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Self-supported spinel FeCo2O4 nanowire array: an efficient non-noble-metal catalyst for the hydrolysis of NaBH4 toward on-demand hydrogen generation

机译:自支撑尖晶石FeCo2O4纳米线阵列:一种有效的非贵金属催化剂,用于NaBH4水解以按需生成氢

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摘要

NaBH4 has been considered as one of the most advantageous candidates for chemical hydrogen storage, but it is still a huge challenge to design efficient non-noble-metal catalysts for on-demand hydrogen generation from NaBH4 hydrolysis. In this paper, we demonstrate for the first time that a spinel FeCo2O4 nanowire array supported on carbon cloth (FeCo2O4 NA/CC) behaves as an efficient earth-abundant catalyst toward NaBH4 hydrolysis in alkaline solutions with an activation energy of 44.98 kJ mol(-1). Such FeCo2O4 NA/CC offers a hydrogen generation rate of 2551 ml min(-1) g(-1) under ambient conditions, with good stability and reusability. Its use as an ON/OFF switch for on-demand hydrogen generation is also demonstrated successfully.
机译:NaBH4被认为是化学氢存储的最有利的候选者之一,但是设计高效的非贵金属催化剂用于NaBH4水解按需生成氢仍然是一个巨大的挑战。在本文中,我们首次证明了载于碳布上的尖晶石FeCo2O4纳米线阵列(FeCo2O4 NA / CC)在碱溶液中作为NaBH4水解的有效富土催化剂,其活化能为44.98 kJ mol(- 1)。此类FeCo2O4 NA / CC在环境条件下具有2551 ml min(-1)g(-1)的氢气产生速率,具有良好的稳定性和可重复使用性。还成功证明了其用作按需生成氢气的ON / OFF开关。

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