Mesopore-dominated hollow carbon nanoparticles prepared by simple air oxidation of carbon black for high mass loading supercapacitors

Fan, Cheng-Wei; Dong, Yue; Liu, Yifan; Zhang, Lihui; Wang, Dengke; Lin, Xieji; Lv, Yan; Zhang, Su; Song, Huaihe; Jia, Dianzeng

doi:10.1016/j.carbon.2020.01.034

Cited by 64 publications

(50 citation statements)

References 38 publications

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“…For GH5-1000, the only one broader exothermic peak located between the HCS-1000 and rGO-1000 suggests the uniform mixture between graphene nanosheets and HCS, and the two phases are not just physically mixed but connected to each other through chemical bonds. [23] Powder X-ray diffraction (XRD) is tested to investigate the crystalline degree of the three samples as shown in Figure 2c. All the three samples exhibit broad diffraction peaks at around 23° and 43°, corresponding to the (002) and (100) planes.…”

Section: Resultsmentioning

confidence: 99%

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A General Multi‐Interface Strategy toward Densified Carbon Materials with Enhanced Comprehensive Electrochemical Performance for Li/Na‐Ion Batteries

Yuan

Meng

et al. 2022

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power density. [1,2] Among all the materials, carbon materials including graphite, hard carbon and soft carbon are the usually commercialized products owing to the stable structure, desirable specific capacity, controllable morphology, low cost and low toxicity. [3][4][5] However, there is a great challenge to realize the unification of both high gravimetric/volumetric capacity and high rate performance for carbon anode materials.The improvement of rate performance of carbon anode materials is dominated by the ion and electron diffusion kinetics. For the ion diffusion process, nanostructure, porous or hollow structure can shorten the ion diffusion distance, while the enlarged carbon layer distance can reduce the ion diffusion resistance. [6][7][8][9] All the above structures can effectively facilitate the ion diffusion kinetics. Xu et al. prepared 3D graphene foams with plenty of pores, large surface area, and enlarged interlayer distance between graphene layers, which presents the superior rate capability of 137.7 mA h g -1 at the high current density of 5 A g -1 as anode materials in SIBs. [10] However, all the above methods inevitably result in the high surface area and low packing density, which will finally lead to the low initial coulombic efficiency (ICE) and unsatisfactory volumetric specific capacity. Increasing the electronic conductivity is another strategy to improve rate performance. Carbon nanotubes and graphene are usually used as the conductive agents to enhance the electrical property of electrode materials and further the high-rate performance of batteries. [11][12][13][14][15] Zhu et al. prepared graphene-scaffolded silicon/ graphite composite with graphene hydrogel, which present increased rate capability than the silicon/graphite composite. [14] Nevertheless, these conductive networks can only improve the surface electronic conductivity among the common micro-sized particles, and fail to increase the inner conductivity. In fact, some recent works suggest that the planar structure of graphene may block the shortest diffusion path for ion and finally increase the ion diffusion impedance. [16,17] It is still a great challenge to realize the comprehensive improvement of the electrochemical performance, especially the rate performance and high density synchronous improvement, for the electrode materials.Fast charging rate and large energy storage are key requirements for lithiumion batteries (LIBs) in electric vehicles. Developing electrode materials with high volumetric and gravimetric capacity that could be operated at a high rate is the most challenging problem. In this work, a general multi-interface strategy toward densified carbon materials with enhanced comprehensive electrochemical performance for Li/Na-ion batteries is proposed. The mixture of graphene oxide and sucrose solution is sprayed into a water/oil system and furtherly carbonized to get graphene/hard carbon spheres (GHSs). In this material, abundant ingenious internal interfaces between the crystalline graphene and the carbon matr...

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Section: Resultsmentioning

confidence: 99%

“…Even compared with the hollow or porous carbonaceous materials (Refs. [10][11][12][13][14][20][21][22][23][24], Supporting Information), GH5-1000 still exhibits a competitive level. Besides that, the low surface area and high packing density all make GH5-1000 exhibits a more promising commercialized prospect than the hollow or porous materials.…”

Section: Resultsmentioning

confidence: 99%

A General Multi‐Interface Strategy toward Densified Carbon Materials with Enhanced Comprehensive Electrochemical Performance for Li/Na‐Ion Batteries

Yuan

Meng

et al. 2022

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“…Significantly, the electrode exhibits ultrahigh areal capacitance of 9501 mF cm −2 , which belongs to the highest areal capacitance of carbonaceous electrodes reported to date (Figure 3h). [21,[33][34][35][36][37][38][39][40][41][42][43] Even at an ultrahigh current density of 30 mA cm −2 , a high areal capacitance of 3975 mF cm −2 can still be retained (Figure S17c, Supporting Information). The corresponding gravimetric capacitance based on the total mass of the CNT and nanoparticles is calculated to be 315.6 F g −1 even at high areal mass loading (30.1 mg cm −2 ).…”

Section: Resultsmentioning

confidence: 99%

Interface Engineering on Cellulose‐Based Flexible Electrode Enables High Mass Loading Wearable Supercapacitor with Ultrahigh Capacitance and Energy Density

Chen

Ling

Huang

et al. 2021

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For practical energy storage devices, a bottleneck is to retain decent integrated performances while increasing the mass loading of active materials to the commercial level, which highlights an urgent need for novel electrode structure design strategies. Here, an active nitrogen‐doped carbon interface with “high conductivity, high porosity, and high electrolyte affinity” on a flexible cellulose electrode surface is engineered to accommodate 1D active materials. The high conductivity of interface favors fast electron transport, while its high porosity and high electrolyte affinity properties benefit ion migration. As a result, the flexible anode accommodated by carbon nanotubes achieves an ultrahigh capacitance of 9501 mF cm−2 (315.6 F g−1) at a high mass loading of 30.1 mg cm−2, and the flexible cathode accommodated by polypyrrole nanotubes realizes a remarkably high capacitance of 6212 mF cm−2 (248 F g−1, 25 mg cm−2). The assembled flexible quasi‐solid‐state asymmetric supercapacitor delivers a maximum energy density of 1.42 mWh cm−2 (2.2 V, 2105 mF cm−2), representing the highest value among all reported flexible supercapacitors. This versatile design concept provides a new way to prepare high performance flexible energy storage devices.

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“…For example, synthetic polymers are high cost, and biomass resources are complex in composition. Therefore, many researchers remain committed to finding suitable precursors to prepare hierarchical porous carbons (HPCs) 25‐37 . In the previous reports, HPCs were prepared from CLR by KOH activation with the introduction of a certain mineral or organic additives 38 .…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, many researchers remain committed to finding suitable precursors to prepare hierarchical porous carbons (HPCs). [25][26][27][28][29][30][31][32][33][34][35][36][37] In the previous reports, HPCs were prepared from CLR by KOH activation with the introduction of a certain mineral or organic additives. 38 Porous carbon nanosheets with developed porous structure were successfully prepared using urea and asphaltene extracted from CLR.…”

Section: Introductionmentioning

confidence: 99%

Self‐template porous carbon by direct activation of high‐ash coal liquefaction residue for high‐rate supercapacitor electrodes

Wang

Yang

et al. 2020

Int J Energy Res

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Mesopore-dominated hollow carbon nanoparticles prepared by simple air oxidation of carbon black for high mass loading supercapacitors

Cited by 64 publications

References 38 publications

A General Multi‐Interface Strategy toward Densified Carbon Materials with Enhanced Comprehensive Electrochemical Performance for Li/Na‐Ion Batteries

A General Multi‐Interface Strategy toward Densified Carbon Materials with Enhanced Comprehensive Electrochemical Performance for Li/Na‐Ion Batteries

Interface Engineering on Cellulose‐Based Flexible Electrode Enables High Mass Loading Wearable Supercapacitor with Ultrahigh Capacitance and Energy Density

Self‐template porous carbon by direct activation of high‐ash coal liquefaction residue for high‐rate supercapacitor electrodes

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