Molten carbonate direct carbon fuel cells (MC-DCFCs) are one of the most promising technologies for clean and efficient energy conversion from solid carbon. However, the low power density of carbon fuel cells has been one of the challenging bottlenecks limiting their application. In this study, a novel anode structure is designed and fabricated for an MC-DCFC to improve the mixing uniformity between the carbon powder and electrolyte and enhance the interfacial contact between the carbon powder and the anode. Five typical carbon fuels are used to investigate the electrochemical performance of the cells with two different anodes at different temperatures. The comparison of the power density before and after improvements to the anode shows that the power density with each carbon fuel in the MC-DCFC has been notably increased. A maximum power density of 144.9 mW cm⁻² is achieved by a bamboo-based carbon with the novel anode structure. In addition, two hybrid carbon fuels are tested, and their power densities are 163.6 mW cm⁻² for fuel A and 170.5 mW cm⁻² for fuel B, which indicates that adding conductive carbon black to the carbon fuels can effectively promote their performance.

熔融碳酸盐直接碳燃料电池（MC-DCFC）是最有前途的技术，可用于从固体碳中进行清洁，高效的能量转换。然而，碳燃料电池的低功率密度已经成为限制其应用的挑战性瓶颈之一。在这项研究中，为MC-DCFC设计和制造了一种新颖的阳极结构，以改善碳粉与电解质之间的混合均匀性并增强碳粉与阳极之间的界面接触。使用五种典型的碳燃料来研究带有两个不同阳极的电池在不同温度下的电化学性能。对阳极改进前后的功率密度的比较表明，MC-DCFC中每种碳燃料的功率密度已显着提高。^-2通过具有新颖阳极结构的竹基碳实现。此外，两个混合碳燃料被测试，它们的功率密度是163.6毫瓦厘米^-2燃料A和170.5毫瓦厘米^-2用于燃料B，这表明添加导电性炭黑的碳燃料能有效促进其性能。