| 高效CoFe2O 4的制备及其碱性析氧性能 |
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| 引用本文：李淑敏,吴鹏,陈艺哲,林东海.高效CoFe2O 4的制备及其碱性析氧性能[J].上海第二工业大学(中文版),2022,39(2):142-149 |
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| 基金项目:上海市高等学校特聘教授(东方学者) (A30DB212103), 上海市科委扬帆计划(17YF1406600), 上海市教委晨光计划
(18CG68), 上海先进热功能材料工程技术研究中心、上海市材料科学与工程高原学科资助 |
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| 中文摘要:析氧反应(oxygen evolution reaction, OER) 电催化剂存在成本高、效率低等问题。OER 是一个需要高过电
位的四电子-质子耦合反应, 为了降低电解水阳极的OER 过电位和提高钴铁氧化物(CoFe2O4) 的电流密度和稳定
性, 采用简单的水浴和煅烧的方法制备不同煅烧温度的非贵金属催化剂CoFe2O4。采用XRD、SEM、TGA 等方法
对CoFe2O4 材料进行表征, 电化学研究结果表明, 在1 mol/L KOH 溶液中, 经过300 ℃ 煅烧的CoFe2O4 OER 性能最好, 1.58 V 时就可以产生10 mA/cm2 的电流密度, 塔菲尔(Tafel) 斜率为96 mV/dec, 经过1 000 次循环伏安扫描和计
时电流进行稳定性测试后, 其析氧性能依然保持较高的稳定性。 |
| 中文关键词:析氧反应 电催化剂 钴铁氧化物 煅烧温度 |
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| CoFe2O4 as Efficient Oxygen Evolution Reaction Catalysts in Alkaline Media |
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| Abstract:Oxygen evolution reaction (OER) electrocatalysts suffer from high cost and low efficiency. OER is a four electron-proton coupling reaction, which requires higher overpotential. To reduce the overpotential of OER of electrolytic water anode and improve the current density and stability of CoFe2O4, a simple water bath and calcination method is adopted to improve OER by preparing CoFe2O4 with different calcination temperatures as a non-noble metal catalyst. The materials were characterized by XRD, SEM and TGA, and the electrochemical results illustrate that CoFe2O4 calcined at 300 ℃ has the optimal OER performance in 1 mol/L KOH solution, which can produce a current density of 10 mA/cm2 at 1.58 V, and the Tafel slope is 96 mV/dec, after 1 000 cyclic voltammetry scans or current-time tests, its OER performance still maintains high stability. |
| keywords:oxygen evolution reaction electrocatalyst cobalt iron oxide calcination temperature |
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