文档介绍：Chapter 1 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.
——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 devices2 mon types of electrode processes 3 Electronic conductors and ionic conductors 4. Faraday’s laws of electrolysis5. 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