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Multiscale Interfacial Strategy to Engineer Mixed Metal-Oxide Anodes toward Enhanced Cycling Efficiency
Northwestern Polytech Univ, Sch Mat Sci & Engn, State Key Lab Solidificat Proc, Ctr Nano Energy Mat, Xian 710072, Shaanxi, Peoples R China.
Stockholm Univ, Arrhenius Lab, Dept Mat & Environm Chem, SE-10691 Stockholm, Sweden.
Northwestern Polytech Univ, Sch Mat Sci & Engn, State Key Lab Solidificat Proc, Ctr Nano Energy Mat, Xian 710072, Shaanxi, Peoples R China.
Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Kemiska sektionen, Institutionen för kemi - Ångström, Strukturkemi.ORCID-id: 0000-0003-4440-2952
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2018 (engelsk)Inngår i: ACS Applied Materials and Interfaces, ISSN 1944-8244, E-ISSN 1944-8252, Vol. 10, nr 23, s. 20095-20105Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Interconnected macro/mesoporous structures of mixed metal oxide (MMO) are developed on nickel foam as freestanding anodes for Li-ion batteries. The sustainable production is realized via a wet chemical etching process with bio-friendly chemicals. By means of divalent iron doping during an in situ recrystallization process, the as-developed MMO anodes exhibit enhanced levels of cycling efficiency. Furthermore, this atomic-scale modification coherently synergizes with the encapsulation layer across a micrometer scale. During this step, we develop a quasi-gel-state tri-copolymer, i.e., F127-resorcinol-melamine, as the N-doped carbon source to regulate the interfacial chemistry of the MMO electrodes. Electrochemical tests of the modified FexN1-xO@NC-NiF anode in both half-cell and full-cell configurations unravel the favorable suppression of the irreversible capacity loss and satisfactory cyclability at the high rates. This study highlights a proof-of-concept modification strategy across multiple scales to govern the interfacial chemical process of the electrodes toward better reversibility.

sted, utgiver, år, opplag, sider
AMER CHEMICAL SOC , 2018. Vol. 10, nr 23, s. 20095-20105
Emneord [en]
iron doping, nickel oxide, interfacial chemistry, cycling efficiency, lithium-ion storage
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Identifikatorer
URN: urn:nbn:se:uu:diva-358523DOI: 10.1021/acsami.8b02908ISI: 000435525100089PubMedID: 29782146OAI: oai:DiVA.org:uu-358523DiVA, id: diva2:1244822
Tilgjengelig fra: 2018-09-03 Laget: 2018-09-03 Sist oppdatert: 2018-09-03bibliografisk kontrollert

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