Atomic layer deposition is successfully applied to synthesize lithium iron phosphate in a layer-by-layer manner by using self-limiting surface reactions. The lithium iron phosphate exhibits high power density, excellent rate capability, and ultra-long lifetime, showing great potential for vehicular lithium batteries and 3D all-solid-state microbatteries.
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http://dx.doi.org/10.1002/adma.201401805 | DOI Listing |
Nano Lett
January 2025
Department of Mechanical Engineering, University of Alberta, 9211-116 Street NW, Edmonton, Alberta T6G 1H9, Canada.
Uncontrolled lithium (Li) dendrite formation presents major safety risks and challenges in the Li host design. A novel approach is introduced, using a valence gradient in iron nanoparticles (Fe, Fe, Fe) to stabilize the anodes. An Fe component, with fast Li diffusion, ensures a steady supply of Li to Fe and Fe components, which have slower Li diffusion.
View Article and Find Full Text PDFEnergy Environ Sci
December 2024
Institute of Chemical Science and Engineering, Station 6, Ecole Polytechnique Federale de Lausanne CH-1015 Lausanne Switzerland
This article aims to present the redox aspects of lithium-ion batteries both from a thermodynamic and from a conductivity viewpoint. We first recall the basic definitions of the electrochemical potential of the electron, and of the Fermi level for a redox couple in solutions. The Fermi level of redox solids such as metal oxide particles is then discussed, and a Nernst equation is derived for two ideal systems, namely an ideally homogenous phase where the oxidised and reduced metal ions are homogeneously distributed and two segregated phases where the oxidised and the reduced metal ions are separated in two distinct phases such as observed, for example, in biphasic lithium iron phosphate.
View Article and Find Full Text PDFChem Mater
January 2025
Department of Physics, University of Cambridge, JJ Thomson Ave, Cambridge CB3 0HE, U.K.
We investigate magnesium-iron pyroborate MgFeBO as a potential cathode material for rechargeable magnesium-ion batteries. Synchrotron powder X-ray diffraction and Mössbauer spectroscopy confirm its successful synthesis and iron stabilization in the high-spin Fe(II) state. Initial electrochemical testing against a lithium metal anode yields a first charge capacity near the theoretical value (147.
View Article and Find Full Text PDFACS Omega
January 2025
Department of Mechanical Engineering, Virginia Tech, Blacksburg, 635 Prices Fork Road, Blacksburg, Virginia 24061, United States.
In this study, a group of aluminum-doped lithium iron phosphate (LFP) with varying dopant concentrations (Li Al FePO/C, where = 0.01-0.03) was synthesized via a solid-state reaction.
View Article and Find Full Text PDFSci Rep
January 2025
Institute of Technology for Carbon Neutrality, Shenzhen Institute of Advanced Technology, The Chinese Academy of Sciences, Shenzhen, Guangdong Province, People's Republic of China.
The rapid growth of electric vehicles (EVs) in China challenges raw material demand. This study evaluates the impact of recycling and reusing EV batteries on reducing material demand and carbon emissions. Integrating a national-level vehicle stock turnover model with life-cycle carbon emission assessment, we found that replacing nickel-cobalt-manganese batteries with lithium iron phosphate batteries with battery recycling can reduce lithium, cobalt, and nickel demand between 2021 and 2060 by up to 7.
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