Abstract

The difference in melting and boiling points between different materials is cleverly used, which the surface of tin oxide is coated with manganese oxide as a buffer layer, thereby suppressing the volume expansion. Considering that Li₂O deposits will be generated during charge–discharge, which is not conducive to lithium ion insertion and causes irreversible capacity loss. Extraction of bio-carbon materials (BC) from waste cotton. The bio-carbon materials (BC) retains intact plant fibers and can effectively store electrolytes, improve lithium ion transmission rate, ensure electron conduction efficiency, and is also an excellent SnO₂–Mn materials host. The SnO₂–Mn@BC batteries prepared by combining the bio-carbon materials (BC) with the SnO₂–Mn materials, which has excellent electrochemical performance, which the primary discharge specific capacity of electrode reached 2021.23mAh·g⁻¹(current density of 100 mAh·g⁻¹). After 100 cycles, the specific discharge capacity still maintained above 768.14 mAh·g⁻¹ with a coulombic efficiency of 99.25%.

中文翻译：

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从废棉中提取碳以有效携带氧化锡阳极

摘要

巧妙地利用了不同材料之间的熔点和沸点差，该氧化锡表面覆盖有氧化锰作为缓冲层，从而抑制了体积膨胀。考虑到在充放电过程中会生成Li ₂ O沉积物，这不利于锂离子的插入并导致不可逆的容量损失。从废棉中提取生物碳材料（BC）。生物碳材料（BC）保留了完整的植物纤维，可以有效地存储电解质，提高锂离子的传输速率，确保电子传导效率，并且还是出色的SnO ₂ -Mn材料宿主。通过将生物碳材料（BC）与SnO ₂结合而制备的SnO ₂ -Mn @ BC电池-Mn材料，具有优异的电化学性能，电极的一次放电比容量达到2021.23mAh·g ^-1（电流密度为100 mAh·g ^-1）。在100次循环之后，比放电容量仍保持在768.14mAh·g ^-1以上，库仑效率为99.25％。