First AIE probe for lithium-metal anodes

Wang, Mengshi; Liang, Hong; Wang, Li; Zhang, Hao; Wang, Jianlong; Wei, Yen; He, Xiangming; Yang, Yang

doi:10.1016/j.matt.2022.07.018

Cited by 15 publications

(11 citation statements)

References 46 publications

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“…Innovative sensing mechanism and remarkable detection capability have been achieved towards numerous analytes, including organic boron compound, 40 oxidative species 41 and lithium metal. 42 These species are of great interest in organic synthetic chemistry, analytical chemistry and material chemistry.…”

Section: Resultsmentioning

confidence: 99%

“Turn-on” fluorescence sensor for organic amines fabricatedviasustainable processing

Lin

et al. 2023

Mater. Chem. Front.

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Section: Resultsmentioning

confidence: 99%

“Turn-on” fluorescence sensor for organic amines fabricatedviasustainable processing

Lin

et al. 2023

Mater. Chem. Front.

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“…According to the intrinsic fluorescence signal of AIE fluorescent tracer, [37,38] it is accessible to directly observe and quantitate the distribution, relative abundance, and macro morphology of the SEI. In our previous works, [39,40] we had successfully developed the AIE (a solid-state fluorescence phenomenon) fluorescent probe to visualize and characterize the interfaces of lithium anodes or graphite anodes. But above fluorescent probe were exogenous probes that did not participate in the charge/discharge cycles.…”

Section: Introductionmentioning

confidence: 99%

Can We See SEI Directly by Naked Eyes?

Wang,

Liang,

Wang

et al. 2023

Advanced Materials

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Stable solid electrolyte interface (SEI) is the key to improve the electrochemical performance of lithium metal batteries. However, there are still many puzzles about SEI film that have not been well explained, due to the complexity of electrochemical reactions involving in SEI formation and the absence of direct observation methods for SEI. Here we realize the direct observation of SEI by skillfully designed fluorescent tracers acting as an SEI film‐forming additive for electrolytes. These fluorescent tracers have three important moieties: an olefin group for polymerization on anode surface so as to participate in SEI film formation during charge/discharge cycles, a polar group for Li‐ion conduction, and an AIEgen for fluorescent tracing. Therefore, the tracers participate in SEI film‐forming and result in a shining SEI film. This shining SEI film with intrinsic fluorescence signal allows direct observation and quantification on the distribution, relative abundance, and macro morphology of SEI. These fluorescent tracers can also reveal the SEI formation‐growth‐destruction regularity during charge/discharge cycles. Several summarized typical macro morphologies and evolution stages of SEI would enrich our knowledge and understanding of SEI, and help us to gain insight into the interaction between electrolyte and anode, electrochemical performance and cycle life of batteries.This article is protected by copyright. All rights reserved

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“…In contrast, easily useable optical sensing techniques that extract abundant valid information (such as thermal flow, stress, or charge accumulation) by recording in situ spectra for active materials and internal media of devices have become the focus of research. [8,[15][16][17][18][19][20][21][22][23][24][25] The essential relationship between the energy storage state and the optical properties lies in the inextricable connection between the material structure and permittivity. [26][27][28][29][30][31][32][33] Their common relationship lies in the redox reaction involving pseudocapacitive behaviors or ion insertion/desertion that results in invertible lattice spacing variation and induces continuous transformation of optical properties.…”

Section: Introductionmentioning

confidence: 99%

Unlocking ion Storage Chemistry in Aqueous Batteries via Operando Smartphone Multispectral Techniques

Sun,

Ji,

Qiu

et al. 2023

Advanced Energy Materials

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Real‐time monitoring of the dynamic charging process and state‐of‐charge inside energy storage systems is crucial for ensuring their sustainable operation. Here, a novel computational multispectral imaging reconstruction (MSIRC) strategy is presented using a smartphone for in situ monitoring of the optical states of aqueous batteries via transparent monitoring window, allowing analysis of ion storage chemistry and real‐time capacity variations. Prussian blue and MnO2 that exhibit significant and subtle color changes during the ion storage process are selected to validate this approach. Time‐domain reconstructed reflectance spectra are capable of selecting the proper wavelength with the largest variation in reconstructed reflectance and precisely monitor the ion storage process of these two materials. This indicates MSIRC's rapidly distinguishing capability between electrodes with unique ion storage mechanisms and great potential in recognizing new materials with unknown mechanisms. Furthermore, the MSIRC technique can perform operando monitoring for several kinds of Zn ion batteries using cathodes with different ion storage mechanisms. These imply the ability of MSIRC to detect the real‐time healthy state of batteries at the device level and judge the inside varying ion storage mechanism.

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First AIE probe for lithium-metal anodes

Cited by 15 publications

References 46 publications

“Turn-on” fluorescence sensor for organic amines fabricatedviasustainable processing

“Turn-on” fluorescence sensor for organic amines fabricatedviasustainable processing

Can We See SEI Directly by Naked Eyes?

Unlocking ion Storage Chemistry in Aqueous Batteries via Operando Smartphone Multispectral Techniques

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