Metal-organic framework-derived Co0.85Se nanoparticles in N-doped carbon as a high-rate and long-lifespan anode material for potassium ion batteries

Ma, Guangyao; Liu, Chengjun; Liu, Fan; Majeed, Muhammad K.; Feng, Zhenyu; Cui, Yanhua; Yang, Jian; Qian, Yitai

doi:10.1016/j.mtener.2018.09.013

Cited by 112 publications

(53 citation statements)

References 51 publications

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“…The peaks emerging from 0.90 to 0.41 V in the first cathodic scan correspond to the insertion of K + ions into the Co-Fe selenides to form the K x (Co 0.5 Fe 0.5 ) y Se z product and SEI layers, followed by the formation of metallic Co and Fe nanoparticles as well as K 2 Se. [39][40][41] These results are in good agreement with the ex situ analysis data. Furthermore, the strong reversible peak at approximately 0.01 V can be attributed to the K + storage in the carbon.…”

Section: Resultssupporting

confidence: 89%

Conversion Reaction Mechanism of Ultrafine Bimetallic Co‐Fe Selenides Embedded in Hollow Mesoporous Carbon Nanospheres and Their Excellent K‐Ion Storage Performance

Yang

Kang

Park

et al. 2020

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Potassium‐ion batteries (KIBs) are considered as promising alternatives to lithium‐ion batteries owing to the abundance and affordability of potassium. However, the development of suitable electrode materials that can stably store large‐sized K ions remains a challenge. This study proposes a facile impregnation method for synthesizing ultrafine cobalt–iron bimetallic selenides embedded in hollow mesoporous carbon nanospheres (HMCSs) as superior anodes for KIBs. This involves loading metal precursors into HMCS templates using a repeated “drop and drying” process followed by selenization at various temperatures, facilitating not only the preparation of bimetallic selenide/carbon composites but also controlling their structures. HMCSs serve as structural skeletons, conductive templates, and vehicles to restrain the overgrowth of bimetallic selenide particles during thermal treatment. Various analysis strategies are employed to investigate the charge–discharge mechanism of the new bimetallic selenide anodes. This unique‐structured composite exhibits a high discharge capacity (485 mA h g−1 at 0.1 A g−1 after 200 cycles) and enhanced rate capability (272 mA h g−1 at 2.0 A g−1) as a promising anode material for KIBs. Furthermore, the electrochemical properties of various nanostructures, from hollow to frog egg‐like structures, obtained by adjusting the selenization temperature, are compared.

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Section: Resultssupporting

confidence: 89%

Conversion Reaction Mechanism of Ultrafine Bimetallic Co‐Fe Selenides Embedded in Hollow Mesoporous Carbon Nanospheres and Their Excellent K‐Ion Storage Performance

Yang

Kang

Park

et al. 2020

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“…Therefore, as presented in the Ragone plot (Figure S15, Supporting Information), the CoSeS@C/G has overwhelming higher rate capability than other reported cobalt selenide‐base anodes for LIB. [ 9,11,35,53–55 ]…”

Section: Resultsmentioning

confidence: 99%

“…Cobalt selenides, as to their larger deintercalation interstitial distance and weaker ion bonds of CoSe compared with the cobalt oxides/sulfides, have been deemed as one of the most promising candidate for utilization in alkali‐ion batteries. [ 7–9 ] However, during the insertion/extraction process of alkali ion, cobalt selenides present the deficient diffusion kinetics and mediocre capacity, which is derived from the unacceptable electronic/ionic conductivity, resulting in the unsatisfactory electrochemical performance. [ 10 ] It is confirmed that tailoring chemical composition through doping into the crystal lattice, is an efficient approach to enhance the intrinsic conductivity of the target material by adjusting its electronic structure in wide ranges.…”

Section: Introductionmentioning

confidence: 99%

Composition and Architecture Design of Double‐Shelled Co_0.85Se₁₋_xS_x@Carbon/Graphene Hollow Polyhedron with Superior Alkali (Li, Na, K)‐Ion Storage

Wang

Bao

Xia

et al. 2020

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The ORCID identification number(s) for the author(s) of this article can be found under https://doi.org/10.1002/smll.201905853.The exploration of materials with reversible and stable electrochemical performance is crucial in energy storage, which can (de) intercalate all the alkali-metal ions (Li + , Na + , and K + ). Although transition-metal chalcogenides are investigated continually, the design and controllable preparation of hierarchical nanostructure and subtle composite withstable properties are still great challenges. Herein, component-optimal Co 0.85 Se 1−x S x nanoparticles are fabricated by in situ sulfidization of metal organic framework, which are wrapped by the S-doped graphene, constructing a hollow polyhedron framework with double carbon shells (CoSSe@C/G). Benefiting from the synergistic effect of composition regulation and architecture design by S-substitution, the electrochemical kinetic is enhanced by the boosted electrochemistry-active sites, and the volume variation is mitigated by the designed structure, resulting in the advanced alkali-ion storage performance. Thus, it delivers an outstanding reversible capacity of 636.2 mAh g −1 at 2 A g −1 after 1400 cycles for Li-ion batteries. Remarkably, satisfactory initial charge capacities of 548.1 and 532.9 mAh g −1 at 0.1 A g −1 can be obtained for Na-ion and K-ion batteries, respectively. The prominent performance combined with the theory calculation confirms that the synergistic strategy can improve the alkali-ion transportation and structure stability, providing an instructive guide for designing high-performance anode materials for universal alkali-ion storage.

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“…The peak 1 can be caused by the intercalation of K ion to ZnSe. Subsequently, the peak 1 shifts to ≈0.63 V, which can be attributed to the conversion reaction with Se translating into K 2 Se after the first cycle . The peak 2 vanishes in the subsequent cycles, which can be attributed to some irreversible reactions and the formation of solid‐electrolyte interphase (SEI) film .…”

Section: Resultsmentioning

confidence: 99%

Highly Dispersed ZnSe Nanoparticles Embedded in N‐Doped Porous Carbon Matrix as an Anode for Potassium Ion Batteries

et al. 2019

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Advanced nanostructured functional materials obtained from the precursors of metal–organic frameworks show several unique advantages, including plentiful porous structures and large specific surface areas. Based on this, designed and constructed are highly dispersed ZnSe nanoparticles anchored in a N‐doped porous carbon rhombic dodecahedron (ZnSe@NDPC) by a sequential high‐temperature pyrolysis and selenization method. The specific synthesis process involves a two‐step heat treatment of the template‐engaged reaction between zinc‐based zeolitic imidazolate framework (ZIF‐8) and selenium power. By optimizing the calcination temperature, the as‐synthesized ZnSe@NDPC‐700 as an advanced anode of potassium ion batteries demonstrates the best electrochemical performance, including a high capacity (262.8 mA h g−1 over 200 cycles at 100 mA g−1) and a good rate capability (109.4 mA h g−1 at 2000 mA g−1 and 52.8 mA h g−1 at 5000 mA g−1). Moreover, the capacitance and diffusion mechanisms are also investigated by the qualitative and quantitate analysis, finally accounting for the superior K storage.

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Metal-organic framework-derived Co0.85Se nanoparticles in N-doped carbon as a high-rate and long-lifespan anode material for potassium ion batteries

Cited by 112 publications

References 51 publications

Conversion Reaction Mechanism of Ultrafine Bimetallic Co‐Fe Selenides Embedded in Hollow Mesoporous Carbon Nanospheres and Their Excellent K‐Ion Storage Performance

Conversion Reaction Mechanism of Ultrafine Bimetallic Co‐Fe Selenides Embedded in Hollow Mesoporous Carbon Nanospheres and Their Excellent K‐Ion Storage Performance

Composition and Architecture Design of Double‐Shelled Co_0.85Se₁₋_xS_x@Carbon/Graphene Hollow Polyhedron with Superior Alkali (Li, Na, K)‐Ion Storage

Highly Dispersed ZnSe Nanoparticles Embedded in N‐Doped Porous Carbon Matrix as an Anode for Potassium Ion Batteries

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Metal-organic framework-derived Co0.85Se nanoparticles in N-doped carbon as a high-rate and long-lifespan anode material for potassium ion batteries

Cited by 112 publications

References 51 publications

Conversion Reaction Mechanism of Ultrafine Bimetallic Co‐Fe Selenides Embedded in Hollow Mesoporous Carbon Nanospheres and Their Excellent K‐Ion Storage Performance

Conversion Reaction Mechanism of Ultrafine Bimetallic Co‐Fe Selenides Embedded in Hollow Mesoporous Carbon Nanospheres and Their Excellent K‐Ion Storage Performance

Composition and Architecture Design of Double‐Shelled Co0.85Se1−xSx@Carbon/Graphene Hollow Polyhedron with Superior Alkali (Li, Na, K)‐Ion Storage

Highly Dispersed ZnSe Nanoparticles Embedded in N‐Doped Porous Carbon Matrix as an Anode for Potassium Ion Batteries

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Composition and Architecture Design of Double‐Shelled Co_0.85Se₁₋_xS_x@Carbon/Graphene Hollow Polyhedron with Superior Alkali (Li, Na, K)‐Ion Storage