Multi-channel rod structure hard carbon for high initial Coulombic efficiency and low-potential sodium storage

Liao, Yongchao; Luo, Fenqiang; Lyu, Taiyu; Chen, Minghao; Liu, Chaoran; Xu, Dawei; Chen, Peizhen; Liu, Qian; Wang, Zhuang; Li, Shuirong; Ye, Yueyuan; Wang, Duo; Miao, Cunbiao; Liu, Zhun; Wang, Dechao; Zheng, Zhifeng

doi:10.1016/j.diamond.2022.109392

Cited by 7 publications

(5 citation statements)

References 48 publications

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“…17 This variation trend of S BET is critical to avoid large irreversible consumption of Na + caused by SEI lm formation in the initial cycle, realizing a high ICE. 18,19 Fig. 1d exhibits the corresponding pore size distributions which were calculated using the density-functional-theory (DFT) model.…”

Section: Resultsmentioning

confidence: 99%

“…15 Besides, there is a pair of sharp redox peaks around 0.1 V, and the intensity is highly related to the Na + (de)insertion process. 29 The peak at 0.4 V is weaker in PHC-0.2, suggesting the decreased content of C-O bonds, as well as the enhanced intensity of the peak at 0.1 V is related to the increased C]O content 19 and expanded carbon spacing aer P doping. 32 In subsequent cycles, the curves gradually tend to overlap together, indicating a highly reversible electrochemical reaction process.…”

Section: Resultsmentioning

confidence: 99%

“…1f) The PHC-0.2 has more CO and less C–O than that of HC, indicating that the introduction of PA could change the content of CO, C–O bonds, and the CO functional group has the ability to react reversibly with Na + for energy storage, which may promote the Na + storage capacity. 19,26 At the same time, the lower concentration of C–O in PHC-0.2 would result in less SEI film formation, decreasing irreversible Na + consumption. 18…”

Section: Resultsmentioning

confidence: 99%

“…22,25 (Fig. 1f) The PHC-0.2 has more C]O and less C-O than that of HC, indicating that the introduction of PA could change the content of C]O, C-O bonds, and the C]Ofunctional group has the ability to react reversibly with Na + for energy storage, which may promote the Na + storage capacity 19,…”

mentioning

confidence: 99%

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P-doped spherical hard carbon with high initial coulombic efficiency and enhanced capacity for sodium ion batteries

Liu,

Zhao,

Yao

et al. 2024

Chem. Sci.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

mentioning

confidence: 99%

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P-doped spherical hard carbon with high initial coulombic efficiency and enhanced capacity for sodium ion batteries

Liu,

Zhao,

Yao

et al. 2024

Chem. Sci.

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“…[ 307 ] It is generally believed that a high carbonization temperature will lead to the closure/collapse of pores and the reduction in the number of defects, thereby increasing the ICE and low‐potential plateau capacity of the obtained HC anode. [ 308 ] However, HC synthesized at high pyrolysis temperatures exhibits a high degree of graphitization and narrow interlayer spacing, which degrades the Na storage performance. By investigating the electrochemical performance of HC anodes fabricated by direct pyrolysis of pitch and phenolic resin at temperatures ranging from 1200 to 1600 °C, the optimal carbonization temperature was determined.…”

Section: Anodes and Electrolytes For Use With Practical Cathodesmentioning

confidence: 99%

Practical Cathodes for Sodium‐Ion Batteries: Who Will Take The Crown?

Liang,

Hwang,

Sun

2023

Advanced Energy Materials

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In recent decades, sodium‐ion batteries (SIBs) have received increasing attention because they offer cost and safety advantages and avoid the challenges related to limited lithium/cobalt/nickel resources and environmental pollution. Because the sodium storage performance and production cost of SIBs are dominated by the cathode performance, developing cathode materials with large‐scale production capacity is the key to achieving commercial applications of SIBs. Therefore, developing host materials with high energy density, long cycling life, low production cost, and high chemical/environmental stability is crucial for implementing advanced SIBs. Among the developed cathode materials for SIBs, O3‐type sodiated transition‐metal oxides have attracted extensive attention owing to their simple synthesis methods, high theoretical specific capacity, and sufficient Na content. However, the relatively large Na‐ion radius leads to sluggish diffusion kinetics and inevitable complex phase transitions during the deintercalation/intercalation process, resulting in poor rate capability and cycling stability. Therefore, this review comprehensively summarizes the research progress and modification strategies for O3‐type cathodes, including the component design, surface modification, and optimization of synthesis methods. This work aims to guide the development of commercial layered oxides and provide technical support for the next generation of energy‐storage systems.

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A facile ice‐templating‐induced puzzle coupled with carbonization strategy for kilogram‐level production of porous carbon nanosheets as high‐capacity anode for lithium‐ion batteries

Xing,

Shi,

Jin

et al. 2024

Carbon Energy

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Two‐dimensional porous carbon nanosheets (PCNSs) are considered promising anodes for lithium‐ion batteries due to their synergetic features arising from both graphene and porous structures. Herein, using naturally abundant and biocompatible sodium humate (SH) as the precursor, PCNSs are prepared from the laboratory scale up to the kilogram scale by a method of a facile ice‐templating‐induced puzzle coupled with a carbonization strategy. Such obtained SH‐derived PCNSs (SH‐PCNSs) possess a hierarchical porous structure dominated by mesopores having a specific surface area (~127.19 2 g−1), pore volume (~0.134 cm3 g−1), sheet‐like morphology (~2.18 nm in thickness), and nitrogen/oxygen‐containing functional groups. Owing to these merits, the SH‐PCNSs present impressive Li‐ion storage characteristics, including high reversible capacity (1011 mAh g−1 at 0.1 A g−1), excellent rate capability (465 mAh g−1 at 5 A g−1), and superior cycle stability (76.8% capacitance retention after 1000 cycles at 5 A g−1). It is noted that the SH‐PCNSs prepared from the kilogram‐scale production procedure possess comparable electrochemical properties. Furthermore, coupling with a LiNi1/3Co1/3Mn1/3O2 cathode, the full cells deliver a high capacity of 167 mAh g−1 at 0.2 A g−1 and exhibit an outstanding energy density of 128.8 Wh kg−1, highlighting the practicability of this porous carbon nanosheets and the potential commercial opportunity of the scalable processing approach.

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Multi-channel rod structure hard carbon for high initial Coulombic efficiency and low-potential sodium storage

Cited by 7 publications

References 48 publications

P-doped spherical hard carbon with high initial coulombic efficiency and enhanced capacity for sodium ion batteries

P-doped spherical hard carbon with high initial coulombic efficiency and enhanced capacity for sodium ion batteries

Practical Cathodes for Sodium‐Ion Batteries: Who Will Take The Crown?

A facile ice‐templating‐induced puzzle coupled with carbonization strategy for kilogram‐level production of porous carbon nanosheets as high‐capacity anode for lithium‐ion batteries

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