High ionic conductivity and stable phase Na11.5Sn2Sb0.5Ti0.5S12 for all-solid-state sodium batteries
文献类型：期刊论文
| 作者 | Weng, Wei; Liu, Gaozhan; Shen, Lin; Yao, Xiayin |
| 刊名 | JOURNAL OF POWER SOURCES
 |
| 出版日期 | 2021 |
| 卷号 | 512 |
| 关键词 | SUPERIONIC CONDUCTOR NA3SBS4 ELECTROLYTES NA11SN2PSE12 |
| 英文摘要 | The quaternary antimony (Sb)-based sulfide sodium solid electrolyte Na11Sn2SbS12 with good moisture stability is attractive for practical application in all-solid-state sodium batteries. However, the Na11Sn2SbS12 exhibits low room temperature ionic conductivity and it is difficult to obtain pure phase due to the limited solubility of Sb in the Na11Sn2SbS12 crystal structure. Herein, titanium (Ti)-doping Na(11+x)Sn(2)Sb(1-x)TixS(12) (x = 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.8, 1.0) materials are systematically investigated, and the highest room temperature ionic conductivity of 1.01 mS cm(-1) is achieved when x = 0.5 (Na11.5Sn2Sb0.5Ti0.5S12), which is 3 times higher than that of pristine Na11Sn2SbS12. X-ray diffraction and alternating current impedance analyses reveal that the substitution of Sb with Ti can prevent the formation of the NaSbS2 impurity, determining high ionic conductivity. Meanwhile, the Na11.5Sn2Sb0.5Ti0.5S12 demonstrates good air stability with limited H2S gas evolution. Besides, the activation energy, electronic conductivity and electrochemistry stability window for Na11.5Sn2Sb0.5Ti0.5S12 are also evaluated. Moreover, a high reversible capacity and stable cyclic performance of TiS2 based all-solid-state sodium battery using Na11.5Sn2Sb0.5Ti0.5S12 are demonstrated, showing an initial discharge capacity of 177.6 mAh g(-1) at 0.1C with a capacity retention of 83.5% based on the second discharge capacity after 50 cycles at 25 degrees C. |
| 源URL | [http://ir.nimte.ac.cn/handle/174433/21311]  |
| 专题 | 2021专题_期刊论文 |
| 作者单位 | 1.Yao, XY (corresponding author), Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Ningbo 315201, Peoples R China. 2.Yao, XY (corresponding author), Univ Chinese Acad Sci, Ctr Mat Sci & Optoelect Engn, Beijing 100049, Peoples R China. |
| 推荐引用方式 GB/T 7714 | Weng, Wei,Liu, Gaozhan,Shen, Lin,et al. High ionic conductivity and stable phase Na11.5Sn2Sb0.5Ti0.5S12 for all-solid-state sodium batteries[J]. JOURNAL OF POWER SOURCES,2021,512. |
| APA | Weng, Wei,Liu, Gaozhan,Shen, Lin,&Yao, Xiayin.(2021).High ionic conductivity and stable phase Na11.5Sn2Sb0.5Ti0.5S12 for all-solid-state sodium batteries.JOURNAL OF POWER SOURCES,512. |
| MLA | Weng, Wei,et al."High ionic conductivity and stable phase Na11.5Sn2Sb0.5Ti0.5S12 for all-solid-state sodium batteries".JOURNAL OF POWER SOURCES 512(2021). |
入库方式： OAI收割
来源：宁波材料技术与工程研究所
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