Calorimetric Measurements of Ga-Li System by Direct Reaction Method
PBN-AR
Instytucja
Instytut Metalurgii i Inżynierii Materiałowej im. Aleksandra Krupkowskiego Polskiej Akademii Nauk
Informacje podstawowe
Główny język publikacji
en
Czasopismo
ARCHIVES OF METALLURGY AND MATERIALS (30pkt w roku publikacji)
ISSN
1733-3490
EISSN
Wydawca
POLISH ACAD SCIENCES COMMITTEE METALLURGY and INSTITUTE OF METALLURGY AND MATERIALS SCIENCE
DOI
Rok publikacji
2017
Numer zeszytu
2
Strony od-do
919-926
Numer tomu
62
Identyfikator DOI
Liczba arkuszy
0,50
Autorzy
(liczba autorów: 1)
Streszczenia
Język
en
Treść
The direct reaction calorimetric method was used for the determination of the formation enthalpy of alloys which concentrations correspond to the: Ga7Li2, Ga9Li5, GaLi, Ga4Li5, Ga2Li3, and GaLi2 intermetallic phases. The obtained experimental values of the formation enthalpy were: –18.1 ±0.8 kJ/mol at., –26.5 ±0.3 kJ/mol at., –34.7 ±0.3 kJ/mol at., –33.5 ±0.5 kJ/mol at., –32.8 ±0.3 kJ/mol at. and –24.6 ±1.4 kJ/mol at., respectively. After the calorimetric measurements, all the samples were checked by way of X-ray diffraction investigations to confirm the structure of the measured alloys. All the measured values of the formation enthalpy of the Ga-Li alloys were compared with literature data and the data calculated with use of the Miedema model. Keywords: Gallium-lithium system; Ga-Li; calorimetry; thermochemistry 1. Introduction Currently, a hugely important issue is a more effective storage of energy. The most popular Li-Ion batteries are the key for portable electronic devices. However, scientists are still searching for alternative materials which offer better usable parameters. Lithium gallium alloys are promising anode materials for rechargeable batteries. For example, one of the phases from the Ga-Li system, the GaLi2 phase, has the theoretical capacity around 750 mAhg–1 [1], that is about twice as high as the theoretical capacity of graphite, which is the most commonly used negative electrode in Li-ion batteries [2]. It could also be used as semiconductor materials for electronics. The first experimental investigation of the Ga-Li system began in 1956, when Schneider and Hilmer [3] measured the enthalpy of fusion of the LiGa phase with the use of the drop calorimetry technique. In 1970, Thümmel and Klemm [4] confirmed the existence
Cechy publikacji
Inżynieria materiałowa
Metalurgia
Materials science
Metallurgy
Original article
Original article presents the results of original research or experiment.
Oryginalny artykuł naukowy
Oryginalny artykuł naukowy przedstawia rezultaty oryginalnych badań naukowych lub eksperymentu.
Inne
System-identifier
PBN-R:827371
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