Electrochemical intercalation of Ca2+ ions into TiS2 in organic electrolytes at room temperature

Lee, Changhee; Jeong, Yun-Taek; Nogales, Paul Maldonado; Song, Hee-Youb; Kim, Yang–Soo; Yin, Ri-Zhu; Jeong, Soon-Ki

doi:10.1016/j.elecom.2018.12.003

Cited by 36 publications

(16 citation statements)

References 28 publications

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“…Various materials groups have been proposed such as layered materials (i.e., TiS 2 16 , V 2 O 5 17 , α-MoO 3 18 ), Prussian blue analogues (i.e., MnFe(CN) 6 19 ) and transition metal oxides (i.e., Ca x Mn 2 O 4 20 ), which could exhibit the capability to store calcium ions and the promise for the use as cathode. Nevertheless, the cyclic performance of these proposed cathodes seldom exceeded 100 cycles, and few cathodes could deliver a reasonably high capacity at practically important current rates, incompatible with the advanced CIB anodes 16 – 20 . It is likely due to the relatively large ionic radius and divalent nature of Ca 2+ compared to monovalent ions (i.e., Li + and Na + ), which make the intercalation kinetics generally sluggish in diffusion channels of intercalation hosts.…”

Section: Introductionmentioning

confidence: 99%

A new high-voltage calcium intercalation host for ultra-stable and high-power calcium rechargeable batteries

Park

Wang

et al. 2021

Nat Commun

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Rechargeable calcium batteries have attracted increasing attention as promising multivalent ion battery systems due to the high abundance of calcium. However, the development has been hampered by the lack of suitable cathodes to accommodate the large and divalent Ca2+ ions at a high redox potential with sufficiently fast ionic conduction. Herein, we report a new intercalation host which presents 500 cycles with a capacity retention of 90% and a remarkable power capability at ~3.2 V (vs. Ca/Ca2+) in a calcium battery. The cathode material derived from Na0.5VPO4.8F0.7 is demonstrated to reversibly accommodate a large amount of Ca2+ ions, forming a series of CaxNa0.5VPO4.8F0.7 (0 < x < 0.5) phases without any noticeable structural degradation. The robust framework enables one of the smallest volume changes (1.4%) and the lowest diffusion barriers for Ca2+ among the cathodes reported to date, offering the basis for the outstanding cycle life and power capability.

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Section: Introductionmentioning

confidence: 99%

A new high-voltage calcium intercalation host for ultra-stable and high-power calcium rechargeable batteries

Park

Wang

et al. 2021

Nat Commun

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“…Some non-V 2 O 5 candidates have also been considered as anodes for CIBs; however, the performances are far from satisfactory. For instance, the cycling life of α-MoO 3 and TiS 2 anode materials was very poor (up to three cycles). , A CIB using Na 2 FePO 4 F and BP2000 carbon black as the cathode and anode, respectively, showed high stability for 50 cycles. However, the Coulombic efficiency was only 84% .…”

Section: Introductionmentioning

confidence: 99%

“…For instance, the cycling life of α-MoO 3 and TiS 2 anode materials was very poor (up to three cycles). 15,16 using Na 2 FePO 4 F and BP2000 carbon black as the cathode and anode, respectively, showed high stability for 50 cycles. However, the Coulombic efficiency was only 84%.…”

Section: ■ Introductionmentioning

confidence: 99%

Enabling High Performance Calcium-Ion Batteries from Prussian Blue and Metal–Organic Compound Materials

Hur

Kim

2020

ACS Sustainable Chem. Eng.

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Full cell calcium-ion batteries (CIBs) were fabricated from Prussian blue and metal–organic compound (MOC) materials and characterized. The anode materials were prepared via the simple precipitation of a nickel salt and various organic sodium salts (C6H6‑x‑y (COONa) x (NH2) y ). The OH vibration in FTIR results indicated the partial hydrolysis of Ni-based MOCs during the synthesis. Particularly, the addition of NH2 groups in the ligand increased the steric hindrance; thus, the partial hydrolysis of the Ni-based MOC was inhibited. When the anode material was a partially hydrolyzed MOC (Ni(OH)[C6H4(COOH)(COO)]), the full cell gave an initial discharging capacity of 82 mAh g–1 and a capacity retention of 62% at 0.1 A g–1 after 100 cycles, while the Coulombic efficiency was maintained at approximately 95.4%. The cell obtained from an NH2-functionalized MOC (Ni[C6H4(NH2)(COO)2]) delivered an initial discharging capacity of 86 mAh g–1 and a capacity retention of 77% at 0.1 A g–1 after 100 cycles, while the Coulombic efficiency was maintained at approximately 97%. The impedance tests suggested that Ni-based MOCs had typically low resistance, which is essential to achieve stable full cell CIBs.

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“…Their low reduction potential (−2.87 V vs standard hydrogen electrode (SHE)) renders them capable of delivering a higher voltage full-cell than those of magnesium-, zinc-, or aluminum-based batteries. ,− The low effective charge density of calcium, due to its large ion, can lead to swift diffusion in the host material. , Moreover, calcium is the fifth most abundant element in the Earth’s crust; it is cost-effective. Despite these advantages, only a few cathode materials have been reported to be effective for CIBs including CaCo 2 O 4 , Ca x MoO 3 , NaFePO 4 F, TiS 2 , α-MoO 3 , Prussian-blue analogues, Mg 0.25 V 2 O 5 ·H 2 O, VOPO 4 ·2H 2 O, Ca 0.13 MoO 3 ·(H 2 O) 0.41 , FePO 4 , NaV 2 (PO 4 ) 3 , , and α-V 2 O 5 …”

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confidence: 99%

Crystal-Water-Free Potassium Vanadium Bronze (K_0.5V₂O₅) as a Cathode Material for Ca-Ion Batteries

Purbarani

Hyoung

Hong

2021

ACS Appl. Energy Mater.

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The research to discover a suitable cathode material for calcium-ion batteries (CIBs) remains challenging, despite their potential advantages of high energy density and cost-effectiveness. Herein, we report K0.5V2O5 as a cathode material for CIBs. During the initial charging of the electrode, potassium ions were replaced with 0.12 Ca. The calcium-exchanged electrode exhibited a reversible discharge capacity of ∼100 mAh g–1 at 0.1 C rate at room temperature with an average voltage of ∼3.0 V (vs Ca/Ca2+). The reversible capacity is higher than any reported cathode materials without crystal water, demonstrating the feasibility of further development of high-capacity crystal-water-free CIB cathode materials.

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Electrochemical intercalation of Ca2+ ions into TiS2 in organic electrolytes at room temperature

Cited by 36 publications

References 28 publications

A new high-voltage calcium intercalation host for ultra-stable and high-power calcium rechargeable batteries

A new high-voltage calcium intercalation host for ultra-stable and high-power calcium rechargeable batteries

Enabling High Performance Calcium-Ion Batteries from Prussian Blue and Metal–Organic Compound Materials

Crystal-Water-Free Potassium Vanadium Bronze (K_0.5V₂O₅) as a Cathode Material for Ca-Ion Batteries

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Electrochemical intercalation of Ca2+ ions into TiS2 in organic electrolytes at room temperature

Cited by 36 publications

References 28 publications

A new high-voltage calcium intercalation host for ultra-stable and high-power calcium rechargeable batteries

A new high-voltage calcium intercalation host for ultra-stable and high-power calcium rechargeable batteries

Enabling High Performance Calcium-Ion Batteries from Prussian Blue and Metal–Organic Compound Materials

Crystal-Water-Free Potassium Vanadium Bronze (K0.5V2O5) as a Cathode Material for Ca-Ion Batteries

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Product

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Crystal-Water-Free Potassium Vanadium Bronze (K_0.5V₂O₅) as a Cathode Material for Ca-Ion Batteries