Hierarchical porous carbon derived from one-step self-activation of zinc gluconate for symmetric supercapacitors with high energy density

Xiao, Junlei; Zhang, Hua; Wang, Yifan; Zhang, Chunmei; He, Shuijian; Jiang, Shaohua

doi:10.1007/s11705-022-2250-3

Cited by 10 publications

(1 citation statement)

References 40 publications

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“…In physical activation, air, [69] CO 2 , [70,71] H 2 O or O 2 are activated to oxidize biochar or coal char. While in chemical activation, H 3 PO 4 , [72,73] Na 2 CO 3 , [74] KOH [75,76] or ZnCl 2 [77][78][79] are also used to oxidize biochar or coal char. Figure 4 shows the different activation strategies to fabricate porous carbons.…”

Section: Porous Carbonsmentioning

confidence: 99%

Recent Advances on Nitrogen‐Doped Porous Carbons Towards Electrochemical Supercapacitor Applications

Komal Zafar,

Zainab,

Masood

et al. 2023

The Chemical Record

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Due to ever‐increasing global energy demands and dwindling resources, there is a growing need to develop materials that can fulfil the World's pressing energy requirements. Electrochemical energy storage devices have gained significant interest due to their exceptional storage properties, where the electrode material is a crucial determinant of device performance. Hence, it is essential to develop 3‐D hierarchical materials at low cost with precisely controlled porosity and composition to achieve high energy storage capabilities. After presenting the brief updates on porous carbons (PCs), then this review will focus on the nitrogen (N) doped porous carbon materials (NPC) for electrochemical supercapacitors as the NPCs play a vital role in supercapacitor applications in the field of energy storage. Therefore, this review highlights recent advances in NPCs, including developments in the synthesis of NPCs that have created new methods for controlling their morphology, composition, and pore structure, which can significantly enhance their electrochemical performance. The investigated N‐doped materials a wide range of specific surface areas, ranging from 181.5 to 3709 m2 g−1, signifies a substantial increase in the available electrochemically active surface area, which is crucial for efficient energy storage. Moreover, these materials display notable specific capacitance values, ranging from 58.7 to 754.4 F g−1, highlighting their remarkable capability to effectively store electrical energy. The outstanding electrochemical performance of these materials is attributed to the synergy between heteroatoms, particularly N, and the carbon framework in N‐doped porous carbons. This synergy brings about several beneficial effects including, enhanced pseudo‐capacitance, improved electrical conductivity, and increased electrochemically active surface area. As a result, these materials emerge as promising candidates for high‐performance supercapacitor electrodes. The challenges and outlook in NPCs for supercapacitor applications are also presented. Overall, this review will provide valuable insights for researchers in electrochemical energy storage and offers a basis for fabricating highly effective and feasible supercapacitor electrodes.

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Section: Porous Carbonsmentioning

confidence: 99%

Recent Advances on Nitrogen‐Doped Porous Carbons Towards Electrochemical Supercapacitor Applications

Komal Zafar,

Zainab,

Masood

et al. 2023

The Chemical Record

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Wood Derived Flexible and Spongy Architectures for Advanced Electrochemical Energy Storage and Conversion

Patil,

Mishra,

Liu

et al. 2023

Advanced Sustainable Systems

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Wood‐based flexible and porous architectures are currently receiving extensive attention in the development of flexible devices. The unique water adsorption properties of natural wood enable rapid and spontaneous water uptake, leading to concentration differences that facilitate the diffusion of ions with opposite charges. This article gives a summary of the differences between flexible and porous architectures made from natural wood. It also gives a detailed look at the porous architecture, which is made up of nanochannels, low‐tortuosity channels, and single‐atom sites to improve the electrochemical performance of supercapacitors, metal‐air batteries, lithium‐sulfur batteries, and lithium‐oxide batteries. Moreover, the processing approaches that utilize cell wall engineering to transform flat wood sheets into adaptable 3D structures such as flexible films and foams are described. Finally, some existing challenges and future perspectives faced by wood‐based flexible and spongy architectures for electrochemical energy conversion and storage are described.

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3D network of zinc powder woven into fibre filaments for dendrite-free zinc battery anodes

Sha,

Sui,

Wang

et al. 2024

Chemical Engineering Journal

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Hierarchical porous carbon derived from one-step self-activation of zinc gluconate for symmetric supercapacitors with high energy density

Cited by 10 publications

References 40 publications

Recent Advances on Nitrogen‐Doped Porous Carbons Towards Electrochemical Supercapacitor Applications

Recent Advances on Nitrogen‐Doped Porous Carbons Towards Electrochemical Supercapacitor Applications

Wood Derived Flexible and Spongy Architectures for Advanced Electrochemical Energy Storage and Conversion

3D network of zinc powder woven into fibre filaments for dendrite-free zinc battery anodes

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