Improving the Interfacial Stability between Lithium and Solid-State Electrolyte via Dipole-Structured Lithium Layer Deposited on Graphene Oxide
文献类型：期刊论文
| 作者 | Wang, Muqin; Peng, Zhe; Luo, Wenwei; Zhang, Qiang; Li, Zhendong; Zhu, Yun; Lin, Huan; Cai, Liangting; Yao, Xiayin; Ouyang, Chuying |
| 刊名 | ADVANCED SCIENCE
 |
| 出版日期 | 2020 |
| 卷号 | 7期号:13 |
| 关键词 | METAL ANODES LI10GEP2S12 BATTERIES BEHAVIOR |
| DOI | 10.1002/advs.202000237 |
| 英文摘要 | Utilization of lithium (Li) metal anode in solid-state batteries (SSBs) with sulfide solid-state electrolyte (SSE) is hindered by the instable Li/SSE interface. A general solution to solve this problem is to place an expensive indium (In) foil between the SSE and Li, while it decreases the output voltage and thus the energy density of the battery. In this work, an alternative strategy is demonstrated to boost the cycling performances of SSB by wrapping a graphene oxide (GO) layer on the anode. According to density functional theory results, initial deposition of a thin Li layer on the defective GO sheets leads to the formation of a dipole structure, due to the electron-withdrawing ability of GO acting on Li. By incorporating GO sheets in a nanocomposite of copper-cuprous oxide-GO (Cu-Cu2O-GO, CCG), a composite Li anode enables a high coulombic efficiency above 99.5% over 120 cycles for an SSB using Li10GeP2S12 SSE and LiCoO2 cathode, and the sulfide SSE is not chemically decomposed after cycling. The highest occupied molecule orbital/lowest unoccupied molecular orbital energy gap of this Li/GO dipole structure likely stretches over those of Li and sulfide SSE, enabling stabilized Li/SSE interface that can replace the expensive In layer as Li protective structure in SSBs. |
| 学科主题 | Chemistry ; Science & Technology - Other Topics ; Materials Science |
| 源URL | [http://ir.nimte.ac.cn/handle/174433/20791]  |
| 专题 | 2020专题 2020专题_期刊论文 |
| 作者单位 | 1.Peng, Z 2.Wang, DY (corresponding author), Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Ningbo 315201, Peoples R China. 3.Ouyang, CY (corresponding author), Jiangxi Normal Univ, Dept Phys, Lab Computat Mat Phys, Nanchang 330022, Jiangxi, Peoples R China. |
| 推荐引用方式 GB/T 7714 | Wang, Muqin,Peng, Zhe,Luo, Wenwei,et al. Improving the Interfacial Stability between Lithium and Solid-State Electrolyte via Dipole-Structured Lithium Layer Deposited on Graphene Oxide[J]. ADVANCED SCIENCE,2020,7(13). |
| APA | Wang, Muqin.,Peng, Zhe.,Luo, Wenwei.,Zhang, Qiang.,Li, Zhendong.,...&Wang, Deyu.(2020).Improving the Interfacial Stability between Lithium and Solid-State Electrolyte via Dipole-Structured Lithium Layer Deposited on Graphene Oxide.ADVANCED SCIENCE,7(13). |
| MLA | Wang, Muqin,et al."Improving the Interfacial Stability between Lithium and Solid-State Electrolyte via Dipole-Structured Lithium Layer Deposited on Graphene Oxide".ADVANCED SCIENCE 7.13(2020). |
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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