4.8 Article

A spontaneous hydrogen fuel purifier under truly ambient weather conditions

Journal

ENERGY & ENVIRONMENTAL SCIENCE
Volume 16, Issue 9, Pages 3860-3872

Publisher

ROYAL SOC CHEMISTRY
DOI: 10.1039/d3ee02095a

Keywords

-

Ask authors/readers for more resources

By harvesting the energy of water formation, contaminated hydrogen streams can be refined to nearly 99.9% purity in a single-step at an expenditure of 24 kJ mol(H2)(-1) and with an electrical energy output of 90 kJ mol(H2)(-1) under ambient conditions. A laboratory-level prototype can spontaneously generate nearly 99.4% pure hydrogen in a single-step, even from a quaternary mixture of impurities that include hydrocarbons, CO2 and N-2.
Hydrogen is an ideal energy vector to offer a carbon-neutral energy pathway. However, produced hydrogen is contaminated with carbonaceous and non-carbonaceous impurities that are beyond the tolerance level of a fuel cell, thus demanding exceptionally endergonic fuel-separation modules that require multiple-steps and extreme temperatures and pressures (-85 & DEG;C to -15 & DEG;C and 7 to 30 bar). These contribute to a serious energy imbalance between the key steps of hydrogen production and hydrogen utilization. By directly harvesting the energy of water formation, we show spontaneous fuel purification under truly ambient weather conditions that include the open-air environment, wherein contaminated hydrogen streams can be refined to nearly 99.9% purity in a single-step at an expenditure of & SIM;24 kJ mol(H2)(-1) and with an electrical energy output of & SIM;90 kJ mol(H2)(-1). As a major leap in the hydrogen economy, a laboratory-level prototype can spontaneously generate & SIM;99.4% pure hydrogen in a single-step, even from a quaternary mixture of impurities that include hydrocarbons, CO2 and N-2.

Authors

I am an author on this paper
Click your name to claim this paper and add it to your profile.

Reviews

Primary Rating

4.8
Not enough ratings

Secondary Ratings

Novelty
-
Significance
-
Scientific rigor
-
Rate this paper

Recommended

No Data Available
No Data Available