發(fā)布時間：2018-04-22 20:41

  本文選題：納米材料 + 電分解水��； 參考：《西華師范大學》2016年碩士論文

【摘要】：本論文主要圍繞基于鎳的硫族化合物納米功能材料的制備、表征、以及探究其在電催化析氫方面的應(yīng)用。取得的主要研究成果如下:1、通過兩步法反應(yīng)成功制備了二硫化鎳納米陣列電極,并首次當作一個三維的析氫電極探究其在堿性和中性中的催化性能。此三維自支撐電極在中性電解液中展現(xiàn)出優(yōu)秀的電催化效果,當電流密度達到2和10毫安每平方厘米時,過電勢分別為193和243毫伏。同時該三維電極對堿性電解液也同樣具有高效的電催化產(chǎn)氫性能。2、第一次在導電基底泡沫鎳上通過水熱加硫源和鎳鹽一步法生長二硫化三鎳納米片薄膜電極并探究其在中性電解液中的電催化產(chǎn)氫的性能。此三維電極是一個廉價的,高效的且穩(wěn)定的陰極析氫電極。在中性電解液中,當電流密度達到10和100毫安每平方厘米時,過電勢分別為220和396毫伏。在堿性電解液中,當電流密度達到10和100毫安每平方厘米時,過電勢分別為123和260毫伏。3、通過溶劑熱陰離子交換法首次在導電基底碳纖維布上合成二硒化鎳納米片陣列,并研究其在酸性電解液中的電催化分解水的性能,該電極表現(xiàn)出卓越的催化活性以及優(yōu)秀的穩(wěn)定性。在酸性電解液中,當電流密度達到10和100毫安每平方厘米時,需要的過電勢分別為145和183毫伏。4、首次報道了利用硒氫化鈉溶液作為硒源在泡沫鎳上原位生長出硒化鎳的納米線薄膜并當做一個三維的雙功能電極。我們對催化劑的結(jié)構(gòu)進行了系統(tǒng)的表征以及研究了其催化析氧和析氫的性能。在兩電極池中達到電流密度為10毫安每平方厘米時需要過電位為1.63伏特。
[Abstract]:This thesis focuses on the preparation, characterization and application of nickel-based sulfur-based nano-functional materials in electrocatalytic hydrogen evolution. The main research results are as follows: 1. Nickel disulfide nanoarray electrode was successfully prepared by two-step reaction and used as a three-dimensional hydrogen evolution electrode for the first time to investigate its catalytic performance in alkaline and neutral systems. The three dimensional self-supporting electrode exhibits excellent electrocatalytic effect in neutral electrolyte. When the current density reaches 2 Ma and 10 Ma per square centimeter, the overpotential is 193 MV and 243 MV, respectively. At the same time, the three dimensional electrode has the same high performance in electrocatalytic hydrogen production of alkaline electrolyte. It is the first time to grow nickel trisulfide nanocrystalline film electrode by hydrothermal sulfur source and nickel salt on conductive substrate foamed nickel. The electrocatalytic hydrogen production in neutral electrolyte was investigated. This three-dimensional electrode is a cheap, efficient and stable cathode hydrogen evolution electrode. In neutral electrolyte, when the current density reaches 10 Ma and 100 Ma per square centimeter, the overpotential is 220 and 396 millivolts, respectively. In alkaline electrolyte, when the current density reaches 10 Ma and 100 Ma per square centimeter, the overpotential is 123 and 260 MV 路3 respectively. The nickel diselenide nanocrystalline array was synthesized by solvothermal anion exchange method on the conductive substrate carbon fiber cloth for the first time. The electrocatalytic decomposition of water in acidic electrolyte was studied. The electrode showed excellent catalytic activity and excellent stability. In acidic electrolytes, when the current density reaches 10 and 100 Ma per square centimeter, The required superpotential is 145 and 183 MV 路4, respectively. It is the first time that nanowire thin films of nickel selenide were grown on foamed nickel by using sodium selenohydride solution as a selenium source and used as a three dimensional bifunctional electrode. The structure of the catalyst was systematically characterized and its catalytic properties of oxygen evolution and hydrogen evolution were studied. An overpotential of 1.63 volts is required for a current density of 10 Ma per square centimeter in two electrode cells.
【學位授予單位】：西華師范大學
【學位級別】：碩士
【學位授予年份】：2016
【分類號】：O643.36;TQ116.2

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