ORCID Profile
0000-0002-3995-2776
Current Organisations
Zhejiang University of Technology
,
Harbin Institute of Technology
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Publisher: Royal Society of Chemistry (RSC)
Date: 2021
DOI: 10.1039/D1EE01812D
Abstract: Intelligence-assisted predesign for economically and environmentally sustainable recycling of spent lithium-ion batteries and beyond.
Publisher: Royal Society of Chemistry (RSC)
Date: 2021
DOI: 10.1039/D1QM00255D
Abstract: Sustainable bio-derived materials solve the critical issues of low ionic and electrical conductivity, large volume variation, lithium dendrite formation, and the shuttle effect of the sulfur cathode in lithium-ion batteries.
Publisher: Royal Society of Chemistry (RSC)
Date: 2013
DOI: 10.1039/C2TA00106C
Publisher: Wiley
Date: 28-11-2018
Publisher: Springer Science and Business Media LLC
Date: 12-01-2021
Publisher: American Chemical Society (ACS)
Date: 23-02-2023
Publisher: Elsevier BV
Date: 12-2016
Publisher: Royal Society of Chemistry (RSC)
Date: 2014
DOI: 10.1039/C3NR04611G
Abstract: In this work, mesoporous carbon-coated LiFePO4 nanocrystals further co-modified with graphene and Mg(2+) doping (G/LFMP) were synthesized by a modified rheological phase method to improve the speed of lithium storage as well as cycling stability. The mesoporous structure of LiFePO4 nanocrystals was designed and realized by introducing the bead milling technique, which assisted in forming sucrose-pyrolytic carbon nanoparticles as the template for generating mesopores. For comparison purposes, s les modified only with graphene (G/LFP) or Mg(2+) doping (LFMP) as well as pure LiFePO4 (LFP) were also prepared and investigated. Microscopic observation and nitrogen sorption analysis have revealed the mesoporous morphologies of the as-prepared composites. X-ray diffraction (XRD) and Rietveld refinement data demonstrated that the Mg-doped LiFePO4 is a single olivine-type phase and well crystallized with shortened Fe-O and P-O bonds and a lengthened Li-O bond, resulting in an enhanced Li(+) diffusion velocity. Electrochemical properties have also been investigated after assembling coin cells with the as-prepared composites as the cathode active materials. Remarkably, the G/LFMP composite has exhibited the best electrochemical properties, including fast lithium storage performance and excellent cycle stability. That is because the modification of graphene provided active sites for nuclei, restricted the in situ crystallite growth, increased the electronic conductivity and reduced the interface reaction current density, while, Mg(2+) doping improved the intrinsically electronic and ionic transfer properties of LFP crystals. Moreover, in the G/LFMP composite, the graphene component plays the role of "cushion" as it could quickly realize capacity response, buffering the impact to LFMP under the conditions of high-rate charging or discharging, which results in a pre-eminent rate capability and cycling stability.
Publisher: Royal Society of Chemistry (RSC)
Date: 2013
DOI: 10.1039/C3RA44218G
Publisher: Elsevier BV
Date: 03-2014
No related grants have been discovered for tiefeng liu.