电解0.1m1/LCuS04溶液 阴极反应(-):Cu2++2e=Cuy 阳极反应(+):2H2O=O2↑+4H+4e 电池反应:2Cu2++2H2O=2Cu+O2+4H+ 0.059 E(CuCu2)=0.337+-lCu2]=0.307(V) 0.059 E(O2H2O)=1.29+g O,H 4°田H2O2 1.22(V) 原电池电动势为:E=122-0.307=091(平 图电解电池 n=0.8v Over potential, E(02/H20 =2.021 E外=(E阳+阳 )-(E阴十引阴)+iR E=2.02-0.307=1.65V
电解 0.1 mol/L CuSO4 溶液 阴极反应（-）：Cu2+ + 2e ＝ Cu 阳极反应（+）：2H2O ＝ O2 + 4H+ +4e 电池反应：2Cu2+ + 2H2O = 2Cu + O2 + 4H+ 1.22 (V) [H O] [O ][H ] lg 4 0.059 (O /H O) 1.229 lg[Cu ] 0.307 (V) 2 0.059 (Cu/Cu ) 0.337 2 2 4 2 2 2 2 2 = + = = + = + + + E E 原电池电动势为：E= 1.22 - 0.307 = 0.91 (V) = 0.8V Over potential, E(O2 /H2O)=2.02V E = 2.02-0.307=1.65V E外 = （E阳 + η阳）-（E阴 + η阴） + iR
05 a 0,4 03 D 3.0 外加电压(矿 a’理论计算曲线a实测曲线 n’理论分解电压D实际分解电压 电解C溶液的电流-电压曲线
Voltammetry Voltammetry comprises microelectrolysis techniques in which the working electrode potential is forced by external instrumentation to follow a known potential-time function and the resultant current- potential and current-time curves are recorded and analyzed to obtain information a bout the solution composition. Depending on the shape of the potential-time perturbing (ta)signal and on the mode of the analyte transport, voltammetric techniques can be subdivided as Linear potential sweep volatmmetry(线性电位扫描伏安法) Potential step method(电位阶跃法) Hydrodynamic methods(流体动力学方法) Stripping voltammetry(溶出伏安法)
Voltammetry comprises microelectrolysis techniques in which the working electrode potential is forced by external instrumentation to follow a known potential-time function and the resultant currentpotential and current-time curves are recorded and analyzed to obtain information about the solution composition. Depending on the shape of the potential-time perturbing (扰动)signal and on the mode of the analyte transport, voltammetric techniques can be subdivided as : Linear potential sweep volatmmetry （线性电位扫描伏安法） Potential step method （电位阶跃法） Hydrodynamic methods （流体动力学方法） Stripping voltammetry （溶出伏安法） Voltammetry
Chapter3 Voltammetry伏安法 Section 1 Linear potential sweep volatmmetry(线性扫描伏安法) Section2 Stripping voltammetry(溶出伏安法)
Section 1 Linear potential sweep volatmmetry （线性扫描伏安法） Section 2 Stripping voltammetry （溶出伏安法） Chapter 3 Voltammetry 伏安法
Section 1 Linear sweep volatmmetry(LSV)(线性扫描伏安法) 1. LSV with Dropping mercury electrode (Dme) Polarography极谱法 2. LSV with stationary electrodes
Section 1 Linear sweep volatmmetry (LSV)（线性扫描伏安法） 1. LSV with Dropping mercury electrode (DME) 2. LSV with stationary electrodes Polarography 极谱法