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Lithium storage in ...
Lithium storage in amorphous TiNi hydride : Electrode for rechargeable lithium-ion batteries
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Bououdina, M. (author)
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Oumellal, Y. (author)
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Dupont, L. (author)
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Aymard, L. (author)
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Al-Gharni, H. (author)
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Al-Hajry, A. (author)
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- Maark, T. A. (author)
- Uppsala universitet,Institutionen för fysik och astronomi,Condensed Matter Theory Grp
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- De Sarkar, Abid (author)
- KTH,Tillämpad materialfysik
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- Ahuja, Rajeev (author)
- KTH,Uppsala universitet,Materialteori,Condensed Matter Theory Grp,Tillämpad materialfysik
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Deshpande, M. D. (author)
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- Qian, Zhao (author)
- KTH,Uppsala universitet,Institutionen för fysik och astronomi,Condensed Matter Theory Grp,Tillämpad materialfysik
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Rahane, A. B. (author)
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(creator_code:org_t)
- Elsevier BV, 2013
- 2013
- English.
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In: Materials Chemistry and Physics. - : Elsevier BV. - 0254-0584 .- 1879-3312. ; 141:1, s. 348-354
- Related links:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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https://urn.kb.se/re...
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Abstract
Subject headings
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- In this study, amorphous TiNi phase was successfully prepared using mechanically milling for a very short time of 8 h. HRTEM confirms the formation of amorphous phase with the presence of nanocrystalline Fe particles. After hydrogenation (30 bars of H-2 for a duration of 2 h), the electrochemical reaction shows that TiNi hydride/Li cell discharges at a current of one Li for 10 h between 3 V and 0.005 V. The discharge of TiNiH electrode around x = 1 Li corresponds to a capacity of 251 mAh g(-1) and a hydride composition of TiNiH1.0 at an average voltage of 0.4 V. Ex-situ X-ray diffraction pattern collected at the end of the discharge shows a mixture of amorphous TiNi compound and LiH. A general mechanism for the electrochemical reaction is then proposed: alpha-TiNiH + Li+ + e(-) -> alpha-TiNi + LiH. The results from DFT calculations yield an average cell voltage of 0.396 V, which is in good agreement with the experimental pseudo-plateau occurring at 0.4 V.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Materialteknik -- Annan materialteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering -- Other Materials Engineering (hsv//eng)
Keyword
- Amorphous materials
- Powder metallurgy
- Electron microscopy
- Powder diffraction
- Ab initio calculations
- Electrochemical properties
Publication and Content Type
- ref (subject category)
- art (subject category)
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- By the author/editor
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Bououdina, M.
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Oumellal, Y.
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Dupont, L.
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Aymard, L.
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Al-Gharni, H.
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Al-Hajry, A.
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show more...
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Maark, T. A.
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De Sarkar, Abid
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Ahuja, Rajeev
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Deshpande, M. D.
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Qian, Zhao
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Rahane, A. B.
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show less...
- About the subject
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- ENGINEERING AND TECHNOLOGY
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ENGINEERING AND ...
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and Materials Engine ...
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and Other Materials ...
- Articles in the publication
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Materials Chemis ...
- By the university
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Uppsala University
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Royal Institute of Technology