Of course, Zhang Han had heard of Lu Lao's name, but he had never kissed him with his own eyes.

Lu Zhenhua, Ph.D. in military design from MIT, is currently the deputy secretary of the Party Leadership Group of China Ordnance Equipment Group, the head of the group's strategy committee and the special products department. In 1960, he joined the work and directly participated in the design of China's 96 series tanks, when he was the chief engineer, the 95 type assault rifle was designed by him, and almost all of China's modern individual equipment, or directly or indirectly, are from his handwriting.

Later, he cooperated with China Aerospace Industry Corporation for many times, participated in the design of various types of DF missile launchers in China, and all of them designed things that meet the requirements in accordance with the requirements, won a total of 14 national awards, 6 international awards, and can be said to be a very smart person, because many designs are very advanced, but because of energy constraints, only stay on the design drawings.

What is even more convincing is that he presided over the design of the Tianjian sea, land, and air joint defense system, which is well-known in the international community, and the first batch of test products has already been installed in the first air defense regiment of the Hainan Military Region.

If you want to say that Lu Lao's descendants are idiots, no one will believe them, so it is not strange to give birth to a granddaughter with a high IQ like Lu Ningxiang, it is reasonable for her to create anything.

After hearing Zhang Han's words, Gu Lan was a little speechless in surprise, "You are actually Lu Lao's granddaughter?" ”

Lu Ningxiang nodded, "Yes, that's my grandfather." "Gu Lan must have known about the Heavenly Sword, but she didn't ask about it.

Zhang Han said, "You actually secretly took out your grandfather's things and changed them, and you were swaggering everywhere, if you were caught...... Tsk tsk. "By the way, I'm more concerned about what the hell is going on with your thing, how you solve the battery and insulation problems." ”

Chen Peng was also curious, "What is the concept of 2000kva?" With such a large power, I am afraid that it is larger than the transformer volume of this hotel, how can it be so small? ”

Zhang Han thought for a while and said, "This is not very difficult, as long as it is properly designed, it can be done, and the insulation should have a corresponding coating on the hand, but the high energy consumption brought by high power is a big problem." ”

"Smack."

Lu Ningxiang snapped her fingers, "Smart, your IQ may be a little lower than mine." ”

Zhang Han smiled helplessly, "Could it be that your grandfather has already made which one?" ”

Lu Ningxiang rolled her eyes, "You actually guessed it." ”

Seeing that others were puzzled, Zhang Han explained,

"At present, the energy density of lithium batteries is 100wh/kg to 200wh/kg."

Lu Ningxiang stretched out her little hand, and a piece of something like a bracelet appeared on her arm, black and white in color, with two metal sticks protruding and exposed, it should be a conductor, and a piece smaller than bubble gum was pulled out and displayed.

Zhang Han continued, "And the battery she uses is the latest product of China Ordnance Equipment Group, and the little Japan and the Yankees have not mastered the high-energy graphene battery." ”

Liuzi scratched the back of his head, "What is graphene?" ”

Zhang Han explained,

"Graphene is a new material with a single-layer sheet structure composed of carbon atoms, which is a hexagonal honeycomb lattice-like film composed of carbon atoms in some complex form. To put it simply, it is a two-dimensional nanomaterial that is only one carbon atom thick.

Graphene is the thinnest but hardest material in the world, the same element as diamond, its structure is extremely stable, the thermal conductivity is extremely high, the resistivity is extremely low, and the electron migration rate is extremely fast, so it can be said to be the most ideal two-dimensional nanomaterial at present.

The magic of this kind of battery is that it charges and discharges 100-1000 times faster than conventional batteries. ”

Everyone who listened to such a bunch of stiff words was confused, especially Gu Lan, who shook his head vigorously,

"We don't understand what you said about atoms, graphite, and resistance, but since there is such a thing, and it can be used, why have we never seen it?"

Zhang Han lit a cigarette, took a breath and said with a smile, "This is where it is embarrassing, first and foremost, I heard that there are many scientific research teams abroad doing this, but there is no breakthrough, I didn't expect our Celestial Empire to have made it." ”

Yang Xu said, "Yes! A few years ago, I heard that the University of California in the United States and a private institution in Germany were doing this, but there was no progress, and we were approached by an employer who wanted to pay a lot of money to get information on these technologies. ”

Zhang Han leaned on the sofa and thought for a while, "Whoever controls energy will control the future, how can no one fight its idea." ”

"What about the second reason? Say it quickly, say it quickly. Gu Lan seemed to be quite interested in this matter.

Zhang Han smiled and asked, "How much is a gram of gold now?" ”

"Four or five hundred, I don't pay much attention to that thing, what's wrong?"

Zhang Han stretched out three fingers, "Graphene in good condition can be sold for three thousand dollars a gram, and it is still in short supply, do you understand now?" ”

"Ahh Gu Lan was stunned, looking at the fast black bubble gum in Lu Ningxiang's hand, there must be at least seven or eight grams, with a total value of 24,000 US dollars, and the RMB is nearly 300,000!

Zhang Han smiled more obviously, "This is also one of the problems that graphene batteries have been staying in the laboratory stage, it is too expensive, who would be so tyrant to take more than 300,000 yuan as a battery, with that money, it is better to hire two people to carry a generator and the back of the butt is cheaper." ”

Lu Ningxiang put the battery back, and when the ten fingers were spread out and brought together, the electric blade of more than forty centimeters made a sharp and piercing sound, and the high-brightness and strong light could blind people's eyes.

"Auntie, more than 300,000 yuan, hurry up and put it away."

Lu Ningxiang was very unhappy and put away the electric blade, Zhang Han asked,

"How did you end up here?" Then he looked at Li Le, "And you, why did you come over." ”

Cherry sighed deeply, "You know, I'm already an adult, but my family still controls me so strictly, I'm going crazy." Saying this, he grabbed his hair with his hand, and his eyes were full of despair.

"It's all your bad idea!"

Zhang Han was stunned, "It's my business." ”

Lu Ningxiang snorted, "Last time in Hainan, you said that I would join the army, but I really went, and I was directly assigned to the China Ordnance Equipment Group Corporation, and I was dealing with those instruments and drawings all day long, and I couldn't see the sun all day, is that where people stay?" ”

Zhang Han smiled bitterly, "I said that you are still not satisfied, how many people have broken their heads and have to drill into the head office, and you are not happy to stay when you go in." ”

After speaking, he looked at Li Le, Li Le said, "Of course I came to find you, I heard Feng Jin say that you are gone, and I don't know what happened, in short, you don't want to leave me behind in the future, I will follow you wherever you go!" ”