Design of a 10V Potentiostat for Development of Lithium Cell

• Main Authors: Hong,Guo-Ping, 洪國評
• Other Authors: Huang,Chun-Yueh
• Format: Others
• Language: zh-TW
• Published: 2016
• Online Access: http://ndltd.ncl.edu.tw/handle/73919391386036383600

碩士 === 國立臺南大學 === 電機工程學系碩博士班 === 104 === he purpose of this thesis is to design a potentiostat for Lithium-ion battery development. In order to detect the electrochemical reaction of Lithium-ion battery, the designed potentiostat must have the functions of scanning larger potential output and measuring larger current range. Hence, a 10V potentiostat is proposed for Lithium-ion battery development. In the potentiostat, one mix-signal microprocessor (MCU) is used to control the signal processing and to collect the measured data. The operational amplifiers are used to realize the voltage amplifiers and the level shifter circuits to generate larger output potential and larger measured current. As for the software, we adopt Labview to design a user operation interface for the convenience to control the potentiostat and to observe the experimental results.In addition, the proposed potentiostat can also be applied in the signal processing of electrochemical biosensors. The function of the potentiostat in this thesis is a common operation mode: cyclic voltammetry, which is commonly used in electrochemical experiments. In the verification of the potentiostat, we use the resistors to simulate Lithium-ion battery for larger current measurement and larger output potential generation. The potentiostat has been integrated with the screen-printed electrode, which is acted as a biosensor and verified by the potassium ferricyanide solution (3K+[Fe(CN)6]3-). The experimental results show that the proposed potentiostat has the same trend as the commercial ones. In conclusion, the proposed potentiostat has the merits of small size, low cost, larger scanned potential output, and larger measured current range, and it is quite suitable for the application of signal processing of different biosensors.