Chapter 307

"Linlin, what's the matter? You're not feeling well? I'll ask the teacher for leave Beside him, a handsome boy asked gently.

His name is Chu Tianyu. He is the monitor of class 3 of inorganic materials in Yanjing University.

"Thank you, monitor. I'm all right, just a little cold." The girl laughed and shook her head.

"Then I'll pour you hot water." It seemed that he was worried about the girl's refusal. Chu Tianyu quickly added a sentence at the back: "don't refuse."

"Well, thank you, monitor." The girl hesitated and didn't refuse.

"All said, don't call me monitor, just call me by my name or Tianyu." Chu Tianyu said with a smile.

"All right, monitor." The girl nodded.

“……” Chu Tianyu frowned imperceptibly. Then he got up and went to the water dispenser at the end of the classroom.

"Wow! Tianyu is pouring water for Peng Linlin again. I really envy him. "

"I don't know how Peng Linlin's brain grows. How can such a handsome man with such a high price not look up to it?"

"Who knows? Maybe they are proud of themselves. "

"That's what I said..."

In the eyes of all the girls, Chu Tianyu came to Peng Linlin with a cup of boiling water.

"Be careful with the heat."

The smile is gentle, like a spring breeze.

"Wow."

A burst of jealousy sounds, many girls, have fainted in the past.

"Thank you." Peng Linlin smiles, takes the water cup and puts it on the table, but Peng Linlin doesn't mean to drink water at all.

Seeing this, Chu Tianyu's eyes narrowed, and a trace of displeasure flashed between his eyebrows. He said with a soft smile, "Linlin, in the early stage of a cold, you should drink more hot water."

"I'm not thirsty now." Peng Linlin said without expression.

“……” At this moment, Chu Tianyu was black and blue.

"Do you have any questions about lithium battery technology?" At this time, the lecturer suddenly asked questions.

"Yes!" Peng Linlin stood up: "how to ensure that the" isolation film "will not break in the process of battery charging and discharging

Lithium battery, one of the most widely used batteries, is composed of positive and negative electrodes and electrolyte. In the process of charge discharge,

will form a solid electrolyte mask on the positive and negative electrodes, so as to isolate the electrolyte and maintain the normal operation of the battery.

If this film breaks, additional chemical reactions will occur and the battery life will be consumed.

"It's a pity that the teacher can't answer you."

"Because in terms of the current technology, we can't guarantee that it won't break."

"It's only a matter of time before the electrodes break through the diaphragm." The teacher said helplessly.

It's not just him, it's a common problem all over the world!

"There's no way it can be done once and for all?" Peng Linlin asked.

"Although there is no once and for all solution, but we can use a variety of materials to extend the life of the battery!"

"It can't be done once and for all, but it can be done for 4.5 years."

"This is the meaning of our inorganic materials science." The teacher said with a smile.

"No way?" Peng Linlin asked without hesitation.

How? In fact, it is not without.

The teacher pondered for a while and said slowly, "you should know graphene, don't you?"

"Teacher, are you talking about materials that are more expensive than gold?" A student asked.

"Yes

"Graphene battery technology is being tackled all over the world."

"Over time, if the graphene battery can come out smoothly, it will no longer be a dream once and for all."