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Hydrogen Exhaling Metal-H 2O Battery

18 Pages Posted: 29 Jan 2019 Sneak Peek Status: Review Complete

See all articles by Ravikumar Thimmappa

Ravikumar Thimmappa

Indian Institute of Science Education and Research - Department of Chemistry; Indian Institute of Science Education and Research - Centre for Energy Science

Alagar Raja Kottaichamy

Indian Institute of Science Education and Research - Department of Chemistry; Indian Institute of Science Education and Research - Centre for Energy Science

Roza Bouchal

University of Montpellier - Institut Charles Gerhardt Montpellier

Thamaraichelvan Marichelvam

Indian Institute of Science Education and Research - Department of Chemistry; Indian Institute of Science Education and Research - Centre for Energy Science

Musthafa Ottakam Thotiyl

Indian Institute of Science Education and Research - Department of Chemistry; Indian Institute of Science Education and Research - Centre for Energy Science

Olivier Fontaine

Indian Institute of Science Education and Research - Department of Chemistry; Indian Institute of Science Education and Research - Centre for Energy Science

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Abstract

Sustainable production and utilization of hydrogen or “hydrogen economy” offers a carbon neutral energy pathway for stabilizing global mean temperatures. However, molecular hydrogen production by state-of-the-art steam reforming is prohibitively expensive, often requiring high temperatures ≥ 200 degree celsius and high pressures ≥ 25 bar, eventually mitigating its environmental advantages. This steam reforming pathway is well-known to carbonize the hydrogen fuel stream beyond the tolerance levels to be directly utilized in a fuel cell, consequently; energy intensive purification modules are often inevitable. Here we show an unusual battery chemistry which can exhale pure molecular hydrogen during electricity generation with the net cell reaction being the oxidation of the metal anode and the reduction of H2O to H2 fuel at the electrocatalytic cathode. It comprises a non-noble metal anode, an aqueous electrolyte and a cathode that is active towards electrocatalytic H2 evolution. During the discharge, the fuel exhaling battery delivered a power density of ~75 mW/cm2 while evolving ~3730 μmoles/hour of H2 fuel. Coupling of battery and water electrolyzer in a single device offers an unprecedented pathway for realizing “hydrogen economy” as electric power is harnessed during hydrogen fuel generation as well as its utilization.

Keywords: Hydrogen economy, Hydrogen evolution reaction, Renewable energy resources, Aqueous metal battery, Fuel cells

Suggested Citation

Thimmappa, Ravikumar and Kottaichamy, Alagar Raja and Bouchal, Roza and Marichelvam, Thamaraichelvan and Thotiyl, Musthafa Ottakam and Fontaine, Olivier, Hydrogen Exhaling Metal-H 2O Battery (January 19, 2019). Available at SSRN: https://ssrn.com/abstract=3318942 or http://dx.doi.org/10.2139/ssrn.3318942
This is a paper under consideration at Cell Press and has not been peer-reviewed.

Ravikumar Thimmappa

Indian Institute of Science Education and Research - Department of Chemistry

Thriuvananthapuram
India

Indian Institute of Science Education and Research - Centre for Energy Science

Thriuvananthapuram
India

Alagar Raja Kottaichamy

Indian Institute of Science Education and Research - Department of Chemistry

Thriuvananthapuram
India

Indian Institute of Science Education and Research - Centre for Energy Science

Thriuvananthapuram
India

Roza Bouchal

University of Montpellier - Institut Charles Gerhardt Montpellier

Place Eugène Bataillon
34095 Montpellier Cedex 5
France

Thamaraichelvan Marichelvam

Indian Institute of Science Education and Research - Department of Chemistry

Thriuvananthapuram
India

Indian Institute of Science Education and Research - Centre for Energy Science

Thriuvananthapuram
India

Musthafa Ottakam Thotiyl

Indian Institute of Science Education and Research - Department of Chemistry ( email )

Thriuvananthapuram
India

Indian Institute of Science Education and Research - Centre for Energy Science ( email )

Thriuvananthapuram
India

Olivier Fontaine (Contact Author)

Indian Institute of Science Education and Research - Department of Chemistry ( email )

Thriuvananthapuram
India

Indian Institute of Science Education and Research - Centre for Energy Science ( email )

Thriuvananthapuram
India

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