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2026 A Continuous Carbon Nanotube Sheath Enables Ultrahigh Energy Density a…

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댓글 0건 조회 384회 작성일 26-02-06 12:16

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  • The demand for high-energy lithium-ion batteries has driven efforts to enhance energy density through strategies such as the adoption of high-capacity materials, increasing active material content, and optimizing electrode architectures with denser and thicker designs. In parallel, dry-processed electrodes have emerged as a promising alternative to achieve these goals. However, the dry-processed electrodes face challenges due to the uneven distribution of conductive additives in cathodes and the prevailing notion about unsuitable PTFE binders in anodes. Here, we demonstrate a fully dry-to-dry cell architecture by uniformly attaching single-walled carbon nanotubes onto Ni-rich cathode surfaces, forming a continuous conductive network while validating the compatibility of PTFE binders in anodes. As a result, the dry-to-dry cells achieved an energy density of 945 Wh L−1 and 310 Wh kg−1 at a high areal capacity of 5 mAh cm−2, with superior performance (80% SOC in 20 minutes, 78% capacity retention at 500 cycles).


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