کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6465862 1422957 2017 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
One-dimensional Co3O4 nanonet with enhanced rate performance for lithium ion batteries: Carbonyl-β-cyclodextrin inducing and kinetic analysis
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
One-dimensional Co3O4 nanonet with enhanced rate performance for lithium ion batteries: Carbonyl-β-cyclodextrin inducing and kinetic analysis
چکیده انگلیسی


- 1D nanonet structure is fabricated by carbonyl-β-cyclodextrin inducing.
- Network conductance enhances rate performance significantly.
- Increased interior transport pathways are conducive to Li+/electron transport.

Kinetics-limited solid-state diffusion rate results in low rate capacity, retarding the practical applications of Co3O4 anode materials. Construction of nanonet can introduce sufficient interior transport pathways for rapid charging-discharging. Here, we fabricate one-dimensional Co3O4 nanonet (1D-NN) through a facile hydrothermal method with subsequent heat treatment. The construction of nanonet is achieved by employing carbonyl-β-cyclodextrin (C-β-CD) as a crosslinking agent. With the absence of C-β-CD, 1D Co3O4 is also fabricated, while the constructing blocks are independent nanoparticles (1D-NP). Evaluated as anodes for lithium ion batteries, 1D-NN exhibits better rate capacity than 1D-NP. Furthermore, to extract the key reason of outstanding rate capacity, the kinetic properties with different time constants are studied by EIS, GITT and CV simultaneously. The charge transfer resistance and the apparent chemical diffusion coefficient of 1D-NN are more superior to that of 1D-NP. The results of this work show that the C-β-CD induced 1D nanonet structure is conducive to Li+ transport for enhanced rate performance.

The increased interior transport pathways are conducive to Li+/electron transport for enhanced rate performance160

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemical Engineering Journal - Volume 321, 1 August 2017, Pages 31-39
نویسندگان
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