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Estimation of the state of charge of a positive electrolyte solution of a working redox flow battery cell without using any reference electrode
Estimation of the state of charge of a positive electrolyte solution of a working redox flow battery cell without using any reference electrode
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机译:在不使用任何参比电极的情况下估算正常工作的氧化还原液流电池单元的正电解液的电荷状态
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摘要
A Method and device for measurement is disclosed in operation, an undivided cell sensor immersed at any desirable point of the positive electrolyte circuit is constantly supplied at a controlled fixed DC bias voltage between the positive metal electrode and the porous carbon counter-electrode by an appropriate voltage regulator of adequate power capability, or cyclically at two or more different voltages, all within a range that includes the region between 0.35V and 0.45V, measuring simultaneously the current flowing across the undivided cell sensor at the fixed voltage or voltages bias. By correlating the paired voltage and current values, using a look up table compiled at calibration, estimated values of the degree of oxidation or state of charge of the redox ion couple of the positive electrolyte solution are produced.
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