How does water decomposition occur in valve-regulated batteries? Are stable, balanced valve-regulated 6F22 carbon batteryyet to be realized?

　　The source of charged hydrogen is typically overcharging and/or electrolysis. Charged hydrogen is not hydrogen gas, but is in the form of ions and electrons.

　　After the valve-controlled battery is fully charged, water decomposes at the anode and is divided into three parts:

　　Part 1: Oxygen (O2) that diffuses into the atmosphere Part 2: Hydrogen ions (H+) that diffuse into the battery fluid Part 3: Electrons flowing in the circuit For flooded batteries, oxygen ( O2) escapes from the battery. It is precisely because of the escape of oxygen that charged hydrogen (in the form of ions and electrons) enters the negative electrode freely. As a result, it combines into hydrogen gas on the negative electrode and charges the negative electrode at the same time. At this time, the negative electrode is only polarized. , little or no depolarization.

　　For valve-controlled batteries, the situation is different. Oxygen will not escape from the battery, but oxygen, hydrogen ions, and electrons will recombine into water at the negative electrode. At this time, the negative electrode will have both polarization and depolarization (oxygen recombination). ). At this time, the negative electrode only pretends to be a source of charged hydrogen.

　　When the oxygen recombination efficiency reaches 100% inside the valve-controlled battery, the charged hydrogen (ionic form and electrons) from the electrolyte tends to be exhausted. At this time, what is relied on to keep the negative electrode charged? It is not difficult to answer this question. This is because there is another source of charged hydrogen, which is the corrosion of the anode grid. Corrosion of the anode grid absorbs oxygen from the water and releases a corresponding amount of charged hydrogen (in ion form and electrons), which migrates to the negative electrode and helps to charge the negative electrode.

　　In this proven valve-regulated battery, the negative electrode is truly a useful source of charged hydrogen. However, this source of charged hydrogen depends mainly on the corrosion rate of the anode grid.

　　The electrons on the external circuit are not shown, but it is clear that the form of the hydrogen ion flow is always opposite and equal to the electron flow. Judging from the above statements, the concept of a balanced battery is that the negative electrode is neither polarized nor discharged. This is an ideal valve-controlled battery. The internal gas reaction efficiency of a mature valve-controlled battery is 100%, and it will not affect the hydrogen balance of the battery. It is a form of reversible electrolysis, only the positive electrode is charged (polarized), and the negative electrode is depolarized. Oxygen circulation is the key to sealing, but the depolarization (chemical discharge) of the negative electrode by oxygen will greatly change the hydrogen evolution potential of the negative electrode, greatly accelerate the corrosion of the positive electrode grid, serious water loss in the battery, electrohydraulic dry hydrogen evolution and positive grid corrosion reaching Balance, this comes to balancing the battery.

　　The valve-controlled battery has a catalytic device: H2 produced by the local reaction at the negative electrode and O2 precipitated by corrosion of the positive electrode grid are synthesized into water in the catalytic device and returned to the battery. The direct catalysis of H2 into water can greatly reduce water consumption, and O2 from the positive electrode can be directly catalyzed into water without recombination through the negative electrode. This reduces the depolarization of the negative electrode and reduces the potential of the positive electrode, thus Reduce positive grid corrosion and oxygen precipitation.

　　The valve-controlled battery with a catalytic device is theoretically a truly long-life design. This is because there is both a water cycle for cathode oxygen recombination and a water cycle for catalytic direct hydrogenation, thereby greatly reducing water consumption and making it difficult for the battery to Drying phenomenon. If combined with the use of special corrosion-resistant alloys and the application of a low self-discharge rate formula for the negative electrode, a truly long-life valve-regulated battery can be realized.

　　The catalytic device is used to correct the imbalance within the valve-controlled battery. Hydrogen and oxygen can be directly catalyzed into water, and can also poach oxygen from the oxygen cycle, so that the uncombined charged hydrogen (in the form of electrons and ions) reaches the polarized negative electrode. It is estimated that about 5% of the oxygen from the oxygen cycle is consumed through the catalyst. The better the battery, the less oxygen from the oxygen cycle.

　　Catalytic devices can remove some excess oxygen. Repair battery. Make it completely balanced and reduce negative electrode chemical discharge (oxygen recombination). The catalytic devices used in valve-regulated 6F22 carbon batterygenerate much less heat than the catalytic plugs in flooded batteries. Usually flooded 6F22 carbon batteryare generally 50W/unit, which will damage the catalyst in the catalytic plug; valve-controlled 6F22 carbon batteryuse a catalytic device, which generates only a fraction of W/unit, and the heat will not damage the catalytic device. The space inside the valve-controlled battery is drier than that of the flooded battery, which is beneficial to the long-term effectiveness of the catalyst in the catalytic device.

　　The catalytic device of the valve-controlled battery is known as a balancer, which allows the valve-controlled battery to have a balanced design, which can truly cure the sick valve-controlled battery and achieve a long-life design.

　　If a long-life, stable, balanced valve-regulated battery has not been possible before, the application of a catalytic device becomes very attractive. In order to achieve long service life of valve-controlled 6F22 carbon batteryin high-temperature environments, the application of catalytic devices is particularly important. The next step is how to design a catalytic device suitable for use in valve-controlled batteries. Due to the length of the article, the structural design of the catalytic device will be introduced in the next article, and experts in the field will be consulted to improve it.

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