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Journals >Journal of Inorganic Materials >Volume 36 >Issue 10 >Page 1031 > Article

Journal of Inorganic Materials
Vol. 36, Issue 10, 1031 (2021)

Methylnaphthalene Pitch-based Ordered Mesoporous Carbon: Synthesis and Electrochemical Properties

Jiawei TANG¹, Yongbang WANG^1、2, Cheng MA¹, Haixiao YANG¹, Jitong WANG¹, Wenming QIAO^1、*, and Licheng LING¹

Author Affiliations

¹1. State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China

²2. Sinopec Refinery Product Sales Company Limited, Shanghai 200050, China

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DOI: 10.15541/jim20200690 Cite this Article

Jiawei TANG, Yongbang WANG, Cheng MA, Haixiao YANG, Jitong WANG, Wenming QIAO, Licheng LING. Methylnaphthalene Pitch-based Ordered Mesoporous Carbon: Synthesis and Electrochemical Properties[J]. Journal of Inorganic Materials, 2021, 36(10): 1031 Copy Citation Text

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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

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

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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

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

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3. (a) N₂ adsorption-desorption isotherms and (b) BJH pore size distributions of mesoporous carbon obtained from various addition amounts of SBA-15

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4. Small-angle XRD patterns of mesoporous carbon obtained from various addition amounts of SBA-15

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5. (a, b) SEM and (c, d) TEM images of POMC1.0-800-F

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6. Small-angle XRD patterns of mesoporous carbon prepared under different heating rates

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7. SEM images of mesoporous carbon obtained under carbonization temperatures of (a, b) 700, (c, d) 800, (e, f) 900 and (g, h) 1000 ℃

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8. TEM images of mesoporous carbon obtained under carbonization temperatures of (a, e) 700, (b, f) 800, (c, g) 900 and (d, h) 1000 ℃

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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

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S1. Apparent viscosity vs. temperature correlation curves of methylnaphthalene pitch T290

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S2. Synthesis of methylnaphthalene pitch

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S3. XRD patterns of mesoporous carbon prepared under various carbonization temperatures in the (a) low-angle and (b) wide-angle regions

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S4. Solid-state ¹³C-NMR spectra of methylnaphthalene pitch T290

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S5. FT-IR spectra of T290 and derived carbon prepared under various carbonization temperatures

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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)

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Elemental analysis/wt%				SP^a/℃	CY^b/wt%	Solubility/wt%
C	H	Br(diff.)	H/C	SP^a/℃	CY^b/wt%	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. General physical properties of methylnaphthalene pitch T290

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Sample	S_BET/(m²·g^-1)	V_total/(cm³·g^-1)	D_ave^a/nm	d₁₀₀^b/nm	a₀^c/nm	Wall thickness^d/nm
SBA-15^e	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 1. Porous structural parameters of mesoporous carbon obtained under different process conditions

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Pitch	Aliphatic carbons/%			Aromatic carbons/%		f_a
Pitch	CH₃^a	CH₂^b	C_chain^c	Car₁^d	Car₂^e	f_a
T290	2.31	3.09	7.83	59.49	27.28	0.87

Table 2. Distributions of aliphatic and aromatic carbons in methylnaphthalene pitch T290

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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

Table 3. Comparison of electrochemical performance of POMC with similar carbon hosts for Li-S batteries

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Jiawei TANG, Yongbang WANG, Cheng MA, Haixiao YANG, Jitong WANG, Wenming QIAO, Licheng LING. Methylnaphthalene Pitch-based Ordered Mesoporous Carbon: Synthesis and Electrochemical Properties[J]. Journal of Inorganic Materials, 2021, 36(10): 1031

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