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Flower-like Bi2S3 nanostructures as highly efficient anodes for all-solid-state lithium-ion batteries†
RSC Advances ( IF 3.9 ) Pub Date : 2019-09-18 00:00:00 , DOI: 10.1039/c9ra05055h Pooja Kumari 1, 2 , Kamlendra Awasthi 2 , Shivani Agarwal 3 , Takayuki Ichikawa 1, 4 , Manoj Kumar 2 , Ankur Jain 4
RSC Advances ( IF 3.9 ) Pub Date : 2019-09-18 00:00:00 , DOI: 10.1039/c9ra05055h Pooja Kumari 1, 2 , Kamlendra Awasthi 2 , Shivani Agarwal 3 , Takayuki Ichikawa 1, 4 , Manoj Kumar 2 , Ankur Jain 4
Affiliation
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Herein, we introduce the detailed electrochemical reaction mechanism of Bi2S3 (bulk as well as nanostructure) as a highly efficient anode material with Li-ions in an all-solid-state Li-ion battery (LIB). Flower-like Bi2S3 nanostructures were synthesized by a hydrothermal method and were used as an anode material in a LIB with LiBH4 as a solid electrolyte. The X-ray diffraction (XRD) pattern verified the formation of Bi2S3 nanostructures, which belongs to the orthorhombic crystal system (JCPDS no. 00-006-0333) with the Pbnm space group. Morphological studies confirmed the flower-like structure of the obtained product assembled from nanorods with the length and diameter in the range of 150–400 nm and 10–150 nm respectively. The electrochemical galvanostatic charge–discharge profile of these nanostructures demonstrates exciting results with a high discharge and charge capacity of 685 mA h g−1 & 494 mA h g−1 respectively at 125 °C. The discharge and charge capacities were observed as 375 mA h g−1 and 352 mA h g−1 after 50 cycles (with 94% coulombic efficiency), which are much better than the cells having bulk Bi2S3 as the anode material.
中文翻译：
花状 Bi2S3 纳米结构作为全固态锂离子电池的高效阳极†
在此，我们介绍了在全固态锂离子电池 (LIB) 中作为具有锂离子的高效负极材料Bi 2 S 3 （块体结构和纳米结构）的详细电化学反应机理。采用水热法合成了花状Bi 2 S 3纳米结构，并在以LiBH 4为固体电解质的LIB中用作负极材料。X射线衍射（XRD）图证实了Bi 2 S 3纳米结构的形成，其属于正交晶系（JCPDS no. 00-006-0333）与Pbnm空间群。形态学研究证实了所得产物的花状结构，由长度和直径分别在 150-400 nm 和 10-150 nm 范围内的纳米棒组装而成。这些纳米结构的电化学恒电流充放电曲线展示了令人兴奋的结果，在 125 °C 下分别具有 685 mA hg -1和 494 mA hg -1的高放电和充电容量。在50个循环后观察到放电和充电容量分别为375 mA hg -1和352 mA hg -1 （库仑效率为94%），这比具有块状Bi 2 S 3作为负极材料的电池要好得多。
更新日期：2019-09-18
中文翻译：
花状 Bi2S3 纳米结构作为全固态锂离子电池的高效阳极†
在此，我们介绍了在全固态锂离子电池 (LIB) 中作为具有锂离子的高效负极材料Bi 2 S 3 （块体结构和纳米结构）的详细电化学反应机理。采用水热法合成了花状Bi 2 S 3纳米结构，并在以LiBH 4为固体电解质的LIB中用作负极材料。X射线衍射（XRD）图证实了Bi 2 S 3纳米结构的形成，其属于正交晶系（JCPDS no. 00-006-0333）与Pbnm空间群。形态学研究证实了所得产物的花状结构，由长度和直径分别在 150-400 nm 和 10-150 nm 范围内的纳米棒组装而成。这些纳米结构的电化学恒电流充放电曲线展示了令人兴奋的结果，在 125 °C 下分别具有 685 mA hg -1和 494 mA hg -1的高放电和充电容量。在50个循环后观察到放电和充电容量分别为375 mA hg -1和352 mA hg -1 （库仑效率为94%），这比具有块状Bi 2 S 3作为负极材料的电池要好得多。
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