Magnesium-manganese oxides for high temperature thermochemical energy storage

Kelvin Randhir; Keith King; Nathan Rhodes; Like Li; David Hahn; Renwei Mei; Nicholas AuYeung; James Klausner

doi:10.1016/j.est.2018.11.024

Magnesium-manganese oxides for high temperature thermochemical energy storage

Kelvin Randhir, Keith King, Nathan Rhodes, Like Li, David Hahn, Renwei Mei, Nicholas AuYeung, James Klausner

Research output: Contribution to journal › Article › peer-review

64 Scopus citations

Abstract

The reactive stability and energy density of magnesium-manganese oxides for high-temperature thermochemical energy storage have been investigated. Three variations of material with molar ratios of manganese to magnesium of 2/3, 1/1, and 2/1 were prepared using solid-state reaction synthesis and were tested for thermochemical reactive stability and energy storage capability. Results show that oxygen released and absorbed (standard cm³ g⁻¹) by the materials remains unchanged over 20 cycles when cycled between 1200 and 1500 °C under an oxygen partial pressure (P_O2) of 0.2 atm, indicating excellent reactive stability at high temperatures. Additional confirmation of reactive stability was obtained through testing over 10 energy storage cycles between 1000 and 1500 °C. The energy density of the material between 1000 and 1500 °C was determined through a combination of acid-solution calorimetry and drop calorimetry. The total volumetric energy densities (chemical, phase change, and sensible) obtained for samples of Mn/Mg of 2/3, 1/1, and 2/1 cycled between 1000 and 1500 °C are 1596, 1626 and 1654 MJ m^-3, respectively.

Original language	English (US)
Pages (from-to)	599-610
Number of pages	12
Journal	Journal of Energy Storage
Volume	21
DOIs	https://doi.org/10.1016/j.est.2018.11.024
State	Published - Feb 2019
Externally published	Yes

Keywords

Energy density
Thermal reduction
Thermochemical energy storage

ASJC Scopus subject areas

Renewable Energy, Sustainability and the Environment
Energy Engineering and Power Technology
Electrical and Electronic Engineering

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10.1016/j.est.2018.11.024

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title = "Magnesium-manganese oxides for high temperature thermochemical energy storage",

abstract = "The reactive stability and energy density of magnesium-manganese oxides for high-temperature thermochemical energy storage have been investigated. Three variations of material with molar ratios of manganese to magnesium of 2/3, 1/1, and 2/1 were prepared using solid-state reaction synthesis and were tested for thermochemical reactive stability and energy storage capability. Results show that oxygen released and absorbed (standard cm3 g−1) by the materials remains unchanged over 20 cycles when cycled between 1200 and 1500 °C under an oxygen partial pressure (PO2) of 0.2 atm, indicating excellent reactive stability at high temperatures. Additional confirmation of reactive stability was obtained through testing over 10 energy storage cycles between 1000 and 1500 °C. The energy density of the material between 1000 and 1500 °C was determined through a combination of acid-solution calorimetry and drop calorimetry. The total volumetric energy densities (chemical, phase change, and sensible) obtained for samples of Mn/Mg of 2/3, 1/1, and 2/1 cycled between 1000 and 1500 °C are 1596, 1626 and 1654 MJ m-3, respectively.",

keywords = "Energy density, Thermal reduction, Thermochemical energy storage",

author = "Kelvin Randhir and Keith King and Nathan Rhodes and Like Li and David Hahn and Renwei Mei and Nicholas AuYeung and James Klausner",

note = "Publisher Copyright: {\textcopyright} 2018 Elsevier Ltd",

year = "2019",

month = feb,

doi = "10.1016/j.est.2018.11.024",

language = "English (US)",

volume = "21",

pages = "599--610",

journal = "Journal of Energy Storage",

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T1 - Magnesium-manganese oxides for high temperature thermochemical energy storage

AU - Randhir, Kelvin

AU - King, Keith

AU - Rhodes, Nathan

AU - Li, Like

AU - Hahn, David

AU - Mei, Renwei

AU - AuYeung, Nicholas

AU - Klausner, James

PY - 2019/2

Y1 - 2019/2

N2 - The reactive stability and energy density of magnesium-manganese oxides for high-temperature thermochemical energy storage have been investigated. Three variations of material with molar ratios of manganese to magnesium of 2/3, 1/1, and 2/1 were prepared using solid-state reaction synthesis and were tested for thermochemical reactive stability and energy storage capability. Results show that oxygen released and absorbed (standard cm3 g−1) by the materials remains unchanged over 20 cycles when cycled between 1200 and 1500 °C under an oxygen partial pressure (PO2) of 0.2 atm, indicating excellent reactive stability at high temperatures. Additional confirmation of reactive stability was obtained through testing over 10 energy storage cycles between 1000 and 1500 °C. The energy density of the material between 1000 and 1500 °C was determined through a combination of acid-solution calorimetry and drop calorimetry. The total volumetric energy densities (chemical, phase change, and sensible) obtained for samples of Mn/Mg of 2/3, 1/1, and 2/1 cycled between 1000 and 1500 °C are 1596, 1626 and 1654 MJ m-3, respectively.

AB - The reactive stability and energy density of magnesium-manganese oxides for high-temperature thermochemical energy storage have been investigated. Three variations of material with molar ratios of manganese to magnesium of 2/3, 1/1, and 2/1 were prepared using solid-state reaction synthesis and were tested for thermochemical reactive stability and energy storage capability. Results show that oxygen released and absorbed (standard cm3 g−1) by the materials remains unchanged over 20 cycles when cycled between 1200 and 1500 °C under an oxygen partial pressure (PO2) of 0.2 atm, indicating excellent reactive stability at high temperatures. Additional confirmation of reactive stability was obtained through testing over 10 energy storage cycles between 1000 and 1500 °C. The energy density of the material between 1000 and 1500 °C was determined through a combination of acid-solution calorimetry and drop calorimetry. The total volumetric energy densities (chemical, phase change, and sensible) obtained for samples of Mn/Mg of 2/3, 1/1, and 2/1 cycled between 1000 and 1500 °C are 1596, 1626 and 1654 MJ m-3, respectively.

KW - Energy density

KW - Thermal reduction

KW - Thermochemical energy storage

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JO - Journal of Energy Storage

JF - Journal of Energy Storage

ER -

Magnesium-manganese oxides for high temperature thermochemical energy storage

Abstract

Keywords

ASJC Scopus subject areas

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