scholarly journals Hierarchical porous carbons from carboxylated coal-tar pitch functional poly(acrylic acid) hydrogel networks for supercapacitor electrodes

RSC Advances ◽  
2020 ◽  
Vol 10 (2) ◽  
pp. 1095-1103
Author(s):  
Haiyang Wang ◽  
Chuan Zhou ◽  
Hongzhe Zhu ◽  
Yixuan Li ◽  
Shoukai Wang ◽  
...  
Keyword(s):  
Acrylic Acid ◽  
Specific Capacitance ◽  
Coal Tar ◽  
High Specific Capacitance ◽  
Coal Tar Pitch ◽  
Porous Carbons ◽  
Supercapacitor Electrode ◽  
Hierarchical Porous ◽  
Hierarchical Porous Carbons ◽  
Poly Acrylic Acid

As a supercapacitor electrode exhibit a high specific capacitance of 292 F g−1 at 1.0 A g−1.

scholarly journals Construction of S-doped hierarchical porous carbons by acid-free treatment strategy for supercapacitors

2021 ◽  
Vol 228 ◽  
pp. 01007
Author(s):  
Lei Yang ◽  
BiYu Jin ◽  
Hong Qiang Li ◽  
Ting Ting Wu ◽  
Xiao Jun He
Keyword(s):  
Electrode Materials ◽  
Coal Tar ◽  
High Specific Capacitance ◽  
Porous Carbons ◽  
Energy Storage Devices ◽  
Supercapacitor Electrode ◽  
Alternative Technologies ◽  
Hierarchical Pores ◽  
Hierarchical Porous ◽  
Hierarchical Porous Carbons

The pollution from acid treatment process in the preparation process of hierarchical porous carbons is a substantial challenge for industrial application of supercapacitors (SCs), which necessitates the development of green alternative technologies. In this work, S-doped hierarchical porous carbons (S-HPCs) are prepared from cheap coal tar pitch by a less harmful in situ KHCO3 activation strategy. The sample obtained at 800°C (S-HPC800) possesses 3D framework structure with hierarchical pores, large specific surface area (1485 m2 g-1) and O, S-containing functional groups. Due to these synergistic characteristics, SHPC800 as supercapacitor electrode exhibits high specific capacitance of 246 F g-1 at 0.1 A g-1 with a capacitance retention of 68.3% at 40 A g-1 and excellent cycle stability with 96.7% capacitance retention after 10, 000 charge-discharge cycles. This work provides an environmentally friendly approach to prepare advanced carbon-based electrode materials from industrial by-products for energy storage devices.

Template-free preparation of layer-stacked hierarchical porous carbons from coal tar pitch for high performance all-solid-state supercapacitors

2017 ◽  
Vol 5 (30) ◽  
pp. 15869-15878 ◽  
Author(s):  
Taotao Guan ◽  
Kaixi Li ◽  
Jianghong Zhao ◽  
Rijie Zhao ◽  
Guoli Zhang ◽  
...  
Keyword(s):  
Solid State ◽  
High Performance ◽  
Coal Tar ◽  
Coal Tar Pitch ◽  
Porous Carbons ◽  
Hierarchical Porous ◽  
Hierarchical Porous Carbons ◽  
Template Free

Template-free preparation of layer-stacked hierarchical porous carbons from cheap pitch precursors for high-performance all-solid-state supercapacitors.

scholarly journals Dicarbonyl-tuned microstructures of hierarchical porous carbons derived from coal-tar pitch for supercapacitor electrodes

RSC Advances ◽  
2019 ◽  
Vol 9 (35) ◽  
pp. 20019-20028 ◽  
Author(s):  
Haiyang Wang ◽  
Hongzhe Zhu ◽  
Shoukai Wang ◽  
Debang Qi ◽  
Kaihua Shen
Keyword(s):  
Coal Tar ◽  
Cycling Stability ◽  
Coal Tar Pitch ◽  
Porous Carbons ◽  
Hierarchical Porous ◽  
Hierarchical Porous Carbons ◽  
Excellent Cycling Stability

The hierarchical porous carbons have an excellent cycling stability with a capacitance retention of 92.9% after 10 000 cycles.

Coal tar pitch-based hierarchical porous carbons prepared in molten salt for supercapacitors

2021 ◽  
pp. 124491
Author(s):  
Huichao Liu ◽  
Hua Song ◽  
Wenjing Hou ◽  
Yunzhen Chang ◽  
Ying Zhang ◽  
...  
Keyword(s):  
Molten Salt ◽  
Coal Tar ◽  
Coal Tar Pitch ◽  
Porous Carbons ◽  
Hierarchical Porous ◽  
Hierarchical Porous Carbons

scholarly journals Hierarchical porous carbon derived from carboxylated coal-tar pitch for electrical double-layer capacitors

RSC Advances ◽  
2019 ◽  
Vol 9 (50) ◽  
pp. 29131-29140 ◽  
Author(s):  
Haiyang Wang ◽  
Hongzhe Zhu ◽  
Yixuan Li ◽  
Debang Qi ◽  
Shoukai Wang ◽  
...  
Keyword(s):  
Specific Capacitance ◽  
Porous Carbon ◽  
Electrical Double Layer ◽  
Coal Tar ◽  
Electrochemical Stability ◽  
Coal Tar Pitch ◽  
Hierarchical Porous Carbon ◽  
Hierarchical Porous ◽  
Electrical Double Layer Capacitors ◽  
Double Layer Capacitors

The specific capacitance of the HPC-2 electrode retention of 93.9% was obtained after 10 000 cycles, indicating good electrochemical stability.

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