Optimization of the preparation conditions of KOH-activated, PAN-based carbon ellipsoids by orthogonal experimental analysis

LIU Yuan-ming; QIN Xian-ying; ZHANG Shao-qiong; ZHANG Zhe-xu; KANG Fei-yu; LI Bao-hua

doi:10.1016/S1872-5805(20)60480-2

Volume 35 Issue 2

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Article Navigation > New Carbon Mater. > 2020 > 35(2): 131-139

LIU Yuan-ming, QIN Xian-ying, ZHANG Shao-qiong, ZHANG Zhe-xu, KANG Fei-yu, LI Bao-hua. Optimization of the preparation conditions of KOH-activated, PAN-based carbon ellipsoids by orthogonal experimental analysis. New Carbon Mater., 2020, 35(2): 131-139. doi: 10.1016/S1872-5805(20)60480-2

Citation:

LIU Yuan-ming, QIN Xian-ying, ZHANG Shao-qiong, ZHANG Zhe-xu, KANG Fei-yu, LI Bao-hua. Optimization of the preparation conditions of KOH-activated, PAN-based carbon ellipsoids by orthogonal experimental analysis. New Carbon Mater., 2020, 35(2): 131-139. doi: 10.1016/S1872-5805(20)60480-2

Citation:

LIU Yuan-ming, QIN Xian-ying, ZHANG Shao-qiong, ZHANG Zhe-xu, KANG Fei-yu, LI Bao-hua. Optimization of the preparation conditions of KOH-activated, PAN-based carbon ellipsoids by orthogonal experimental analysis. New Carbon Mater., 2020, 35(2): 131-139. doi: 10.1016/S1872-5805(20)60480-2

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Optimization of the preparation conditions of KOH-activated, PAN-based carbon ellipsoids by orthogonal experimental analysis

doi: 10.1016/S1872-5805(20)60480-2

1.
Engineering Laboratory for Next Generation Power and Energy Storage Batteries, Engineering Laboratory for Functionalized Carbon Materials, Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, China;
2.
School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China;
3.
Shenzhen Geim Graphene Center, Shenzhen 518055, China

Funds: National Key Basic Research Program of China (2014CB932400); Joint Fund of the National Natural Science Foundation of China (U1401243); National Natural Science Foundation of China (51232005); Shenzhen Technical Plan Project (JCYJ20150529164918735, KQJSCX20160226191136, JCYJ20170412170911187); Guangdong Technical Plan Project (2015TX01N011).

Received Date: 2020-01-06
Accepted Date: 2020-04-28
Rev Recd Date: 2020-03-26
Publish Date: 2020-04-28

Abstract

Abstract

The optimal preparation conditions for activated carbons from polyacrolynitrile ellipsoid powder by KOH activation were investigated by orthogonal experimental analysis. Results indicate that the activation temperature, holding time, KOH/carbon mass ratio all have a significant impact on the specific surface area, but a small impact on the total pore volume and mean pore size. The importance of factors determining (a) specific surface area are activation temperature > activation time > KOH/carbon mass ratio, (b) total pore volume are activation temperature > KOH/carbon mass ratio > activation time, and (c) the mean pore size are activation time > KOH/carbon mass ratio > activation temperature. The optimal combination of conditions (activation temperature of 800 ℃, holding time of 4 h and KOH/carbon mass ratio of 4:1) from orthogonal experimental analysis was validated experimentally. Under these conditions the specific surface area, total pore volume and mean pore size of the PAN-based porous carbon reached 2 517 m² g^-1, 1.07 cm³ g^-1 and 1.70 nm, respectively.
- Porous carbon,
- KOH activation,
- Specific surface area,
- Orthogonal experiment

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References(20)

References

Wang J, Kaskel S. KOH activation of carbon-based materials for energy storage[J]. Journal of Materials Chemistry, 2012, 22(45):23710.

Wu M, Zha Q, Qiu J, et al. Preparation and characterization of porous carbons from PAN-based preoxidized cloth by KOH activation[J]. Carbon, 2004, 42(1):205-210.

Liu Y, Qin X, Zhang S, et al. Oxygen and nitrogen co-doped porous carbon granules enabling dendrite-free lithium metal anode[J]. Energy Storage Materials, 2019, 18:320-327.

Liu Y, Qin X, Zhang S, et al. Fe₃O₄-decorated porous graphene interlayer for high-performance lithium-sulfur batteries[J]. ACS Applied Materials & Interfaces, 2018, 10(31):26264-26273.

Qie L, Chen W, Xu H, et al. Synthesis of functionalized 3D hierarchical porous carbon for high-performance supercapacitors[J]. Energy & Environmental Science, 2013, 6(8):2497.

Ahmadpour A, Do D D. The preparation of active carbons from coal by chemical and physical activation[J]. Carbon, 1996, 34(4):471-479.

Marsh H, Yan D S, O'Grady T M, et al. Formation of active carbons from cokes using potassium hydroxide[J]. Carbon, 1984, 22(6):603-611.

Yang S, Hu H, Chen G. Preparation of carbon adsorbents with high surface area and a model for calculating surface area[J]. Carbon, 2002, 40(3):277-284.

Laine J, Calafat A. Factors affecting the preparation of activated carbons from coconut shell catalized by potassium[J]. Carbon, 1991, 29(7):949-953.

Zhou M, Pu F, Wang Z, et al. Nitrogen-doped porous carbons through KOH activation with superior performance in supercapacitors[J]. Carbon, 2014, 68:185-194.

Yoon S H, Lim S, Song Y, et al. KOH activation of carbon nanofibers[J]. Carbon, 2004, 42(8-9):1723-1729.

Sevilla M, Fuertes A B, Mokaya R. High density hydrogen storage in superactivated carbons from hydrothermally carbonized renewable organic materials[J]. Energy & Environmental Science, 2011, 4(4):1400.

Ye H, Yin Y X, Xin S, et al. Tuning the porous structure of carbon hosts for loading sulfur toward long lifespan cathode materials for Li-S batteries[J]. Journal of Materials Chemistry A, 2013, 1(22):6602.

Fu L, Tang K, Song K, et al. Nitrogen doped porous carbon fibres as anode materials for sodium ion batteries with excellent rate performance[J]. Nanoscale, 2014, 6(3):1384-1389.

Zhu Y, Hu H, Li W, et al. Resorcinol-formaldehyde based porous carbon as an electrode material for supercapacitors[J]. Carbon, 2007, 45(1):160-165.

Wu X, Leung D Y C. Optimization of biodiesel production from camelina oil using orthogonal experiment[J]. Applied Energy, 2011, 88(11):3615-3624.

Yu M J, Wang C G, Bai Y J, et al. SEM and OM study on the microstructure of oxidative stabilized polyacrylonitrile fibers[J]. Polymer Bulletin, 2007, 58(5):933-940.

Qin X, Lu Y, Xiao H, et al. Improving stabilization degree of stabilized fibers by pretreating polyacrylonitrile precursor fibers in nitrogen[J]. Materials Letters, 2012, 76162-76164.

Qin X, Lu Y, Xiao H, et al. Effect of heating and stretching polyacrylonitrile precursor fibers in steam on the properties of stabilized fibers and carbon fibers[J]. Polymer Engineering & Science, 2012, 53(4):827-832.

Wen Y, Lu Y, Xiao H, et al. Further investigation on boric acid catalytic graphitization of polyacrylonitrile carbon fibers:Mechanism and mechanical properties[J]. Materials & Design (1980-2015), 2012, 36728-36734.

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