High-yield and <i>in situ</i> fabrication of high-content nitrogen-doped graphene nanoribbons@Co/CoOOH as an integrated sulfur host towards Li–S batteries

Tan, Ke; Yang, Lei; Tan, Zhaolin; Zhang, Jinyang; Hou, Linrui; Yuan, Changzhou

doi:10.1039/c9ta13414j

Cited by 42 publications

(29 citation statements)

References 60 publications

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“…1490, and ca. 1592 cm −1 belong to the I, D, D′′, and G bands, respectively [9] . Particularly, besides the low‐content D′′ band, the I D / I G value (ca.…”

Section: Resultsmentioning

confidence: 99%

Unveiling Intrinsic Potassium Storage Behaviors of Hierarchical Nano Bi@N‐Doped Carbon Nanocages Framework via In Situ Characterizations

Sun

Liu

et al. 2021

Angewandte Chemie

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Metallic bismuth has drawn attention as a promising alloying anode for advanced potassium ion batteries (PIBs). However, serious volume expansion/electrode pulverization and sluggish kinetics always lead to its inferior cycling and rate properties for practical applications. Therefore, advanced Bi‐based anodes via structural/compositional optimization and sur‐/interface design are needed. Herein, we develop a bottom‐up avenue to fabricate nanoscale Bi encapsulated in a 3D N‐doped carbon nanocages (Bi@N‐CNCs) framework with a void space by using a novel Bi‐based metal‐organic framework as the precursor. With elaborate regulation in annealing temperatures, the optimized Bi@N‐CNCs electrode exhibits large reversible capacities and long‐duration cyclic stability at high rates when evaluated as competitive anodes for PIBs. Insights into the intrinsic K+‐storage processes of the Bi@N‐CNCs anode are put forward from comprehensive in situ characterizations.

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“…1490, and ca. 1592 cm −1 belong to the I, D, D′′, and G bands, respectively [9] . Particularly, besides the low‐content D′′ band, the I D / I G value (ca.…”

Section: Resultsmentioning

confidence: 99%

Unveiling Intrinsic Potassium Storage Behaviors of Hierarchical Nano Bi@N‐Doped Carbon Nanocages Framework via In Situ Characterizations

Sun

Liu

et al. 2021

Angewandte Chemie

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“…13 nm Bi NPs in the hollow N-CNCs with clear internal void space,that is,atypical yolk-shell structure.M eanwhile,h igh-resolution TEM (HRTEM) observation (Figure 1g), corresponding to the magnified blue rectangular region in Figure 1f,manifests the well-defined lattice fringes with as pacing of about 0.39 nm, larger than the (002) of classic graphite (0.335 nm), proving that the elemental Ni ss uccessfully doped in the CNCs. [9] Besides,t he distinct lattice fringes with the spacing of ca. 0.33 nm are assigned to the interplanar distance of (012) crystalline plane of the hexagonal Bi (JCPDS No.44-1246, space group R3 m (166)).…”

Section: Resultsmentioning

confidence: 99%

Unveiling Intrinsic Potassium Storage Behaviors of Hierarchical Nano Bi@N‐Doped Carbon Nanocages Framework via In Situ Characterizations

et al. 2021

Self Cite

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Metallic bismuth has drawn attention as apromising alloying anode for advanced potassium ion batteries (PIBs). However,s erious volume expansion/electrode pulverization and sluggish kinetics always lead to its inferior cycling and rate properties for practical applications.T herefore,a dvanced Bibased anodes via structural/compositional optimization and sur-/interface design are needed. Herein, we develop abottomup avenue to fabricate nanoscale Bi encapsulated in a3 DNdoped carbon nanocages (Bi@N-CNCs) framework with av oid space by using an ovel Bi-based metal-organic framework as the precursor.W ith elaborate regulation in annealing temperatures,t he optimizedB i@N-CNCs electrode exhibits large reversible capacities and long-duration cyclic stability at high rates when evaluated as competitive anodes for PIBs. Insights into the intrinsic K +-storage processes of the Bi@N-CNCs anode are put forward from comprehensive in situ characterizations.

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“…1260 is normally attributed to the sp 2 ‐sp 3 bonds, disorder in the graphitic lattice and the D’’ band at ca. 1550 is related to the presence of amorphous phases [31–33] …”

Section: Resultsmentioning

confidence: 99%

“…1550 is related to the presence of amorphous phases. [31][32][33] The effect that the phosphate functionalization has on the crystallinity of these samples was evaluated by X-Ray diffractometry ( Figure S1). It can be observed a prominent and broad peak registered in the 20-30°range for both samples.…”

Section: Battery-type Electrodementioning

confidence: 99%

Phosphorus‐Functionalized Graphene for Lithium‐Ion Capacitors with Improved Power and Cyclability

Moreno‐Fernández

Granados-Moreno

Gómez‐Urbano

et al. 2020

Batteries & Supercaps

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Herein, we report an easy approach for the preparation of graphene‐based materials suitable as electrodes for lithium‐ion capacitors (LICs). To the best of our knowledge, this is the first time that phosphorus‐functionalized graphene oxide (rGO800‐P) is used as negative (battery‐type) electrode in LICs technology. An activated carbon derived from the pyrolysis of graphene‐carbon composite served as positive (capacitor‐type) electrode. While phosphorus functionalization on the negative electrode enables fast Li+ kinetics during insertion/extraction processes, the flat‐shaped morphology, large surface area and proper pore size distribution of the positive electrode enhance the double‐layer formation. Full LICs optimization, oversizing the negative electrode allows operating in the extended voltage window of 1.5–4.5 V delivering high energy and power values (91 Wh kg−1AM at 145 W kg−1AM and 33 Wh kg−1AM at 26,000 W kg−1AM) without compromising the cycling performance (76 % capacitance retention after 10,000 cycles).

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High-yield and in situ fabrication of high-content nitrogen-doped graphene nanoribbons@Co/CoOOH as an integrated sulfur host towards Li–S batteries

Abstract: 1D high-content N-doped graphene nanoribbons@Co/CoOOH is in situ fabricated in high yield as an integrated host for Li–S batteries, thanks to its exceptional electronic conductivity, strong chemical/physical adsorption and high catalytic activity.

Cited by 42 publications

References 60 publications

Unveiling Intrinsic Potassium Storage Behaviors of Hierarchical Nano Bi@N‐Doped Carbon Nanocages Framework via In Situ Characterizations

Unveiling Intrinsic Potassium Storage Behaviors of Hierarchical Nano Bi@N‐Doped Carbon Nanocages Framework via In Situ Characterizations

Unveiling Intrinsic Potassium Storage Behaviors of Hierarchical Nano Bi@N‐Doped Carbon Nanocages Framework via In Situ Characterizations

Phosphorus‐Functionalized Graphene for Lithium‐Ion Capacitors with Improved Power and Cyclability

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