MXene enabled binder-free FeOF cathode with high volumetric and gravimetric capacities for flexible lithium ion batteries

Zhai, Jingru; Lei, Zhengyu; Sun, Kening; Zhu, Shengcai

doi:10.1016/j.electacta.2022.140595

Cited by 13 publications

(11 citation statements)

References 48 publications

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“…Various recent studies have reported the application of conductive matrix materials in FeF x cathodes. Wherein, carbon‐based FeF x composites have been the preferred method to optimize the electrochemical properties of FeF x cathodes [87,88] . Carbon materials have tunable structures and excellent mechanical stability, providing sufficient active sites and promoting interfacial ion diffusion.…”

Section: Strategies Of Improved Fefx Performancementioning

confidence: 99%

“…Wherein, carbonbased FeF x composites have been the preferred method to optimize the electrochemical properties of FeF x cathodes. [87,88] Carbon materials have tunable structures and excellent mechanical stability, providing sufficient active sites and promoting interfacial ion diffusion. It plays a crucial role in the electron/ion transport and structural stability of FeF x cathodes.…”

Section: Conductive Matrixmentioning

confidence: 99%

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Toward High Energy Density FeF_x (x=2 and 3) Cathodes for Lithium‐Ion Batteries

et al. 2023

Batteries & Supercaps

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It has been challenging to develop next‐generation higher energy density cathode materials to satisfy the incremental demand for lightweight and miniaturization for lithium‐ion batteries (LIBs). The iron‐based fluoride (FeFx) cathodes may be highly competitive due to abundant resources as well as high theoretical capacity. However, the complex multiphase conversion reactions of the FeFx cathodes cause limited battery performance hindering its commercialization. Herein, this review focuses on the multi‐electron conversion processes involved in solid‐solid reactions. More importantly, the scientific strategies of enhanced FeFx performance are mainly addressed in view of four critical aspects, i. e., conductive matrix, heteroatom doping, surface modification, and electrolyte engineering. It is demonstrated that the optimized strategies can mitigate the challenges of the FeFx cathodes during multi‐electron conversion processes. It is believed that this review has been a guidance for improving the cycling performance of the FeFx cathodes for high energy density LIBs.

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Section: Strategies Of Improved Fefx Performancementioning

confidence: 99%

Section: Conductive Matrixmentioning

confidence: 99%

Toward High Energy Density FeF_x (x=2 and 3) Cathodes for Lithium‐Ion Batteries

et al. 2023

Batteries & Supercaps

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“…Typically, liquid-phase synthesis, including chemical precipitation, [60] hydrothermal, [61] solvothermal, [62,63] sol-gel, [64] and thermal decomposition methods [65] based on different fluorine sources, (hydrogen fluoride (HF) solution, [66] NH 4 F, [67] NH 4 HF 2 , [68,69] metal hexafluorosilicate, [70] F-containing ionic liquids (ILs), [71] etc.) has been utilized to prepare nanoparticle MFs, [72] metal oxyfluorides, [73] mixed metal difluorides, [74] and MF-carbon composites.…”

Section: Liquid-phase Synthesismentioning

confidence: 99%

Metal Fluoride Cathode Materials for Lithium Rechargeable Batteries: Focus on Iron Fluorides

2022

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The continued development of modern society is facing the rapid transformation of energy sources from polluting fossil fuels to clean and sustainable energy. Among the available energy storage equipment, lithium-ion (LIBs)/lithium metal batteries (LMBs) have the features of high energy/ power density, long life, and environmental friendliness and have attracted significant academic and industrial attention. Since the successful commercialization of LIBs in the 1990s, the energy density of batteries has been significantly improved. [1] Currently, energy densities of 260-295 Wh kg −1 and 650-730 Wh L −1 have been achieved for 3C (Computer, Communication, and Consumer Electronics) devices. [2,3] Commercial LIBs based on intercalation/insertion-type

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“…The different FeOF materials developed so far are summarized in Table S1 (Supporting Information). Clearly, most of these materials [12][13][14][15][16][17][18][19][20][21] can deliver only quite low specific capacities, e.g., 400 mAh•g −1 , (less than 2-electron process) at a very low rate (e.g., ≤ 0.1C) with few cycles (e.g., ≤ 100 cycles). At extremely low rates (e.g., 0.01C), few materials [12,14] can deliver 560 mAh g −1 with tens of cycles (Table S1, Supporting Information).…”

Section: Introductionmentioning

confidence: 99%

Reversible Iron Oxyfluoride (FeOF)‐Graphene Composites as Sustainable Cathodes for High Energy Density Lithium Batteries

Liu

Yang

et al. 2023

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Two large barriers are impeding the wide implementation of electric vehicles, namely driving‐range and cost, primarily due to the low specific energy and high cost of mono‐valence cathodes used in lithium‐ion batteries. Iron is the ideal element for cathode materials considering its abundance, low cost and toxicity. However, the poor reversibility of (de)lithiation and low electronic conductivity prevent iron‐based high specific energy multi‐valence conversion cathodes from practical applications. In this work, a sustainable FeOF nanocomposite is developed with extraordinary performance. The specific capacity and energy reach 621 mAh g−1 and 1124 Wh kg−1 with more than 100 cycles, which triples the specific capacity, and doubles the specific energy of current mono‐valence intercalation LiCoO2. This is the result of an effective approach, combing the nanostructured FeOF with graphene, realized by making the (de)lithiation reversible by immobilizing FeOF nanoparticles and the discharge products over the graphene surface and providing the interparticle electric conduction. Importantly, it demonstrates that introducing small amount of graphene can create new materials with desired properties, opening a new avenue for altering the (de)lithiation process. Such extraordinary performance represents a significant breakthrough in developing sustainable conversion materials, eventually overcoming the driving range and cost barriers.

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MXene enabled binder-free FeOF cathode with high volumetric and gravimetric capacities for flexible lithium ion batteries

Cited by 13 publications

References 48 publications

Toward High Energy Density FeF_x (x=2 and 3) Cathodes for Lithium‐Ion Batteries

Toward High Energy Density FeF_x (x=2 and 3) Cathodes for Lithium‐Ion Batteries

Metal Fluoride Cathode Materials for Lithium Rechargeable Batteries: Focus on Iron Fluorides

Reversible Iron Oxyfluoride (FeOF)‐Graphene Composites as Sustainable Cathodes for High Energy Density Lithium Batteries

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MXene enabled binder-free FeOF cathode with high volumetric and gravimetric capacities for flexible lithium ion batteries

Cited by 13 publications

References 48 publications

Toward High Energy Density FeFx (x=2 and 3) Cathodes for Lithium‐Ion Batteries

Toward High Energy Density FeFx (x=2 and 3) Cathodes for Lithium‐Ion Batteries

Metal Fluoride Cathode Materials for Lithium Rechargeable Batteries: Focus on Iron Fluorides

Reversible Iron Oxyfluoride (FeOF)‐Graphene Composites as Sustainable Cathodes for High Energy Density Lithium Batteries

Contact Info

Product

Resources

About

Toward High Energy Density FeF_x (x=2 and 3) Cathodes for Lithium‐Ion Batteries

Toward High Energy Density FeF_x (x=2 and 3) Cathodes for Lithium‐Ion Batteries