High-throughput fabrication of 3D N-doped graphenic framework coupled with Fe3C@porous graphite carbon for ultrastable potassium ion storage

Han, Kun; Liu, Zhiwei; Li, Ping; Yu, Qiyao; Wang, Wei; Lao, Cheng‐Yen; He, Donglin; Zhao, Wang; Suo, Guoquan; Guo, Hao; Song, Lei; Qin, Mingli; Qu, Xuanhui

doi:10.1016/j.ensm.2019.01.016

Cited by 100 publications

(51 citation statements)

References 51 publications

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“…[ 24–26 ] Besides, gas‐phase templates such as gas bubbles and foams are also popular due to their facile and economical process. [ 23,27 ] Despite a great process, several challenges still remain. For example, salt or gas‐phase templates are simple and scalable, but always create large‐size pores, giving rise to the severe decrease of the volumetric capacitance.…”

Section: Introductionmentioning

confidence: 99%

Liquid‐State Templates for Constructing B, N, Co‐Doping Porous Carbons with a Boosting of Potassium‐Ion Storage Performance

Feng

Liu

et al. 2020

Advanced Energy Materials

125

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lithium resources greatly limits the large-scale promotion and application of LIBs. [4-7] As possible candidates, sodium and potassium ion systems are receiving intense attention owing to their low cost and high natural abundant resources. [8-14] Particularly, recent studies indicated that compared with sodium ions, potassium ions exhibited more merits on the basis of its similar intercalation behaviors in graphite and closer redox potential (K/K + , −2.92 V) with Li ions. [15,16] Therefore, potassium ion energy storage system, including potassium ion batteries (PIBs) and potassium ion hybrid capacitors (PIHCs) demonstrates a promising prospect in practical applications, and the corresponding studying upsurge is just beginning. [16,17] In the exploration of potassium electrode materials, porous carbons are highly preferable owing to their elastic framework, rich porosity and good conductivity, which can efficiently alleviate the volume expansion caused by the larger K + (ionic radius, 1.38 Å) intercalation and provides more pathways for fast K + diffusion. [16,18-21] So far, many carbons with various porosities have been successfully used in potassium ion system, exhibiting excellent electrochemical performance. [22,23] In current strategies of producing porous carbons, the template method is considered as one ideal way owing to its good control of porous architectures. [16] Presently, solid-phase templates including salts, SiO 2 nanospheres, and metal foams have been applied widely in constructing porous carbons. [24-26] Besides, gas-phase templates such as gas bubbles and foams are also popular due to their facile and economical process. [23,27] Despite a great process, several challenges still remain. For example, salt or gas-phase templates are simple and scalable, but always create large-size pores, giving rise to the severe decrease of the volumetric capacitance. [28] The nanosized solid-phase templates can lead to small-size pores, but are hindered by high cost and the probability of contamination from the removal process. [29] Therefore, the development of a scalable and green template strategy for the synthesis of carbons with rich nanosized porosity is important. Notably, in contrast to the success of solid-and gas-phase templates, liquid-state templates are rarely reported so far, which might be Template-assistant design and fabrication of porous carbon electrode materials has experienced great progress throughout the past decades and yielded lots of successes via various gas or solid state templates. Nevertheless, liquid-state templates are rather rare in preparing porous carbon materials to date. In this work, melting B 2 O 3 beads are used as both templates and a B dopant, leading to unique B, N co-doping hierarchically porous carbons containing a "bubble pool"-like skeleton built of interconnected carbon nanobubbles. Notably, an interesting amending effect of doped B atoms on the N-doped carbon network can be identified for the first time, which creates a "paddy field"-like hybrid microstructure wi...

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Section: Introductionmentioning

confidence: 99%

Liquid‐State Templates for Constructing B, N, Co‐Doping Porous Carbons with a Boosting of Potassium‐Ion Storage Performance

Feng

Liu

et al. 2020

Advanced Energy Materials

125

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“…Lithium-ion batteries (LIBs) as a promising secondary battery have been extensively used in the fields of vehicles and electronic devices due to their high capacity [1][2][3]. However, the rising cost and limited reserve of Li resources restrict the further practical applications of LIBs, which offers the potential opportunities for other rechargeable batteries, such as aluminum-ion, potassium-ion, sodium-ion, magnesium-ion, and dual-ion batteries [4][5][6][7][8][9][10][11]. Owing to the substantial reserves of potassium and sodium elements on earth, potassium-ion batteries (KIBs) and sodium-ion batteries (NIBs) have been widely studied in energy storage fields.…”

Section: Introductionmentioning

confidence: 99%

Tuning Metallic Co0.85Se Quantum Dots/Carbon Hollow Polyhedrons with Tertiary Hierarchical Structure for High-Performance Potassium Ion Batteries

Liu

Han

et al. 2019

Nano-Micro Lett.

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HIGHLIGHTS • Metallic cobalt selenide quantum dots encapsulated in mesoporous carbon matrix were prepared via a direct hydrothermal method. • The cobalt selenide/carbon composite (Co 0.85 Se-QDs/C) possesses tertiary hierarchical structure, which is the primary quantum dots, the secondary petals flake, and the tertiary hollow micropolyhedron framework. • Benefiting from this tertiary hierarchical structure, the Co 0.85 Se-QDs/C electrode as potassium-ion batteries anode shows an outstanding K-storage performance.

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“…The preparation of high-throughput, high specific surface area 3D frameworks from graphene and CNFs as efficient and stable potassium storage materials has attracted a lot of attention. 92,93 In addition, the 3D carbon frameworks doped with N, silica NPs, MoO 2 , or SnO 2 have been fabricated to further improve the performance of KIBs. [94][95][96] To improve the poor rate performance and low cycle life of KIBs caused by the large ionic radius of K + , Zhang and co-workers presented the decoration of hollow N-CNFs (N-HCNFs) with NiCo 2 S 4 nanorods for the synthesis of 3D nanomaterials for KIBs.…”

Section: Electrochemical Batteriesmentioning

confidence: 99%

Carbon nanofiber-based three-dimensional nanomaterials for energy and environmental applications

et al. 2020

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High-throughput fabrication of 3D N-doped graphenic framework coupled with Fe3C@porous graphite carbon for ultrastable potassium ion storage

Cited by 100 publications

References 51 publications

Liquid‐State Templates for Constructing B, N, Co‐Doping Porous Carbons with a Boosting of Potassium‐Ion Storage Performance

Liquid‐State Templates for Constructing B, N, Co‐Doping Porous Carbons with a Boosting of Potassium‐Ion Storage Performance

Tuning Metallic Co0.85Se Quantum Dots/Carbon Hollow Polyhedrons with Tertiary Hierarchical Structure for High-Performance Potassium Ion Batteries

Carbon nanofiber-based three-dimensional nanomaterials for energy and environmental applications

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