Basic Concepts in Electrochemistry

1 Basic Concepts in Electrochemistry2 Electrochemical CellElectronsCurrent+-ANODECATHODEC urrentVoltage Source3 Fuel CellElectrons (2 e)Current-+ANODECATHODEC urrentElectrical LoadH22H++ 2e O2+ 2H++ 2e H2O4 Electrolysis CellElectrons (2 e)Current+-ANODECATHODEC urrentVoltage Source2 H+; SO4 2-H2O O2+ 2H++ 2e2H++ 2e H25 What is Electrochemistry ? Electrochemistry is defined as the branch of chemistry that examines the phenomena resulting from combined chemical and electrical of processes This field covers:-Electrolytic processes: Reactions in which chemical changes occur on the passage of an electrical current -Galvanic or Voltaic processes: Chemical reactions that result in the production of electrical energy 7 Electrochemical cellAn electrochemical cell typically consists of:-Two electronic conductors (also called electrodes) -An ionic conductor (called an electrolyte)8 Modes of charge transportCharge transport in the electrodes occurs via th

5 What is electrochemistry? Electrochemistry is defined as the branch of chemistry that examines the phenomena resulting from combined chemical and electrical effects.

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