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第七章电化学
Electrochemistry
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In particular, recently popular producing and use of rechargeable lithium battery, practical research on fuel cell in power and automobile industry, and bioelectrochemistry boosting pour new vigor into the old subject.
Electrochemistry is a old and young subject. Since Volta made the first galvanic cell in 1800, it has developed into prehensive subject such as chemical power, electrochemical analysis, electrochemical synthesis, photoelectrochemistry, bioelectrochemistry, electrocatalysis, electromatallurgy, electrolysis, electroplate , corrosion and protection , and so on.
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Electrochemistrical basic theory explores the laws of reciprocal transformation between chemical energy and electrical energy with thermodynamic method. It focus on the theorem and the thermodynamic properties of a galvanic battery and a electrolyzer, and is divided into two parts as follow:
chemical reactions to generating electrical energy –Chemical energy will change into electrical energy when a spontaneous reaction is performed in a galvanic cell.
On basic research or applied study, electrochemistry often makes a breakthrough and a progress from theory to methodology. It more and more intercrosses and rates with other nature subjects. It plays important role in many fields such as energy, traffic, material, environmental protection ,information and life.
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三部分:
电解质溶液:(§ --§)
原电池: (§ --§)
电解和极化:(§--§)
electrical energy to drive chemical reaction—a unspontaneous reaction can occur if it is placed in a electrolytic cell and electric current pass through the electrolyzer.
There are always electrolyte solution in a galvanic cell or electrolytic cell. Hence, this chapter also introduces the basic properties of electrolyte solution and its conductance
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§ 电极过程、电解质溶液及法拉第定律
1. 电解池和原电池 electolytic cell and galvanic cell
但如将逆反应放入如图
所示装置内,通电后,逆反
应可进行。
例: H2+ H2O
25℃, kPa下:
G=- kJmol-1 < 0