A new strategy for porous carbon synthesis: Starch hydrogel as a carbon source for Co3O4@C supercapacitor electrodes

He, Liwen; Lin, Chen; Zhao, Yican; Gao, Wenhai; Zhang, Hailian; Lin, Bin; Sun, Dongya

doi:10.1016/j.ceramint.2021.12.012

Cited by 18 publications

(5 citation statements)

References 30 publications

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“…10 000 (93.5%) [31] Chitosan/guar gum Electrode 0-0.8 302.2 F g −1 (0.1 A g −1 ) 5000 (88%) [32] Bacterial celluloses Electrode 0-1.0 241.8 F g −1 (0.1 A g −1 ) 10 000 (90%) [33] Cellulose/lignin Electrode −1.0-0 53.5 F g −1 (0.5 A g −1 ) 20 000 (95.3%) [34] Cellulose/lignin Electrode 0-0.8 890.8 mF cm −2 (1 mA cm −2 ) - [35] sodium alginate Electrode −1-0 180.2 F g −1 (1 A g −1 ) 5000 (96%) [36] sodium alginate/cellulose Electrode −1-0 302 F g −1 (0.5 A g −1 ) 10 000 (93.8%) [37] CMC binder 0-2 2381 mF cm −2 (0.5 mA cm −2 ) 10 000 (78.9%) Ref.…”

Section: Methodsmentioning

confidence: 99%

“…He et al designed a freeze-drying-carbonization overall strategy to successfully realize the preparation of starch hydrogel-derived AC, and further anchored cobalt oxide nanocrystals on the porous carbon by hydrothermal reaction to construct electrode materials with porous network structure (Figure 8d). [31] From the SEM images, it is found that the freeze-dried starch hydrogel showed a uniform porous structure and the pore size was ≈100-200 nm (Figure 8e). After the carbonization process, the continuous pores were still retained, providing the possibility of loading of active materials (Co 3 O 4 ; Figure 8f).…”

Section: Starchmentioning

confidence: 97%

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Recent Advancements and Perspectives of Biodegradable Polymers for Supercapacitors

Shi

2023

Adv Funct Materials

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Supercapacitors (SCs) have demonstrated great potential for integration into future wearable and implantable electronics, yet the insufficient environmental adaption and biosafety limit their further development. To this regard, application of biodegradable polymers is considered as an ideal solution strategy for the environmentally sound disposal of SCs. The biodegradable polymers with satisfactory degradability and excellent biocompatibility demonstrate an irreplaceable role in the future development of SCs and provide an ideal solution strategy for its environmentally sound disposal. In this review, the research progress and challenges of biodegradable polymers in the field of SCs are discussed and analyzed. First, the classification of existing biodegradable polymers and their typical structure, properties, and preparation processes are elucidated. Subsequently, the main applications of biodegradable polymers in different components of SCs, including electrodes, electrolytes, substrate, and encapsulation materials, are summarized. In addition, the research progress of biodegradable polymer-based SCs in terms of preparation strategies and modification methods is summarized, and the key role of biodegradable polymers in the development process of green SCs is deeply discussed. Finally, the future perspectives and challenges faced by the biodegradable polymer-based SCs are briefly proposed.

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Section: Methodsmentioning

confidence: 99%

Section: Starchmentioning

confidence: 97%

Recent Advancements and Perspectives of Biodegradable Polymers for Supercapacitors

Shi

2023

Adv Funct Materials

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“…It has been utilized for developing conducting biofilms, fuel-cell coatings, supercapacitor electrodes, solar cells, and colorimetric and electrochemical sensors. [181][182][183] Cu 2 O-starch NC as a modified carbon paste electrode has been used as an electrochemical sensor for the assessment of glucose using the CV technique based on its oxidation. 95 Additionally, a CoNP/starch/CPE was used for the detection of paracetamol based on its oxidation via twoelectron and two-proton transfer.…”

Section: Starchmentioning

confidence: 99%

Carbohydrate polymer-supported metal and metal oxide nanoparticles for constructing electrochemical sensors

Zahran

2024

Mater. Adv.

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“…The fabricated symmetric SC cell using porous carbon electrode pairs sandwiched with the electrolyte film delivered specific capacitance of 184.8 F g −1 at a scan rate of 5 mV s −1 . To further improve the specific capacitance of starch‐derived carbon‐based materials, similarly, He et al [ 59 ] developed a 3D Co 3 O 4 @C composite using starch as a precursor via freeze drying, precarbonization, and pyrolysis processes. Encouragingly, the as‐prepared Co 3 O 4 @C composite, having a unique 3D structure, large SSA, and good electrical conductivity, exhibited a high specific capacitance of 1314 F g −1 at 1 A g −1 and an excellent capacitance retention of 93.5% after 10 000 cycles.…”

Section: Ac‐based Electrode Materialsmentioning

confidence: 99%

“…[17,85,110,182,189] After further hybridizing with transition metal oxides, conductive polymers, or other pseudocapacitive substances, the produced hybrid SC electrodes can further enhance the record specific capacitance exceeding 1000 F g À1 . [27,59,117,121,153,190,200] As a result, the small energy density, the main shortage of SCs, has been more or less alleviated. The record energy density for symmetrical pure carbonbased SCs is over 50 Wh kg À1 , [144] while for hybrid devices it exceeds 300 Wh kg À1 .…”

Section: Conclusion and Prospectsmentioning

confidence: 99%

Carbon Nanomaterials‐Enabled High‐Performance Supercapacitors: A Review

Zhao

Liu

et al. 2022

Adv Energy and Sustain Res

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Supercapacitors (SCs), an important kind of electrochemical energy storage device, are featured with high power density, rapid charging and discharging, and ultralong cycling lifespan and have been widely applied in multiscenario energy storage and output systems, such as portable consumer electronics, electric vehicles, and reservoir setups for green and sustainable energy resources. Among their components, electrode materials are of primary importance in dictating their performances. Owing to good electric conductivity, achievably large specific surface area, low cost, chemical stability, and easy loading with other electrochemically active species, various carbon nanomaterials, including activated carbons, carbon nanotubes, graphene, and other porous carbons, are promising electrode materials in the fabrication of high-performance SCs. In fact, the past decade has witnessed enormous efforts in the development of highperformance carbon-based SC electrode materials and great progresses achieved in the field. In this review, recent advances on these carbon-based SCs are summarized through a number of selected representative works. In each one, the unique preparation method, structural features, and their correlations to electrochemical properties and final SC performance are presented and discussed. At the end of the review, the challenges and future developing prospects are briefly outlined.

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A new strategy for porous carbon synthesis: Starch hydrogel as a carbon source for Co3O4@C supercapacitor electrodes

Cited by 18 publications

References 30 publications

Recent Advancements and Perspectives of Biodegradable Polymers for Supercapacitors

Recent Advancements and Perspectives of Biodegradable Polymers for Supercapacitors

Carbohydrate polymer-supported metal and metal oxide nanoparticles for constructing electrochemical sensors

Carbon Nanomaterials‐Enabled High‐Performance Supercapacitors: A Review

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