Complex sentence: However, the pH value of the electrolyte is ideally about 7 (neutral); and measurements carried out as early as the 1970s have shown that leakage current is increased, due to chemically induced defects, when the pH value deviates from this ideal value.
Split into simpler sentences: However, the pH value of the electrolyte is ideally about 7 (neutral). Measurements of leakage current, which were carried out as early as the 1970s have shown that the leakage current is increased due to chemically induced defects when the pH value deviates from this ideal value.