Aqueous K-ion battery incorporating environment-friendly organic compound and Berlin green

Wang, Mingtan; Wang, Huaiqing; Zhang, Huamin; Li, Xianfeng

doi:10.1016/j.jechem.2019.12.019

Cited by 64 publications

(37 citation statements)

References 31 publications

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“…Among the MHCFs, the Berlin green (FeFe(CN) 6 • nH 2 O, FeHCF) with two active redox sites, low elements cost, and high stability in aqueous solution could be a more competitive cathode material for aqueous batteries application. Wang et al [12] used Berlin green as the cathode material in the aqueous K-ion battery, reaching a capacity retention rate of 74 % in 300 cycles at 2 C. Many advances of FeHCF cathode materials in the aqueous-based Na-and K-ion batteries have also been reported. [13] The (de)intercalation of alkaline cations, like Na + , and K + , is more feasible with fast kinetics and good stability than that of Zn 2 + .…”

Section: Introductionmentioning

confidence: 99%

High‐Performance Aqueous Rechargeable K/Zn Hybrid Batteries Based on Berlin Green Cathode Materials

Zhao

Zou

et al. 2022

ChemElectroChem

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Aqueous rechargeable zinc-based batteries with the advantages of sustainability, safety, and low cost, are suitable for large-scale electrochemical energy storage applications. In this work, aqueous zinc-based batteries with low defect Berlin green (FeHCF) cathode, a hybrid zinc triflate and potassium triflate electrolyte, and zinc anodes are developed. In the hybrid electrolyte, the K + ions with the weak solvation effect and small electrostatic interaction are the dominant intercalation species in the FeHCF, resulting in the fast charge transfer process and rapid diffusion kinetics. The Zn 2 + ions stay at the surface rather than penetrate into the bulk phase. Thus, the hybrid batteries deliver a high specific capacity of 169.2 mAh g À 1 at 100 mA g À 1 , excellent rate performance with 45.7 mAh g À 1 at 6 A g À 1 , and good long-term cyclability with a capacity retention of 57 % over 1000 cycles at 1 A g À 1 . The results suggest using aqueous K/Zn hybrid electrolytes can improve the electrochemical performance of FeHCF.

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Section: Introductionmentioning

confidence: 99%

High‐Performance Aqueous Rechargeable K/Zn Hybrid Batteries Based on Berlin Green Cathode Materials

Zhao

Zou

et al. 2022

ChemElectroChem

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“…[ 7,10,11 ] K seems to be of particular interest as it has properties similar to those of lithium. [ 12–15 ] While it has a reduction potential lower than that of lithium in alkylcarbonate, [ 16 ] calculated by Marcus, graphite has been shown to insert this element with good capacity retention and a gravimetric capacity of 250 mA h g −1 , unlike the insertion of Na, [ 16–18 ] which is a less polarizable cation than K + and larger than Li + . Na + combines the two disadvantages (the wrong size and the wrong electronic density).…”

Section: Introductionmentioning

confidence: 99%

Could K⁺‐Based Electrolytes Be the Reliable Environmental‐Friendly Alternative to Li⁺ in Gr//LMO Battery We Searched for?

et al. 2020

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Manganese oxide LiMn2O4 (LMO) is one of the most promising cathode materials because it benefits from the low cost and availability of manganese, a high electrochemical stability, and a neutral environmental impact. In the same vein, the full or partial replacement of lithium salt in electrolyte by a more available and less expensive potassium salt contributes to reducing the environmental impact of batteries. Herein, the impact of the partial or total replacement of LiPF6 by KPF6 in a binary mixture of alkyl carbonate (EC/EMC) for LMO/graphite full battery is reported. The physicochemical properties of the electrolyte and its consequence on the kinetic and thermodynamic intercalation controls of each cation on cyclability are explored. Without protection with an additive, at a high current density (1 C), the nonselective intercalation of the two cations induces an optimum observed with an equimolar salt composition (0.5 m LiPF6 + 0.5 m KPF6), whereas in the presence of 5% of fluoroethylene (FEC), the replacement of part of the lithium is achievable without significant loss of performance. However, LMO/Gr cycling seems to depend on the discharge current density.

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“…37 As shown in Fig. 1c, organic aromatic molecules with diverse number of aromatic rings and carbonyl groups (DPPZ, 38 β-PTCDA, 38 PNTCDA, 39 PT 32 ), inorganic and composite materials (KTi 2 (PO 4 ) 3 , 40 KPB@PPy 41 ) were compared. Clearly, PTCDI (3,4,9,10-Perylenetetracarboxylic diimide) displays the lowest redox potential and highest speci c capacity, thus holding a great promise as anode in the aqueous KCl electrolyte.…”

Section: Resultsmentioning

confidence: 99%

“…2d). Impressively, the voltage plateau of the PTCDI//I 2 full cell is of considerable superiority to that of all reported aqueous rechargeable Zn//I 2 , 3,5,6,[18][19][20][21]47 Fe//I 2 16 , Al//I 2 , 17 H 2 //I 2 , 48 and most aqueous rechargeable K + full battery systems (ARKFBs), [38][39][40][41][42] making it a promising prospect for high-energy output (Fig. 2e).…”

Section: Resultsmentioning

confidence: 99%

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Aqueous organic anode//iodine cascadable battery with ultra-long lifespan, high energy and power density

Zhang

Zhu

Wang

et al. 2022

Preprint

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Metal//iodine (I2) batteries have sparked enormous interest as particularly promising energy storage devices. Still, the inherent dendrite growth and electrochemically inactive complexes formed with iodine anionic species at their metal anode make it challenging to substantially improve their performance. Herein, we report the first orgainc anode//I2 battery. The battery delivers ultra-long lifespan (92000 cycles at 40 A g− 1), high rate tolerance (104 mAh g− 1 at 160 A g− 1), energy density (434 Wh kg− 1 at 50420 W kg− 1) and power density (155072 W kg− 1 at 86 Wh kg− 1), far exceeding all the reported aqueous I2-batteries. Moreover, the cascade form of this battery enables a voltage of 2.5 V without employing highly concentrated salts or polymer additives. This work addresses the major challenge of I2-batteries and enriches the family of aqueous halogen-batteries with high performance and unlimited possibilities, and provides a new sight for the construction of high-performance battery systems based on sulfur electrodes.

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Aqueous K-ion battery incorporating environment-friendly organic compound and Berlin green

Cited by 64 publications

References 31 publications

High‐Performance Aqueous Rechargeable K/Zn Hybrid Batteries Based on Berlin Green Cathode Materials

High‐Performance Aqueous Rechargeable K/Zn Hybrid Batteries Based on Berlin Green Cathode Materials

Could K⁺‐Based Electrolytes Be the Reliable Environmental‐Friendly Alternative to Li⁺ in Gr//LMO Battery We Searched for?

Aqueous organic anode//iodine cascadable battery with ultra-long lifespan, high energy and power density

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Aqueous K-ion battery incorporating environment-friendly organic compound and Berlin green

Cited by 64 publications

References 31 publications

High‐Performance Aqueous Rechargeable K/Zn Hybrid Batteries Based on Berlin Green Cathode Materials

High‐Performance Aqueous Rechargeable K/Zn Hybrid Batteries Based on Berlin Green Cathode Materials

Could K+‐Based Electrolytes Be the Reliable Environmental‐Friendly Alternative to Li+ in Gr//LMO Battery We Searched for?

Aqueous organic anode//iodine cascadable battery with ultra-long lifespan, high energy and power density

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Could K⁺‐Based Electrolytes Be the Reliable Environmental‐Friendly Alternative to Li⁺ in Gr//LMO Battery We Searched for?