Electroanalytical Chemistry Lecture书 An Introduction to electro chemica Method
General Appro ach to Electrochemical Experiments ◆ Identify assumptions D佈mn-m8ta忽rt Identify suitable boundary co nd itions ◆S口 Ive linear dittusion equation (FICKs2nd lay 一以eL学門Cet念rT Substitute solution into Nernst-planck equation and solv e
Experiments are Categ orized By the excitation wayeform -2 kinds yariation in单 plied P otentia〔E〕 ◆Step Ramp variat ion in Applied Current () ◆ the response waveform voltammetry (I vS E
Potential Step Methods ◆ Chronoam peron etry C R色 =ponse ● Chronocoulom etry 〔CC E : spg ◆ Pulse woit am m etry 一 Response:i够.E Alluse potartialstap exc ttion All in quiescent splution
Chronoamperometry(Ca) Exciation. Solution: Cottrell equation nFd T ti◆E1- redox activit Resporse E2:|E|≥E I-step size: determ ined perim enta‖y time Stationary 1, quiescent soution