International Journal of Hydrogen Energy ( IF 8.1 ) Pub Date : 2022-06-20 , DOI: 10.1016/j.ijhydene.2022.06.009 Yuqing Wang , Fangzhen He , Yanmei Ren , Yasu Lin , Ming Zhong , Bitao Su , Ziqiang Lei
The development of economical, durable, and efficient oxygen evolution reaction (OER) electrocatalysts is essential for large-scale industrial water electrolysis. Here, a straightforward strategy is proposed to synthesize a series of nickel selenide nanosheets supported on nickel foam (NiSe2/NF) materials by directly selenizing nickel foam substrates at different temperatures under an inert atmosphere. When evaluated as electrocatalysts in OER, the optimal self-supported NiSe2/NF-350 shows an excellent performance in 1.0 M KOH medium with an overpotential of 458 mV at 100 mA cm−2, a small Tafel slope of 45.8 mV dec−1, and a long-term stability for 36 h. Furthermore, the structural and compositional preservation for NiSe2/NF-350 after stability test was also verified by various characterizations.
中文翻译:
直接制备以镍泡沫为载体的硒化镍纳米片作为析氧反应的高效电催化剂
开发经济、耐用、高效的析氧反应 (OER) 电催化剂对于大规模工业水电解至关重要。在这里,提出了一种直接的策略,通过在惰性气氛下在不同温度下直接硒化泡沫镍基材,合成一系列负载在泡沫镍(NiSe 2 /NF)材料上的硒化镍纳米片。当作为 OER 中的电催化剂进行评估时,最佳的自支撑 NiSe 2 /NF-350 在 1.0 M KOH 介质中表现出优异的性能,在 100 mA cm -2下具有 458 mV 的过电位,45.8 mV dec -1的小 Tafel 斜率, 并长期稳定 36 h。此外,NiSe 2的结构和组成保存/NF-350 在稳定性测试后也通过各种表征进行了验证。