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- W4385311946 abstract "Manufacturing thin-film components is crucial for achieving high-efficiency and high-power thermal batteries (TBs). However, developing binders with low gas production at the operating temperature range of TBs (400−550 °C) has proven to be a significant challenge. Here we report the use of acrylic acid derivative terpolymer (LA136D) as a low-volatile binder for thin-film cathode fabrication and studied the chain scission and chemical bond-breaking mechanisms in pyrolysis. It is shown LA136D defers to random-chain scission and cross-linking chain scission mechanisms, which gifts it with a low proportion of volatile products (ψ, ψ=39.2wt%) at even up to 550 °C, well below those of the conventional PVDF (77.6wt%) and SBR (99.2wt%) binders. Surprisingly, LA136D contributes to constructing a thermal shock-resistant cathode due to the step-by-step bond-breaking process. This is beneficial for the overall performance of TBs. In a 130 s pulse discharging test, the thin-film cathodes exhibited a remarkable 440% reduction in polarization and 300% enhancement in the utilization efficiency of cathode materials, while with just a slight increase of 0.05 MPa in gas pressure compared with traditional “thick-film” cathode. Our work highlights the potential of LA136D as a low-volatile binder for thin-film cathodes and shows the feasibility of manufacturing high-efficiency and high-power TBs through polymer molecule engineering." @default.
- W4385311946 created "2023-07-28" @default.
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- W4385311946 date "2023-07-27" @default.
- W4385311946 modified "2023-10-16" @default.
- W4385311946 title "Low-volatile binder enables thermal shock-resistant thin-film cathodes for thermal batteries" @default.
- W4385311946 doi "https://doi.org/10.22541/au.169042870.00419265/v1" @default.
- W4385311946 hasPublicationYear "2023" @default.
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