Highly durable Li-ion battery anode from Fe 3 O 4 nanoparticles embedded in nitrogen-doped porous carbon with improved r
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Highly durable Li-ion battery anode from Fe3O4 nanoparticles embedded in nitrogen-doped porous carbon with improved rate capabilities Ashvini B. Deshmukh1,3, Pravin K. Dwivedi1,3, Archana C. Nalawade2,3, Mohammed S. Qureshi2,3, and Manjusha V. Shelke1,3,* 1
Physical and Materials Chemistry Division, CSIR-National Chemical Laboratory, Pune, MH 411008, India Chemical Engineering and Process Development Division, CSIR-National Chemical Laboratory, Pune, MH 411008, India 3 Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, UP 201002, India 2
Received: 5 May 2020
ABSTRACT
Accepted: 19 August 2020
For next generation, lithium-ion batteries (LIBs) developing high capacity anode materials are crucial with increasing demand of large-scale application. Conversion-type anode materials are promising if stable cycling behavior could be achieved. In this work, a nitrogen-doped porous carbon-Fe3O4 (NPC-Fe3O4) nanocomposite is synthesized via a simple and scalable approach. Composite is prepared by pyrolysis of polymer silica hybrid PolyHIPE (high internal phase emulsion) into NPC, and Fe3O4 nanoparticles (NPs) are anchored on its surface via hydrothermal synthesis. As-prepared NPC-Fe3O4 nanocomposite delivers high reversible capacity of around 1001 mAhg-1 at 0.1 Ag-1 current density and rate capabilities and displays excellent cycling stability as high as 95% capacity retention even after 400 cycles. Superior electrochemical performance of NPCFe3O4 is attributed to the hierarchical porous structure and nitrogen doping of carbon which shorten the diffusion path of Li? and provide ample space to prevent aggregation of Fe3O4 nanoparticles.
Published online: 31 August 2020
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Springer Science+Business
Media, LLC, part of Springer Nature 2020
Handling Editor: Dale Huber. Ashvini B. Deshmukh and Pravin K. Dwivedi contributed equally to this work.
Address correspondence to E-mail: [email protected]
https://doi.org/10.1007/s10853-020-05143-y
15668
J Mater Sci (2020) 55:15667–15680
GRAPHIC ABSTRACT
Abbreviations NPC Nitrogen-doped porous carbon HIPE High internal phase emulsion NPs Nanoparticles LiBs Li-ion batteries SEI Solid electrolyte interface
HF TEOS RGO GO PVDF NMP
Hydrofluoric acid Tetraethyl orthosilicate Reduced graphene oxide Graphene oxide Polyvinylidene fluoride N-methyl pyrrolidone
15669
J Mater Sci (2020) 55:15667–15680
Introduction Storing energy and making it available for reuse with least amount of loss and maximum efficiency is the ultimate goal of energy storage-related research. In this context, rechargeable Li-ion batteries (LiBs) play a crucial role due to their high power density, high gravimetric and volumetric energy density and long cycle life [1, 2]. Graphite is used as anode material in commercial LiBs for its low lithiation potential, good electric conductivity and remarkable stability. Though there are limitations on energy storage capacity of graphite and typically it has theoretical energy storage capacity of * 375 mAh g-1, for next generation lithium-based energy stora
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