Coralline‐Like N‐Doped Hierarchically Porous Carbon Derived from Enteromorpha as a Host Matrix for Lithium‐Sulfur Battery

Ji, Shengnan; Imtiaz, Sumair; Sun, Dan; Xin, Ying; Li, Qian; Huang, Taizhong; Zhang, Zhaoliang; Huang, Yunhui

doi:10.1002/chem.201703357

Cited by 36 publications

(8 citation statements)

References 60 publications

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“…It is noted that when the cycling rate reverts to 0.1 C, the discharge capacity of N‐OSC can recover to 902 mA h g −1 , whereas the cell irreversibly suffers from considerable capacity loss. Figure d shows that N‐OSC/S has comparable rate performance in comparison with the previous reports about biomass‐derived carbon as a matrix for LSBs …”

Section: Resultssupporting

confidence: 58%

Natural Okra Shells Derived Nitrogen‐Doped Porous Carbon to Regulate Polysulfides for High‐Performance Lithium–Sulfur Batteries

Liu

Shi

et al. 2019

Energy Tech

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Low conductivity of elemental sulfur, the “shuttle effect” of polysulfides, and structural change hamper lithium–sulfur batteries that have poor electrochemical performance. Herein, a facile and scalable approach to fabricate porous carbon is derived from common okra wastes, okra shells, as a matrix for sulfur active materials. Especially, the material calcined under NH3 (N‐doped biomass‐derived porous carbon [N‐OSC]) with a high specific surface area of 2702 m2 g−1 and large pore volume (0.17 cm3 g−1) provides necessary physical adsorption, resulting in the 69.71 wt% loading of sulfur and excellent trapping capacity for polysulfides during the redox process. Furthermore, N element can act as catalytic active sites to facilitate redox conversion from polysulfides to Li2S. Benefiting from the aforementioned advantages, the cell of the N‐OSC/S electrode manifests superior electrochemical performance. The initial capacity is found up to be 1387 mA h g−1 at a current density of 0.1 C and 750 mA h g−1 after 200 cycles at 0.5 C rate (where 1 C = 1672 mA h g−1). For durability evaluations, the capacity is maintained at 416 mA h g−1 at 2 C after 1000 cycles with a mere decay of 0.05% per cycle.

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Section: Resultssupporting

confidence: 58%

Natural Okra Shells Derived Nitrogen‐Doped Porous Carbon to Regulate Polysulfides for High‐Performance Lithium–Sulfur Batteries

Liu

Shi

et al. 2019

Energy Tech

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“…The green tides from the booming of enteromorpha prolifera (EP) cause bad impressions on the marine ecosystem, coastal farming, ocean transportation, and tourism. , Thus, the rational use of EP became a challenge, and the microtubular structure of EP made it possible to convert to 1D porous carbon materials . As is known, chitin and its derivative chitosan are the amplest and cheapest biomass resources with abundant nitrogen content .…”

Section: Introductionmentioning

confidence: 99%

N/P Codoped Porous Carbon/One-Dimensional Hollow Tubular Carbon Heterojunction from Biomass Inherent Structure for Supercapacitors

Li¹,

Zhou²,

Zhou³

et al. 2018

ACS Sustainable Chem. Eng.

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A N/P codoped porous carbon/one-dimensional (1D) hollow tubular carbon heterojunction was successfully fabricated from waste biomass. 1D carbon microtube (CMT) originating from the inherent biological structure of enteromorpha prolifera (EP) was used for constructing the heterojunction with uniform heteroatom distribution and good conductivity by pyrolyzing the chitosan dihydrogen phosphate protic salt (CDPPS)-coated CMT, in which CMT was used as conductive substrate and CDPPS as carbon, nitrogen, phosphorus sources, and "soft" activating agent. The optimized heterojunction (NPEPC-6-900) possesses a large specific surface area (1220 m 2 g −1 ) and high content of heteroatom functionalities (4.50 at. % N and 2.36 at. % P). A similar effect also occurs on cotton with analogous 1D hollow tubular architecture structure, and the sample presents a specific surface area (766 m 2 g −1 ) and chemical composition (3.75 at. % N and 1.34 at. % P). Benefiting from the distinctive structural feature and desirable heteroatom doping, the NPEPC-6-900-based electrode indicates high capacitance of 324 F g −1 at 1 A g −1 , and still maintains the capacitance of 231 F g −1 even at 20 A g −1 (ca. 71.3% capacitance retention). Moreover, it also possesses good cycling stability with only a loss of 2% after 5000 cycles.

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“…The physical activation method is performed by inert‐atmosphere calcination, followed by high‐temperature (600–1200°C) activation with the introduction of suitable gasifying agents (CO 2 , 135,152–157 NH 3 , 158,159 Cl 2 , 160–163 and steam 164 ). In contrast, chemical activation includes mixing of carbonaceous materials and activating agents (e.g., KOH, 29,84,165–199 NaOH, 200 K 2 CO 3 , 201,202 H 3 PO 4 , 203–205 etc. ), followed by calcination at a lower temperature (400–900°C).…”

Section: Synthetic Strategies Of Hpcsmentioning

confidence: 99%

Status and perspectives of hierarchical porous carbon materials in terms of high‐performance lithium–sulfur batteries

et al. 2022

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Lithium-sulfur (Li-S) batteries, although a promising candidate of nextgeneration energy storage devices, are hindered by some bottlenecks in their roadmap toward commercialization. The key challenges include solving the issues such as low utilization of active materials, poor cyclic stability, poor rate performance, and unsatisfactory Coulombic efficiency due to the inherent poor electrical and ionic conductivity of sulfur and its discharged products (e.g., Li 2 S 2 and Li 2 S), dissolution and migration of polysulfide ions in the electrolyte, unstable solid electrolyte interphase and dendritic growth on anodes, and volume change in both cathodes and anodes. Owing to the high specific surface area, pore volume, low density, good chemical stability, and particularly multimodal pore sizes, hierarchical porous carbon (HPC) materials have received considerable attention for circumventing the above problems in Li-S batteries. Herein, recent progress made in the synthetic methods and deployment of HPC materials for various components including sulfur cathodes, separators and interlayers, and lithium anodes in Li-S batteries is presented and summarized. More importantly, the correlation between the structures (pore volume, specific surface area, degree of pores, and heteroatom-doping) of HPC and the electrochemical performances of Li-S batteries is elaborated. Finally, a discussion on the challenges and future perspectives associated with HPCs for Li-S batteries is provided.

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Coralline‐Like N‐Doped Hierarchically Porous Carbon Derived from Enteromorpha as a Host Matrix for Lithium‐Sulfur Battery

Cited by 36 publications

References 60 publications

Natural Okra Shells Derived Nitrogen‐Doped Porous Carbon to Regulate Polysulfides for High‐Performance Lithium–Sulfur Batteries

Natural Okra Shells Derived Nitrogen‐Doped Porous Carbon to Regulate Polysulfides for High‐Performance Lithium–Sulfur Batteries

N/P Codoped Porous Carbon/One-Dimensional Hollow Tubular Carbon Heterojunction from Biomass Inherent Structure for Supercapacitors

Status and perspectives of hierarchical porous carbon materials in terms of high‐performance lithium–sulfur batteries

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