Site items in: Fuel Cells

Ammonia-based Clean Energy System with Ultra-High Energy Density
Paper

Ammonia-based Clean Energy System with Ultra-High Energy Density

Seonghoon Woo November 9, 2021

Amogy builds a novel carbon-free high energy density system using ammonia (NH3) as a fuel, with the targeted system-level energy densities of >1,000 Wh/kg (gravimetric) and >750 Wh/L (volumetric), respectively.  The solution consists of ammonia storage, a miniaturized fuel processor (or called reformer/reactor) and a fuel cell. With highly efficient catalysts operating at significantly low temperature and heat-integrated hybrid reactor, the innovative energy system is optimized for the mobility applications requiring sustainable and dynamic operations. This new energy system could enable the electrification of heavy ground/sea/air transportations, where current existing and emerging technologies, e.g., Li-ion battery or gaseous hydrogen (H2),…

Catalytic Membrane Reactors for Efficient Delivery of High Purity Hydrogen from Ammonia Decomposition
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Catalytic Membrane Reactors for Efficient Delivery of High Purity Hydrogen from Ammonia Decomposition

Zhenyu ZhangSimona LiguoriJ. Douglas WayColin A. Wolden October 31, 2018

The deployment of fuel cell electric vehicles is constrained by the paucity of hydrogen fueling stations and price, which is dominated by the costs of hydrogen storage and transportation. With more hydrogen per volume than liquid H2 and an extensive distribution infrastructure in place, ammonia is a promising vector for efficient hydrogen distribution. In this talk we describe the development of innovative catalytic membrane reactor (CMR) technology for the delivery of high purity H2 from ammonia cracking. The CMR integrates state-of-the art catalysts with thin metal membranes in an innovative design. Conventionally, the catalyst is supplied to CMRs in the…

Paper

Ammonia Fuel Cell and Fuel Synthesis Using Protonic Ceramics

Chuancheng DuanJianhua TongJason GanleyRyan O'Hayre September 19, 2016

Proton-conducting ceramics synthesized with solid-state reactive sintering are employed as electrolytes for the synthesis of ammonia from hydrogen and nitrogen gases in electrolytic cells. Additionally, these cells function with excellent long-term stability and high efficiency when operated in galvanic (fuel cell) mode using ammonia fuel. Advances in electrolyte compositions and synthesis techniques are discussed alongside cell performance metrics.