Luận án Nghiên cứu tổng hợp và biến tính MS₂ (m = sn, w) với g-C₃N₄ làm chất xúc tác quang và vật liệu anode pin sạc lithium-ion

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(2020), "SnS2/g-C3N4/graphite nanocomposites as durable lithium- ion battery anode with high pseudocapacitance contribution", Electrochimica Acta,349, pp. 136369. 134 PHỤ LỤC Hình P1. (a) Giản đồ XRD của SNS, SCNx (x = 1, 3, 5 và 7) trong khoảng 2θ = 10–30o. (b) Phổ IR trong vùng 1000–1800 cm–1. (b) Đường đẳng nhiệt hấp phụ – giải hấp phụ N2 và (c) phân bố kích thước mao quản BJH của các mẫu vật liệu SNS, SCN1 và SCN3. 135 Hình P2. Ảnh (a) TEM và (b) HR-TEM của vật liệu SCN7. Hình P3. Giản đồ XRD của vật liệu WCN5 trong khoảng 2θ = 5–15o. 136 Hình P4. (a) Phổ IR trong vùng 600–400 cm–1 của vật liệu WS và WCN5. (b) Phổ Raman của vật liệu com-WS và WCN5. Hình P5. Ảnh SEM của các vật liệu (a) CN và (b) WCN25. 137 Hình P6. Đồ thị phụ thuộc hàm Kubelka – Munk vào năng lượng photon ước tính Eg của WS, các composite WCNy (y = 3, 5, 10, 25, 30 và 35) và CN. 138 Hình P7. Mô hình mạch tương đương cho EIS. 139 Bảng P1. Bảng giá trị C/Co của RhB theo thời gian t (giờ) đối với mẫu CN, SNS và các composite SCNx (x = 1, 3, 5, 7, 25, 30 và 35). Thời gian (giờ) C/Co CN SNS SCN1 SCN3 SCN5 SCN7 SCN25 SCN30 SCN35 0 1 1 1 1 1 1 1 1 1 1 0,888448 0,9036498 0,948998 0,931921 0,929527 0,885897 0,8333928 0,7296235 0,8749172 2 0,800722 0,8220806 0,851289 0,871785 0,77828 0,753114 0,6790282 0,5055664 0,715449 3 0,690253 0,7405114 0,768612 0,71407 0,659018 0,626894 0,5283898 0,3008989 0,5794027 4 0,632853 0,6748181 0,696135 0,659607 0,579871 0,524908 0,3862679 0,1877932 0,4667783 5 0,577077 0,6447087 0,655333 0,559191 0,513192 0,439079 0,2659701 0,110235 0,3770774 6 0,542961 0,6299277 0,583394 0,527989 0,475245 0,39364 0,1845295 0,0777575 0,3073101 Bảng P2. Bảng giá trị C/Co của RhB theo thời gian t (giờ) đối với mẫu WS và các composite WCNy (y = 1, 3, 5, 10, 25, 30 và 35). Thời gian (giờ) C/Co WS WCN1 WCN3 WCN5 WCN10 WCN25 WCN30 WCN35 0 1 1 1 1 1 1 1 1 1 0,9850321 0,9526981 0,9091755 0,8398559 0,8896708 0,807812 0,8285876 0,8609492 2 0,9379901 0,8812195 0,7799038 0,7190355 0,7639914 0,5612035 0,607804 0,7377742 3 0,8717037 0,7498252 0,6790496 0,6580554 0,6378324 0,3969613 0,454143 0,5812051 4 0,8460445 0,6189565 0,6038269 0,5680099 0,5409345 0,3045934 0,3620574 0,4290156 5 0,7883111 0,5658732 0,5492207 0,5150085 0,431085 0,238112 0,2649792 0,3622274 6 0,7273704 0,5211992 0,4946146 0,47 0,3740016 0,1694735 0,2422351 0,3020086 140 Bảng P3. Bảng giá trị C/Co của RhB theo thời gian t (giờ) đối với mẫu SCN30 trong các điều kiện khác nhau: có mặt O2, N2 và các chất dập tắt. Thời gian (giờ) C/Co O2 N2 AO TBA BQ 0 1 1 1 1 1 1 0,618867 0,7578505 0,894489 0,828269 0,924051 2 0,375239 0,605468 0,72752 0,595584 0,822956 3 0,164132 0,4990774 0,575236 0,400001 0,717756 4 0,087107 0,3976738 0,464831 0,253712 0,65361 5 0,051162 0,314002 0,358232 0,184277 0,586898 6 0,019781 0,2513867 0,291879 0,109012 0,514541 Bảng P4. Hằng số tốc độ theo mô hình Langmuir - Hinshelwood. Điều kiện Hằng số tốc độ k (giờ–1) Hệ số hồi quy (R2) Không khí 0,44402 0,99344 O2 0,65055 0,99016 N2 0,22589 0,99830 AO 0,21330 0,99130 TBA 0,41022 0,98487 BQ 0,11185 0,99633