Although direct glucose fuel cell (DGFC) is widely regarded as one of the most promising energy systems, the low catalytic activity and inferior instability of most anode catalysts during electro-oxidation of glucose has greatly hampered its potential applications. In this work, an efficient and durable anode catalyst of nanoporous bismuth (Bi) for the alkaline electro-oxidation of glucose was proposed just by a simple de-alloying method. The microstructure and catalytic performance of nanoporous bismuth could be finely tuning through actively controlling the composition of precursor Mg–Bi alloy. A three-dimension structure was formed after de-alloying Mg–Bi precursor, giving rise to an increased specific surface area and correspondingly resulting in an enhanced electro-catalytic performance. It has intimated that the optimal nanoporous Bi catalyst with an open, bi-continuous interpenetrating pore-to-ligament structure was constructed based on Mg₆₅Bi₃₅ alloy etching and exhibited an enhanced current density (as high as 8.04 mA/cm²) during alkaline electro-oxidation of glucose, together with the lowest poisoning rate of 5.6 × 10⁻³%. The remarkable electrochemical performance of the nanoporous Bi catalyst, coupling with facile dealloying strategy may facilitate design and development of renewable energy device.

尽管直接葡萄糖燃料电池（DGFC）被广泛认为是最有前途的能源系统之一，但是大多数阳极催化剂在葡萄糖电氧化过程中的低催化活性和较差的不稳定性极大地阻碍了其潜在的应用。在这项工作中，仅通过一种简单的脱合金方法就提出了一种高效，持久的纳米多孔铋（Bi）阳极催化剂，用于葡萄糖的碱性电氧化。可以通过主动控制前驱体Mg-Bi合金的成分来微调纳米多孔铋的微观结构和催化性能。Mg-Bi前驱体脱合金后形成三维结构，从而增加了比表面积，并相应地提高了电催化性能。₆₅ Bi ₃₅合金蚀刻后，在葡萄糖的碱性电氧化过程中表现出增强的电流密度（高达8.04 mA / cm ²），并且中毒率最低，为5.6×10 ^-3％。纳米多孔Bi催化剂的出色电化学性能，再加上简便的脱合金策略，可以促进可再生能源装置的设计和开发。