A and B site Co-doping of CaMnO3: a route to enhanced heat storage properties

被引:3
|
作者
Mastronardo, Emanuela [1 ,2 ]
Qian, Xin [3 ]
Coronado, Juan M. [2 ]
Haile, Sossina M. [3 ]
机构
[1] Univ Messina, Engn Dept, Cda Dio, I-98126 Messina, Italy
[2] Inst Catalisis & Petroleoquim, CSIC, C-Marie Curie, 2, Madrid 28049, Spain
[3] Northwestern Univ, Mat Sci & Engn, 2220 Campus Dr Cook Hall, Evanston, IL 60208 USA
基金
美国国家科学基金会;
关键词
THERMOCHEMICAL ENERGY-STORAGE; OXIDE REDOX SYSTEMS; PEROVSKITE OXIDES; CYCLES; NONSTOICHIOMETRY; THERMODYNAMICS; EXPLOITATION; STABILITY; CHEMISTRY; FE;
D O I
10.1039/d2ta07779e
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
The successful commercialization of concentrating solar power (CSP) plants requires effective energy storage for the supply of power on demand during solar transients. High-temperature thermal energy storage (>= 700 degrees C up to 1200 degrees C) has the potential to address storage needs and power capacity owing to the efficiency gains from a high-temperature operation. Recently, doped CaMnO<INF>3</INF> has been identified as a promising candidate for thermochemical heat storage in CSP plants. Herein, we aim at tuning the CaMnO<INF>3</INF> heat storage temperature window and enhancing the heat storage properties beyond that of singly doped compositions by co-doping with equal amounts of La and Fe on the A and B sites, respectively, ((La<INF>x</INF>Ca<INF>1-x</INF>)(Fe<INF>x</INF>Mn<INF>1-x</INF>)O<INF>3</INF>). Two doping levels are investigated (x = 0.05 and 0.10). X-ray absorption spectroscopy and diffraction studies revealed that in both materials, Fe and Mn adopt, respectively, the 3+ and 4+ oxidation states under ambient conditions and the dopants are incorporated into the intended sites. Interestingly, the heat storage capacity did not vary monotonically with dopant content. The highest heat storage capacity was attained from La<INF>0.05</INF>Ca<INF>0.95</INF>Fe<INF>0.05</INF>M<INF>0.95</INF>O<INF>3-delta</INF>. This surprising result is a consequence of the substantial large extent of reduction enabled by the slightly lower enthalpy than that of La<INF>0.1</INF>Ca<INF>0.9</INF>Fe<INF>0.1</INF>Mn<INF>0.9</INF>O<INF>3-delta</INF>. Under technologically relevant conditions, operating over a temperature window value ranging from 700 to 1200 degrees C and under an oxygen partial pressure of about 10-3 atm, the thermochemical heat storage capacities of La<INF>0.05</INF>Ca<INF>0.95</INF>Fe<INF>0.05</INF>Mn<INF>0.95</INF>O<INF>3 delta</INF> and La<INF>0.1</INF>Ca<INF>0.9</INF>Fe<INF>0.1</INF>Mn<INF>0.9</INF>O<INF>3-delta</INF> are 378.5 +/- 1.0 kJ kg<INF>ABO<INF>3</INF></INF>-1 and 282.3 +/- 1.5 kJ kg<INF>ABO<INF>3</INF></INF>-1, respectively, and exceed the values not only of the undoped material but also of other singly doped analogs for the first material. Furthermore, with respect to the singly Fe-doped CaMnO<INF>3</INF>, we narrowed the operating temperature range from 400-1200 degrees C to 700-1200 degrees C, which is the target temperature for the CSP plants. Hence, we demonstrated that by co-doping, it is possible to tailor reduction enthalpy and extent together with the operating temperature range.
引用
收藏
页码:8858 / 8872
页数:15
相关论文
共 50 条
  • [11] Effects of Gd doping on microwave absorption properties and mechanism for CaMnO3 perovskites
    Liu, Li
    Luo, Zhou
    Zhao, Bo
    Li, Ziao
    Zhang, Chenru
    Chen, Ziwen
    Jiang, Jianing
    Deng, Longhui
    Cao, Xueqiang
    Chen, Zhiwen
    CERAMICS INTERNATIONAL, 2023, 49 (14) : 23499 - 23509
  • [12] Effects of praseodymium doping on thermoelectric transport properties of CaMnO3 compound system
    Zhang Feipeng
    Niu Baocheng
    Zhang Kunshu
    Zhang Xin
    Lu Qingmei
    Zhang Jiuxing
    JOURNAL OF RARE EARTHS, 2013, 31 (09) : 885 - 890
  • [13] Effects of praseodymium doping on thermoelectric transport properties of CaMnO3 compound system
    张飞鹏
    牛保成
    张坤书
    张忻
    路清梅
    张久兴
    JournalofRareEarths, 2013, 31 (09) : 885 - 890
  • [14] Influence of Ce doping on Structural, Magnetic and Transport Properties of CaMnO3 Perovskite
    Mansuri, Irfan
    Choudhary, Dinesh
    Sen, Sonu
    Shaikh, Mohammed Wasim
    PROF. DINESH VARSHNEY MEMORIAL NATIONAL CONFERENCE ON PHYSICS AND CHEMISTRY OF MATERIALS (NCPCM 2018), 2019, 2100
  • [15] Doping induced electronic structure and estimated thermoelectric properties of CaMnO3 system
    Zhang, F. P.
    Zhang, X.
    Lu, Q. M.
    Zhang, J. X.
    Liu, Y. Q.
    Fan, R. F.
    Zhang, G. Z.
    PHYSICA B-CONDENSED MATTER, 2011, 406 (6-7) : 1258 - 1262
  • [16] Effect of A-site and B-site ion substitution on the electrical and thermoelectric properties of nanostructured perovskite CaMnO3
    Mary, S. Berbeth
    Mohan, K. S.
    Krishnan, M. Muthu
    JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS, 2024, 35 (08)
  • [17] Effect of A-site and B-site ion substitution on the electrical and thermoelectric properties of nanostructured perovskite CaMnO3
    S. Berbeth Mary
    K. S. Mohan
    M. Muthu Krishnan
    Journal of Materials Science: Materials in Electronics, 2024, 35
  • [18] Effects of Sr doping on electronic and thermoelectrical transport properties of CaMnO3 based oxide
    Zhang Fei-Peng
    Zhang Jing-Wen
    Zhang Jiu-Xing
    Yang Xin-Yu
    Lu Qing-Mei
    Zhang Xin
    ACTA PHYSICA SINICA, 2017, 66 (24)
  • [19] Enhanced dielectric and microwave absorption properties of CaMnO3 powders by Sr doping in the 8.2-18 GHz band
    Liu, Yin
    Zhu, Dongmei
    Chai, Xia
    Qing, Yuchang
    Zhou, Wancheng
    CERAMICS INTERNATIONAL, 2021, 47 (10) : 13339 - 13343
  • [20] Remarkable variation in microstructural, thermoelectric, and magnetic properties of CaMnO3 through Ce doping
    Gursul, M.
    Cetin, G.
    Ergin, I. .
    Korkmaz, L.
    Ozcelik, B.
    Torres, M. A.
    Madre, M. A.
    Sotelo, A.
    MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS, 2024, 299