Method of preparing ion blocking electrode battery for measuring electronic conduction
An ion blocking and battery technology, applied in the direction of measuring resistance/reactance/impedance, measuring electrical variables, measuring devices, etc., can solve problems such as large errors, difficulty in blocking electrodes, and difficulty in solving oxygen leakage problems
An ion blocking and battery technology, applied in the direction of measuring resistance/reactance/impedance, measuring electrical variables, measuring devices, etc., can solve problems such as large errors, difficulty in blocking electrodes, and difficulty in solving oxygen leakage problems
CN101435835AInactive Publication Date: 2009-05-20SHANGHAI UNIV
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[0033] Now the specific embodiment of the present invention is described below:
[0034] The steps of the ion-blocking electrode battery preparation method for measuring pure ion conductor solid electrolyte YSZ (yttria-stabilized zirconia) in the present embodiment are as follows:
[0035] (1) Press and sinter the powder of the solid electrolyte material YSZ to be tested into a length of L=0.1cm, S=0.64cm 2 The columnar disc-shaped sample has a relative density greater than 95%. The contact surface of YSZ end face should be ground and polished.
[0036] (2) Pretreatment of electroless Ni plating samples: the above YSZ discs were placed in concentrated HF and concentrated H 2 SO 4 In the composed roughening solution, the roughening solution is 30ml concentrated HF and 10ml concentrated H 2 SO 4 mixed solution; keep the temperature at 70°C for 30 minutes; take out the YSZ disc, wash it with ultrasonic waves for 10-15 minutes, dry it, and then place it in a SnCl 2 , HCl and...
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Abstract
The invention relates to a method for preparing an ion blocked electrode battery for measuring the electron conductivity of a solid electrolyte material, which can be used for the research and representation of the electrical performance of an ionic conduction material and belongs to the field of detecting the electrical performance of functional ceramics. The invention provides a novel method for preparing the ion blocked electrode battery, that is, the method utilizes the property of high melting point of metal nickel, combines a chemical nickel plating method, solves the problem of the combination between nickel as a metal material and a ceramic material (such as a YSZ solid electrolyte material) and utilizes the electroplating method to solve the problem that the metal nickel of the ion blocked electrode material is loose and porous, thereby forming a dense ion blocked electrode which is tightly combined with a substrate material and has no oxygen leaking gap. Based on the principle of a Hebb-Wagner polarization method, the electron conductivity of an ionic conductor material at high temperature is measured. As a thin blocked electrode layer is tightly combined with the substrate material, has no oxygen leaking gap, stops the factors causing error and thus can ignore an electrode resistance and a contact resistance, thereby obtaining the accurate electron conductivity value.
Description
technical field [0001] The invention relates to a preparation method of an ion-blocking electrode battery for measuring the electronic conductivity of a solid electrolyte ion conductor (such as a YSZ material) at a high temperature. The preparation problem belongs to the technical field of functional ceramic electrical performance testing. Background technique [0002] The ionic conductance exhibited by solid electrolyte materials is far greater than its electronic conductance at a certain temperature. For example, YSZ material stabilizes its phase structure by doping a certain amount of yttrium oxide in zirconia, so that it has excellent characteristics such as high chemical stability, thermal shock resistance and strength. At a certain temperature, the carriers in the YSZ material exchange positions with the oxygen vacancies to show ionic conductivity. Like many oxides that have semiconducting properties at high temperatures, YSZ can also conduct free electrons under the...
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Patent Timeline
20 May 2009
Publication
CN101435835A
- IPC
- G01R27/02
- Inventors
- 华纬; 鲁雄刚