1
|
Ulusoy S, Feygenson M, Thersleff T, Uusimaeki T, Valvo M, Roca AG, Nogués J, Svedlindh P, Salazar-Alvarez G. Elucidating the Lithiation Process in Fe 3-δO 4 Nanoparticles by Correlating Magnetic and Structural Properties. ACS APPLIED MATERIALS & INTERFACES 2024; 16:14799-14808. [PMID: 38478774 PMCID: PMC10982998 DOI: 10.1021/acsami.3c18334] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/07/2023] [Revised: 02/06/2024] [Accepted: 02/26/2024] [Indexed: 04/04/2024]
Abstract
Due to their high potential energy storage, magnetite (Fe3O4) nanoparticles have become appealing as anode materials in lithium-ion batteries. However, the details of the lithiation process are still not completely understood. Here, we investigate chemical lithiation in 70 nm cubic-shaped magnetite nanoparticles with varying degrees of lithiation, x = 0, 0.5, 1, and 1.5. The induced changes in the structural and magnetic properties were investigated using X-ray techniques along with electron microscopy and magnetic measurements. The results indicate that a structural transformation from spinel to rock salt phase occurs above a critical limit for the lithium concentration (xc), which is determined to be between 0.5< xc ≤ 1 for Fe3-δO4. Diffraction and magnetization measurements clearly show the formation of the antiferromagnetic LiFeO2 phase. Upon lithiation, magnetization measurements reveal an exchange bias in the hysteresis loops with an asymmetry, which can be attributed to the formation of mosaic-like LiFeO2 subdomains. The combined characterization techniques enabled us to unambiguously identify the phases and their distributions involved in the lithiation process. Correlating magnetic and structural properties opens the path to increasing the understanding of the processes involved in a variety of nonmagnetic applications of magnetic materials.
Collapse
Affiliation(s)
- Seda Ulusoy
- Department
Materials Science and Engineering, Uppsala
University, P.O. Box 35, 751 03 Uppsala, Sweden
| | - Mikhail Feygenson
- Department
Materials Science and Engineering, Uppsala
University, P.O. Box 35, 751 03 Uppsala, Sweden
- European
Spallation Source ERIC, SE-22100 Lund, Sweden
- Jülich
Centre for Neutron Science (JCNS-1) Forschungszentrum Jülich, D-52425 Jülich, Germany
| | - Thomas Thersleff
- Department
Materials and Environmental Chemistry, Stockholm
University, 106 91 Stockholm, Sweden
| | - Toni Uusimaeki
- Department
Materials and Environmental Chemistry, Stockholm
University, 106 91 Stockholm, Sweden
| | - Mario Valvo
- Department
Chemistry, Uppsala University, 752 37 Uppsala, Sweden
| | - Alejandro G. Roca
- Catalan
Institute of Nanoscience and Nanotechnology (ICN2), CSIC and BIST, Campus UAB, Bellaterra 08193, Barcelona, Spain
| | - Josep Nogués
- Catalan
Institute of Nanoscience and Nanotechnology (ICN2), CSIC and BIST, Campus UAB, Bellaterra 08193, Barcelona, Spain
- ICREA, Pg. Lluís Companys 23, Barcelona 08010, Spain
| | - Peter Svedlindh
- Department
Materials Science and Engineering, Uppsala
University, P.O. Box 35, 751 03 Uppsala, Sweden
| | - German Salazar-Alvarez
- Department
Materials Science and Engineering, Uppsala
University, P.O. Box 35, 751 03 Uppsala, Sweden
| |
Collapse
|
2
|
Quilty CD, Wu D, Li W, Bock DC, Wang L, Housel LM, Abraham A, Takeuchi KJ, Marschilok AC, Takeuchi ES. Electron and Ion Transport in Lithium and Lithium-Ion Battery Negative and Positive Composite Electrodes. Chem Rev 2023; 123:1327-1363. [PMID: 36757020 DOI: 10.1021/acs.chemrev.2c00214] [Citation(s) in RCA: 18] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/10/2023]
Abstract
Electrochemical energy storage systems, specifically lithium and lithium-ion batteries, are ubiquitous in contemporary society with the widespread deployment of portable electronic devices. Emerging storage applications such as integration of renewable energy generation and expanded adoption of electric vehicles present an array of functional demands. Critical to battery function are electron and ion transport as they determine the energy output of the battery under application conditions and what portion of the total energy contained in the battery can be utilized. This review considers electron and ion transport processes for active materials as well as positive and negative composite electrodes. Length and time scales over many orders of magnitude are relevant ranging from atomic arrangements of materials and short times for electron conduction to large format batteries and many years of operation. Characterization over this diversity of scales demands multiple methods to obtain a complete view of the transport processes involved. In addition, we offer a perspective on strategies for enabling rational design of electrodes, the role of continuum modeling, and the fundamental science needed for continued advancement of electrochemical energy storage systems with improved energy density, power, and lifetime.
Collapse
Affiliation(s)
- Calvin D Quilty
- Institute of Energy, Environment, Sustainability and Equity, Stony Brook University, Stony Brook, New York 11794, United States
- Department of Chemistry, Stony Brook University, Stony Brook, New York 11794, United States
| | - Daren Wu
- Institute of Energy, Environment, Sustainability and Equity, Stony Brook University, Stony Brook, New York 11794, United States
- Department of Materials Science and Chemical Engineering, Stony Brook University, Stony Brook, New York 11794, United States
| | - Wenzao Li
- Institute of Energy, Environment, Sustainability and Equity, Stony Brook University, Stony Brook, New York 11794, United States
- Department of Chemistry, Stony Brook University, Stony Brook, New York 11794, United States
| | - David C Bock
- Institute of Energy, Environment, Sustainability and Equity, Stony Brook University, Stony Brook, New York 11794, United States
- Interdisciplinary Science Department, Brookhaven National Laboratory, Upton, New York 11973, United States
| | - Lei Wang
- Institute of Energy, Environment, Sustainability and Equity, Stony Brook University, Stony Brook, New York 11794, United States
- Interdisciplinary Science Department, Brookhaven National Laboratory, Upton, New York 11973, United States
| | - Lisa M Housel
- Institute of Energy, Environment, Sustainability and Equity, Stony Brook University, Stony Brook, New York 11794, United States
- Interdisciplinary Science Department, Brookhaven National Laboratory, Upton, New York 11973, United States
| | - Alyson Abraham
- Institute of Energy, Environment, Sustainability and Equity, Stony Brook University, Stony Brook, New York 11794, United States
| | - Kenneth J Takeuchi
- Institute of Energy, Environment, Sustainability and Equity, Stony Brook University, Stony Brook, New York 11794, United States
- Department of Chemistry, Stony Brook University, Stony Brook, New York 11794, United States
- Department of Materials Science and Chemical Engineering, Stony Brook University, Stony Brook, New York 11794, United States
- Interdisciplinary Science Department, Brookhaven National Laboratory, Upton, New York 11973, United States
| | - Amy C Marschilok
- Institute of Energy, Environment, Sustainability and Equity, Stony Brook University, Stony Brook, New York 11794, United States
- Department of Chemistry, Stony Brook University, Stony Brook, New York 11794, United States
- Department of Materials Science and Chemical Engineering, Stony Brook University, Stony Brook, New York 11794, United States
- Interdisciplinary Science Department, Brookhaven National Laboratory, Upton, New York 11973, United States
| | - Esther S Takeuchi
- Institute of Energy, Environment, Sustainability and Equity, Stony Brook University, Stony Brook, New York 11794, United States
- Department of Chemistry, Stony Brook University, Stony Brook, New York 11794, United States
- Department of Materials Science and Chemical Engineering, Stony Brook University, Stony Brook, New York 11794, United States
- Interdisciplinary Science Department, Brookhaven National Laboratory, Upton, New York 11973, United States
| |
Collapse
|
3
|
Tian L, Xie Y, Lu J, Hu Q, Xiao Y, Liu T, Davronbek B, Zhu X, Su X. Self-assembled 3D Fe3O4/N-Doped graphene aerogel composite for large and fast lithium storage with an excellent cycle performance. J Electroanal Chem (Lausanne) 2022. [DOI: 10.1016/j.jelechem.2022.116763] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
|
4
|
Kopuklu BB, Esen E, Gomez-Martin A, Winter M, Placke T, Schmuch R, Gursel SA, Yurum A. Practical Implementation of Magnetite-Based Conversion-Type Negative Electrodes via Electrochemical Prelithiation. ACS APPLIED MATERIALS & INTERFACES 2022; 14:34665-34677. [PMID: 35880313 DOI: 10.1021/acsami.2c06328] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
We report the performance of a conversion-type magnetite-decorated partially reduced graphene oxide (Fe3O4@PrGO) negative electrode material in full-cell configuration with LiNi0.8Co0.15Al0.05O2 (NCA) positive electrodes. To enable practical implementation of the conversion-type negative electrodes in full cells, the beneficial impact of electrochemical prelithiation on mitigating active lithium losses and improving cycle life is shown here for the first time in the literature. The initial Coulombic efficiency (ICE) of the full cells is improved from 70.8 to 91.2% by prelithiation of the negative electrode to 35% of its specific delithiation capacity. The prelithiation is shown to improve the surface passivation of the Fe3O4@PrGO electrodes, leading to less electrolyte reduction on their surface which is prominent from the significantly lowered accumulated Coulombic inefficiency values, lower polarization growth, and doubled capacity retention by the 100th cycle. The reduced surface reactions of the negative electrode by prelithiation also aids in reducing the extent of aging of the NCA positive electrode. Overall, the prelithiation leads to a longer cycle life, where a retained capacity of 60.4% was achieved for the prelithiated cells by the end of long-term cycling, which is 3 times higher than the capacity retention of the non-prelithiated cells. Results reported herein indicate for the first time that the electrochemical prelithiation of the Fe3O4@PrGO electrode is a promising approach for making conversion negative electrode materials more applicable in lithium-ion batteries.
Collapse
Affiliation(s)
- Buse Bulut Kopuklu
- Faculty of Engineering and Natural Sciences (FENS), Sabancı University, Üniversite Caddesi 27, 34956 Istanbul, Turkey
| | - Ekin Esen
- IEK-12, Forschungszentrum Jülich GmbH, Helmholtz Institute Münster, Münster, Corrensstraße 46, 48149 Münster, Germany
| | - Aurora Gomez-Martin
- MEET Battery Research Center, Institute of Physical Chemistry, University of Münster, Corrensstraße 46, 48149 Münster, Germany
| | - Martin Winter
- IEK-12, Forschungszentrum Jülich GmbH, Helmholtz Institute Münster, Münster, Corrensstraße 46, 48149 Münster, Germany
- MEET Battery Research Center, Institute of Physical Chemistry, University of Münster, Corrensstraße 46, 48149 Münster, Germany
| | - Tobias Placke
- MEET Battery Research Center, Institute of Physical Chemistry, University of Münster, Corrensstraße 46, 48149 Münster, Germany
| | - Richard Schmuch
- MEET Battery Research Center, Institute of Physical Chemistry, University of Münster, Corrensstraße 46, 48149 Münster, Germany
| | - Selmiye Alkan Gursel
- Faculty of Engineering and Natural Sciences (FENS), Sabancı University, Üniversite Caddesi 27, 34956 Istanbul, Turkey
- SUNUM Nanotechnology Research Centre, Sabancı University, Üniversite Caddesi 27, 34956 Istanbul, Turkey
| | - Alp Yurum
- SUNUM Nanotechnology Research Centre, Sabancı University, Üniversite Caddesi 27, 34956 Istanbul, Turkey
| |
Collapse
|
5
|
Tallman KR, West PJ, Yan S, Yao S, Quilty CD, Wang F, Marschilok AC, Bock DC, Takeuchi KJ, Takeuchi ES. Structural and electrochemical investigation of crystallite size controlled zinc ferrite (ZnFe 2O 4). NANOTECHNOLOGY 2021; 32:375403. [PMID: 34107466 DOI: 10.1088/1361-6528/ac09a9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Accepted: 06/09/2021] [Indexed: 06/12/2023]
Abstract
Zinc ferrite, ZnFe2O4(ZFO), is a promising electrode material for next generation Li-ion batteries because of its high theoretical capacity and low environmental impact. In this report, synthetic control of crystallite size from the nanometer to submicron scale enabled probing of the relationships between ZFO size and electrochemical behavior. A facile two-step coprecipitation and annealing preparation method was used to prepare ZFO with controlled sizes ranging ∼9 to >200 nm. Complementary synchrotron and electron microscopy techniques were used to characterize the series of materials. Increasing the annealing temperature increased crystallinity and decreased microstrain, while local structural ordering was maintained independent of crystallite size. Electrochemical characterization revealed that the smaller sized materials delivered higher capacities during initial lithiation. Larger sized particles exhibited a lack of distinct electrochemical signatures above 1.0 V, suggesting that the longer diffusion length associated with greater crystallite size causes the lithiation process to proceed via non discrete lithium insertion, cation migration, and conversion processes. Notably, larger particles exhibited enhanced electrochemical reversibility over 50 cycles, with capacity retention improving from <20% to >40% at C/2 cycling rate. This intriguing result was probed through x-ray absorption spectroscopy (XAS) and x-ray photoelectron spectroscopy (XPS) measurements of the cycled electrodes. XAS revealed that the larger crystallite size materials do not completely convert to Fe0during the first lithiation and that independent of size, delithiation results in the formation of nanocrystalline FeO and ZnO phases rather than ZnFe2O4. After 20 cycles, the larger crystallites showed reversibility between partially oxidized FeO in the charged state and Fe0in the discharged state, while the smaller crystallite size material was electrochemically inactive as Fe0. XPS analysis revealed more significant solid electrolyte interphase (SEI) formation on the cycled electrodes utilizing ZFO with smaller crystallite size. This finding suggests that excessive SEI buildup on the smaller sized, higher surface area ZFO particles contributes to their reduced electrochemical reversibility relative to the larger crystallite size materials.
Collapse
Affiliation(s)
- Killian R Tallman
- Institute for Electrochemically Stored Energy, Stony Brook University, Stony Brook, NY 11794, United States of America
- Department of Chemistry, Stony Brook University, Stony Brook, NY 11794, United States of America
| | - Patrick J West
- Institute for Electrochemically Stored Energy, Stony Brook University, Stony Brook, NY 11794, United States of America
- Department of Materials Science and Chemical Engineering, Stony Brook University, Stony Brook, NY 11794, United States of America
| | - Shan Yan
- Institute for Electrochemically Stored Energy, Stony Brook University, Stony Brook, NY 11794, United States of America
- Interdisciplinary Science Department, Brookhaven National Laboratory, Upton, NY 11973, United States of America
| | - Shanshan Yao
- Interdisciplinary Science Department, Brookhaven National Laboratory, Upton, NY 11973, United States of America
| | - Calvin D Quilty
- Institute for Electrochemically Stored Energy, Stony Brook University, Stony Brook, NY 11794, United States of America
- Department of Chemistry, Stony Brook University, Stony Brook, NY 11794, United States of America
| | - Feng Wang
- Interdisciplinary Science Department, Brookhaven National Laboratory, Upton, NY 11973, United States of America
| | - Amy C Marschilok
- Institute for Electrochemically Stored Energy, Stony Brook University, Stony Brook, NY 11794, United States of America
- Department of Chemistry, Stony Brook University, Stony Brook, NY 11794, United States of America
- Department of Materials Science and Chemical Engineering, Stony Brook University, Stony Brook, NY 11794, United States of America
- Interdisciplinary Science Department, Brookhaven National Laboratory, Upton, NY 11973, United States of America
| | - David C Bock
- Institute for Electrochemically Stored Energy, Stony Brook University, Stony Brook, NY 11794, United States of America
- Interdisciplinary Science Department, Brookhaven National Laboratory, Upton, NY 11973, United States of America
| | - Kenneth J Takeuchi
- Institute for Electrochemically Stored Energy, Stony Brook University, Stony Brook, NY 11794, United States of America
- Department of Chemistry, Stony Brook University, Stony Brook, NY 11794, United States of America
- Department of Materials Science and Chemical Engineering, Stony Brook University, Stony Brook, NY 11794, United States of America
- Interdisciplinary Science Department, Brookhaven National Laboratory, Upton, NY 11973, United States of America
| | - Esther S Takeuchi
- Institute for Electrochemically Stored Energy, Stony Brook University, Stony Brook, NY 11794, United States of America
- Department of Chemistry, Stony Brook University, Stony Brook, NY 11794, United States of America
- Department of Materials Science and Chemical Engineering, Stony Brook University, Stony Brook, NY 11794, United States of America
- Interdisciplinary Science Department, Brookhaven National Laboratory, Upton, NY 11973, United States of America
| |
Collapse
|
6
|
Bock DC, Tallman KR, Guo H, Quilty C, Yan S, Smith PF, Zhang B, Lutz DM, McCarthy AH, Huie MM, Burnett V, Bruck AM, Marschilok AC, Takeuchi ES, Liu P, Takeuchi KJ. (De)lithiation of spinel ferrites Fe 3O 4, MgFe 2O 4, and ZnFe 2O 4: a combined spectroscopic, diffraction and theory study. Phys Chem Chem Phys 2020; 22:26200-26215. [PMID: 33200756 DOI: 10.1039/d0cp02322a] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
Iron based materials hold promise as next generation battery electrode materials for Li ion batteries due to their earth abundance, low cost, and low environmental impact. The iron oxide, magnetite Fe3O4, adopts the spinel (AB2O4) structure. Other 2+ cation transition metal centers can also occupy both tetrahedral and/or octahedral sites in the spinel structure including MgFe2O4, a partially inverse spinel, and ZnFe2O4, a normal spinel. Though structurally similar to Fe3O4 in the pristine state, previous studies suggest significant differences in structural evolution depending on the 2+ cation in the structure. This investigation involves X-ray absorption spectroscopy and X-ray diffraction affirmed by density functional theory (DFT) to elucidate the role of the 2+ cation on the structural evolution and phase transformations during (de)lithiation of the spinel ferrites Fe3O4, MgFe2O4, and ZnFe2O4. The cation in the inverse, normal and partially inverse spinel structures located in the tetrahedral (8a) site migrates to the previously unoccupied octahedral 16c site by 2 electron equivalents of lithiation, resulting in a disordered [A]16c[B2]16dO4 structure. DFT calculations support the experimental results, predicting full displacement of the 8a cation to the 16c site at 2 electron equivalents. Substitution of the 2+ cation results in segregation of oxidized phases in the charged state. This report provides significant structural insight into the (de)lithiation mechanisms for an intriguing class of iron oxide materials.
Collapse
Affiliation(s)
- David C Bock
- Energy Science and Photon Sciences Directorate, Brookhaven National Laboratory, Upton, NY 11973, USA
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
7
|
Microwave-Assisted Synthesis of Water-Dispersible Humate-Coated Magnetite Nanoparticles: Relation of Coating Process Parameters to the Properties of Nanoparticles. NANOMATERIALS 2020; 10:nano10081558. [PMID: 32784384 PMCID: PMC7466618 DOI: 10.3390/nano10081558] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/15/2020] [Revised: 07/23/2020] [Accepted: 08/06/2020] [Indexed: 01/25/2023]
Abstract
Nowadays, there is a demand in the production of nontoxic multifunctional magnetic materials possessing both high colloidal stability in water solutions and high magnetization. In this work, a series of water-dispersible natural humate-polyanion coated superparamagnetic magnetite nanoparticles has been synthesized via microwave-assisted synthesis without the use of inert atmosphere. An impact of a biocompatible humate-anion as a coating agent on the structural and physical properties of nanoparticles has been established. The injection of humate-polyanion at various synthesis stages leads to differences in the physical properties of the obtained nanomaterials. Depending on the synthesis protocol, nanoparticles are characterized by improved monodispersity, smaller crystallite and grain size (up to 8.2 nm), a shift in the point of zero charge (6.4 pH), enhanced colloidal stability in model solutions, and enhanced magnetization (80 emu g−1).
Collapse
|
8
|
Abstract
Magnetite nanoparticles (Fe3O4), average particle size of 12.9 nm, were synthesized de novo from ferrous and ferric iron salt solutions (total iron salt concentration of 3.8 mM) using steady-state headspace NH3(g), 3.3% v/v, at room temperature and pressure, without mechanical agitation, resulting in >99.9% yield. Nanoparticles size distributions were based on enumeration of TEM images and chemical compositions analyzed by: XRD, EDXRF, and FT-IR; super-paramagnetic properties were analyzed by magnetization saturation (74 emu/g). Studies included varying headspace [NH3(g)] (1.6, 3.3, 8.4% v/v), and total iron concentrations (1.0 mM, 3.8 mM, 10.0 mM, and >>10 mM). An application of the unmodified synthesized magnetite nanoparticles included analyses of tetracycline’s (50, 100, 200, 300, and 400 ppb) in aqueous, which was compared to the same tetracycline concentrations prepared in aqueous synthesis suspension with >97% extraction, analyzed with LC-MS/MS.
Collapse
|
9
|
Chauque S, Braga AH, Gonçalves RV, Rossi LM, Torresi RM. Enhanced Energy Storage of Fe
3
O
4
Nanoparticles Embedded in N‐Doped Graphene. ChemElectroChem 2020. [DOI: 10.1002/celc.202000134] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Susana Chauque
- Departamento de Quimica Fundamental Instituto de Química Universidade de São Paulo Av. Prof. Lineu Prestes 748 05508-000 São Paulo SP) Brazil
| | - Adriano H. Braga
- Departamento de Quimica Fundamental Instituto de Química Universidade de São Paulo Av. Prof. Lineu Prestes 748 05508-000 São Paulo SP) Brazil
| | - Renato V. Gonçalves
- Instituto de Física Universidade de São Paulo CP 369 13560-970 SãoCarlos São Paulo Brazil
| | - Liane M. Rossi
- Departamento de Quimica Fundamental Instituto de Química Universidade de São Paulo Av. Prof. Lineu Prestes 748 05508-000 São Paulo SP) Brazil
| | - Roberto M. Torresi
- Departamento de Quimica Fundamental Instituto de Química Universidade de São Paulo Av. Prof. Lineu Prestes 748 05508-000 São Paulo SP) Brazil
| |
Collapse
|
10
|
Exploring organo-palladium(II) complexes as novel organometallic materials for Li-ion batteries. Electrochim Acta 2020. [DOI: 10.1016/j.electacta.2020.135659] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
|
11
|
Xiu Z, Ma J, Wang X, Gao Z, Meng X. Hierarchical porous Fe3O4@N-doped carbon nanoellipsoids with excellent electrochemical performance as anode for lithium-ion batteries. J SOLID STATE CHEM 2020. [DOI: 10.1016/j.jssc.2019.121118] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
|
12
|
Zhang X, Ju Z, Housel LM, Wang L, Zhu Y, Singh G, Sadique N, Takeuchi KJ, Takeuchi ES, Marschilok AC, Yu G. Promoting Transport Kinetics in Li-Ion Battery with Aligned Porous Electrode Architectures. NANO LETTERS 2019; 19:8255-8261. [PMID: 31661622 DOI: 10.1021/acs.nanolett.9b03824] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Developing scalable energy storage systems with high energy and power densities is essential to meeting the ever-growing portable electronics and electric vehicle markets, which calls for development of thick electrode designs to improve the active material loading and greatly enhance the overall energy density. However, rate capabilities in lithium-ion batteries usually fall off rapidly with increasing electrode thickness due to hindered ionic transport kinetics, which is especially the issue for conversion-based electroactive materials. To alleviate the transport constrains, rational design of three-dimensional porous electrodes with aligned channels is critically needed. Herein, magnetite (Fe3O4) with high theoretical capacity is employed as a model material, and with the assistance of micrometer-sized graphine oxide (GO) sheets, aligned Fe3O4/GO (AGF) electrodes with well-defined ionic transport channels are formed through a facile ice-templating method. The as-fabricated AGF electrodes exhibit excellent rate capacity compared with conventional slurry-casted electrodes with an areal capacity of ∼3.6 mAh·cm-2 under 10 mA·cm-2. Furthermore, clear evidence provided by galvanostatic charge-discharge profiles, cyclic voltammetry, and symmetric cell electrochemical impedance spectroscopy confirms the facile ionic transport kinetics in this proposed design.
Collapse
Affiliation(s)
- Xiao Zhang
- Materials Science and Engineering Program and Department of Mechanical Engineering , The University of Texas at Austin , Austin , Texas 78712 , United States
| | - Zhengyu Ju
- Materials Science and Engineering Program and Department of Mechanical Engineering , The University of Texas at Austin , Austin , Texas 78712 , United States
| | - Lisa M Housel
- Department of Chemistry , Stony Brook University , Stony Brook , New York 11794 , United States
| | - Lei Wang
- Energy Sciences Directorate , Brookhaven National Laboratory , Upton New York 11973 , United States
| | - Yue Zhu
- Materials Science and Engineering Program and Department of Mechanical Engineering , The University of Texas at Austin , Austin , Texas 78712 , United States
| | - Gurpreet Singh
- Department of Chemistry , Stony Brook University , Stony Brook , New York 11794 , United States
| | - Nahian Sadique
- Department of Chemistry , Stony Brook University , Stony Brook , New York 11794 , United States
| | - Kenneth J Takeuchi
- Department of Chemistry , Stony Brook University , Stony Brook , New York 11794 , United States
- Department of Materials Science and Chemical Engineering , Stony Brook University , Stony Brook , New York 11794 , United States
| | - Esther S Takeuchi
- Department of Chemistry , Stony Brook University , Stony Brook , New York 11794 , United States
- Energy Sciences Directorate , Brookhaven National Laboratory , Upton New York 11973 , United States
- Department of Materials Science and Chemical Engineering , Stony Brook University , Stony Brook , New York 11794 , United States
| | - Amy C Marschilok
- Department of Chemistry , Stony Brook University , Stony Brook , New York 11794 , United States
- Energy Sciences Directorate , Brookhaven National Laboratory , Upton New York 11973 , United States
- Department of Materials Science and Chemical Engineering , Stony Brook University , Stony Brook , New York 11794 , United States
| | - Guihua Yu
- Materials Science and Engineering Program and Department of Mechanical Engineering , The University of Texas at Austin , Austin , Texas 78712 , United States
| |
Collapse
|
13
|
Lin Z, Li S, Huang J. Natural Cellulose Derived Nanocomposites as Anodic Materials for Lithium‐Ion Batteries. CHEM REC 2019; 20:187-208. [DOI: 10.1002/tcr.201900030] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2019] [Revised: 06/30/2019] [Accepted: 07/04/2019] [Indexed: 11/10/2022]
Affiliation(s)
- Zehao Lin
- Department of ChemistryZhejiang University, Hangzhou Zhejiang 310027 China
| | - Shun Li
- School of EngineeringZhejiang A& F University, Hangzhou Zhejiang 311300 China
| | - Jianguo Huang
- Department of ChemistryZhejiang University, Hangzhou Zhejiang 310027 China
| |
Collapse
|
14
|
Schwaminger SP, Blank-Shim SA, Scheifele I, Fraga-García P, Berensmeier S. Peptide binding to metal oxide nanoparticles. Faraday Discuss 2019; 204:233-250. [PMID: 28765849 DOI: 10.1039/c7fd00105c] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Magnetic metal oxide nanoparticles demonstrate great applicability in several fields such as biotechnology, medicine and catalysis. A stable, magnetic and low-cost material, nanoscale magnetite, is an interesting adsorbent for protein purification. Downstream processing can account for up to 80% of the total production costs in biotechnological production. As such, the development of new innovative separation methods can be regarded as highly profitable. While short peptide sequences can be used as specific affinity tags for functionalised adsorber surfaces, they need expensive affinity ligands on the particle surface for adsorption. In order to identify peptide tags for several non-functionalised inorganic surfaces, different binding conditions to iron oxide nanoparticles are evaluated. Therefore, magnetite nanoparticles in a range of 5-20 nm were synthesised with a co-precipitation method. Zeta potential measurements indicated an amphiphilic surface with an isoelectric point in the neutral pH region. Glutamic acid-based homo-peptides were used as affinity peptides for the magnetite nanoparticles. We demonstrate a dependence of the binding affinity of the peptides on pH and buffer ions in two different experimental set-ups. The nature of surface coordination for glutamic acid-based peptides can be demonstrated with different spectroscopic approaches such as infrared spectroscopy (IR), Raman spectroscopy and circular dichroism spectroscopy (CD). We want to emphasise the importance of physicochemical properties such as surface energy, polarity, morphology and charge. These parameters, which are dependent on the environmental conditions, play a crucial role in peptide interactions with iron oxide surfaces. The understanding of the adsorption of simple biomolecules on nanoscale metal oxide surfaces also represents the key to the even more complex interactions of proteins at the bio-nano interface. From the identification of interaction patterns and an understanding of the adsorption of these peptides, the up-scaling to tagged model proteins facilitates the possibility of an industrial magnetic separation process and might therefore reduce time and costs in purification processes.
Collapse
Affiliation(s)
- S P Schwaminger
- Bioseparation Engineering Group, Department of Mechanical Engineering, Technical University of Munich, Boltzmannstraße 15, Garching, 85748, Germany.
| | | | | | | | | |
Collapse
|
15
|
Zhang W, Li Y, Wu L, Duan Y, Kisslinger K, Chen C, Bock DC, Pan F, Zhu Y, Marschilok AC, Takeuchi ES, Takeuchi KJ, Wang F. Multi-electron transfer enabled by topotactic reaction in magnetite. Nat Commun 2019; 10:1972. [PMID: 31036803 PMCID: PMC6488677 DOI: 10.1038/s41467-019-09528-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2018] [Accepted: 01/30/2019] [Indexed: 01/05/2023] Open
Abstract
A bottleneck for the large-scale application of today’s batteries is low lithium storage capacity, largely due to the use of intercalation-type electrodes that allow one or less electron transfer per redox center. An appealing alternative is multi-electron transfer electrodes, offering excess capacity, which, however, involves conversion reaction; according to conventional wisdom, the host would collapse during the process, causing cycling instability. Here, we report real-time observation of topotactic reaction throughout the multi-electron transfer process in magnetite, unveiled by in situ single-crystal crystallography with corroboration of first principles calculations. Contradicting the traditional belief of causing structural breakdown, conversion in magnetite resembles an intercalation process—proceeding via topotactic reaction with the cubic close packed oxygen-anion framework retained. The findings from this study, with unique insights into enabling multi-electron transfer via topotactic reaction, and its implications to the cyclability and rate capability, shed light on designing viable multi-electron transfer electrodes for high energy batteries. In contrast to the conventional wisdom on conversion-driven structural collapse of the host, this work shows that lithium conversion in magnetite resembles the intercalation process, going via topotactic reactions, thereby enabling multi-electron transfer and high reversible capacity.
Collapse
Affiliation(s)
- Wei Zhang
- Sustainable Energy Technologies Department, Brookhaven National Laboratory, Upton, NY, 11973, USA
| | - Yan Li
- American Physical Society, Ridge, NY, 11961, USA
| | - Lijun Wu
- Condensed Matter Physics and Materials Science Department, Brookhaven National Laboratory, Upton, NY, 11973, USA
| | - Yandong Duan
- Sustainable Energy Technologies Department, Brookhaven National Laboratory, Upton, NY, 11973, USA.,School of Advanced Materials, Peking University, Shenzhen Graduate School, Shenzhen, 518055, China
| | - Kim Kisslinger
- Center for Functional Nanomaterials, Brookhaven National Laboratory, Upton, NY, 11973, USA
| | - Chunlin Chen
- Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang, 110016, China
| | - David C Bock
- Energy Sciences Directorate, Brookhaven National Laboratory, Upton, NY, 11973, USA
| | - Feng Pan
- School of Advanced Materials, Peking University, Shenzhen Graduate School, Shenzhen, 518055, China
| | - Yimei Zhu
- Condensed Matter Physics and Materials Science Department, Brookhaven National Laboratory, Upton, NY, 11973, USA
| | - Amy C Marschilok
- Energy Sciences Directorate, Brookhaven National Laboratory, Upton, NY, 11973, USA.,Department of Materials Science and Engineering, Stony Brook University, Stony Brook, NY, 11794, USA.,Department of Chemistry, Stony Brook University, Stony Brook, NY, 11794, USA
| | - Esther S Takeuchi
- Energy Sciences Directorate, Brookhaven National Laboratory, Upton, NY, 11973, USA.,Department of Materials Science and Engineering, Stony Brook University, Stony Brook, NY, 11794, USA.,Department of Chemistry, Stony Brook University, Stony Brook, NY, 11794, USA
| | - Kenneth J Takeuchi
- Department of Materials Science and Engineering, Stony Brook University, Stony Brook, NY, 11794, USA.,Department of Chemistry, Stony Brook University, Stony Brook, NY, 11794, USA
| | - Feng Wang
- Sustainable Energy Technologies Department, Brookhaven National Laboratory, Upton, NY, 11973, USA.
| |
Collapse
|
16
|
Huie MM, Bock DC, Bruck AM, Tallman KR, Housel LM, Wang L, Thieme J, Takeuchi KJ, Takeuchi ES, Marschilok AC. Isothermal Microcalorimetry: Insight into the Impact of Crystallite Size and Agglomeration on the Lithiation of Magnetite, Fe 3O 4. ACS APPLIED MATERIALS & INTERFACES 2019; 11:7074-7086. [PMID: 30676021 DOI: 10.1021/acsami.8b20636] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Magnetite, Fe3O4, holds significant interest as a Li-ion anode material because of its high theoretical capacity (926 mAh/g) associated with multiple electron transfers per cation center. Notably, both crystallite size and agglomeration influence ion transport. This report probes the effects of crystallite size (12 and 29 nm) and agglomeration on the reactions involved with the formation of the surface electrolyte interphase on Fe3O4. Isothermal microcalorimetry (IMC) was used to determine the parasitic heat evolved during lithiation by considering the total heat measured, cell polarization, and entropic contributions. Interestingly, the 29 nm Fe3O4-based electrodes produced more parasitic heat than the 12 nm samples (1346 vs 1155 J/g). This observation was explored using scanning electron microscopy (SEM) and X-ray fluorescence (XRF) mapping in conjunction with spatially resolved X-ray absorption spectroscopy (XAS). SEM imaging of the electrodes revealed more agglomerates for the 12 nm material, affirmed by XRF maps. Further, XAS results suggest that Li+ transport is more restricted for the smaller crystallite size (12 nm) material, attributed to its greater degree of agglomeration. These results rationalize the IMC data, where agglomerates of the 12 nm material limit solid electrolyte interphase formation and parasitic heat generation during lithiation of Fe3O4.
Collapse
|
17
|
Li X, Zhang Y, Meng Y, Wang Y, Tan G, Yuan H, Xiao D. Three-dimensional iron oxyfluoride/N-doped carbon hybrid nanocomposites as high-performance cathodes for rechargeable Li-ion batteries. Inorg Chem Front 2019. [DOI: 10.1039/c8qi01057a] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Three-dimensional FeOF/NC hybrid nanocomposites have been successfully synthesized; the 3D nanocomposites exhibit improved electrochemical performances compared to bare FeOF.
Collapse
Affiliation(s)
- Xiaopeng Li
- College of Chemical Engineering
- Sichuan University
- Chengdu 610065
- China
| | - Yongzhi Zhang
- Institute of New Energy and Low-Carbon Technology
- Sichuan University
- Chengdu 610065
- China
| | - Yan Meng
- College of Chemical Engineering
- Sichuan University
- Chengdu 610065
- China
| | - Yujue Wang
- Institute of New Energy and Low-Carbon Technology
- Sichuan University
- Chengdu 610065
- China
| | - Guangqun Tan
- College of Chemical Engineering
- Sichuan University
- Chengdu 610065
- China
| | - Hongyan Yuan
- College of Chemical Engineering
- Sichuan University
- Chengdu 610065
- China
| | - Dan Xiao
- College of Chemical Engineering
- Sichuan University
- Chengdu 610065
- China
- Institute of New Energy and Low-Carbon Technology
| |
Collapse
|
18
|
Jian W, Jia R, Wang J, Zhang HX, Bai FQ. Iron oxides with a reverse spinel structure: impact of active sites on molecule adsorption. Inorg Chem Front 2019. [DOI: 10.1039/c9qi00790c] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Fe3O4 and γ-Fe2O3 with the same crystal structure reflect different catalytically active sites leading to different catalyst properties.
Collapse
Affiliation(s)
- Wei Jian
- Laboratory of Theoretical and Computational Chemistry
- Institute of Theoretical Chemistry and College of Chemistry
- Jilin University
- Changchun
- China
| | - Ran Jia
- Laboratory of Theoretical and Computational Chemistry
- Institute of Theoretical Chemistry and College of Chemistry
- Jilin University
- Changchun
- China
| | - Jian Wang
- Laboratory of Theoretical and Computational Chemistry
- Institute of Theoretical Chemistry and College of Chemistry
- Jilin University
- Changchun
- China
| | - Hong-Xing Zhang
- Laboratory of Theoretical and Computational Chemistry
- Institute of Theoretical Chemistry and College of Chemistry
- Jilin University
- Changchun
- China
| | - Fu-Quan Bai
- Laboratory of Theoretical and Computational Chemistry
- Institute of Theoretical Chemistry and College of Chemistry
- Jilin University
- Changchun
- China
| |
Collapse
|
19
|
Jian W, Wang SP, Zhang HX, Bai FQ. Disentangling the role of oxygen vacancies on the surface of Fe3O4 and γ-Fe2O3. Inorg Chem Front 2019. [DOI: 10.1039/c9qi00351g] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The role of oxygen vacancies on Fe3O4 and γ-Fe3O4 (111) surfaces is clarified to investigate molecular oxygen activation.
Collapse
Affiliation(s)
- Wei Jian
- Laboratory of Theoretical and Computational Chemistry
- Institute of Theoretical Chemistry and College of Chemistry
- Jilin University
- Changchun
- China
| | - Shi-Ping Wang
- Laboratory of Theoretical and Computational Chemistry
- Institute of Theoretical Chemistry and College of Chemistry
- Jilin University
- Changchun
- China
| | - Hong-Xing Zhang
- Laboratory of Theoretical and Computational Chemistry
- Institute of Theoretical Chemistry and College of Chemistry
- Jilin University
- Changchun
- China
| | - Fu-Quan Bai
- Laboratory of Theoretical and Computational Chemistry
- Institute of Theoretical Chemistry and College of Chemistry
- Jilin University
- Changchun
- China
| |
Collapse
|
20
|
Kostyukhin EM. Synthesis of Magnetite Nanoparticles upon Microwave and Convection Heating. RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A 2018. [DOI: 10.1134/s0036024418120233] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
21
|
Pathak R, Gurung A, Elbohy H, Chen K, Reza KM, Bahrami B, Mabrouk S, Ghimire R, Hummel M, Gu Z, Wang X, Wu Y, Zhou Y, Qiao Q. Self-recovery in Li-metal hybrid lithium-ion batteries via WO 3 reduction. NANOSCALE 2018; 10:15956-15966. [PMID: 30132491 DOI: 10.1039/c8nr01507d] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
It has been a challenge to use transition metal oxides as anode materials in Li-ion batteries due to their low electronic conductivity, poor rate capability and large volume change during charge/discharge processes. Here, we present the first demonstration of a unique self-recovery of capacity in transition metal oxide anodes. This was achieved by reducing tungsten trioxide (WO3) via the incorporation of urea, followed by annealing in a nitrogen environment. The reduced WO3 successfully self-retained the Li-ion cell capacity after undergoing a sharp decrease upon cycling. Significantly, the reduced WO3 also exhibited excellent rate capability. The reduced WO3 exhibited an interesting cycling phenomenon where the capacity was significantly self-recovered after an initial sharp decrease. The quick self-recoveries of 193.21%, 179.19% and 166.38% for the reduced WO3 were observed at the 15th (521.59/457.41 mA h g-1), 36th (538.49/536.61 mA h g-1) and 45th (555.39/555.39 mA h g-1) cycles respectively compared to their respective preceding discharge capacity. This unique self-recovery phenomenon can be attributed to the lithium plating and conversion reaction which might be due to the activation of oxygen vacancies that act as defects which make the WO3 electrode more electrochemically reactive with cycling. The reduced WO3 exhibited a superior electrochemical performance with 959.1/638.9 mA h g-1 (1st cycle) and 558.68/550.23 mA h g-1 (100th cycle) vs. pristine WO3 with 670.16/403.79 mA h g-1 (1st cycle) and 236.53/234.39 mA h g-1 (100th cycle) at a current density of 100 mA g-1.
Collapse
Affiliation(s)
- Rajesh Pathak
- Center for Advanced Photovoltaics, Department of Electrical Engineering and Computer Science, South Dakota State University, Brookings, SD 57007, USA.
| | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
22
|
Kwon YH, Park JJ, Housel LM, Minnici K, Zhang G, Lee SR, Lee SW, Chen Z, Noda S, Takeuchi ES, Takeuchi KJ, Marschilok AC, Reichmanis E. Carbon Nanotube Web with Carboxylated Polythiophene "Assist" for High-Performance Battery Electrodes. ACS NANO 2018; 12:3126-3139. [PMID: 29337526 DOI: 10.1021/acsnano.7b08918] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
A carbon nanotube (CNT) web electrode comprising magnetite spheres and few-walled carbon nanotubes (FWNTs) linked by the carboxylated conjugated polymer, poly[3-(potassium-4-butanoate) thiophene] (PPBT), was designed to demonstrate benefits derived from the rational consideration of electron/ion transport coupled with the surface chemistry of the electrode materials components. To maximize transport properties, the approach introduces monodispersed spherical Fe3O4 (sFe3O4) for uniform Li+ diffusion and a FWNT web electrode frame that affords characteristics of long-ranged electronic pathways and porous networks. The sFe3O4 particles were used as a model high-capacity energy active material, owing to their well-defined chemistry with surface hydroxyl (-OH) functionalities that provide for facile detection of molecular interactions. PPBT, having a π-conjugated backbone and alkyl side chains substituted with carboxylate moieties, interacted with the FWNT π-electron-rich and hydroxylated sFe3O4 surfaces, which enabled the formation of effective electrical bridges between the respective components, contributing to efficient electron transport and electrode stability. To further induce interactions between PPBT and the metal hydroxide surface, polyethylene glycol was coated onto the sFe3O4 particles, allowing for facile materials dispersion and connectivity. Additionally, the introduction of carbon particles into the web electrode minimized sFe3O4 aggregation and afforded more porous FWNT networks. As a consequence, the design of composite electrodes with rigorous consideration of specific molecular interactions induced by the surface chemistries favorably influenced electrochemical kinetics and electrode resistance, which afforded high-performance electrodes for battery applications.
Collapse
Affiliation(s)
- Yo Han Kwon
- Department of Chemical and Biomolecular Engineering , Georgia Institute of Technology , Atlanta , Georgia 30332 , United States
| | - Jung Jin Park
- Department of Chemical and Biomolecular Engineering , Korea Advanced Institute of Science and Technology (KAIST) , 291 Daehak-ro , Yuseong-gu, Daejeon 305-701 , Republic of Korea
| | - Lisa M Housel
- Department of Chemistry , Stony Brook University , Stony Brook , New York 11794 , United States
| | - Krysten Minnici
- Department of Chemical and Biomolecular Engineering , Georgia Institute of Technology , Atlanta , Georgia 30332 , United States
| | - Guoyan Zhang
- Department of Chemical and Biomolecular Engineering , Georgia Institute of Technology , Atlanta , Georgia 30332 , United States
| | - Sujin R Lee
- Department of Chemistry and Biochemistry , Georgia Institute of Technology , Atlanta , Georgia 30332 , United States
| | - Seung Woo Lee
- Department of Mechanical Engineering , Georgia Institute of Technology , Atlanta , Georgia 30332 , United States
| | - Zhongming Chen
- Department of Applied Chemistry , Waseda University , 3-4-1 Okubo , Shinjuku-ku, Tokyo 169-8555 , Japan
| | - Suguru Noda
- Department of Applied Chemistry , Waseda University , 3-4-1 Okubo , Shinjuku-ku, Tokyo 169-8555 , Japan
| | - Esther S Takeuchi
- Department of Chemistry , Stony Brook University , Stony Brook , New York 11794 , United States
- Department of Materials Science and Chemical Engineering , Stony Brook University , Stony Brook , New York 11794 , United States
- Energy Sciences Directorate , Brookhaven National Laboratory , Upton , New York 11973 , United States
| | - Kenneth J Takeuchi
- Department of Chemistry , Stony Brook University , Stony Brook , New York 11794 , United States
- Department of Materials Science and Chemical Engineering , Stony Brook University , Stony Brook , New York 11794 , United States
| | - Amy C Marschilok
- Department of Chemistry , Stony Brook University , Stony Brook , New York 11794 , United States
- Department of Materials Science and Chemical Engineering , Stony Brook University , Stony Brook , New York 11794 , United States
- Energy Sciences Directorate , Brookhaven National Laboratory , Upton , New York 11973 , United States
| | - Elsa Reichmanis
- Department of Chemical and Biomolecular Engineering , Georgia Institute of Technology , Atlanta , Georgia 30332 , United States
- Department of Chemistry and Biochemistry , Georgia Institute of Technology , Atlanta , Georgia 30332 , United States
- Department of Materials Science and Engineering , Georgia Institute of Technology , Atlanta , Georgia 30332 , United States
| |
Collapse
|
23
|
Wang L, Bock DC, Li J, Stach EA, Marschilok AC, Takeuchi KJ, Takeuchi ES. Synthesis and Characterization of CuFe 2O 4 Nano/Submicron Wire-Carbon Nanotube Composites as Binder-free Anodes for Li-Ion Batteries. ACS APPLIED MATERIALS & INTERFACES 2018; 10:8770-8785. [PMID: 29461030 DOI: 10.1021/acsami.8b00244] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
A series of one-dimensional CuFe2O4 (CFO) nano/submicron wires possessing different diameters, crystal phases, and crystal sizes have been successfully generated using a facile template-assisted coprecipitation reaction at room temperature, followed by a short postannealing process. The diameter and crystal structure of the resulting CuFe2O4 (CFO) wires were judiciously tuned by varying the pore size of the template and the postannealing temperature, respectively. Carbon nanotubes (CNTs) were incorporated to generate CFO-CNT binder-free anodes, and multiple characterization techniques were employed with the goal of delineating the relationships between electrochemical behavior and the properties of both the CFO wires (crystal phase, wire diameter, crystal size) and the electrode architecture (binder-free vs conventionally prepared approaches). The study reveals several notable findings. First, the crystal phase (cubic or tetragonal) did not influence the electrochemical behavior in this CFO system. Second, regarding crystallite size and wire diameter, CFO wires with larger crystallite sizes exhibit improved cycling stability, whereas wires possessing smaller diameters exhibit higher capacities. Finally, the electrochemical behavior is strongly influenced by the electrode architecture, with CFO-CNT binder-free electrodes demonstrating significantly higher capacities and cycling stability compared to conventionally prepared coatings. The mechanism(s) associated with the high capacities under low current density but limited electrochemical reversibility of CFO electrodes under high current density were probed via X-ray absorption spectroscopy mapping with submicron spatial resolution for the first time. Results suggest that the capacity of the binder-free electrodes under high rate is limited by the irreversible formation of Cu0, as well as limited reduction of Fe3+ to Fe2+, not Fe0. The results (1) shed fundamental insight into the reversibility of CuFe2O4 materials cycled at high current density and (2) demonstrate that a synergistic effort to control both active material morphology and electrode architecture is an effective strategy for optimizing electrochemical behavior.
Collapse
Affiliation(s)
- Lei Wang
- Department of Chemistry , State University of New York at Stony Brook , Stony Brook , New York 11794-3400 , United States
| | - David C Bock
- Energy Sciences Directorate , Brookhaven National Laboratory , Interdisciplinary Sciences Building, Building 734 , Upton , New York 11973 , United States
| | - Jing Li
- Department of Materials Science and Chemical Engineering , State University of New York at Stony Brook , Stony Brook , New York 11794-2275 , United States
| | - Eric A Stach
- Center for Functional Nanomaterials , Brookhaven National Laboratory , Building 480 , Upton , New York 11973 , United States
- Department of Materials Science and Engineering , University of Pennsylvania , Philadelphia , Pennsylvania 19104 , United States
| | - Amy C Marschilok
- Department of Chemistry , State University of New York at Stony Brook , Stony Brook , New York 11794-3400 , United States
- Energy Sciences Directorate , Brookhaven National Laboratory , Interdisciplinary Sciences Building, Building 734 , Upton , New York 11973 , United States
- Department of Materials Science and Chemical Engineering , State University of New York at Stony Brook , Stony Brook , New York 11794-2275 , United States
| | - Kenneth J Takeuchi
- Department of Chemistry , State University of New York at Stony Brook , Stony Brook , New York 11794-3400 , United States
- Department of Materials Science and Chemical Engineering , State University of New York at Stony Brook , Stony Brook , New York 11794-2275 , United States
| | - Esther S Takeuchi
- Department of Chemistry , State University of New York at Stony Brook , Stony Brook , New York 11794-3400 , United States
- Energy Sciences Directorate , Brookhaven National Laboratory , Interdisciplinary Sciences Building, Building 734 , Upton , New York 11973 , United States
- Department of Materials Science and Chemical Engineering , State University of New York at Stony Brook , Stony Brook , New York 11794-2275 , United States
| |
Collapse
|
24
|
Bock DC, Pelliccione CJ, Zhang W, Timoshenko J, Knehr KW, West AC, Wang F, Li Y, Frenkel AI, Takeuchi ES, Takeuchi KJ, Marschilok AC. Size dependent behavior of Fe 3O 4 crystals during electrochemical (de)lithiation: an in situ X-ray diffraction, ex situ X-ray absorption spectroscopy, transmission electron microscopy and theoretical investigation. Phys Chem Chem Phys 2018; 19:20867-20880. [PMID: 28745341 DOI: 10.1039/c7cp03312e] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
The iron oxide magnetite, Fe3O4, is a promising conversion type lithium ion battery anode material due to its high natural abundance, low cost and high theoretical capacity. While the close packing of ions in the inverse spinel structure of Fe3O4 enables high energy density, it also limits the kinetics of lithium ion diffusion in the material. Nanosizing of Fe3O4 to reduce the diffusion path length is an effective strategy for overcoming this issue and results in improved rate capability. However, the impact of nanosizing on the multiple structural transformations that occur during the electrochemical (de)lithiation reaction in Fe3O4 is poorly understood. In this study, the influence of crystallite size on the lithiation-conversion mechanisms in Fe3O4 is investigated using complementary X-ray techniques along with transmission electron microscopy (TEM) and continuum level simulations on electrodes of two different Fe3O4 crystallite sizes. In situ X-ray diffraction (XRD) measurements were utilized to track the changes to the crystalline phases during (de)lithiation. X-ray absorption spectroscopy (XAS) measurements at multiple points during the (de)lithiation processes provided local electronic and atomic structural information. Tracking the crystalline and nanocrystalline phases during the first (de)lithiation provides experimental evidence that (1) the lithiation mechanism is non-uniform and dependent on crystallite size, where increased Li+ diffusion length in larger crystals results in conversion to Fe0 metal while insertion of Li+ into spinel-Fe3O4 is still occurring, and (2) the disorder and size of the Fe metal domains formed when either material is fully lithiated impacts the homogeneity of the FeO phase formed during the subsequent delithiation.
Collapse
Affiliation(s)
- David C Bock
- Energy Sciences Directorate, Brookhaven National Laboratory, Upton, NY 11973, USA
| | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
25
|
Peng L, Fang Z, Li J, Wang L, Bruck AM, Zhu Y, Zhang Y, Takeuchi KJ, Marschilok AC, Stach EA, Takeuchi ES, Yu G. Two-Dimensional Holey Nanoarchitectures Created by Confined Self-Assembly of Nanoparticles via Block Copolymers: From Synthesis to Energy Storage Property. ACS NANO 2018; 12:820-828. [PMID: 29261299 DOI: 10.1021/acsnano.7b08186] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Advances in liquid-phase exfoliation and surfactant-directed anisotropic growth of two-dimensional (2D) nanosheets have enabled their rapid development. However, it remains challenging to develop assembly strategies that lead to the construction of 2D nanomaterials with well-defined geometry and functional nanoarchitectures that are tailored to specific applications. Here we report a facile self-assembly method leading to the controlled synthesis of 2D transition metal oxide (TMO) nanosheets containing a high density of holes. We utilize graphene oxide sheets as a sacrificial template and Pluronic copolymers as surfactants. By using ZnFe2O4 (ZFO) nanoparticles as a model material, we demonstrate that by tuning the molecular weight of the Pluronic copolymers we can incorporate the ZFO particles and tune the size of the holes in the sheets. The resulting 2D ZFO nanosheets offer synergistic characteristics including increased electrochemically active surface areas, shortened ion diffusion paths, and strong inherent mechanical properties, leading to enhanced lithium-ion storage properties. Postcycling characterization confirms that the samples maintain structural integrity after electrochemical cycling. Our findings demonstrate that this template-assisted self-assembly method is a useful bottom-up route for controlled synthesis of 2D nanoarchitectures, and these holey 2D nanoarchitectures are promising for improving the electrochemical performance of next-generation lithium-ion batteries.
Collapse
Affiliation(s)
- Lele Peng
- Materials Science and Engineering Program and Department of Mechanical Engineering, The University of Texas at Austin , Austin, Texas 78712, United States
| | - Zhiwei Fang
- Materials Science and Engineering Program and Department of Mechanical Engineering, The University of Texas at Austin , Austin, Texas 78712, United States
| | - Jing Li
- Center for Functional Nanomaterials, Brookhaven National Laboratory , Upton, New York 11973, United States
- Department of Materials Science and Engineering, Stony Brook University , Stony Brook, New York 11794, United States
| | - Lei Wang
- Department of Chemistry, Stony Brook University , Stony Brook, New York 11794, United States
| | - Andrea M Bruck
- Department of Chemistry, Stony Brook University , Stony Brook, New York 11794, United States
| | - Yue Zhu
- Materials Science and Engineering Program and Department of Mechanical Engineering, The University of Texas at Austin , Austin, Texas 78712, United States
| | - Yiman Zhang
- Department of Chemistry, Stony Brook University , Stony Brook, New York 11794, United States
| | - Kenneth J Takeuchi
- Department of Chemistry, Stony Brook University , Stony Brook, New York 11794, United States
- Department of Materials Science and Engineering, Stony Brook University , Stony Brook, New York 11794, United States
| | - Amy C Marschilok
- Department of Chemistry, Stony Brook University , Stony Brook, New York 11794, United States
- Department of Materials Science and Engineering, Stony Brook University , Stony Brook, New York 11794, United States
| | - Eric A Stach
- Center for Functional Nanomaterials, Brookhaven National Laboratory , Upton, New York 11973, United States
| | - Esther S Takeuchi
- Department of Chemistry, Stony Brook University , Stony Brook, New York 11794, United States
- Department of Materials Science and Engineering, Stony Brook University , Stony Brook, New York 11794, United States
- Energy Sciences Directorate, Brookhaven National Laboratory , Upton, New York 11973, United States
| | - Guihua Yu
- Materials Science and Engineering Program and Department of Mechanical Engineering, The University of Texas at Austin , Austin, Texas 78712, United States
| |
Collapse
|
26
|
Bracamonte MV, Primo EN, Luque GL, Venosta L, Bercoff PG, Barraco DE. Lithium dual uptake anode materials: crystalline Fe3O4 nanoparticles supported over graphite for lithium-ion batteries. Electrochim Acta 2017. [DOI: 10.1016/j.electacta.2017.10.034] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
|
27
|
Shi Y, Zhou X, Yu G. Material and Structural Design of Novel Binder Systems for High-Energy, High-Power Lithium-Ion Batteries. Acc Chem Res 2017; 50:2642-2652. [PMID: 28981258 DOI: 10.1021/acs.accounts.7b00402] [Citation(s) in RCA: 110] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Developing high-performance battery systems requires the optimization of every battery component, from electrodes and electrolyte to binder systems. However, the conventional strategy to fabricate battery electrodes by casting a mixture of active materials, a nonconductive polymer binder, and a conductive additive onto a metal foil current collector usually leads to electronic or ionic bottlenecks and poor contacts due to the randomly distributed conductive phases. When high-capacity electrode materials are employed, the high stress generated during electrochemical reactions disrupts the mechanical integrity of traditional binder systems, resulting in decreased cycle life of batteries. Thus, it is critical to design novel binder systems that can provide robust, low-resistance, and continuous internal pathways to connect all regions of the electrode. In this Account, we review recent progress on material and structural design of novel binder systems. Nonconductive polymers with rich carboxylic groups have been adopted as binders to stabilize ultrahigh-capacity inorganic electrodes that experience large volume or structural change during charge/discharge, due to their strong binding capability to active particles. To enhance the energy density of batteries, different strategies have been adopted to design multifunctional binder systems based on conductive polymers because they can play dual functions of both polymeric binders and conductive additives. We first present that multifunctional binder systems have been designed by tailoring the molecular structures of conductive polymers. Different functional groups are introduced to the polymeric backbone to enable multiple functionalities, allowing separated optimization of the mechanical and swelling properties of the binders without detrimental effect on electronic property. We then describe the design of multifunctional binder systems via rationally controlling their nano- and molecular structures, developing the conductive polymer gel binders with 3D framework nanostructures. These gel binders provide multiple functions owing to their structure derived properties. The gel framework facilitates both electronic and ionic transport owing to the continuous pathways for electrons and hierarchical pores for ion diffusion. The polymer coating formed on every particle acts as surface modification and prevents particle aggregation. The mechanically strong and ductile gel framework also sustains long-term stability of electrodes. In addition, the structures and properties of gel binders can be facilely tuned. We further introduce the development of multifunctional binders by hybridizing conductive polymers with other functional materials. Meanwhile mechanistic understanding on the roles that novel binders play in the electrochemical processes of batteries is also reviewed to reveal general design rules for future binder systems. We conclude with perspectives on their future development with novel multifunctionalities involved. Highly efficient binder systems with well-tailored molecular and nanostructures are critical to reach the entire volume of the battery and maximize energy use for high-energy and high-power lithium batteries. We hope this Account promotes further efforts toward synthetic control, fundamental investigation, and application exploration of multifunctional binder materials.
Collapse
Affiliation(s)
- Ye Shi
- Materials Science and Engineering
Program and Department of Mechanical Engineering, The University of Texas at Austin, Austin, Texas 78712, United States
| | - Xingyi Zhou
- Materials Science and Engineering
Program and Department of Mechanical Engineering, The University of Texas at Austin, Austin, Texas 78712, United States
| | - Guihua Yu
- Materials Science and Engineering
Program and Department of Mechanical Engineering, The University of Texas at Austin, Austin, Texas 78712, United States
| |
Collapse
|
28
|
Shi Y, Zhang J, Bruck AM, Zhang Y, Li J, Stach EA, Takeuchi KJ, Marschilok AC, Takeuchi ES, Yu G. A Tunable 3D Nanostructured Conductive Gel Framework Electrode for High-Performance Lithium Ion Batteries. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2017; 29:1603922. [PMID: 28328016 DOI: 10.1002/adma.201603922] [Citation(s) in RCA: 51] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/24/2016] [Revised: 11/04/2016] [Indexed: 06/06/2023]
Abstract
This study develops a tunable 3D nanostructured conductive gel framework as both binder and conductive framework for lithium ion batteries. A 3D nanostructured gel framework with continuous electron pathways can provide hierarchical pores for ion transport and form uniform coatings on each active particle against aggregation. The hybrid gel electrodes based on a polypyrrole gel framework and Fe3 O4 nanoparticles as a model system in this study demonstrate the best rate performance, the highest achieved mass ratio of active materials, and the highest achieved specific capacities when considering total electrode mass, compared to current literature. This 3D nanostructured gel-based framework represents a powerful platform for various electrochemically active materials to enable the next-generation high-energy batteries.
Collapse
Affiliation(s)
- Ye Shi
- Materials Science and Engineering Program and Department of Mechanical Engineering, The University of Texas at Austin, TX, 78712, USA
| | - Jun Zhang
- Materials Science and Engineering Program and Department of Mechanical Engineering, The University of Texas at Austin, TX, 78712, USA
| | - Andrea M Bruck
- Department of Chemistry, Stony Brook University, Stony Brook, NY, 11794, USA
| | - Yiman Zhang
- Department of Chemistry, Stony Brook University, Stony Brook, NY, 11794, USA
| | - Jing Li
- Brookhaven National Laboratory, Center for Functional Nanomaterials, Upton, NY, 11973, USA
| | - Eric A Stach
- Brookhaven National Laboratory, Center for Functional Nanomaterials, Upton, NY, 11973, USA
| | - Kenneth J Takeuchi
- Department of Chemistry, Stony Brook University, Stony Brook, NY, 11794, USA
- Department of Materials Science and Engineering, Stony Brook University, Stony Brook, NY, 11794, USA
| | - Amy C Marschilok
- Department of Chemistry, Stony Brook University, Stony Brook, NY, 11794, USA
- Department of Materials Science and Engineering, Stony Brook University, Stony Brook, NY, 11794, USA
| | - Esther S Takeuchi
- Department of Chemistry, Stony Brook University, Stony Brook, NY, 11794, USA
- Department of Materials Science and Engineering, Stony Brook University, Stony Brook, NY, 11794, USA
- Energy Sciences Directorate, Brookhaven National Laboratory, Upton, NY, 11973, USA
| | - Guihua Yu
- Materials Science and Engineering Program and Department of Mechanical Engineering, The University of Texas at Austin, TX, 78712, USA
| |
Collapse
|
29
|
Schwaminger SP, Bauer D, Fraga-García P, Wagner FE, Berensmeier S. Oxidation of magnetite nanoparticles: impact on surface and crystal properties. CrystEngComm 2017. [DOI: 10.1039/c6ce02421a] [Citation(s) in RCA: 112] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
|
30
|
Wang X, Zhang L, Zhang C, Wu P. Mesoporous graphene/carbon framework embedded with SnO2 nanoparticles as a high-performance anode for lithium storage. Inorg Chem Front 2017. [DOI: 10.1039/c7qi00057j] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A uniform graphene-based mesoporous carbon framework as a robust matrix for embedding SnO2 nanoparticles for long-life lithium storage.
Collapse
Affiliation(s)
- Xiongwei Wang
- State Key Laboratory of Molecular Engineering of Polymers
- Department of Macromolecular Science
- Fudan University
- Shanghai 200433
- P. R. China
| | - Ludan Zhang
- Department of Chemistry
- Laboratory for Advanced Materials
- Fudan University
- Shanghai 200438
- P. R. China
| | - Congcong Zhang
- Department of Chemistry
- Laboratory for Advanced Materials
- Fudan University
- Shanghai 200438
- P. R. China
| | - Peiyi Wu
- State Key Laboratory of Molecular Engineering of Polymers
- Department of Macromolecular Science
- Fudan University
- Shanghai 200433
- P. R. China
| |
Collapse
|
31
|
Li T, Bai X, Qi YX, Lun N, Bai YJ. Fe3O4 nanoparticles decorated on the biochar derived from pomelo pericarp as excellent anode materials for Li-ion batteries. Electrochim Acta 2016. [DOI: 10.1016/j.electacta.2016.11.140] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
|
32
|
Abraham A, Housel LM, Lininger CN, Bock D, Jou J, Wang F, West AC, Marschilok AC, Takeuchi KJ, Takeuchi ES. Investigating the Complex Chemistry of Functional Energy Storage Systems: The Need for an Integrative, Multiscale (Molecular to Mesoscale) Perspective. ACS CENTRAL SCIENCE 2016; 2:380-387. [PMID: 27413781 PMCID: PMC4919774 DOI: 10.1021/acscentsci.6b00100] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/08/2016] [Indexed: 06/06/2023]
Abstract
Electric energy storage systems such as batteries can significantly impact society in a variety of ways, including facilitating the widespread deployment of portable electronic devices, enabling the use of renewable energy generation for local off grid situations and providing the basis of highly efficient power grids integrated with energy production, large stationary batteries, and the excess capacity from electric vehicles. A critical challenge for electric energy storage is understanding the basic science associated with the gap between the usable output of energy storage systems and their theoretical energy contents. The goal of overcoming this inefficiency is to achieve more useful work (w) and minimize the generation of waste heat (q). Minimization of inefficiency can be approached at the macro level, where bulk parameters are identified and manipulated, with optimization as an ultimate goal. However, such a strategy may not provide insight toward the complexities of electric energy storage, especially the inherent heterogeneity of ion and electron flux contributing to the local resistances at numerous interfaces found at several scale lengths within a battery. Thus, the ability to predict and ultimately tune these complex systems to specific applications, both current and future, demands not just parametrization at the bulk scale but rather specific experimentation and understanding over multiple length scales within the same battery system, from the molecular scale to the mesoscale. Herein, we provide a case study examining the insights and implications from multiscale investigations of a prospective battery material, Fe3O4.
Collapse
Affiliation(s)
- Alyson Abraham
- Department of Chemistry, Stony Brook University, Stony
Brook, New York 11794, United States
| | - Lisa M. Housel
- Department of Chemistry, Stony Brook University, Stony
Brook, New York 11794, United States
| | - Christianna N. Lininger
- Department of Chemical Engineering, Columbia University, New York, New York 10027, United States
| | - David
C. Bock
- Energy Sciences Directorate, Brookhaven National Laboratory, Upton, New York 11973, United States
| | - Jeffrey Jou
- Department of Chemistry, Stony Brook University, Stony
Brook, New York 11794, United States
| | - Feng Wang
- Energy Sciences Directorate, Brookhaven National Laboratory, Upton, New York 11973, United States
| | - Alan C. West
- Department of Chemical Engineering, Columbia University, New York, New York 10027, United States
| | - Amy C. Marschilok
- Department of Chemistry, Stony Brook University, Stony
Brook, New York 11794, United States
- Department
of Materials Science and Engineering, Stony
Brook University, Stony Brook, New York 11794, United States
| | - Kenneth J. Takeuchi
- Department of Chemistry, Stony Brook University, Stony
Brook, New York 11794, United States
- Department
of Materials Science and Engineering, Stony
Brook University, Stony Brook, New York 11794, United States
| | - Esther S. Takeuchi
- Department of Chemistry, Stony Brook University, Stony
Brook, New York 11794, United States
- Energy Sciences Directorate, Brookhaven National Laboratory, Upton, New York 11973, United States
- Department
of Materials Science and Engineering, Stony
Brook University, Stony Brook, New York 11794, United States
| |
Collapse
|
33
|
Bock DC, Pelliccione CJ, Zhang W, Wang J, Knehr KW, Wang J, Wang F, West AC, Marschilok AC, Takeuchi KJ, Takeuchi ES. Dispersion of Nanocrystalline Fe3O4 within Composite Electrodes: Insights on Battery-Related Electrochemistry. ACS APPLIED MATERIALS & INTERFACES 2016; 8:11418-11430. [PMID: 27096464 DOI: 10.1021/acsami.6b01134] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Aggregation of nanosized materials in composite lithium-ion-battery electrodes can be a significant factor influencing electrochemical behavior. In this study, aggregation was controlled in magnetite, Fe3O4, composite electrodes via oleic acid capping and subsequent dispersion in a carbon black matrix. A heat treatment process was effective in the removal of the oleic acid capping agent while preserving a high degree of Fe3O4 dispersion. Electrochemical testing showed that Fe3O4 dispersion is initially beneficial in delivering a higher functional capacity, in agreement with continuum model simulations. However, increased capacity fade upon extended cycling was observed for the dispersed Fe3O4 composites relative to the aggregated Fe3O4 composites. X-ray absorption spectroscopy measurements of electrodes post cycling indicated that the dispersed Fe3O4 electrodes are more oxidized in the discharged state, consistent with reduced reversibility compared with the aggregated sample. Higher charge-transfer resistance for the dispersed sample after cycling suggests increased surface-film formation on the dispersed, high-surface-area nanocrystalline Fe3O4 compared to the aggregated materials. This study provides insight into the specific effects of aggregation on electrochemistry through a multiscale view of mechanisms for magnetite composite electrodes.
Collapse
Affiliation(s)
- David C Bock
- Brookhaven National Laboratory , Upton, New York 11973, United States
| | | | - Wei Zhang
- Brookhaven National Laboratory , Upton, New York 11973, United States
| | - Jiajun Wang
- Brookhaven National Laboratory , Upton, New York 11973, United States
| | - K W Knehr
- Department of Chemical Engineering, Columbia University , New York, New York 10027, United States
| | - Jun Wang
- Brookhaven National Laboratory , Upton, New York 11973, United States
| | - Feng Wang
- Brookhaven National Laboratory , Upton, New York 11973, United States
| | - Alan C West
- Department of Chemical Engineering, Columbia University , New York, New York 10027, United States
| | | | | | - Esther S Takeuchi
- Brookhaven National Laboratory , Upton, New York 11973, United States
| |
Collapse
|