Spontaneous exfoliation and tailoring derived oxygen-riched porous carbon nanosheets for superior Li+ storage performance

Liu, Yongchao; Shi, Minjie; Han, Meinan; Yang, Jun; Yu, Jinhong; Narayanasamy, Mugilan; Dai, Kun; Angaiah, Subramania

doi:10.1016/j.cej.2020.124104

Cited by 32 publications

(17 citation statements)

References 56 publications

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“…27,28 According to the different precursors, hard carbon can be divided into resin-based hard carbon, 29,30 pitch-based hard carbon [31][32][33] and biomass-based hard carbon. 12,[34][35][36] Among them, biomass-derived hard carbon represents great advantages in terms of precise nature-made structure, sustainable carbon sources, low cost as well as large-scale production. [37][38][39][40] Up to now, corn stalks, 41 coffee grounds, 42 lignin, 43 egg white, 44 wheat flour 39 and other biomass materials have been applied as potential precursors to prepare carbon anode materials in achieving desirable performance LIBs.…”

Section: Introductionmentioning

confidence: 99%

“…The microstructure and performances of the final hard carbon materials depend strongly on the nature of the precursor 27,28 . According to the different precursors, hard carbon can be divided into resin‐based hard carbon, 29,30 pitch‐based hard carbon 31‐33 and biomass‐based hard carbon 12,34‐36 . Among them, biomass‐derived hard carbon represents great advantages in terms of precise nature‐made structure, sustainable carbon sources, low cost as well as large‐scale production 37‐40 .…”

Section: Introductionmentioning

confidence: 99%

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Self‐standing hard carbon anode derived from hyper‐linked nanocellulose with high cycling stability for lithium‐ion batteries

Sun

et al. 2021

EcoMat

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The utilization of binders has severely hindered ionic diffusion and electron transfer in the traditional lithium-ion battery. Herein, a self-standing hard carbon film using nanocellulose as precursor has been constructed as binder-free electrodes via two-step thermal treatment. The cyclization and aromatization of small molecular fragments promote the formation of hyper-crosslinked framework with abundant welded junctions. Importantly, carbon nanofibers not only serve as an inter-connected conductive network for fast electron transfer, but also as an interlinked mechanical skeleton for convenient Li + diffusion and electrode structural stability. Furthermore, the optimized carbon film, with accessible redox-active carbonyl groups (C O) and abundant micropores, is beneficial for Li + accommodation. It exhibits high reversible capacity of 513.1 mAh g −1 at 50 mA g −1 and excellent cycle stability to extend over 1000 cycles without signs of decay. This study provides an efficient strategy for the design of high-performance biomass-derived anode materials with stablestructure for alkaline batteries.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Self‐standing hard carbon anode derived from hyper‐linked nanocellulose with high cycling stability for lithium‐ion batteries

Sun

et al. 2021

EcoMat

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“…Figure S1 shows their typical appearances to be granular and irregularly shaped, measuring 2–10 μm in lateral size. According to a previous study, the diffusion coefficient of Li + for intercalation in highly oriented pyrolytic graphite ranges from 10 –11 to 10 –9 cm 2 s –1 , depending on the applied voltage, and much lower if in synthetic carbon . Considering such facts, it is important to implant smooth pathways for Li + transportation and the realization of high-rate-power batteries.…”

Section: Resultsmentioning

confidence: 99%

“…According to a previous study, the diffusion coefficient of Li + for intercalation in highly oriented pyrolytic graphite ranges from 10 −11 to 10 −9 cm 2 s −1 , depending on the applied voltage, and much lower if in synthetic carbon. 37 Considering such facts, it is important to implant smooth pathways for Li + transportation and the realization of high-rate-power batteries. Figure 1a typifies the texture of Zn 1 NC in an amorphous state.…”

Section: Resultsmentioning

confidence: 99%

N₄-Vacancy-Functionalized Carbon for High-Rate Li-Ion Storage

Zhao

Kumar

et al. 2022

ACS Appl. Mater. Interfaces

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Although heteroatom doping and pore management separately influence the Li + adsorption and Li + diffusion properties, respectively, merging their functions into a single unit is intriguing and has not been fully investigated. Herein, we have successfully incorporated both heteroatom doping and pore management within the same functional unit of N 4 -vacancy motifs, which is realized via acid etching of formamide-derived Zn−N 4functionalized carbon materials (Zn 1 NC). The N 4 -vacancy-rich porous carbon (V-NC) renders multiple merits: (1) a high N content of 13.94 atom % for large Li-storage capacity, (2) edged unsaturated N sites favoring highly efficient Li + adsorption and desolvation, and (3) a shortening of the Li + diffusion length through N 4 vacancy, thereby enhancing the Li-storage kinetics and high-rate performance. This work serves as an inspiration for the creation of heteroatom-edged porous structures with controllable pore sizes for high-rate alkali-ion battery applications.

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“…Airflow-annealing is a common heat treatment technology in the field of metal processing and organic synthesis. Recently, sufficient experimental data have shown that airflow-annealing can introduce O-containing functional groups into materials [ 18 ]. In this work, O-doped orange peel-derived carbon (OPDC) with 13.38% O content was prepared by combining carbonization and airflow-annealing.…”

Section: Introductionmentioning

confidence: 99%

O-Doping Configurations Reduce the Adsorption Energy Barrier of K-Ions to Improve the Electrochemical Performance of Biomass-Derived Carbon

Zhao

Chen

et al. 2022

Micromachines

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In recent years, atomic-doping has been proven to significantly improve the electrochemical performance of biomass-derived carbon materials, which is a promising modification strategy. Among them, there are relatively few reports about O-doping. Here, porous carbon derived from orange peel was prepared by simple carbonization and airflow-annealing processes. Under the coordination of microstructure and surface groups, the derived carbon had excellent electrochemical performance for the K-ion batteries' anode, including a high reversible specific capacity of 320.8 mAh/g, high rate performance of 134.6 mAh/g at a current density of 2000 mA/g, and a retention rate of 79.5% even after 2000 long-term cycles, which shows great application potential. The K-ion storage mechanisms in different voltage ranges were discussed by using various characterization techniques, that is, the surface adsorbed of K-ionswas in the high-potential slope area, and the intercalation behavior corresponded to the low-potential quasi-plateau area. In addition, the density functional theory calculations further confirmed that O-doping can reduce the adsorption energy barrier of K-ions, change the charge density distribution, and promote the K-ion storage. In particular, the surface Faraday reaction between the C=O group and K-ions plays an important role in improving the electrochemical properties.

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Spontaneous exfoliation and tailoring derived oxygen-riched porous carbon nanosheets for superior Li+ storage performance

Cited by 32 publications

References 56 publications

Self‐standing hard carbon anode derived from hyper‐linked nanocellulose with high cycling stability for lithium‐ion batteries

Self‐standing hard carbon anode derived from hyper‐linked nanocellulose with high cycling stability for lithium‐ion batteries

N₄-Vacancy-Functionalized Carbon for High-Rate Li-Ion Storage

O-Doping Configurations Reduce the Adsorption Energy Barrier of K-Ions to Improve the Electrochemical Performance of Biomass-Derived Carbon

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Spontaneous exfoliation and tailoring derived oxygen-riched porous carbon nanosheets for superior Li+ storage performance

Cited by 32 publications

References 56 publications

Self‐standing hard carbon anode derived from hyper‐linked nanocellulose with high cycling stability for lithium‐ion batteries

Self‐standing hard carbon anode derived from hyper‐linked nanocellulose with high cycling stability for lithium‐ion batteries

N4-Vacancy-Functionalized Carbon for High-Rate Li-Ion Storage

O-Doping Configurations Reduce the Adsorption Energy Barrier of K-Ions to Improve the Electrochemical Performance of Biomass-Derived Carbon

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N₄-Vacancy-Functionalized Carbon for High-Rate Li-Ion Storage