Micro-sized organometallic compound of ferrocene as high-performance anode material for advanced lithium-ion batteries

Liu, Zhen; Li, Feng; Su, Xiaoru; Qin, Chenyang; Zhao, Kun; Hu, Fang; Zhou, Mingjiong; Xia, Yongyao

doi:10.1016/j.jpowsour.2017.11.064

Cited by 18 publications

(16 citation statements)

References 13 publications

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“…A recent research reported that the organometallic compound of ferrocene could be employed as the anode material in LIBs, and metallic Fe was formed in the discharge process. 30 Based on these studies, we conceive that introducing ferrocene into SnO 2 /graphene (SnO 2 /G) composites is capable of promoting the conversion reaction and structural stability and hence inducing further enhancement of the Li-ion storage performance.…”

Section: Introductionmentioning

confidence: 99%

Ferrocene as a Novel Additive to Enhance the Lithium-Ion Storage Capability of SnO₂/Graphene Composite

Zhang

Liang

et al. 2019

ACS Appl. Mater. Interfaces

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Improving the reversibility of conversion reaction is a promising way to enhance the lithium-ion storage capability of SnO 2 -based anodes. Herein, we report ferrocene as a novel additive to improve the Li-ion storage performance of the SnO 2 /graphene (SnO 2 /G) composite. Through a simple mixing method, ferrocene can be uniformly dispersed into the SnO 2 /G electrode. It is found that the ferrocene additive can effectively suppress the agglomeration of Sn/SnO 2 and retain the nanoscale Sn/Li 2 O interface. Furthermore, metallic Fe is formed from ferrocene in the discharge process and acts as a catalyst to promote the reversible conversion between Sn/Li 2 O and SnO 2 . As a result, the SnO 2 /G electrode with the addition of 10 wt % ferrocene (10%Fc-SnO 2 /G) exhibits a superior Li-ion storage performance. It displays a reversible capacity of up to 1084.5 mAh g −1 at 0.1 A g −1 after 150 cycles with a good rate capability (752 mAh g −1 at 1 A g −1 ). In addition, the 10%Fc-SnO 2 /G electrode can retain a capacity of 787.2 mAh g −1 at 0.5 A g −1 after 220 cycles. This work demonstrates the promising additive of ferrocene in enhancing the reversible capacity of SnO 2 -based anodes for lithium-ion batteries.

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Section: Introductionmentioning

confidence: 99%

Ferrocene as a Novel Additive to Enhance the Lithium-Ion Storage Capability of SnO₂/Graphene Composite

Zhang

Liang

et al. 2019

ACS Appl. Mater. Interfaces

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“…6. All the XRD patterns show a sharp diffraction signal at 18 in accordance with the peak of PTFE, 34,35 which is overlapped with the phase of (111). With the increase of discharge depth, the characteristic peaks of (220), (311), (422) and (511) become smaller and almost disappear aer full discharge.…”

Section: Resultsmentioning

confidence: 81%

Hierarchical porous ZnMnO₃ yolk–shell microspheres with superior lithium storage properties enabled by a unique one-step conversion mechanism

Huang

Yan

et al. 2018

RSC Adv.

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“…However, experimental evidence of this theory has been limited. [54,55] To offer further clarity in this matter, 13 C NMR was used to compare the shifts of the cyclopentadiene rings of ferrocene before and after forming an adduct with the Li + ions as shown in Figure 2b. Consistent with the previous theoretical studies, following the formation of the adduct with Li + ions the carbon becomes less shielded, indicating the loss of electron density.…”

Section: Characterization Of Ferrocene Incorporation On LI + Ion Migr...mentioning

confidence: 99%

A Multifaceted Ferrocene Interlayer for Highly Stable and Efficient Lithium Doped Spiro‐OMeTAD‐based Perovskite Solar Cells

Webb

Liu

Westbrook

et al. 2022

Advanced Energy Materials

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hole mobilities within the HTL of up to 1.6 × 10 -3 cm 2 V -1 s -1 . [4] However, the use of such highly hygroscopic lithium salts has been shown to dramatically accelerate the degradation of PSCs. [5][6][7][8] Previous works have identified that upon doping with LiTFSI, lithium ions can readily become mobile and diffuse within the perovskite layer, forming hygroscopic LiX salts (where Xis a halide) which in turn rapidly degrade the perovskite. [5,[9][10][11][12][13][14] Wang et al demonstrated that following evaporation of tert-butylpyridine (tBP), a common spiro-OMeTAD additive, LiTFSI begins to form hygroscopic aggregates which hydrate the perovskite/spiro-OMeTAD interface degrading the perovskite over a period of < 1000 hours. [8] Furthermore, it has also been shown that tBP is, by itself, insufficient to prevent the migration of lithium ions. [7] To this extent, Kim et al. recently revealed that the migration of Li + is critical in the degradation of spiro-OMeTAD-based devices and is accelerated at higher temperatures, leading to the rapid degradation of the perovskite. [7] For these combined reasons spiro-OMeTAD-based PSCs consistently fall short of the practical requirements for the commercialization of solar cells. Indeed, the poor stability of LiTFSI doped spiro-OMeTAD as an HTL has become such a problem that many leading studies using the architecture replace the HTL with a more stable, yet lower efficiency, alternative or emit reporting stability entirely. [6,15] Consequently, addressing the impact of lithium on device stability is one of the biggest challenges facing the highest efficiency PSCs.As of writing, two principal strategies have emerged within the literature for improving the stability of n-i-p PSCs, namely (i) searching for new less destructive dopants or (ii) replacing spiro-OMeTAD in favor of alternative stable HTLs such as poly(triarylamine) (PTAA), poly(3-hexathiophene) (P3HT) or a range of novel molecular transporting materials (Table S1, Supporting Information). [5,[16][17][18] While these candidates can yield improvements in the long-term stability, the PCEs of resultant devices remain inferior to the spiro-OMeTAD counterparts. This performance gap has led to a trade-off between efficiency and stability in PSCs. More recently the formation of a blocking layer between the lithium doped spiro-OMeTAD HTL and the perovskite has been suggested using either graphene or flower-like MoS 2 . [11,19] Similar to the previous approaches, devices prepared using a blocking layer have yet to match the high efficiencies achieved using the conventional spiro-OMeTAD architecture, reaching up to 20.18% in devices prepared with MoS 2 . Furthermore, by blocking the Li + at the interface, the mechanism by which hygroscopic agregates are formed is not avoided. This challenge, therefore, requires new strategies that target the Li + ions within the HTL itself, preventing the accumulation of Li + at the interface and subsequent degradation. Very recently, several studies have sought to replace the Li + metal ...

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Micro-sized organometallic compound of ferrocene as high-performance anode material for advanced lithium-ion batteries

Cited by 18 publications

References 13 publications

Ferrocene as a Novel Additive to Enhance the Lithium-Ion Storage Capability of SnO₂/Graphene Composite

Ferrocene as a Novel Additive to Enhance the Lithium-Ion Storage Capability of SnO₂/Graphene Composite

Hierarchical porous ZnMnO₃ yolk–shell microspheres with superior lithium storage properties enabled by a unique one-step conversion mechanism

A Multifaceted Ferrocene Interlayer for Highly Stable and Efficient Lithium Doped Spiro‐OMeTAD‐based Perovskite Solar Cells

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Micro-sized organometallic compound of ferrocene as high-performance anode material for advanced lithium-ion batteries

Cited by 18 publications

References 13 publications

Ferrocene as a Novel Additive to Enhance the Lithium-Ion Storage Capability of SnO2/Graphene Composite

Ferrocene as a Novel Additive to Enhance the Lithium-Ion Storage Capability of SnO2/Graphene Composite

Hierarchical porous ZnMnO3 yolk–shell microspheres with superior lithium storage properties enabled by a unique one-step conversion mechanism

A Multifaceted Ferrocene Interlayer for Highly Stable and Efficient Lithium Doped Spiro‐OMeTAD‐based Perovskite Solar Cells

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Ferrocene as a Novel Additive to Enhance the Lithium-Ion Storage Capability of SnO₂/Graphene Composite

Ferrocene as a Novel Additive to Enhance the Lithium-Ion Storage Capability of SnO₂/Graphene Composite

Hierarchical porous ZnMnO₃ yolk–shell microspheres with superior lithium storage properties enabled by a unique one-step conversion mechanism