Graphene oxide wrapped hollow mesoporous carbon spheres as a dynamically bipolar host for lithium–sulfur batteries

Zhe, Rongjie; Zhu, Ting; Wei, Xianhe; Ren, Yuanfu; Qing, Chen; Li, Neng; Wang, Hong‐En

doi:10.1039/d2ta06686f

Cited by 23 publications

(8 citation statements)

References 63 publications

(73 reference statements)

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Section: Resultsmentioning

confidence: 99%

“…31 The ether/hydroxyl and carboxyl surface groups are thought to be beneficial in the hindering of the polysulfide-shuttle by immobilisation of the polysulfides; oxygen surface concentrations for all carbon samples are shown in Table 4. 32,33 The IR of the samples (see Fig. S5, ESI †) becomes far less complex with increasing pyrolysis temperature, due to the thermal etching of the resins' functional groups.…”

Section: Resultsmentioning

confidence: 99%

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Carbons derived from resole-type phenolic resins for use in lithium–sulfur batteries: templating the resins with sulfur leads to enhanced cell performance

Barter,

Mohammad,

Hinder

et al. 2024

Energy Adv.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Carbons derived from resole-type phenolic resins for use in lithium–sulfur batteries: templating the resins with sulfur leads to enhanced cell performance

Barter,

Mohammad,

Hinder

et al. 2024

Energy Adv.

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“…As mentioned above, the preparation of heteroatom-doped core-shell porous carbon anode underwent a series of complex synthesis processes. Therefore, it is necessary to design a novel three-dimensional carbon structure with heteroatom doping and large porosity through a simple synthesis process to further promote the application of DC-PIHC [ 25 – 28 ].…”

Section: Introductionmentioning

confidence: 99%

Novel Bilayer-Shelled N, O-Doped Hollow Porous Carbon Microspheres as High Performance Anode for Potassium-Ion Hybrid Capacitors

Pan

Yang

Xie³

et al. 2023

Nano-Micro Lett.

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With the advantages of high energy/power density, long cycling life and low cost, dual-carbon potassium ion hybrid capacitors (PIHCs) have great potential in the field of energy storage. Here, a novel bilayer-shelled N, O-doped hollow porous carbon microspheres (NOHPC) anode has been prepared by a self-template method, which is consisted of a dense thin shell and a hollow porous spherical core. Excitingly, the NOHPC anode possesses a high K-storage capacity of 325.9 mA h g−1 at 0.1 A g−1 and a capacity of 201.1 mAh g−1 at 5 A g−1 after 6000 cycles. In combination with ex situ characterizations and density functional theory calculations, the high reversible capacity has been demonstrated to be attributed to the co-doping of N/O heteroatoms and porous structure improved K+ adsorption and intercalation capabilities, and the stable long-cycling performance originating from the bilayer-shelled hollow porous carbon sphere structure. Meanwhile, the hollow porous activated carbon microspheres (HPAC) cathode with a high specific surface area (1472.65 m2 g−1) deriving from etching NOHPC with KOH, contributing to a high electrochemical adsorption capacity of 71.2 mAh g−1 at 1 A g−1. Notably, the NOHPC//HPAC PIHC delivers a high energy density of 90.1 Wh kg−1 at a power density of 939.6 W kg−1 after 6000 consecutive charge–discharge cycles.

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“…[16][17][18] The strong chemical affinity and promoted redox reaction kinetics can effectively alleviate the LiPSs shuttling, while the lithiophilic sites can induce uniform Li nucleation. [19][20][21][22] Besides the structural design and composition optimization, modulating the interface also can enhance the electrochemical properties of Li-S batteries. It has been well demonstrated that constructing heterostructural interface by coupling the strong adsorption capability and high electrocatalytic activity can significantly promote the adsorption-conversion kinetics of LiPSs on S cathode.…”

Section: Introductionmentioning

confidence: 99%

Structural and Interfacial Manipulation of Multifunctional Skeletons Enabled Shuttling‐Free and Dendrite‐Free Li–S Full Batteries

Zhang,

Luo,

Guo

et al. 2023

Small

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Li–S batteries are regarded as promising devices for energy storage systems owing to high energy density, low cost, and environmental friendliness. However, challenges of polysulfides shuttling in sulfur cathode and dendrite growth of lithium anode severely hinder the practical application. Developing advanced skeletons simultaneously regulating the cathode and anode is significant and challenging. Hence, a novel and scalable strategy combining spray drying and topological nitriding is proposed, and hierarchically assembled rGO hollow microspheres encapsulated highly porous nanospheres consisted of ultrafine Nb4N5‐Nb2O5 or Nb4N5 nanoparticles as multifunctional skeletons for S and Li are designed. In such unique architecture, a 3D highly porous structure provides abundant void space for loading of S and Li, and accommodates volume change during cycling. Moreover, Nb4N5‐Nb2O5 heterostructured interface promotes adsorption‐conversion process of polysulfides, while strong lithophilic Nb4N5 induces the selective infiltration of Li into the void of the skeleton and regulates the uniform deposition and growth. More interestingly, in situ generated Li3N@Nb ion/electron conducting interfaces induced by the reaction of Nb4N5 and Li reduce the nucleation overpotential and induce selective deposition of Li into the cavity. Consequently, the Li–S full cell exhibits superior cycling stability and impressive rate performance with a low capacity ratio of negative/positive.

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Graphene oxide wrapped hollow mesoporous carbon spheres as a dynamically bipolar host for lithium–sulfur batteries

Abstract: Lithium−sulfur batteries (LSBs) hold a great potential as the next-generation electrochemical energy storage and conversion system owing to their high theoretical specific capacity (1675 mAh g-1). However, the shuttling of...

Cited by 23 publications

References 63 publications

Carbons derived from resole-type phenolic resins for use in lithium–sulfur batteries: templating the resins with sulfur leads to enhanced cell performance

Carbons derived from resole-type phenolic resins for use in lithium–sulfur batteries: templating the resins with sulfur leads to enhanced cell performance

Novel Bilayer-Shelled N, O-Doped Hollow Porous Carbon Microspheres as High Performance Anode for Potassium-Ion Hybrid Capacitors

Structural and Interfacial Manipulation of Multifunctional Skeletons Enabled Shuttling‐Free and Dendrite‐Free Li–S Full Batteries

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