Lab隨記

Reference  :https://onlinelibrary.wiley.com/action/downloadSupplement?doi=10.1002%2Fadma.201705580&file=adma201705580-sup-0001-S1.pdf A cell was charged or discharged at 30 mA g-1 rate for 20 min, followed by a 3 h open circuit step to allow relaxation back to equilibrium (defined as dE/dt < 0.2 mV h-1).  The procedure was continued until the charge (or discharge) voltage reached 1.8 V (0.2 V). The Zn2+ ion diffusion coefficients could be calculated using the following equation first outlined by Weppner and Huggins: where, I is the current (A);  Vm is the molar volume of the ZVO (cm3 mol-1);  ZA is the charge number; F is the Faraday’s constant (96485 C mol-1);  S is the electrode/electrolyte contact area (cm2);  dE/dδ is the slope of the coulometric titration curve, found by plotting the steady state voltages E (V) measured after each titration step δ;  dE/d√t is the slope of the linearized plot of the potential E (...

1. NIST XPS database https://srdata.nist.gov/xps/Default.aspx 2. Thermo Scientific  https://xpssimplified.com/periodictable.php 3.Handbook of X-ray Photoelectron Spectroscopy https://www.cnyn.unam.mx/~wencel/XPS/MANXPS.pdf

參考資料連結: http://www.cailiaoniu.com/35490.html 方法一：循環伏安法（Cyclic Voltammetry, CV） 方法特點 ①要求是可逆體系（電化學步驟可逆） ②優點是設備簡單，數據處理容易 ③缺點1：得到的只是表觀的擴散係數 ④缺點2：濃度變化△Co的確切值很難求得。 方法二：交流阻抗法（Electrochemical Impedance Spectroscopy, EIS） 方法特點 ①可以直觀的看出是否受擴散控制 ②缺點1：得到的結果也只是一個表觀的擴散係數 ③缺點2：要求所測體系的摩爾體積V  m 不發生變化。 方法三：恆電位間歇滴定法（Potentiostatic Intermittent Titration Technique, PITT 方法特點 只需測電極的厚度，避開了電極的真實面積的大小和摩爾體積的變化。 方法四：電位弛豫法（Potential Relax Technique, PRT） 方法特點 ①同PITT一樣只需測電極活性物質的厚度d ②與PITT不同的是，PRT記錄的是電極電位隨時間變化的曲線，而PITT記錄的是電流隨時間變化曲線。 方法五：恆電流間歇滴定法（Galvanostatic Intermittent Titration Technique, GITT）

Standard Reduction Potentials (E 0' ), 25 o C oxidant reductant n (electrons) Eo´ ( volts) Acetate + carbon dioxide pyruvate 2 -0.70 succinate + CO 2 + 2H + a- ketoglutarate + H 2 O 2 -0.67 acetate acetaldehyde 2 -0.60 glycerate-3-P glyceraldehyde-3-P + H 2 O 2 -0.55 O 2 O2- 1 -0.45 ferredoxin (ox) ferredoxin (red) 1 -0.43 Carbon dioxide formate 2 -0.42 2H+ H 2 2 -0.42 a -ketoglutarate + CO 2 + 2H + isocitrate 2 -0.38 acetoacetate b -hydroxybutyrate 2 -0.35 Cystine cysteine 2 -0.34 Pyruvate + CO 2 malate 2 -0.33 ...