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Reissig F, Lange MA, Haneke L, Placke T, Zeier WG, Winter M, Schmuch R, Gomez‐Martin A. Synergistic Effects of Surface Coating and Bulk Doping in Ni-Rich Lithium Nickel Cobalt Manganese Oxide Cathode Materials for High-Energy Lithium Ion Batteries. ChemSusChem 2022; 15:e202102220. [PMID: 34784118 PMCID: PMC9300204 DOI: 10.1002/cssc.202102220] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/15/2021] [Revised: 11/14/2021] [Indexed: 06/13/2023]
Abstract
Ni-rich layered oxide cathodes are promising candidates to satisfy the increasing energy demand of lithium-ion batteries for automotive applications. Thermal and cycling stability issues originating from increasing Ni contents are addressed by mitigation strategies such as elemental bulk substitution ("doping") and surface coating. Although both approaches separately benefit the cycling stability, there are only few reports investigating the combination of two of such approaches. Herein, the combination of Zr as common dopant in commercial materials with effective Li2 WO4 and WO3 coatings was investigated with special focus on the impact of different material processing conditions on structural parameters and electrochemical performance in nickel-cobalt-manganese (NCM) || graphite cells. Results indicated that the Zr4+ dopant diffusing to the surface during annealing improved the electrochemical performance compared to samples without additional coatings. This work emphasizes the importance to not only investigate the effect of individual dopants or coatings but also the influences between both.
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Affiliation(s)
- Friederike Reissig
- Helmholtz Institute Münster, IEK-12Forschungszentrum Jülich GmbHCorrensstr. 4648149MünsterGermany
| | - Martin Alexander Lange
- Department of ChemistryJohannes Gutenberg University MainzDuesbergweg 10–1455128MainzGermany
| | - Lukas Haneke
- MEET Battery Research CenterInstitute of Physical ChemistryUniversity of MünsterCorrensstr. 4648149MünsterGermany
| | - Tobias Placke
- MEET Battery Research CenterInstitute of Physical ChemistryUniversity of MünsterCorrensstr. 4648149MünsterGermany
| | - Wolfgang G. Zeier
- Helmholtz Institute Münster, IEK-12Forschungszentrum Jülich GmbHCorrensstr. 4648149MünsterGermany
- Institute of Physical ChemistryUniversity of MünsterCorrensstr. 3048149MünsterGermany
| | - Martin Winter
- Helmholtz Institute Münster, IEK-12Forschungszentrum Jülich GmbHCorrensstr. 4648149MünsterGermany
- MEET Battery Research CenterInstitute of Physical ChemistryUniversity of MünsterCorrensstr. 4648149MünsterGermany
| | - Richard Schmuch
- MEET Battery Research CenterInstitute of Physical ChemistryUniversity of MünsterCorrensstr. 4648149MünsterGermany
| | - Aurora Gomez‐Martin
- MEET Battery Research CenterInstitute of Physical ChemistryUniversity of MünsterCorrensstr. 4648149MünsterGermany
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Stathi P, Solakidou M, Deligiannakis Y. Lattice Defects Engineering in W-, Zr-doped BiVO 4 by Flame Spray Pyrolysis: Enhancing Photocatalytic O 2 Evolution. Nanomaterials (Basel) 2021; 11:501. [PMID: 33669461 PMCID: PMC7920441 DOI: 10.3390/nano11020501] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/28/2020] [Revised: 02/03/2021] [Accepted: 02/07/2021] [Indexed: 12/03/2022]
Abstract
A flame spray pyrolysis (FSP) method has been developed, for controlled doping of BiVO4 nanoparticles with W and Zr in tandem with the oxygen vacancies (Vo) of the BiVO4 lattice. Based on XPS and Raman data, we show that the nanolattice of W-BiVO4 and Zr-BiO4 can be controlled to achieve optimal O2 evolution from H2O photocatalysis. A synergistic effect is found between the W- and Zr-doping level in correlation with the Vo-concentration. FSP- made W-BiVO4 show optimal photocatalytic O2-production from H2O, up to 1020 μmol/(g × h) for 5%W-BiVO4, while the best performing Zr-doped achieved 970 μmol/(g × h) for 5%Zr-BiVO4. Higher W-or Zr-doping resulted in deterioration in photocatalytic O2-production from H2O. Thus, engineering of FSP-made BiVO4 nanoparticles by precise control of the lattice and doping-level, allows significant enhancement of the photocatalytic O2-evolution efficiency. Technology-wise, the present work demonstrates that flame spray pyrolysis as an inherently scalable technology, allows precise control of the BiVO4 nanolattice, to achieve significant improvement of its photocatalytic efficiency.
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Affiliation(s)
| | | | - Yiannis Deligiannakis
- Laboratory of Physics Chemistry of Materials & Environment, Department of Physics, University of Ioannina, 45110 Ioannina, Greece; (P.S.); (M.S.)
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Kurajica S, Mandić V, Panžić I, Gaboardi M, Mužina K, Lozančić A, Šipušić J, Munda IK, Višić L, Blagojević SL, Gigli L, Plaisier JR. In-Operando Diffraction and Spectroscopic Evaluation of Pure, Zr-, and Ce-Doped Vanadium Dioxide Thermochromic Films Derived via Glycolate Synthesis. Nanomaterials (Basel) 2020; 10:nano10122537. [PMID: 33348614 PMCID: PMC7766823 DOI: 10.3390/nano10122537] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/11/2020] [Revised: 12/10/2020] [Accepted: 12/15/2020] [Indexed: 11/16/2022]
Abstract
Pure and doped vanadia (VO2, V0.98Zr0.02O2, V0.98Ce0.02O2) samples were prepared by wet chemistry synthesis from vanadyl glycolate intermediate phase and tape casted into films. Combining in-operando grazing incidence synchrotron X-ray diffraction and Raman spectroscopy, we studied the structural evolution of the films under isothermal conditions. The setup allowed assessment of the thermochromic functionality with continuous monitoring of the monoclinic to tetragonal transition in pure and doped vanadia phases, responsible for the transmission and reflection of light in the infrared part of the solar spectrum. The materials characterisation by X-ray diffraction beamline (MCX) goniometer demonstrated ideal performance, combining flexible geometry, high resolution, and the potential to accommodate the multi-channel equipment for in-operando characterisation. This method proved viable for evaluating the relevant structural and physical, and thereof functional properties of these systems. We revealed that dopants reduce the transition temperature by 5 °C on average. The synthetic route of the films was held responsible for the observed phase separation. The more favourable behaviour of cerium-doped sample was attributed to cerium alkoxide behaviour. In addition, structural, microstructural, thermal, and spectroscopic characterisation on powder samples was performed to gain more insight into the development of the phases that are responsible for thermochromic features in a broader range of doping ratios. The influence of the dopants on the extent of the thermochromic transition (transmission to reflection hysteresis) was also evaluated using (micro) structural, thermal and spectroscopic methods of powder samples. Characterisations showed that zirconium doping in 2, 4, and 6 mol% significantly influenced the phase composition and morphology of the precursor. Vanadium oxides other than VO2 can easily crystallise; however, a thermal treatment regime that allowed crystallisation of VO2 as a single phase was established.
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Affiliation(s)
- Stanislav Kurajica
- Faculty of Chemical Engineering and Technology, University of Zagreb, Marulićev trg 20, 10000 Zagreb, Croatia; (S.K.); (K.M.); (A.L.); (J.Š.); (I.K.M.); (L.V.); (S.L.B.)
| | - Vilko Mandić
- Faculty of Chemical Engineering and Technology, University of Zagreb, Marulićev trg 20, 10000 Zagreb, Croatia; (S.K.); (K.M.); (A.L.); (J.Š.); (I.K.M.); (L.V.); (S.L.B.)
- Correspondence: ; Tel.: +385-1-4597-226
| | - Ivana Panžić
- Ruđer Bošković Institute, Bijenička Cesta 54, 10000 Zagreb, Croatia;
| | - Mattia Gaboardi
- Elettra Sincrotrone Trieste S.C.p.A., Strada Statale 14, 4149 Trieste, Italy; (M.G.); (L.G.); (J.R.P.)
| | - Katarina Mužina
- Faculty of Chemical Engineering and Technology, University of Zagreb, Marulićev trg 20, 10000 Zagreb, Croatia; (S.K.); (K.M.); (A.L.); (J.Š.); (I.K.M.); (L.V.); (S.L.B.)
| | - Ana Lozančić
- Faculty of Chemical Engineering and Technology, University of Zagreb, Marulićev trg 20, 10000 Zagreb, Croatia; (S.K.); (K.M.); (A.L.); (J.Š.); (I.K.M.); (L.V.); (S.L.B.)
- Ruđer Bošković Institute, Bijenička Cesta 54, 10000 Zagreb, Croatia;
| | - Juraj Šipušić
- Faculty of Chemical Engineering and Technology, University of Zagreb, Marulićev trg 20, 10000 Zagreb, Croatia; (S.K.); (K.M.); (A.L.); (J.Š.); (I.K.M.); (L.V.); (S.L.B.)
| | - Ivana Katarina Munda
- Faculty of Chemical Engineering and Technology, University of Zagreb, Marulićev trg 20, 10000 Zagreb, Croatia; (S.K.); (K.M.); (A.L.); (J.Š.); (I.K.M.); (L.V.); (S.L.B.)
| | - Lucija Višić
- Faculty of Chemical Engineering and Technology, University of Zagreb, Marulićev trg 20, 10000 Zagreb, Croatia; (S.K.); (K.M.); (A.L.); (J.Š.); (I.K.M.); (L.V.); (S.L.B.)
| | - Sanja Lučić Blagojević
- Faculty of Chemical Engineering and Technology, University of Zagreb, Marulićev trg 20, 10000 Zagreb, Croatia; (S.K.); (K.M.); (A.L.); (J.Š.); (I.K.M.); (L.V.); (S.L.B.)
| | - Lara Gigli
- Elettra Sincrotrone Trieste S.C.p.A., Strada Statale 14, 4149 Trieste, Italy; (M.G.); (L.G.); (J.R.P.)
| | - Jasper Rikkert Plaisier
- Elettra Sincrotrone Trieste S.C.p.A., Strada Statale 14, 4149 Trieste, Italy; (M.G.); (L.G.); (J.R.P.)
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Ikeda S, Kawaguchi T, Higuchi Y, Kawasaki N, Harada T, Remeika M, Islam MM, Sakurai T. Effects of Zirconium Doping Into a Monoclinic Scheelite BiVO 4 Crystal on Its Structural, Photocatalytic, and Photoelectrochemical Properties. Front Chem 2018; 6:266. [PMID: 30013969 PMCID: PMC6036109 DOI: 10.3389/fchem.2018.00266] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2018] [Accepted: 06/12/2018] [Indexed: 11/13/2022] Open
Abstract
Effects of zirconium (Zr) doping into BiVO4 powder on its structural properties and photocatalytic activity for O2 evolution were examined. The formation of BiVO4 powder crystallized in a monoclinic scheelite structure (ms-BiVO4) was achieved when the sample was doped with a relatively small amount of Zr. The photocatalytic activity of Zr-doped ms-BiVO4 powder was much higher than that of non-doped ms-BiVO4. However, further doping caused a reduction of photocatalytic activity for O2 evolution due to the occurrence of structural alterations into tetragonal scheelite and tetragonal zircon structures. Similar effects of Zr doping were also observed for the photoelectrochemical (PEC) system based on BiVO4 thin films doped with various amounts of Zr. Thus, Zr doping was confirmed to be effective for improvements of photocatalytic and PEC functions of BiVO4 for water oxidation.
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Affiliation(s)
- Shigeru Ikeda
- Department of Chemistry, Konan University, Hyōgo, Japan
| | | | - Yui Higuchi
- Department of Chemistry, Konan University, Hyōgo, Japan
| | | | - Takashi Harada
- Research Center for Solar Energy Chemistry, Osaka University, Osaka, Japan
| | - Mikas Remeika
- Institute of Applied Physics, University of Tsukuba, Ibaraki, Japan
| | - Muhammad M Islam
- Institute of Applied Physics, University of Tsukuba, Ibaraki, Japan
| | - Takeaki Sakurai
- Institute of Applied Physics, University of Tsukuba, Ibaraki, Japan
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