Hollow porous carbon spheres for high initial coulombic efficiency and low-potential sodium ion storage

Lyu, Taiyu; Liang, Lizhe; Shen, Pei Kang

doi:10.1016/j.jcis.2021.06.158

Cited by 24 publications

(6 citation statements)

References 45 publications

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“…The R ct value of PTA‐Lys‐800 (381.4 Ω) is much smaller than those of PTA‐Lys‐700 (569.0 Ω) and PTA‐Lys‐900 (453.2 Ω). By contrast, PTA‐Lys‐800 shows the smallest semicircular structure and the lowest charge transfer resistance, indicating that moderate N doping enhances the electronic conductivity and effectively promotes the transport of Na + [32] …”

Section: Resultsmentioning

confidence: 97%

“…By contrast, PTA-Lys-800 shows the smallest semicircular structure and the lowest charge transfer resistance, indicating that moderate N doping enhances the electronic conductivity and effectively promotes the transport of Na + . [32] CV analysis is performed at different scan rates ranging from 0.2 to 1.0 mV s À 1 to understand the kinetics and mechanism of Na + storage at the electrode. With the increase of scanning speed, all CV curves have similar shapes and the curve become wider, indicating the surface dominated characteristic (Figure 6b).…”

Section: Chemsuschemmentioning

confidence: 99%

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High Proportion of Active Nitrogen‐Doped Hard Carbon Based on Mannich Reaction as Anode Material for High‐Performance Sodium‐Ion Batteries

et al. 2023

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The potential for energy storage in carbonaceous materials is well known. Heteroatom doping – particularly nitrogen doping – can further enhance their electrochemical performance. The type of N configuration determines the reactivity of doped carbon. It remains a challenge, however, to achieve a high ratio of active N (N‐5) in N‐doped carbon. In this study, a high proportion of active nitrogen‐doped hard carbon (PTA‐Lys‐800) is synthesized by the classical Mannich reaction, using tannic acid (TA) and amino acid as precursors. For sodium‐ion batteries (SIBs), PTA‐Lys‐800 provides outstanding cycling stability and rate performance (338.8 mAh g−1 at 100 mA g−1 for 100 cycles, a capacity retention of 86 %; 131.1 mAh g−1 at 4 A g−1 after 5000 cycles). The excellent performance of PTA‐Lys‐800 is attributed to stable hierarchical pore structure, abundant defects, and a high proportion of N‐5 formed during the carbonization process. Based on a detailed fundamental analysis, the pseudocapacitance mechanism is found to contribute to the higher sodium storage process in PTA‐Lys‐800. The Na‐adsorption mechanism is further explored through ex situ Raman spectroscopy. A new method is presented for designing carbonaceous anode materials with high capacity and long cycle life.

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Section: Resultsmentioning

confidence: 97%

Section: Chemsuschemmentioning

confidence: 99%

High Proportion of Active Nitrogen‐Doped Hard Carbon Based on Mannich Reaction as Anode Material for High‐Performance Sodium‐Ion Batteries

et al. 2023

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“…(c) Initial galvanostatic charge–discharge (GCD) curves at 0.1 A g –1 and (d) rate capabilities of PCS and PCS@V@C. (e) Capacity values of PCS and PCS@V@C at different rates. (f) Comparison of rate capability between PCS@V@C and reported carbon anodes for NIBs. ,− Cycling behaviors of HC anode materials were at (g) 0.1 A g –1 and (h) 1 A g –1 .…”

Section: Resultsmentioning

confidence: 99%

Engineering Ultrathin Carbon Layer on Porous Hard Carbon Boosts Sodium Storage with High Initial Coulombic Efficiency

Cheng,

Li,

Zhang

et al. 2023

ACS Nano

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Hard carbon (HC) has been widely adopted as the anode material for sodium ion batteries (NIBs). However, it is troubled by a low initial Coulombic efficiency (ICE) due to its porous structure. Herein, a graphitized and ultrathin carbon layer coating on HC is proposed to solve this challenge. The as-prepared porous carbon material coated with an ultrathin carbon layer composite (PCS@V@C) exhibits a cavity structure, which is prepared by using bis(cyclopentadienyl) nickel (CP−Ni) as the carbon source for outer coating, glucose carbon spheres as porous carbon, and introducing a silica layer to facilitate the coating process. When utilized as the anode for NIBs, the material shows an ICE increase from 47.1% to 85.3%, and specific capacity enhancement at 0.1 A g −1 from 155.3 to 216.7 mA h g −1 . Moreover, its rate capability and cycling performance are outstanding, demonstrating a capacity of 140.3 mA h g −1 at 10 A g −1 , and a retaining capacity of 225.6 mA h g −1 after 300 cycles at 0.1 A g −1 with the Coulombic efficiency of 100% at the second cycle. The excellent electrochemical performance of the PCS@V@C is attributed to the ultrathin carbon layer, which is beneficial for the formation of a stable solid electrolyte interphase (SEI) film. Therefore, this study provides a feasible surface modification method for the preparation of anode materials for NIBs with high specific capacity and ICE.

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“…Interestingly, biomass derived carbon materials can inherit or evolve unique microstructures, including 0D spherical structure, 1D fibrous structure, 2D lamellar structure, and 3D substrate structure. [107][108][109][110] Recently, biomass derived functional carbon has also been reported as substrates for LMA. In 2017, Wan and co-workers [111] prepared a lightweight, independent, and flexible 3D hollow carbon fiber (3D-HCF) container by pyrolysis of the cotton precursor at high temperatures.…”

Section: Biomass Derived Carbon-based Substratementioning

confidence: 99%

Carbon/Lithium Composite Anode for Advanced Lithium Metal Batteries: Design, Progress, In Situ Characterization, and Perspectives

Lyu

Luo

Wang

et al. 2022

Advanced Energy Materials

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The lithium metal anode is a competitive candidate for next‐generation lithium‐ion batteries for its low redox potential and ultra‐high theoretical specific capacity. Nevertheless, obstacles regarding heterogeneous lithium deposition, dendrite growth, and poor Coulombic efficiency limit its practical application. Among rational electrode designs, carbon materials have been regarded as feasible hosts for stabilizing lithium to address the above issues due to their light weight, high conductivity, and adjustable physicochemical properties. Therefore, tremendous efforts have been made to design stereoscopic carbon materials with multitudinous lithiophilic sites and large specific surface areas to facilitate rapid lithium‐ion flux, nucleation and mitigate lithium dendrite formation by controlling the kinetics of lithium deposition. Furthermore, the mechanism of lithium plating/stripping is commendably elucidated with the help of advanced in situ characterization techniques. This progress report systematically reviews progress in carbon materials/lithium composite anodes for lithium metal batteries and the detailed parts are as follows: 1) carbon/lithium composite methods; 2) design lithiophilic mechanism; 3) various carbon materials substrates; 4) advanced in situ characterization techniques for lithium metal anodes; and 5) prospects toward the practical applications of advanced lithium metal batteries. This review provides new insights into lithium metal batteries’ technological development and practical application.

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Hollow porous carbon spheres for high initial coulombic efficiency and low-potential sodium ion storage

Cited by 24 publications

References 45 publications

High Proportion of Active Nitrogen‐Doped Hard Carbon Based on Mannich Reaction as Anode Material for High‐Performance Sodium‐Ion Batteries

High Proportion of Active Nitrogen‐Doped Hard Carbon Based on Mannich Reaction as Anode Material for High‐Performance Sodium‐Ion Batteries

Engineering Ultrathin Carbon Layer on Porous Hard Carbon Boosts Sodium Storage with High Initial Coulombic Efficiency

Carbon/Lithium Composite Anode for Advanced Lithium Metal Batteries: Design, Progress, In Situ Characterization, and Perspectives

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