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  1. Article: Beyond the Nobel recognition - To a cleaner sustainable future.

    Whittingham, M Stanley

    Journal of power sources

    2020  Volume 473, Page(s) 228574

    Keywords covid19
    Language English
    Publishing date 2020-07-27
    Publishing country Switzerland
    Document type Editorial
    ZDB-ID 1491915-1
    ISSN 1873-2755 ; 0378-7753
    ISSN (online) 1873-2755
    ISSN 0378-7753
    DOI 10.1016/j.jpowsour.2020.228574
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Lithium Batteries: 50 Years of Advances to Address the Next 20 Years of Climate Issues.

    Whittingham, M Stanley

    Nano letters

    2020  Volume 20, Issue 12, Page(s) 8435–8437

    Language English
    Publishing date 2020-11-23
    Publishing country United States
    Document type Editorial ; Research Support, U.S. Gov't, Non-P.H.S.
    ISSN 1530-6992
    ISSN (online) 1530-6992
    DOI 10.1021/acs.nanolett.0c04347
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  3. Article ; Online: Special Editorial Perspective: Beyond Li-Ion Battery Chemistry.

    Whittingham, M Stanley

    Chemical reviews

    2020  Volume 120, Issue 14, Page(s) 6328–6330

    Language English
    Publishing date 2020-07-21
    Publishing country United States
    Document type Editorial
    ZDB-ID 207949-5
    ISSN 1520-6890 ; 0009-2665
    ISSN (online) 1520-6890
    ISSN 0009-2665
    DOI 10.1021/acs.chemrev.0c00438
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: Introduction: batteries.

    Whittingham, M Stanley

    Chemical reviews

    2014  Volume 114, Issue 23, Page(s) 11413

    Language English
    Publishing date 2014-12-10
    Publishing country United States
    Document type Editorial ; Introductory Journal Article
    ZDB-ID 207949-5
    ISSN 1520-6890 ; 0009-2665
    ISSN (online) 1520-6890
    ISSN 0009-2665
    DOI 10.1021/cr500639y
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  5. Article ; Online: Ultimate limits to intercalation reactions for lithium batteries.

    Whittingham, M Stanley

    Chemical reviews

    2014  Volume 114, Issue 23, Page(s) 11414–11443

    Language English
    Publishing date 2014-12-10
    Publishing country United States
    Document type Journal Article
    ZDB-ID 207949-5
    ISSN 1520-6890 ; 0009-2665
    ISSN (online) 1520-6890
    ISSN 0009-2665
    DOI 10.1021/cr5003003
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  6. Article: Oxygen Loss in Layered Oxide Cathodes for Li-Ion Batteries: Mechanisms, Effects, and Mitigation

    Zhang, Hanlei / Liu, Hao / Piper, Louis F. J. / Whittingham, M. Stanley / Zhou, Guangwen

    Chemical reviews. 2022 Jan. 13, v. 122, no. 6

    2022  

    Abstract: Layered lithium transition metal oxides derived from LiMO₂ (M = Co, Ni, Mn, etc.) have been widely adopted as the cathodes of Li-ion batteries for portable electronics, electric vehicles, and energy storage. Oxygen loss in the layered oxides is one of ... ...

    Abstract Layered lithium transition metal oxides derived from LiMO₂ (M = Co, Ni, Mn, etc.) have been widely adopted as the cathodes of Li-ion batteries for portable electronics, electric vehicles, and energy storage. Oxygen loss in the layered oxides is one of the major factors leading to cycling-induced structural degradation and its associated fade in electrochemical performance. Herein, we review recent progress in understanding the phenomena of oxygen loss and the resulting structural degradation in layered oxide cathodes. We first present the major driving forces leading to the oxygen loss and then describe the associated structural degradation resulting from the oxygen loss. We follow this analysis with a discussion of the kinetic pathways that enable oxygen loss, and then we address the resulting electrochemical fade. Finally, we review the possible approaches toward mitigating oxygen loss and the associated electrochemical fade as well as detail novel analytical methods for probing the oxygen loss.
    Keywords electrochemistry ; electronics ; energy ; lithium ; oxygen
    Language English
    Dates of publication 2022-0113
    Size p. 5641-5681.
    Publishing place American Chemical Society
    Document type Article
    ZDB-ID 207949-5
    ISSN 1520-6890 ; 0009-2665
    ISSN (online) 1520-6890
    ISSN 0009-2665
    DOI 10.1021/acs.chemrev.1c00327
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  7. Article ; Online: Oxygen Loss in Layered Oxide Cathodes for Li-Ion Batteries: Mechanisms, Effects, and Mitigation.

    Zhang, Hanlei / Liu, Hao / Piper, Louis F J / Whittingham, M Stanley / Zhou, Guangwen

    Chemical reviews

    2022  Volume 122, Issue 6, Page(s) 5641–5681

    Abstract: Layered lithium transition metal oxides derived from ... ...

    Abstract Layered lithium transition metal oxides derived from LiMO
    Language English
    Publishing date 2022-01-13
    Publishing country United States
    Document type Journal Article
    ZDB-ID 207949-5
    ISSN 1520-6890 ; 0009-2665
    ISSN (online) 1520-6890
    ISSN 0009-2665
    DOI 10.1021/acs.chemrev.1c00327
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  8. Article ; Online: Conditioning the Surface and Bulk of High-Nickel Cathodes with a Nb Coating: An

    Xin, Fengxia / Zhou, Hui / Bai, Jianming / Wang, Feng / Whittingham, M Stanley

    The journal of physical chemistry letters

    2021  Volume 12, Issue 33, Page(s) 7908–7913

    Abstract: Surface coating is commonly employed by industries to improve the cycling and thermal stability of high-nickel (Ni) transition metal (TM) layered cathodes for their practical use in lithium-ion batteries. Niobium (Nb) coating or substitution has been ... ...

    Abstract Surface coating is commonly employed by industries to improve the cycling and thermal stability of high-nickel (Ni) transition metal (TM) layered cathodes for their practical use in lithium-ion batteries. Niobium (Nb) coating or substitution has been shown to be effective in stabilizing LiNi
    Language English
    Publishing date 2021-08-12
    Publishing country United States
    Document type Journal Article
    ISSN 1948-7185
    ISSN (online) 1948-7185
    DOI 10.1021/acs.jpclett.1c01785
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  9. Article ; Online: Can Multielectron Intercalation Reactions Be the Basis of Next Generation Batteries?

    Whittingham, M Stanley / Siu, Carrie / Ding, Jia

    Accounts of chemical research

    2018  Volume 51, Issue 2, Page(s) 258–264

    Abstract: Intercalation compounds form the basis of essentially all lithium rechargeable batteries. They exhibit a wide range of electronic and crystallographic structures. The former varies from metallic conductors to excellent insulators. The latter often have ... ...

    Abstract Intercalation compounds form the basis of essentially all lithium rechargeable batteries. They exhibit a wide range of electronic and crystallographic structures. The former varies from metallic conductors to excellent insulators. The latter often have layer structures or have open tunnel structures that can act as the hosts for the intercalation of a wide range of metal cation and other guest species. They are fascinating materials with almost infinitely variable properties, with the crystal structure controlling the identity and the amount of the guest species that may be intercalated and subsequently removed. The electronic structure controls not only the degree of electron transfer to the host, but also defines the degree of the electrostatic interactions a mobile ion experiences; thus, a metallic host will provide a minimizing of those interactions, whereas in an ionic lattice the interactions will be much greater and the mobile ion will experience a much higher activation energy for motion. This becomes more important for multivalent cations such as Mg
    Language English
    Publishing date 2018-01-12
    Publishing country United States
    Document type Journal Article ; Research Support, U.S. Gov't, Non-P.H.S.
    ZDB-ID 1483291-4
    ISSN 1520-4898 ; 0001-4842
    ISSN (online) 1520-4898
    ISSN 0001-4842
    DOI 10.1021/acs.accounts.7b00527
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  10. Article ; Online: Oxygen-Loss-Induced Structural Degradation in ε‑LiVOPO₄

    Zhang, Hanlei / Zhou, Hui / Deng, Zhi / Luo, Langli / Ong, Shyue Ping / Wang, C. / Xin, Huolin / Whittingham, M. Stanley / Zhou, Guangwen

    ACS Applied Materials & Interfaces. 2022 Dec. 20, v. 15, no. 1 p.963-972

    2022  

    Abstract: The ε-LiVOPO₄ cathode for Li-ion batteries has attracted wide attention with its multivalent electronic states and improved discharge capacity of over 300 mAh/g. Oxygen loss stands as a potential cause for structural degradations of the ε-LiVOPO₄ cathode ...

    Abstract The ε-LiVOPO₄ cathode for Li-ion batteries has attracted wide attention with its multivalent electronic states and improved discharge capacity of over 300 mAh/g. Oxygen loss stands as a potential cause for structural degradations of the ε-LiVOPO₄ cathode and its derivatives but has been barely studied. Through in situ environmental transmission electron microscopy, we probe lattice oxygen loss and the associated structural degradations by spatially and temporally resolving the atomic-scale structural dynamics and phase transformation pathways in ε-LiVOPO₄. We demonstrate that the mild oxygen loss at 400 °C induces a topotactic phase transformation of ε-LiVOPO₄ → α-Li₃V₂(PO₄)₃ in the particle surface via a nucleation and growth mechanism, leading to the formation of a core-shell configuration. The phase transformation can be reversed by switching to an oxidizing environment, in which the α-Li₃V₂(PO₄)₃ is reoxidized to ε-LiVOPO₄. By contrast, oxygen loss at higher temperatures of 500 and 600 °C results in a high concentration of oxygen vacancies that subsequently induces irreversible structural damages including lattice amorphization and formation of nanocavities. This work illustrates the fundamental mechanisms governing the structural failure of oxide cathodes and underlines possible strategies to overcome such issues by exploiting environmental constraints.
    Keywords cathodes ; oxygen ; phase transition ; transmission electron microscopy ; battery ; TEM ; phase transformation ; degradation ; operando
    Language English
    Dates of publication 2022-1220
    Size p. 963-972.
    Publishing place American Chemical Society
    Document type Article ; Online
    ISSN 1944-8252
    DOI 10.1021/acsami.2c16896
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