Unlocking the side reaction mechanism of phosphorus anode with binder and the development of a multifunctional binder for enhancing the performance

Xu, Liang; Wang, Xiaoyi; Li, Gang; Xiang, Qianxin; Zhou, Chaoyi; Chen, Aibing; Li, Xu; Zhang, Shaojie; Cao, Yuliang; Han, Muyao; Han, Chong; Gong, Haochen; Wang, Huili; Zhang, Yiming; Sun, Jie

doi:10.1016/j.jpowsour.2022.231686

Cited by 13 publications

(4 citation statements)

References 57 publications

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“…To validate the excellent dynamic characteristics of P/Fe‐N‐C materials, cyclic voltammetry (CV) was conducted at various sweep speeds, revealing a higher proportion of non‐diffusion control processes for P/Fe‐N‐C at faster sweep speeds (Figure S7a, Supporting Information). [ 36 ] Further analysis using constant‐current intermittent titration (GITT) reveals that the Na+ diffusion coefficient of P/Fe‐N‐C electrodes during cycling reaches as high as 10 −14 cm 2 s −1 (Figure S7b), [ 37 ] and the impedance of P/Fe‐N‐C is lower after discharge (Figure S7c, Supporting Information). These results confirm that the solid electrolyte interface (SEI) formed on P/Fe‐N‐C possesses excellent ion transport characteristics, effectively supporting its exceptional rate performance.…”

Section: Resultsmentioning

confidence: 99%

Electrocatalysis of Fe‐N‐C Bonds Driving Reliable Interphase and Fast Kinetics for Phosphorus Anode in Sodium‐Ion Batteries

Wan

et al. 2023

Adv Funct Materials

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Phosphorus exhibits high capacity and low redox potential, making it a promising anode material for future sodium‐ion batteries. However, its practical applications are confined by poor durability and sluggish kinetics. Herein, an innovative in‐situ electrochemically self‐driven strategy is presented to embed phosphorus nanocrystal (≈10 nm) into a Fe‐N‐C‐rich 3D carbon framework (P/Fe‐N‐C). This strategy enables rapid and high‐capacity sodium ion storage. Through a combination of experimental assistance and theoretical calculations, a novel synergistic catalytic mechanism of Fe‐N‐C is reasonably proposed. In detail, the electrochemical formation of Fe‐N‐C catalytic sites facilitates the release of fluorine in ester‐based electrolyte, inducing Na+‐conducting‐enhanced solid‐electrolyte interphase. Furthermore, it also effectively induces the dissociation energy of the P‐P bond and promotes the reaction kinetics of P anode. As a result, the unconventional P/Fe‐N‐C anode demonstrates outstanding rate‐capability (267 mAh g−1 at 100 A g−1) and cycling stability (72%, 10 000 cycles). Notably, the assembled pouch cell achieves high‐energy density of 220 Wh kg−1.

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Section: Resultsmentioning

confidence: 99%

Electrocatalysis of Fe‐N‐C Bonds Driving Reliable Interphase and Fast Kinetics for Phosphorus Anode in Sodium‐Ion Batteries

Wan

et al. 2023

Adv Funct Materials

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“…169,170 More importantly, PVDF has a side reaction with Li 3 P, resulting in the fracture of the C−C bond in PVDF, so that the viscosity of the binder is attenuated; meanwhile, the active materials are inevitably lost. 171 For the sustainable development of batteries, reducing the threat of their components to the environment and manufacturing cost, switching to a water-based electrode processing route and nontoxic binder will provide a great leap in realizing the ideal electrochemical energy storage device. For the whole electrode manufacturing process, from the mixing of slurry to the final solvent recovery (Figure 36), the great advantages of using water-based electrode processing technology, aimed at reducing the environmental impact and cost factors (Table 4) of lithiumion battery production, are evidently superior to the traditional electrode system.…”

Section: Bindersmentioning

confidence: 99%

“…However, conventional PVDF binder cannot tolerate the enormous volumetric variation of the P anode and delivers poor fast-charging performance of LIBs, because the van der Waals interactions between P and PVDF binder are too weak to sustain the structural integrity of the P anode. Moreover, NMP is a dangerous, toxic, and irritating solvent, while PVDF has mutagenic and teratogenic effects. , More importantly, PVDF has a side reaction with Li 3 P, resulting in the fracture of the C–C bond in PVDF, so that the viscosity of the binder is attenuated; meanwhile, the active materials are inevitably lost …”

Section: Binders and Electrode Structure Design For The Fast-charging...mentioning

confidence: 99%

Fast-Charging Phosphorus-Based Anodes: Promises, Challenges, and Pathways for Improvement

Han,

Gong,

et al. 2024

Chem. Rev.

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Fast-charging batteries are highly sought after. However, the current battery industry has used carbon as the preferred anode, which can suffer from dendrite formation problems at high current density, causing failure after prolonged cycling and posing safety hazards. The phosphorus (P) anode is being considered as a promising successor to graphite due to its safe lithiation potential, low ion diffusion energy barrier, and high theoretical storage capacity. Since 2019, fast-charging P-based anodes have realized the goals of extreme fast charging (XFC), which enables a 10 min recharging time to deliver a capacity retention larger than 80%. Rechargeable battery technologies that use P-based anodes, along with high-capacity conversion-type cathodes or high-voltage insertion-type cathodes, have thus garnered substantial attention from both the academic and industry communities. In spite of this activity, there remains a rather sparse range of high-performance and fast-charging P-based cell configurations. Herein, we first systematically examine four challenges for fast-charging P-based anodes, including the volumetric variation during the cycling process, the electrode interfacial instability, the dissolution of polyphosphides, and the long-lasting P/electrolyte side reactions. Next, we summarize a range of strategies with the potential to circumvent these challenges and rationally control electrochemical reaction processes at the P anode. We also consider both binders and electrode structures. We also propose other remaining issues and corresponding strategies for the improvement and understanding of the fast-charging P anode. Finally, we review and discuss the existing full cell configurations based on P anodes and forecast the potential feasibility of recycling spent P-based full cells according to the trajectory of recent developments in batteries. We hope this review affords a fresh perspective on P science and engineering toward fast-charging energy storage devices.

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“…11,12 Since the above problems are similar to the sulfur cathode, the design strategies of physical obstruction and chemical adsorption can be imitated from the successful cases of the sulfur cathode to improve the electrochemical performance. Liang 13 et al developed a multifunctional binder which acted as an agent for trapping polyphosphides, preventing their shuttle. Zhang 14 et al reported that adding a functional separator between the electrolyte and phosphorus anode can effectively block the diffusion and shuttle of polyphosphides.…”

mentioning

confidence: 99%

Inhibiting the Dissolution of Lithium Polyphosphides and Enhancing the Reaction Kinetics of a Phosphorus Anode via Screening Functional Additives

Gong

Wang

Cao

et al. 2022

J. Phys. Chem. Lett.

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A high-capacity, low-cost phosphorus anode is considered as one of the most promising candidates for next-generation Li-ion batteries. Nevertheless, the dissolution/shuttle effect of lithium polyphosphides and sluggish electrochemical conversion hinder the practical application of a phosphorus anode, similar to the problems of a sulfur cathode. Although the reported functional additives with physical obstruction and chemical adsorption have been successful in improving the performance of a sulfur cathode, they can not be directly applied to phosphorus due to their deterioration and failure in low voltage. To solve the above problems, we made a systematic investigation to rationally select the functional additives (Li2O, Li2S, and LiF) and effectively guide the experiment. These functional additives possess synergetic effects, including the adsorption of soluble lithium polyphosphides and the catalytic conversion of phosphorus species. The design of these functional additives provides a guiding and screening principle for inhibiting the dissolution of polyphosphides and improving the reaction kinetics of a phosphorus anode.

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Unlocking the side reaction mechanism of phosphorus anode with binder and the development of a multifunctional binder for enhancing the performance

Cited by 13 publications

References 57 publications

Electrocatalysis of Fe‐N‐C Bonds Driving Reliable Interphase and Fast Kinetics for Phosphorus Anode in Sodium‐Ion Batteries

Electrocatalysis of Fe‐N‐C Bonds Driving Reliable Interphase and Fast Kinetics for Phosphorus Anode in Sodium‐Ion Batteries

Fast-Charging Phosphorus-Based Anodes: Promises, Challenges, and Pathways for Improvement

Inhibiting the Dissolution of Lithium Polyphosphides and Enhancing the Reaction Kinetics of a Phosphorus Anode via Screening Functional Additives

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