Iron Hexacyanoferrate Based Compound Modified LiMn<sub>2</sub>O<sub>4</sub>Cathodes for Lithium Ion Batteries

Chen, Cheng‐Lun; Chiu, Kuo-Feng; Leu, Hoang Jyh; Chen, Chen Chung

doi:10.1149/2.020305jes

Cited by 7 publications

(4 citation statements)

References 32 publications

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“…At a very high current density of 10 C, the rate capacity (i.e., the capacity retention compared with the capacity at a 0.2 C rate) of N-LFP is 42%, which is higher than that of LFP (27%). This indicates that NiHCF coating improves not only the capacity but also the rate capability of the electrode, because of the enhanced conductivity 17 . The overpotential (η) was discussed for LFP and N-LFP at various current rates revealed that the modified layer suppressed polarization, as calculated below.…”

Section: Resultsmentioning

confidence: 92%

“…They suggested that electrochemical active materials with redox potential near the cathode materials are prefered for such applications. In our previous research 17 , iron(III) hexacyanoferrate(II), known as Prussian blue (Fe 4 III [Fe II (CN) 6 ] 3 , PB), was adopted as an electrochemical active coating on LiMn 2 O 4 cathodes. The PB coating possessed electronic and ionic conductivity 17 , which then enhanced the high rate performances.…”

Section: Introductionmentioning

confidence: 99%

“…In our previous research 17 , iron(III) hexacyanoferrate(II), known as Prussian blue (Fe 4 III [Fe II (CN) 6 ] 3 , PB), was adopted as an electrochemical active coating on LiMn 2 O 4 cathodes. The PB coating possessed electronic and ionic conductivity 17 , which then enhanced the high rate performances. However, PB exhibits several redox potential versus Li/Li + at ~3.15 V and at ~3.89 V 17 , which is not preferred as suggested in reference 16 .…”

Section: Introductionmentioning

confidence: 99%

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Nickel Hexacyanoferrate-Modified LiFePO₄ Cathodes with High-Rate and High-Pulse Current Charge-Discharge Capabilities

Chiu

Leu

et al. 2016

ECS Trans.

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Nickel hexacyanoferrate (NiHCF) was synthesized by reverse micelle method and was coated on LiFePO4 cathodes to improve the high-rate and pulse-current charge-discharge performances. This NiHCF has a low-strain open framework structure and exhibits a redox potential similar to that of LiFePO4. The NiHCF-modified LiFePO4 cathodes show improved high-rate capability, with a 10 C discharge capacity that is 15% higher than that of pristine LiFePO4. The NiHCF-modified LiFePO4 can endure high-pulse current charge-discharge, which is well suited for green energy grids. The modified and pristine LiFePO4 cathodes were operated with alternate pulse currents of 0.01 C and 5 C introduced into a 0.2 C discharge/charge process to simulate the conditions of green grids. The modified LiFePO4 cathodes exhibited a capacity retention of 92% after 50 cycles, whereas the pristine sample showed a capacity retention of only 75%. These results can be attributed to the reduction of electrode/electrolyte interface resistances due to NiHCF coating, as demonstrated by electrochemical impedance spectroscopy.

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Section: Resultsmentioning

confidence: 92%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Nickel Hexacyanoferrate-Modified LiFePO₄ Cathodes with High-Rate and High-Pulse Current Charge-Discharge Capabilities

Chiu

Leu

et al. 2016

ECS Trans.

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“…/110) at 2θ of 38° and 2θ of 65° indicate well-defined layered structural characteristics for all samples(Chen et al, 2013, Luo et al, 2019. The results of the XRD data for all samples suggest that no impurity phase and additional peaks were formed after the synthesis process.…”

mentioning

confidence: 83%

A Comparative Study on The Electrochemical Properties of Hydrothermal and Solid-State Methods in The NCM Synthesis for Lithium Ion Battery Application

Pradanawati

Nursanto²,

Thufail³

et al. 2022

ASEAN J. Chem. Eng.

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In this article, we report and compare the synthesis method of the active cathode materials based on nickel‐cobalt‐manganese (NCM) for lithium-ion battery application. We evaluate the hydrothermal and solid-state reaction method in NCM-622 synthesis, the material characterizations, and the battery performance. Based on the analytical results using X-ray diffraction (XRD), particles synthesized using hydrothermal and solid-state methods exhibit a highly crystalline NCM phase. NCM particles synthesized using solid-state reaction exhibit high-rate performance up to 10 C. The electrochemical impedance spectroscopy analysis shows that the charge transfer resistance (Rct) of NCM synthesized by the solid-state reaction (SSR) method was 25.9% lower than hydrothermal. Meanwhile, the ionic diffusivity of the SSR sample was 38.5% higher than the hydrothermal sample. These two factors lead to better performance when tested in a lithium-ion battery.

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Metal‐Organic Frameworks: Electrochemical Properties

Jaouen

Morozan

2014

Encyclopedia of Inorganic and Bioinorganic Chemistry

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Metal–organic frameworks (MOFs) with their open pore network; high density of coordinatively unsaturated metal ions; and extremely broad tunability of their pore size, functional groups, and metal‐ion coordination chemistry possess many of the assets required for a successful use in electrochemistry. Recent years have witnessed increased research efforts in this direction, with the vast majority of the literature discussed herein being published in 2010 or later. MOFs have been investigated for their ionic conductivity (especially proton conductivity), electrocatalytic properties, charge‐storage properties for electrochemical supercapacitors, or as rechargeable intercalation or conversion‐reaction electrode for batteries. A proton conductivity up to 2 S m −1 has been reported for pure MOF systems (90% RH, 85 °C), up to 1 S m −1 for MOFs impregnated with nonvolatile acids (0% RH, 200 °C), whereas a MOF‐polymer mixed‐matrix membrane has shown a conductivity of 25 S m −1 (90% RH, 98 °C). In rechargeable batteries, MOF‐based negative electrodes have shown interesting initial capacities of 300 mAh g −1 (Li‐intercalation) and 560 mAh g −1 (conversion‐reaction mechanism). Positive electrodes based on Prussian blue (PB) analogs have shown a capacity up to 135 mAh g −1 (alkali‐metal‐cation insertion), with high capacity retention at fast charging rate. Hybrids combining the well‐known positive electrode materials and PB analogs thus offer new possibilities to design electrodes. MOFs have also been successfully used as precursors to synthesize high‐surface‐area carbons, metal, or metal oxide nanostructured materials tested in electrochemical supercapacitors or rechargeable batteries, as well as nonprecious metal catalysts for the oxygen reduction reaction. In this sacrificial approach, MOFs are pyrolyzed in various atmospheres and the resulting materials do not contain any trace of MOF but present morphologies reminiscent of the pristine MOF structure, or characteristics that are otherwise difficult to reach.

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Iron Hexacyanoferrate Based Compound Modified LiMn₂O₄Cathodes for Lithium Ion Batteries

Cited by 7 publications

References 32 publications

Nickel Hexacyanoferrate-Modified LiFePO₄ Cathodes with High-Rate and High-Pulse Current Charge-Discharge Capabilities

Nickel Hexacyanoferrate-Modified LiFePO₄ Cathodes with High-Rate and High-Pulse Current Charge-Discharge Capabilities

A Comparative Study on The Electrochemical Properties of Hydrothermal and Solid-State Methods in The NCM Synthesis for Lithium Ion Battery Application

Metal‐Organic Frameworks: Electrochemical Properties

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Iron Hexacyanoferrate Based Compound Modified LiMn2O4Cathodes for Lithium Ion Batteries

Cited by 7 publications

References 32 publications

Nickel Hexacyanoferrate-Modified LiFePO4 Cathodes with High-Rate and High-Pulse Current Charge-Discharge Capabilities

Nickel Hexacyanoferrate-Modified LiFePO4 Cathodes with High-Rate and High-Pulse Current Charge-Discharge Capabilities

A Comparative Study on The Electrochemical Properties of Hydrothermal and Solid-State Methods in The NCM Synthesis for Lithium Ion Battery Application

Metal‐Organic Frameworks: Electrochemical Properties

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Iron Hexacyanoferrate Based Compound Modified LiMn₂O₄Cathodes for Lithium Ion Batteries

Nickel Hexacyanoferrate-Modified LiFePO₄ Cathodes with High-Rate and High-Pulse Current Charge-Discharge Capabilities

Nickel Hexacyanoferrate-Modified LiFePO₄ Cathodes with High-Rate and High-Pulse Current Charge-Discharge Capabilities