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How to measure the electrochemistry of biocarbon

2026-09-26 16:31
2026-09-26 20:59

At present, the determination of the electron loss and gain ability of biocharcoal mainly relied on traditional chemical methods and electrochemistry methods. The traditional chemical method was to incubate the biocharcoal with a chemical oxidiser or a reducing agent. For example, the iron ions with a high oxido-reduction potential were used as the oxidiser, and the hydrogen with a low oxido-reduction potential was used as the reducing agent. Then, the concentration of the reduced iron ions was determined by a chromometer or the concentration of the hydrogen in the system was determined by gas chrommatography, so as to determine the electron loss ability and electron gain ability of the substance. However, this method required the chemical reagents to be incubated with the biocharcoal for several days to ensure that the fermentation or reduction reaction was complete. There were problems such as long testing time, cumbersome operation, and indirect determination relying on the chemical reagents. The electrochemistry method was to establish a three-pole system including a working pole, a counter pole, and a reference pole in an electrolyser, change the potential of the working pole through an electrochemistry workstation, and record the current signal of the electrochemistry reaction on the surface of the working pole. When the working voltage was set to high, the electron loss ability of the biocarbon could be measured. When the working voltage was set to low, the electron gain ability of the biocarbon could be measured. Through the integration of the electric current, the electric charge of the biocarbon was obtained, and then the ability of the biocarbon to gain and lose electrons was determined. However, the surface area of the working pole used in the conventional electrochemistry method was small (only 3mm in diameter), which limited the electron transfer process between the biocarbon and the surface of the pole. As a result, the electrochemistry workstation could only capture weak electrochemistry signals, and the reaction process was long. When the current of the electrochemistry reaction was weak, it was difficult to accurately integrate the current of the electrochemistry reaction, and it was difficult to accurately determine the ability of the biocarbon to gain and lose electrons. Read more exciting novels for free

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