Journal of Inorganic Materials, Volume. 36, Issue 10, 1031(2021)
Figures & Tables(19)
1. SEM images of mesoporous carbon obtained at template/pitch mass ratios of (a, b) 0.6, (c, d) 0.8, (e, f) 1.0, and (g, h) 1.2
2. TEM images of mesoporous carbon along (a-d) [100] and (e-h) [001] orientations obtained at template/pitch mass ratios of (a, e) 0.6, (b, f) 0.8, (c, g) 1.0 and (d, h) 1.2
3. (a) N2 adsorption-desorption isotherms and (b) BJH pore size distributions of mesoporous carbon obtained from various addition amounts of SBA-15
4. Small-angle XRD patterns of mesoporous carbon obtained from various addition amounts of SBA-15
6. Small-angle XRD patterns of mesoporous carbon prepared under different heating rates
7. SEM images of mesoporous carbon obtained under carbonization temperatures of (a, b) 700, (c, d) 800, (e, f) 900 and (g, h) 1000 ℃
8. TEM images of mesoporous carbon obtained under carbonization temperatures of (a, e) 700, (b, f) 800, (c, g) 900 and (d, h) 1000 ℃
9. (a) TG and DTG curves, (b) cycling performance at 0.2C rate, (c) EIS spectra and (d) rate performance of sample POMCt /60S, (e) CV curves and (f) long cycling performance at 0.2C rate of sample POMC900/60S
S1. Apparent viscosity vs . temperature correlation curves of methylnaphthalene pitch T290
S3. XRD patterns of mesoporous carbon prepared under various carbonization temperatures in the (a) low-angle and (b) wide-angle regions
S5. FT-IR spectra of T290 and derived carbon prepared under various carbonization temperatures
S6. UV-Vis absorption spectra of the Li2S6 solution before and after adding POMC prepared under various carbonization temperatures (inset: digital image of pure Li2S6 solution and Li2S6 solutions after adding POMC for 2 h)
Table 1. General physical properties of methylnaphthalene pitch T290
View tableView in ArticleTable 1. General physical properties of methylnaphthalene pitch T290
Elemental analysis/wt% SPa/℃ CYb/wt% Solubility/wt% C H Br(diff.) H/C TS TI-THFS THFI-QS QI 93.65 4.63 1.72 0.59 278 56.3 89.8 6.9 3.3 0
Table 1. Porous structural parameters of mesoporous carbon obtained under different process conditions
View tableView in ArticleTable 1. Porous structural parameters of mesoporous carbon obtained under different process conditions
Sample SBET/(m2·g-1) Vtotal/(cm3·g-1) Davea/nm d100b/nm a0c/nm Wall thicknessd/nm SBA-15e 488 1.24 8.31 10.23 11.81 3.50 POMC0.6-800 654 0.94 3.84 9.71 11.21 7.37 POMC0.8-800 653 0.94 3.85 9.71 11.21 7.36 POMC1.0-800 703 1.05 4.11 9.48 10.95 6.84 POMC1.2-800 684 0.98 4.10 8.73 10.08 5.98 POMC1.0-800-F 681 0.93 3.85 8.72 10.07 6.22 POMC1.0-700 749 1.16 4.12 9.46 10.92 6.80 POMC1.0-900 675 1.00 3.84 9.28 10.72 6.88 POMC1.0-1000 676 0.95 3.85 8.71 10.06 6.21
Table 2. Distributions of aliphatic and aromatic carbons in methylnaphthalene pitch T290
View tableView in ArticleTable 2. Distributions of aliphatic and aromatic carbons in methylnaphthalene pitch T290
Pitch Aliphatic carbons/% Aromatic carbons/% fa CH3a CH2b Cchainc Car1d Car2e T290 2.31 3.09 7.83 59.49 27.28 0.87
Table 3. Comparison of electrochemical performance of POMC with similar carbon hosts for Li-S batteries
View tableView in ArticleTable 3. Comparison of electrochemical performance of POMC with similar carbon hosts for Li-S batteries
Carbon-based sulfur host Precursor Sulfur content /wt% Initial capacity /(mAh·g-1) Retention Rate performance /(mAh·g-1) Ref. Hierarchical structure ordered mesoporous carbon Phenolic resin 60 1138 at 0.1C ~70% after 80 cycles 761 at 2.7C [ 30 ]Core-shell structure ordered meso@microporous carbon Sucrose 60 1037 at 0.5C ~81% after 200 cycles 605 at 2C [ 31 ]Hierarchical microporous-mesoporous carbon Phenolic resin 60 939 at 0.3C ~78% after 150 cycles 561 at 2C [ 33 ]Mesoporous hollow carbon Petroleum pitch 70 1071 at 0.5C ~91% after 100 cycles 450 at 3C [ 34 ]Ordered mesoporous carbon Methylnaphthalene pitch 60 1095 at 0.2C ~78% after 100 cycles 651 at 2C, 556 at 3C This work
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Jiawei TANG, Yongbang WANG, Cheng MA, Haixiao YANG, Jitong WANG, Wenming QIAO, Licheng LING.
Paper Information
Category: RESEARCH ARTICLE
Received: Dec. 1, 2020
Accepted: --
Published Online: Nov. 26, 2021
The Author Email: QIAO Wenming (qiaowm@ecust.edu.cn)
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