HP Laptop Battery Super Blog Here

1, lead battery acid generation of electromotive force:

● lead acid battery charging, the positive plate is lead dioxide (PbO2) in sulfuric acid solution under the action of water molecules, a small quantity of lead dioxide and water generates dissociation of unstable substances – lead hydroxide (Pb (OH) 4), hydroxide ions in solution, ions lead (Pb) remain in the positive plate, so the lack of positive results on the electronic board. .

● lead acid Dell FK890 battery charging, the negative plates of lead (Pb), and the electrolyte of sulfuric acid (H2SO4) react to become lead ions (Pb 2), transfer of lead ions to

Electrolyte, the cathode board leaving excess

Both e-(2e).

● Thus, even when not connected to external circuit (battery

Open), due to a chemical reaction, positive plate

On the lack of electronics, a very fu on the electronic board redundant

As seen on the right, the bipolar plate, seen rising

A certain potential difference, which is battery

Momentum.

2, lead acid batteries during discharge of the electro-chemical reaction

● Lead acid batteries discharge when the potential difference in the hp Pavilion dv6 battery under the influence of a negative amount on board electronic form through the load in the positive plate current I. At the same time a chemical reaction in the battery.

● Each negative plate of lead atoms emit two electronics, the generation of lead ions (Pb 2) and the electrolyte in the sulfate ion (SO4 ֿ ²) reaction in a very on-board generation Lead insoluble in sulfuric acid (PbSO 4).

● positive plate of lead ions (Pb 4) obtained from the negative of the two electrons (2e), the lead ions in divalent (Pb 2) and the electrolyte in the sulfate ion (SO4 ֿ ²) reaction in the very edge to generate insoluble lead sulfate (PbSO 4). Hydrolysis of a positive plate of oxygen ions (O ֿ ²) electrolyte and hydrogen ion (H) reaction to form a stable material and water.

● electrolyte exist in sulfate ions and hydrogen ions in the evolution of the electric field under the action of the battery positive and negative, respectively, formed within the battery current, the formation of the whole loop , batteries continue to discharge outdoors.

● landfill reducing the concentration of H2SO4 is sulfuric acid on lead electrode negative (PbSO 4) increased resistance increased internal toshiba PA3591U-1BRS battery (non-conductive lead sulfate), concentration of electrolyte decreased the battery EMF reduction .

● chemical reaction equation is:

Cathode active material cathode material anode electrolyte active negative result resultant resultant electrolyte

↓ ↓ ↓ ↓ ↓ ↓

PbO2 2H2SO4 Pb → PbSO 4 2H2O PbSO4

Lead oxide sulfate sulfuric acid Lead acid Lead

3, the lead acid battery charging process of electro-chemical reaction

● prosecution should have run off in the external power supply (charging rectifiers or pole) so that positive and negative plates in the discharge of substances released after restoring the original active substance, and the power of the outside world storage of chemical energy.

● In the positive plate in the current role of the outside world under the lead sulfate is dissociated in divalent lead ions (Pb 2) and sulfate anion (SO4-2) external power supply due to continuous positive lessons electronics then the positive plate in the vicinity of free divalent lead ions (Pb 2) continue to release two electrons added by tetravalent lead apple PowerBook G4 15 inch battery ions (Pb 4), and with water to continue to meet and, ultimately, the board has generated a very positive lead dioxide (PbO2).

● In the negative, the current role of the outside world under the lead sulfate is dissociated in divalent lead ions (Pb 2) and sulfate anion (SO4 ~ ²), because of the constant access to negative power electronics from the outside, then the negative near the free divalent lead ions (Pb 2) has been in and lead (Pb), and velvets, as wireless is set to negative.

● electrolyte, cathode continuous generation of hydrogen ions (H) and sulphate (SO4 ~ ²), produced a constant negative sulfate ions (SO4 ~ ²), under the influence of the electric field, hydrogen ions move to cathode, sulfuric acid ions move toward the cathode to form a current.

● late charge under the influence of the external current solution in the reaction of water electrolysis will occur.

● chemical reaction equation is:

Material of cathode and anode and cathode electrolyte electrolytes resulting resulting resulting negative

PbSO4 2H2O → PbSO 4 Pb PbO2 2H2SO4

Lead sulphate, lead sulphate lead sulphate lead oxide

4, after loading / unloading lead-acid electrolyte in the battery changes

● From the above we can see that discharge lead acid batteries, the electrolyte of sulfuric acid in steady decline in water gradually increased, the solution has decreased.

● From the above we can see that the lead-acid battery charging, increasing the electrolyte of sulfuric acid, water, decreased the proportion of increase of the solution.

● practical work, you can change depending on the proportion of electrolyte to determine the extent of lead-acid battery charging ..

Experts predict that called ISP (FluoroSulfonylImide) of the TFSI anion is known to be a substitute material. This equipment and TFSI is different from the right and left with the non-CF3, but F. CF3 F ratio smaller, thus reducing the overall size. As mentioned above, small ions, the charge density will be larger, easier to form crystals, but the magnitude of the size of ions, most of the viscosity the easier it is to reduce the effect best. The reason is that the ionic liquid through the ionic liquid itself, the performance of the viscous resistance of promoting the charge.

Above have been saying that the negative ions, in fact, positive ions are also a number of options. For example, you can use the name EMI (1-ethyl-3-methylimidazolium) substances. In the melting point is concerned, the use of salt TFSI -18 ℃, the use of salt as a ISP -12.9 ℃, the practical application there are no major differences. The viscosity at 25 ℃ different ISPs 32.6mPa • s • s 17.9mPa until reduced by about half. In addition, ISPs in the electrolyte, the ionic conductivity reflect the performance of 9.1mS/cm increased 16.5mS/cm, has raised almost doubled. These indicators, but not as an organic solvent widely used at present, but belong to the same level of organic solvent. In this way, ISPs should be applied to the Dell FK890 battery.

In practice, the battery experiences of First Instance has achieved unexpected results: FSI and TFSI different, is not detrimental to the anode. The TFSI, there will be damage to the battery anode serious problems. And for reasons unknown.

Although still in the evaluation of the implementation stage, but not the anode corrosion, at least the performance of basic operation was confirmed. That any “rich” (Kansai University, Ishikawa), so that future performance will be constantly improved.

Make all the technology of solid coating particles, the battery

The second way to leave the organic solvent is the set of cells in the solid state. Original positive and negative is strong, then simply become a solid electrolyte can be. Osaka Prefecture University has studied the use of the class of sulphides all batteries, the solid electrolyte. For example, heating Li2S-P2S5 crystal glass after battery class, its conductivity at room temperature for more than 10-3S/cm reached. Has been achieved with the current use of the same level as the liquid electrolyte. In addition, the conductivity also increases in May are forecast to have reached a “seven times” the objective “dark horse”.

Osaka Prefecture University in April 2009, published jointly with the Toyota battery technology for all-solid coating particles. All semiconductor state thin film lithium battery type and accumulation-type. To use the car, the capacity is the decisive factor, if the University of Osaka Prefecture may improve the ability of the accumulation type launched a vigorous development. Specific approach of the negative active material, the cathode active material and solid electrolyte particles composed of three samples, respectively, according to the levels of bias of the Dell GD761 battery law is gradually changing the mixing ratio, mixing and overlapping.

The difficulty lies in the method of grain contact resistance limit. This case, if the central government of the liquid electrolyte can be used “phenomenon” wet to ensure solid contact and liquid. While the differences between solids, micro-view of a single contact. In response, industry has been taken to put pressure on the deformation of tiny particles occurs as a means to increase the contact surface of the evolution of ideas.

Osaka Prefecture University was chosen as a starting point in another direction, by the use of solid electrolyte thin film coating of electrode active material particles on the surface to reduce contact resistance. Electrode active material LiCoO2 used (cobalt oxide, lithium), the VGP-BPS9A solid electrolyte Li2S used P2S5 types of material particles coated with PLD (filing of pulsed laser ablation) method.

PLD is one of the methods of thin film deposition. Objective is to use laser ablation, so the target material sputtered thin film formed on the bottom. Here, the practice is located in the above objective, located in the lower floor. Side of the floor vibrating, so the particle flux LiCoO2, hand, and the solid electrolyte particles are deposited on the surface to form a thin film. The particles are made from ALL-strong unit and the use of coated particles avoiding manufacturing time compared to a larger unit capacity. Confirmed the effectiveness of coated particles, so that all semiconductor sony VGP-BPS2A battery state practice, a major breakthrough.