Lead flow battery

Abstract

The invention discloses a lead flow battery. The lead flow battery comprises a positive electrode plate, a negative electrode plate and a Pb<2+>-containing electrolyte; the positive electrode plate comprises a conductive plate and a positive electrode active layer compounded to one side of the conductive plate; the negative electrode plate comprises a conductive plate and a negative electrode active layer compounded to one side of the conductive plate; the Pb<2+>-containing electrolyte flows through the positive electrode active layer and the negative electrode active layer to be subjected toan electrochemical reaction to form potential difference; the positive electrode active layer comprises a titanium mesh and a tin antimony oxide coating layer arranged on the surface of the titanium mesh; and the tin antimony oxide is a mixture of SnO<2> and Sb<2>O<3>. By virtue of the lead flow battery, the problem of battery short circuit caused by negative electrode Pb dendritic crystal growthand weak binding force and severe fall off of PbO<2> and the positive electrode material can be solved; and the flow battery disclosed in the invention has the advantages of simple assembling, convenient operation, high voltage, space saving and the like, and can be widely applied to the fields of electric power energy storage, a power supply of a carrying tool and the like.

Description

technical field [0001] The invention belongs to the technical field of energy storage, and in particular relates to a lead methanesulfonate flow battery. Background technique [0002] Redox flow battery is a kind of energy storage device that has emerged in recent years. It has attracted much attention because of its long working life, fast charge and discharge, and high conversion efficiency. Moreover, the power and capacity of the flow battery can be designed independently. The power of the battery depends on the effective area of ​​the electrodes and the number of electrodes; the capacity of the battery depends on the amount of deposits on the positive and negative electrodes. The longer the charging time, the more deposits The larger the capacity of the battery. Redox flow batteries have broad application prospects in balancing the day-night peak difference of the power grid and peak-shaving and valley-filling. At the same time, as a supporting energy storage device fo...

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art, provide a lead flow battery, and solve the problem of short-circuit of the battery caused by the growth of Pb dendrites at the negative electrode and the problem of PbO in the prior art. 2 The problem of weak bonding with the positive electrode material and severe shedding

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