An assessment of the use of fuel chemicals synthesized from captured carbon dioxide for renewable electricity storage

doi:10.3969/j.issn.2095-4239.2016.01.009

Abstract

Abstract: This article reviews recent worldwide developments in the storage of renewable electricity using fuel chemicals synthesized from captured carbon dioxide. The energy costs and exergy flows are briefly analyzed by mass and energy balance calculations and simulation methods to assess energy efficiency of methanol as an electricity storage vector in comparison with methane and hydrogen. Hydrogen energy storage has the shortest process with the highest efficiency, however, with no contribution to carbon sequestration. In term of carbon sequestration, electricity storage using methanol has a better atom-efficiency than methane which has higher calorific value and chemical reaction heat. The loss of energy efficiency is mainly caused by hydrogen electrolysis.

Key words: carbon dioxide, methanol, methane, hydrogen, energy storage, renewable energy

CLC Number:

X382

SONG Pengxiang, ZHAO Bo, YANG Cenyu, WANG Le, JIN Yi, YANG Shihui. An assessment of the use of fuel chemicals synthesized from captured carbon dioxide for renewable electricity storage[J]. Energy Storage Science and Technology, 2016, 5(1): 78-84.

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