Portal de Periódicos da CAPES

A high-performance H2O2-based fuel cell for air-free applications

2022; Elsevier BV; Volume: 548; Linguagem: Inglês

10.1016/j.jpowsour.2022.232114

1873-2755

Oladapo Christopher Esan, Xingyi Shi, Zhefei Pan, Yun Liu, Xiaoyu Huo, Liang An, Tianshou Zhao,

Advancements in Solid Oxide Fuel Cells

A newly introduced fuel cell which employs an electrically rechargeable liquid fuel (e-fuel) has piqued increasing research interest in recent years as it eliminates the need for catalyst materials at the anode. To further boost the performance of the e-fuel cell and realize its application in airtight environments, hydrogen peroxide (H 2 O 2 ) is considered as an alternative oxidant instead of oxygen. Here, the operation and performance of a H 2 O 2 -based fuel cell is investigated. The novel e-fuel/H 2 O 2 fuel cell displays a peak power density of 1456.0 mW cm −2 at 60 °C , which is 70% higher than the use of oxygen (857.0 mW cm −2 ). A maximum current density exceeding 3000 mA cm −2 is also achieved by the cell. Such impressive performance not only outclasses the e-fuel cell supplied with oxygen but also exceeds many liquid fuel cells that use H 2 O 2 as oxidant. This therefore reveals the capability of e-fuel/H 2 O 2 fuel cell as a promising power source in airtight environments and high-power applications. The performance of the cell at various operating conditions including its discharge behavior at constant currents are also investigated. This study thus offers stimulating insights for advanced investigations towards improving the design and operational characteristics of this H 2 O 2 -based fuel cell. • An e-fuel/hydrogen peroxide fuel cell is proposed. • The fuel cell exhibits a peak power density of 1456.0 mW cm −2 at 60 °C . • Effects of various operating conditions on the cell performance are investigated. • The cell demonstrates its promising applications for high-power systems.