SnP0.94 nanoplates/graphene oxide composite for novel potassium-ion battery anode

Zhao, Xixia; Wang, Wenhui; Hou, Zhen; Wei, Guijuan; Yu, Yikang; Zhang, Jun; Quan, Zewei

doi:10.1016/j.cej.2019.03.250

Cited by 79 publications

(34 citation statements)

References 44 publications

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“…Amongst a wide suite of employed anode materials for KIBs, including carbonaceous materials, metal oxides, transitional metal dichalcogenides, and metal phosphides, phosphide‐based species have garnered a growing research interest because of their high theoretical capacity, cost‐effectiveness, and favorable ion/electron conductivity . However, these materials, in particular transition metal phosphides (TMPs), normally experience severe agglomeration and large volume expansion during potassiation process, giving rise to fast capacity decay upon long‐life cycling.…”

Section: Introductionmentioning

confidence: 99%

ZIF‐8@ZIF‐67‐Derived Nitrogen‐Doped Porous Carbon Confined CoP Polyhedron Targeting Superior Potassium‐Ion Storage

Zhao

Zeng

et al. 2020

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Potassium ion batteries (KIB) have become a compelling energy‐storage system owing to their cost effectiveness and the high abundance of potassium in comparison with lithium. However, its practical applications have been thwarted by a series of challenges, including marked volume expansion and sluggish reaction kinetics caused by the large radius of potassium ions. In line with this, the exploration of reliable anode materials affording high electrical conductivity, sufficient active sites, and structural robustness is the key. The synthesis of ZIF‐8@ZIF‐67 derived nitrogen‐doped porous carbon confined CoP polyhedron architectures (NC@CoP/NC) to function as innovative KIB anode materials is reported. Such composites enable an outstanding rate performance to harvest a capacity of ≈200 mAh g−1 at 2000 mA g−1. Additionally, a high cycling stability can be gained by maintaining a high capacity retention of 93% after 100 cycles at 100 mA g−1. Furthermore, the potassium ion storage mechanism of the NC@CoP/NC anode is systematically probed through theoretical simulations and experimental characterization. This contribution may offer an innovative and feasible route of emerging anode design toward high performance KIBs.

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Section: Introductionmentioning

confidence: 99%

ZIF‐8@ZIF‐67‐Derived Nitrogen‐Doped Porous Carbon Confined CoP Polyhedron Targeting Superior Potassium‐Ion Storage

Zhao

Zeng

et al. 2020

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“…For example, Sn 4 P 3 has been synthesized by the ball‐milling method and showed a high initial capacity, but it underwent a fast capacity fading within 40 cycles . SnP 0.94 nanoplates/graphene oxide composite material shows a lower initial capacity of 294 mAh g −1 at 25 mA g −1 and an unsatisfactory cycle performance . In situ transmission electron microscope (TEM) electrochemical testing reveals the KSn alloy forms (197 mAh g −1 ) with 180% volume variation.…”

Section: Introductionmentioning

confidence: 99%

Advanced Se₃P₄@C Anode with Exceptional Cycling Life for High Performance Potassium‐Ion Batteries

Zhao

et al. 2020

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Potassium‐ion batteries have attracted increasing attention for next‐generation energy storage systems due to their high energy density and abundance of potassium. However, the lack of suitable anode highly hampers its practical application due to the large ionic radius of K+. Herein, a Se3P4@mesoporous carbon (Se3P4@C) composite is reported as a high‐performance anode for potassium‐ion batteries. The Se3P4@C composite is synthesized through an in situ combination reaction between red phosphorus and Se within a porous carbon matrix. In this way, the nano‐sized Se3P4 is well confined in the porous carbon and thus exhibits a close contact with the carbon matrix. This can significantly improve the conductivity and alleviate the volume change during the cycling process. As a result, the Se3P4@C exhibits a high reversible initial capacity of 1036.8 mAh g−1 at a current density of 50 mA g−1 as well as an excellent cycle performance with a capacity decay of 0.07% per cycle over 300 cycles under 1000 mA g−1. In terms of high specific capacity and stable cycling performance, the Se3P4@C anode is a promising candidate for advanced potassium‐ion batteries.

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“…synthesized SnP 0.94 nanoplate/GO composite through a facile hot‐injection method (Figure 6 f). [58] The composite releases a high capacity of 245, 190, and 162 mAh g −1 at current densities of 25, 50, and 100 mA g −1 (Figure 6 g), respectively. These excellent electrochemical properties are attributed to the advantages of GO thin plate to buffer volume changes, accelerate charge transfer, and reduce the contact between SnP 0.94 and electrolyte.…”

Section: Anode Materialsmentioning

confidence: 96%

Post‐Lithium‐Ion Battery Era: Recent Advances in Rechargeable Potassium‐Ion Batteries

Wang

Ang

Yang

et al. 2020

Chemistry A European J

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Lithium shortage and the growing demand for electricity storage has encouraged researchers to look for new alternative energy‐storage materials. Due to abundant potassium resources, similar redox potential to lithium metal, and low cost, potassium‐ion batteries (PIBs), as one of the promising alternatives, have been applied in energy‐storage research recently. However, PIBs do not have adequate competition in their electrochemical efficiency because the molar volume of potassium ions is higher than those in lithium and sodium ions. Therefore, for better application and development of PIBs, finding suitable anode and cathode materials is currently the most important task. The latest developments in electrode materials for PIBs have been outlined in depth in this review. It focuses on the structural design and synthetic methods for novel electrode materials, ingenious optimization and tuning strategies, and explains the intrinsic reaction mechanism. The effects of organic electrolytes and aqueous electrolytes on battery systems are compared and clarified. Finally, theoretical and viable insights are given to the challenges posed by the creation and practical application of PIBs in the future.

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SnP0.94 nanoplates/graphene oxide composite for novel potassium-ion battery anode

Cited by 79 publications

References 44 publications

ZIF‐8@ZIF‐67‐Derived Nitrogen‐Doped Porous Carbon Confined CoP Polyhedron Targeting Superior Potassium‐Ion Storage

ZIF‐8@ZIF‐67‐Derived Nitrogen‐Doped Porous Carbon Confined CoP Polyhedron Targeting Superior Potassium‐Ion Storage

Advanced Se₃P₄@C Anode with Exceptional Cycling Life for High Performance Potassium‐Ion Batteries

Post‐Lithium‐Ion Battery Era: Recent Advances in Rechargeable Potassium‐Ion Batteries

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SnP0.94 nanoplates/graphene oxide composite for novel potassium-ion battery anode

Cited by 79 publications

References 44 publications

ZIF‐8@ZIF‐67‐Derived Nitrogen‐Doped Porous Carbon Confined CoP Polyhedron Targeting Superior Potassium‐Ion Storage

ZIF‐8@ZIF‐67‐Derived Nitrogen‐Doped Porous Carbon Confined CoP Polyhedron Targeting Superior Potassium‐Ion Storage

Advanced Se3P4@C Anode with Exceptional Cycling Life for High Performance Potassium‐Ion Batteries

Post‐Lithium‐Ion Battery Era: Recent Advances in Rechargeable Potassium‐Ion Batteries

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Advanced Se₃P₄@C Anode with Exceptional Cycling Life for High Performance Potassium‐Ion Batteries