文档介绍：Chapter 1 Chapter 1 电化学基础电化学基础?教学目的?在《物理化学》课程基础上,加深对电化学基本概念和基本原理的理解?通过电化学原理的学****增强分析问题能力?基本内容与要求(知识点) ?电化学基本概念?电化学热力学?不可逆电极过程?电化学极化和浓度极化?课外自学?吸附;电催化本章导学作业:概述《物理化学》中“电化学”基本内容电化学研究对象 An electrochemical reaction is a heterogeneous (异相) chemical process involving the transfer of charges taking place at the interface between the electronic conductor and ionic conductor. O+ne R——电化学反应问题:电化学反应具有什么特点?怎么来研究电化学反应? ?电化学反应特征?异相催化反应( Heterogeneous catalysis reaction ) 电极( electrode ) ------ 催化剂( catalyst ) ?氧化还原反应氧化和还原反应在空间上可以分离?特殊性: double electric layer (双电层) surface electric field (表面电场) 特殊的异相催化氧化还原反应?热力学( Thermodynamics ) (reverse system) ?动力学( ics of electrode process ) (irreversible system) ?研究方法 Fundamental concepts Electrical double layer Irreversible electrode processes Electron transfer and electrochemical polarization Mass transport and concentration polarization 1 Basic electrochemical devices 2 mon types of electrode processes 3 Electronic conductors and ionic conductors 4. Faraday ’ s laws of electrolysis 5. Electromotive force and Electrode potential Fundamental Concepts Basic electrochemical devices (Electrochemical reactors) ? Two kinds of electrochemical devices: Galvanic cell (原电池) Electrolytic cell (电解池) ? The ponents of cells: anode (阳极) cathode (阴极) electrolyte (电解质) ? Anode: positive charge from electrode into solution (oxidation) ? Cathode: positive charge from solution to electrode (reduction) Galvanic cell Electrolytic cell Positive electrode Cathode Anode Negative electrode Anode Cathode Electrode: ? working electrode (WE) 工作电极 A ? counter electrode (CE) 对电极 B ? reference electrode (RE) 参比电极 C问题? Electrochemical cells in laboratory: 问题:为什么用三电极体系?简述各电极作用和要求 mon types of electrode processes