guy was sleeping soundly. There was no way. With one more person on the bed, I couldn't roll around like before. I was always worried that when I woke up, I would find myself lying on top of Xu Qingzhou. She seemed unsatisfied. Song Yao thought about the two of them lying together again. In fact, she had seen through Xu Qingzhou's little tricks for a long time, but she couldn't help but be "fooled", pretending to be stupid, and fell into his trap. A little scared, so I subconsciously refused, but I also had a little expectation in my heart? Maybe it’s because I like someone and always want to be close to him.
Thinking about it, I find it funny again. I have said many times before that I won't fall in love in college. But now, in my freshman year, I ran out to share an apartment with Xu Qingzhou, and now we are even lying together. Exhaling again, Song Yao closed her eyes, and her consciousness gradually fell into chaos. The next day. Xu Qingzhou woke up at 7: in the morning. He opened his eyes and stared at the ceiling blankly for a while before he realized that he was in Song Yao's room. Memories of last night came flooding back. I slept very comfortably, enjoying the cool air-conditioning and holding soft little hands. It was wonderful. It would be even better if I could hold you while sleeping. It's the truth that the brave will die of overeating, and the timid will die of starvation. Song Yao's room was very tidy. The desk they bought became a dressing table, filled with all kinds of cosmetics, hair ties, and charging cables. On the shelf next to the wardrobe, exquisite underwear is hung. Oh~ School beauty Song is indeed growing up. The sound of washing and brushing one's teeth penetrated the wooden door and reached the ears of the person daydreaming on the bed. "get up." After expressing his feelings, Xu Qingzhou stretched and tidied the bed. With two pillows and two quilts, they already felt like an old married couple. However, it will be perfect when we are covered in the same quilt. Xu Qingzhou pushed the door open happily and saw Song Yao, wearing a hairband and brushing her teeth. "Good morning." "Well, good morning." Song Yao looked away guiltily. She was indeed impulsive and soft-hearted at night. She fell into his trap and asked him to move into her room. "Didn't you sleep well?" Xu Qingzhou saw that Song Yao had dark circles under her eyes. "What do you think?" Song Yao said hatefully. Xu Qingzhou smiled awkwardly, went to the bathroom, came out with a toothbrush in hand, pressed the button a few times, then realized that the red light was on. So he simply waited for Song Yao and borrowed her toothbrush.
After brushing her teeth, Song Yao saw Xu Qingzhou raising the toothbrush in his hand, indicating that it was out of battery, and handed her toothbrush to him. After Xu Qingzhou changed the toothbrush head, he leaned aside and watched Song Yao wash her face. "Did you call Aunt Jia?" "not yet." "I'll call later." Xu Qingzhou nodded, brushed his teeth, and said, "It's still hot in Kyoto in the summer. We really should install an air conditioner." Song Yao didn't say anything, but was cautious. Based on her understanding of her boyfriend, he would definitely stay in her room if he moved in. Why would he actively install an air conditioner and wait for her to drive him away? "After all, we can use that room as a guest bedroom. Your parents or my parents can come over and sleep there, gurgle~" Xu Qingzhou said proudly. Song Yao glanced at this shameless guy indifferently. Humph, it was just as he expected. She had seen through Xu Qingzhou a long time ago. After they finished their breakfast, they started to do their own things. Xu Qingzhou planned to visit Professor Zhao and his team in the morning to obtain the latest experimental data and adjust the model. Of course, he also wanted to see if there was any opportunity for practical experience. Only by completely making a battery yourself can you understand the process and various details. Song Yao stayed at home to review as she had an exam at 2pm. After stuffing the clothes into the washing machine, Xu Qingzhou went out. On the way, he called Aunt Jia and said that the weather was too hot and he still had to trouble Aunt Jia to install an air conditioner. Aunt Jia agreed immediately and said she would find someone to install it in the next few days. Everyone is in the optoelectronic laboratory. Wang Wei is doing data analysis in the office, while Hong Yayu and Gong Yunfei are collecting sample data in front of the instrument. Professor Zhao Shengwen looked at the latest experimental data with Xu Qingzhou. “Using LiBH4 to pre-lithiate the silicon anode, the ICE has reached , and the capacity retention rate after 100 cycles can reach , which is a big breakthrough compared to the first stage.” Xu Qingzhou looked at the data chart on the computer and nodded slightly. Professor Zhao said with a smile: "Thanks to your feedback." "Based on your last analysis results, we pre-added a certain amount of Li+ to the battery to compensate for the lithium loss caused by the formation of the SEI film destroyed by the volume effect of silicon. After several rounds of testing, it has been proven to effectively improve the first coulomb efficiency and battery life." "It's good as long as it can play a role." said Xu Qingzhou. Professor Zhao took out the hard drive from the drawer and handed it to Xu Qingzhou. "In addition to experimental data, this hard drive also contains the latest information on battery pre-lithiation technology, electrolyte additive development, and silicon-carbon composite materials. You can take it home and have a look." Xu Qingzhou thanked him, paused, and then said: "Professor, I have read a lot of information on lithium-ion batteries these days, but I haven't practiced them yet. Here..." "Practical operation? No problem." Professor Zhao thought for a moment and said directly, "We are just about to make sample No. 33 of group C. You can try it." "Thank you, Professor." The preparation of battery materials is much more dangerous than BiBQ crystals. Many raw materials are corrosive. Although the probability of explosion is relatively small, it will be very troublesome if certain solvents are splashed onto the equipment due to carelessness. The fact that Professor Zhao agreed immediately showed that he really trusted Xu Qingzhou. "You're so polite. We should thank you." Professor Zhao smiled, paused, and said, "I'll be watching from the side. If you have any questions, just ask me anytime."
"no problem." Xu Qingzhou quickly got the list of materials marked with C201570633, put on a spare white coat and goggles, and began the experiment. The modified silicon powder, conductive agent, binder, etc. are mixed in a certain proportion, an appropriate amount of solvent is added, and the mixture is fully stirred by a blender to form a uniform negative electrode slurry. Well-organized, each process is quite standard. Professor Zhao was a little surprised. They were too skilled. For example, when it came to weighing silicon nanopowder, even he couldn't guarantee that he could take out the amount marked on the raw material list in one go. So, this is genius? Drying and compacting. Assembled with the positive electrode material, that is, the positive electrode plate, the negative electrode plate and the Celgard separator have formed the basic structure of the battery cell. Next, an ethylene carbonate electrolyte solution containing lithium hexafluorophosphate was injected. (End of this chapter)