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(WFRF:(Menon Ashok S.)) pers:(Salazar Alvarez German)
 

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Synthetic Pathway Determines the Nonequilibrium Crystallography of Li- and Mn-Rich Layered Oxide Cathode Materials

Menon, Ashok S. (author)
Uppsala universitet,Strukturkemi
Ulusoy, Seda (author)
Uppsala universitet,Fasta tillståndets fysik
Ojwang, Dickson O. (author)
Uppsala universitet,Strukturkemi
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Riekehr, Lars (author)
Uppsala universitet,Oorganisk kemi,Solcellsteknik,Fasta tillståndets elektronik
Didier, Christophe (author)
Australian Nucl Sci & Technol Org, Australian Ctr Neutron Scattering, Kirrawee Dc, NSW 2232, Australia.;Univ New South Wales, Sch Chem, Sydney, NSW 2052, Australia.
Peterson, Vanessa K. (author)
Australian Nucl Sci & Technol Org, Australian Ctr Neutron Scattering, Kirrawee Dc, NSW 2232, Australia.;Univ Wollongong, Inst Superconducting & Elect Mat, Fac Engn, Wollongong, NSW 2522, Australia.
Salazar-Alvarez, German (author)
Uppsala universitet,Fasta tillståndets fysik
Svedlindh, Peter (author)
Uppsala universitet,Fasta tillståndets fysik
Edström, Kristina, Professor, 1958- (author)
Uppsala universitet,Strukturkemi
Gómez, Cesar Pay, Docent, 1974- (author)
Uppsala universitet,Strukturkemi
Brant, William (author)
Uppsala universitet,Strukturkemi
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 (creator_code:org_t)
2021-02-10
2021
English.
In: ACS Applied Energy Materials. - : American Chemical Society (ACS). - 2574-0962. ; 4:2, s. 1924-1935
  • Journal article (peer-reviewed)
Abstract Subject headings
Close  
  • Li- and Mn-rich layered oxides show significant promise as electrode materials for future Li-ion batteries. However, an accurate description of its crystallography remains elusive, with both single-phase solid solution and multiphase structures being proposed for high performing materials such as Li1.2Mn0.54Ni0.13Co0.13O2. Herein, we report the synthesis of single- and multiphase variants of this material through sol-gel and solid-state methods, respectively, and demonstrate that its crystallography is a direct consequence of the synthetic route and not necessarily an inherent property of the composition, as previously argued. This was accomplished via complementary techniques that probe the bulk and local structure followed by in situ methods to map the synthetic progression. As the electrochemical performance and anionic redox behavior are often rationalized on the basis of the presumed crystal structure, clarifying the structural ambiguities is an important step toward harnessing its potential as an electrode material.

Subject headings

NATURVETENSKAP  -- Kemi -- Materialkemi (hsv//swe)
NATURAL SCIENCES  -- Chemical Sciences -- Materials Chemistry (hsv//eng)

Keyword

Li- and Mn-rich layered oxides
Li-ion battery cathodes
synthesis-structure relationships
anionic redox materials
stacking faulted materials

Publication and Content Type

ref (subject category)
art (subject category)

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