Fast sol–gel synthesis of mesoporous Li2MnSiO4/C nanocomposite with improved electrochemical performance for lithium-ion batteries

Wang, Fuqing; Chen, Jian; Wang, Chong; Yi, Baolian

doi:10.1016/j.jelechem.2012.10.014

Cited by 27 publications

(7 citation statements)

References 53 publications

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“…The impedance analysis can probe and detect Li + ion migration within cathode Li 2 MnSiO 4 lattices and resistance components at various charge-discharge states of the battery. 4,31 Fig. 4 shows Nyquist plots obtained from the coin cell with the cathode by using mp-LMS and c-LMS after ball milling with carbon, respectively, which shows the similar discharge capacity (Fig.…”

Section: Resultsmentioning

confidence: 87%

Mesoporous silica-assisted carbon free Li₂MnSiO₄cathode nanoparticles for high capacity Li rechargeable batteries

Kim

Suk

Yun

et al. 2014

Phys. Chem. Chem. Phys.

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Porous and spherical Li2MnSiO4 nanoparticles have been synthesized through a facile sol-gel route via a mesoporous silica template. Galvanostatic charge-discharge of the resultant Li2MnSiO4 cathode exhibits enhanced charge-discharge capacity relative to that of particles prepared by the conventional sol-gel process, up to 25% in discharge capacity, even without any particulate process such as milling with conductive agents. The standout electrochemical performance could be attributed to the unique high surface-to-volume ratio, porous geometry and improved accommodation of transformation strains during the electrochemical lithiation-delithiation process.

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Section: Resultsmentioning

confidence: 87%

Mesoporous silica-assisted carbon free Li₂MnSiO₄cathode nanoparticles for high capacity Li rechargeable batteries

Kim

Suk

Yun

et al. 2014

Phys. Chem. Chem. Phys.

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“…However, the content of carbon in their material was high (>10 wt%), which decreased the volume specific capacity [4,11,12]. Despite significant progresses have been made in synthesizing LiMnPO 4 , we still encounter some problems in the development of practically battery applications [1,2,[13][14][15][16]. Conventionally, solution route does not require high reaction temperature and divided particle can be acquired, but complicated processes and long reaction time are mandatory.…”

Section: Introductionmentioning

confidence: 99%

Ionothermal synthesis and electrochemical analysis of Fe doped LiMnPO4/C composites as cathode materials for lithium-ion batteries

Liu

Jin

et al. 2014

Journal of Alloys and Compounds

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“…In line with this, we prepared a LiFePO 4 À Li 2 MnSiO 4 hybrid cathode material by using the sol gel and the hand milling technique. The pristine cathode materials are polyanion compounds and are characterised by the presence of the (XO 4 ) n unit which is associated with their high stability and better performance compared to other transition metal oxides [6,20,[44][45][46]. In addition, these stabilities are attributed to the presence of strong covalent bonds between PÀ O and SiÀ O in LiFePO 4 and Li 2 MnSiO 4 , respectively [47][48][49].…”

Section: Introductionmentioning

confidence: 99%

“…Amongst the different synthetic methods such as solgel, hydrothermal, solvothermal, solid-state reaction, coprecipitation etc., that have been developed and utilised to prepare various cathode materials, sol-gel approach offers better mixing of reagents, which leads to homogeneous particle size distribution in the final product [55]. In addition, the technique allows the ease to control stoichiometry, produce nanoparticles with uniform size and morphology, and the obtained products show higher purity compared to those prepared by other methods [44,48]. This technique was adopted for the preparation of pristine LiFePO 4 , Li 2 MnSiO 4 , LiFePO 4 À Li 2 MnSiO 4 and graphenised LiFePO 4 À Li 2 MnSiO 4 hybrid cathode materials due to its simplicity, less energy consumption and expensive equipment is not required during synthesis.…”

Section: Introductionmentioning

confidence: 99%

Graphenised Lithium Iron Phosphate and Lithium Manganese Silicate Hybrid Cathodes: Potentials for Application in Lithium‐ion Batteries

et al. 2020

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Sol-gel and hand milling techniques were used to prepare a lithium iron phosphate-lithium manganese silicate (LiFePO 4 À Li 2 MnSiO 4) hybrid cathode materials. The structural studies from x-ray diffraction (XRD) and high resolution transmission electron microscopy (HRTEM) show that the materials are well crystallized although few impurities were observed in the pristine LiFePO 4 (LFP) and Li 2 MnSiO 4 (LMS) materials. We used graphene to coat the hybrid cathode materials in order to increase its conductivity and enhance the electrochemical performance. The successful reduction of the graphene oxide into graphene nanosheets was confirmed with the results from the Fourier transform infrared (FTIR) and Raman spectroscopy. The morphological analysis indicate that the pristine materials are made of spherical nanoparticles that are slightly agglomerated while the sol-gel-prepared hybrid cathode materials show evenly distributed spherical nanoparticles with minimal agglomeration. The in situ sol-gel technique gave more homogenously mixed material in comparison to the hand milling method and particle sizes of 37 and 23 nm respectively were obtained for the plain, and graphenised sol gel derived hybrid materials. The sol-gel derived hybrid materials are also the most thermally stable giving a total weight loss of 4.5 % and 3.4 % for the plain and graphenised cathodes respectively. While the LFP-LMS hybrid cathode materials performed better electrochemically more than the pristine materials in terms of enhanced current and specific capacities, the graphenised LFP-LMS hybrid cathode materials showed better electrochemical properties compared to those without graphene. This is associated with the presence of graphene nanosheets in these samples. All the results confirmed that the graphenised LiFePO 4 À Li 2 MnSiO 4 hybrid cathode material prepared via in situ sol-gel method performed better than those of the hand milling method.

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Fast sol–gel synthesis of mesoporous Li2MnSiO4/C nanocomposite with improved electrochemical performance for lithium-ion batteries

Cited by 27 publications

References 53 publications

Mesoporous silica-assisted carbon free Li₂MnSiO₄cathode nanoparticles for high capacity Li rechargeable batteries

Mesoporous silica-assisted carbon free Li₂MnSiO₄cathode nanoparticles for high capacity Li rechargeable batteries

Ionothermal synthesis and electrochemical analysis of Fe doped LiMnPO4/C composites as cathode materials for lithium-ion batteries

Graphenised Lithium Iron Phosphate and Lithium Manganese Silicate Hybrid Cathodes: Potentials for Application in Lithium‐ion Batteries

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Fast sol–gel synthesis of mesoporous Li2MnSiO4/C nanocomposite with improved electrochemical performance for lithium-ion batteries

Cited by 27 publications

References 53 publications

Mesoporous silica-assisted carbon free Li2MnSiO4cathode nanoparticles for high capacity Li rechargeable batteries

Mesoporous silica-assisted carbon free Li2MnSiO4cathode nanoparticles for high capacity Li rechargeable batteries

Ionothermal synthesis and electrochemical analysis of Fe doped LiMnPO4/C composites as cathode materials for lithium-ion batteries

Graphenised Lithium Iron Phosphate and Lithium Manganese Silicate Hybrid Cathodes: Potentials for Application in Lithium‐ion Batteries

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Mesoporous silica-assisted carbon free Li₂MnSiO₄cathode nanoparticles for high capacity Li rechargeable batteries

Mesoporous silica-assisted carbon free Li₂MnSiO₄cathode nanoparticles for high capacity Li rechargeable batteries