High-capacity embedded compound A

High-capacity embedded compound A

High-capacity embedded in the compound in the development of lithium ion battery

South lithium Fourth (International) Senior Technology Forum today in Shenzhen Convention and Exhibition Center. The General Assembly, "Power 2009 - Power Battery, 3G high-capacity battery, netbook battery" is the theme of hundreds from across the lithium industry experts, corporate executives attended the forum and how to deal with the financial crisis lithium industry and explore new markets, new opportunities, grasp the development trend of the industry and discuss hot.

The following is the macro Sanyo Dr. Nakamura speech text Record:

Moderator: Mr. Xie Xieyang! Have requested the next company over Sanyo, Dr. Nakamura macro.

Nakamura Wang: Thank you very much for inviting me to participate in this forum, I am very honored to be able to participate in the forum. Today I will tell you about what some of our basic research, research on the two materials, the two studies can be at a higher structural stability of the potential to improve the capacity of anode materials. The first is the anode material of lithium-rich, and the second is obtained through the exchange of sodium layer of the anode material states. (PPT)

First, let me first briefly introduce the background of our study, lithium batteries on the market is basically to do with the lithium cobalt oxide anodes with graphite cathode, which is the question of how to to improve the current system of lithium cobalt oxide The capacity of lithium batteries, or even more than the current capacity. We all know, the capacity of graphite which is close to his capacity, and one way is to find a new cathode materials can give us a higher capacity, such as aluminum cathode. Another is to increase the capacity of the anode, and today I want from the second level is to increase the capacity of anode materials in terms of this problem.

PPT summed up what this energy density, energy density is calculated as the average potential of the product capacity × × actual density, can be charged to a higher potential, in fact, this method is to increase the number of lithium cobalt oxide and other materials or MCL and the capacity to improve his energy density. From this number which we can see his potential as a charge to a higher one way to increase the density of them.

I share with these data obtained using the three main channels of the test battery electrode experiments obtained, in addition to this experimental film of aluminum air battery, it's normal capacity is 600-800 mAh. I'm with you first to introduce lithium-rich anode material, can use this formula to write about, you can use some transition metal parts, this is a very typical formula, often marked with a ICM material, the characteristics of this material is his capacity is relatively high, the time to over 200 mA per gram, can reduce the amount of cobalt, so you can reduce costs. The lithium-rich material can be said that many researchers have been numerous studies, some people in office, this is a reference to the papers, many of the data from this paper. Wei Boshi in the last race could have also participated in the meeting, but also to speak. This is the characteristics of lithium-rich materials, phone, black is the first cycle, the red is the second cycle, the capacity is relatively large, is 270 mA per gram, the initial charge and discharge efficiency is relatively high, this situation The following is about 83%. Another feature we can see that there are very different, that is, in the first cycle and second cycle of the curve being a great difference. The slide in the literature which explains the possible mechanism of charge and discharge, in terms of this capacity for this material comes from traditional methods of oxidation, the oxidation of this lithium-rich material, 4.4V when the oxygen by oxidation, materials which release oxygen, manganese will be captured. After the first discharge, the capacity to connect through this oxidation reduction reaction, that is, for this transition metal redox reactions, this layered manganese oxide by this structural change, we can see has been such a material.

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PV market demand drop

PV market demand drop

Since the 4th quarter of 2008, the drop of solar energy demand, increased pressure on the stock battery manufacturers both sides, because the capital needs of low-priced sales, the market came part of the international contract customers can also change the pickup module approach has signed contracts required suppliers offer, allow suppliers to draw the circle first, some fighting, then select the lowest purchase, solar energy companies, said 1st quarter 2009 if demand remains in the doldrums, I'm afraid to increase the probability of such violations will follow heightening .

Since the 4th quarter of 2008, demand for solar PV market frozen, leaving both sides a rapid increase in solar cell factory inventory levels, to address the problem of funding needs and inventory pressures, grab a single action to kill because of lack of funds and the stock pressure, to the not yet completely subsided.

Since 2008, the contracts signed years, more non-rigid restrictions, including price, delivery quantity, delivery time and so not very hard and fast rules, coupled with the rapid changes in market conditions, supply chain market rapidly from a seller to a buyer Therefore, some international purchases module plant began to change strategy.

These modules one by one supplier factories require the contract offer before a contract supplier to bargain with each other about it, and then select the lowest bid contract supplier of the goods, the contract market but has become the fastest battlefield bargain, the other unsuccessful suppliers stocking according to the contract, but ended up shipping nowhere, but increased the pressure on stocks.

Solar energy companies, said the situation reflects the number of contracts enforceable not been apparent in 2009, although the contract customers are willing to set a significant reduction relative to 2008, but there is still a significant proportion of international companies in order to ensure stable supply, signed a supply contract .

Urban conditions in 2009 but the uncertain spot price of the contract price may still be threatened, especially off-season when the first one end of the quarter end, as expected if the market's reversal, the current prices remain stable longer fear the threat, the same, contract enforcement and binding will be challenged again, the above situation may result from spreading.

Solar cell manufacturers, said the situation in the 4th quarter of 2008, the battery increasingly evident since the start price, but after all still a small number of customers, so, many battery manufacturers shall be set in 2009, the contract will be more to enhance communication between buyers and sellers, period can provide customers a reasonable price and stable material source.

Continental battery manufacturers, including Suntech, Solarfun, China Sunergy, crystal and Australia, Taiwan solar cell makers, including Motech, E-TON, the new sun, Yu Jing, Sun Branch, Wang can wait; both sides offer similar trend, each about 2 to 2.4 watts of dollars, of which the market believes that a single force service providers to the mainland than to Taiwan-based factory fierce.

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Battery is the mobile Internet of the "shortcomings"

Battery is the mobile Internet of the "shortcomings"

As of the end of June, 253 million Internet users in China, mobile phone users wireless access to the terminal has reached 7305 million, accounting for Jinsan Cheng. Characteristics of mobile phone users showed younger - 30 years of age accounted for 86%. Experts said that from a technical level, the phone will eventually replace the Internet as the most important communication tool has become pronounced signs (November 24, 2008 "People's Daily").

Experts say signs of mobile phone will eventually replace the Internet has "highlighted" a little exaggerated, not to mention mobile Internet "short board" battery problem is not fundamentally resolved.

Currently, the mobile phone to replace the Internet as the most important tool is also very slim prospect. Mobile phone than a computer keyboard to input Chinese characters to input Chinese characters for its slow, almost can not compare. Mobile phone screen is too small to see if the image is a mean, wide-screen with the computer effects are not in the same language. Even if the solution of the mobile Internet is slow and the cost of your problems, mobile phone, compared with the computer, but also a "dwarf."

"Three as" mobile phone users this figure, I am afraid of water too much, because the definition of mobile phone users are too "loose." What is mobile phone users? Do all cell phones are occasional short-term mobile phone users who get online it? If this is the standard, then I am afraid that mobile phone users to account for 80% of the total number of mobile phone users over.

Mobile Internet users with computer users should at least consistent with the standards, such as regular Internet users with a longer time and as a general understanding of information channels. Now, with the mobile Internet, but the road to keep abreast of important information about their own interest only, online time is very short stay, and a return home, conditional on the computer to the Internet.

Currently, the mobile Internet of the "short board" is the cell phone battery life too short. A battery, for routine calls, generally only use two or three days; long talk, I am afraid that one day is not enough. There are a few so-called high-capacity battery, although the manufacturers marked exaggeration, but the continued use of the time more than where to go. If, as the computer a few hours as a continuous Internet access, cell phone batteries do that?

As the 3G era, the wireless transmission technology produces a qualitative leap in mobile phone technology will be closer to the same level of the computer. However, if the phone battery does not solve the "short board" problem, then the most advanced mobile phone technology will become a "decoration." Finally, the mobile phone battery mobile phone with the times to become the biggest "bottleneck."

In fact, many new tricks on the current mobile phone for most users are "display"; users to spend higher price mobile phone, a user of funds and a serious waste of social resources. Thus, the present should spend more time to spend more funding for research on mobile phone battery capacity increases, increasing phone battery life and safety issues, so as to truly gradual reduction of the gap between mobile phone with the computer.

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