A mesoporous tungsten carbide nanostructure as a promising cathode catalyst decreases overpotential in Li-O-2 batteries
文献类型：期刊论文
| 作者 | Liu, Shuo1,2; Wang, Chengdong1; Dong, Shanmu1; Hou, Hongbin1; Wang, Ben2; Wang, Xiaogang1 ; Chen, Xiao1; Cui, Guanglei1
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| 刊名 | RSC ADVANCES
 |
| 出版日期 | 2018 |
| 卷号 | 8期号:49页码:27973-27978 |
| ISSN号 | 2046-2069 |
| DOI | 10.1039/c8ra05905e |
| 英文摘要 | Lithium-oxygen (Li-O-2) batteries as promising energy storage devices possess high gravimetric energy density and low emission. However, poor reversibility of electrochemical reactions at the cathode significantly affects the electrochemical properties of nonaqueous Li-O-2 batteries, and low charge-discharge efficiency also results in short cycle-life. In this work, functional air cathodes containing mesoporous tungsten carbide nanoparticles for improving the reversibility of positive reactions in Li-O-2 cells are designed. Mesoporous tungsten carbides are synthesized with mesoporous carbon nitride as the reactive template and carbon source. And mesoporous tungsten carbides in cathode materials display better electrochemical performance in Li-O-2 cells in comparison with mesoporous carbon nitride and hard carbon. Tungsten carbide-1 (WC-1) with larger specific surface area promotes reversible formation and decomposition of Li2O2 at the cathode and lower charge overpotential (about 0.93 V) at 100 mA g(-1), which allows the Li-O-2 cell to run up to 100 cycles. In addition, synergistic interaction between WC-1 and LiI could further decrease the charging overpotentials of Li-O-2 cells and improve the charge-discharge performances of the Li-O-2 cells. These results indicate that mesoporous electrocatalysts can be utilized as promising functional materials for Li-O-2 cells to decrease overpotentials. |
| WOS关键词 | LITHIUM-OXYGEN BATTERIES ; MOLYBDENUM-DISULFIDE ; REDUCTION REACTION ; CARBON ; LI2O2 ; NITRIDE ; G-C3N4 ; CHARGE ; NANOPARTICLES ; COCATALYSTS |
| 资助项目 | National Science Fund for Distinguished Young Scholars[51625204] ; Key Scientific and Technological Innovation Project of Shandong[2017CXZC0505] ; Shandong Provincial Natural Science Foundation[ZR2014BQ004] ; National Natural Science Foundation of China[21473228] ; Qingdao Key Lab of Solar Energy Utilization and Energy Storage technology |
| WOS研究方向 | Chemistry |
| 语种 | 英语 |
| WOS记录号 | WOS:000442078800039 |
| 出版者 | ROYAL SOC CHEMISTRY |
| 资助机构 | National Science Fund for Distinguished Young Scholars ; Key Scientific and Technological Innovation Project of Shandong ; Shandong Provincial Natural Science Foundation ; National Natural Science Foundation of China ; Qingdao Key Lab of Solar Energy Utilization and Energy Storage technology |
| 源URL | [http://ir.qibebt.ac.cn/handle/337004/12136]  |
| 专题 | 中国科学院青岛生物能源与过程研究所 |
| 通讯作者 | Chen, Xiao; Cui, Guanglei |
| 作者单位 | 1.Chinese Acad Sci, Qingdao Ind Energy Storage Res Inst, Qingdao Inst Bioenergy & Bioproc Technol, 189 Songling Rd, Qingdao 266101, Peoples R China 2.Qingdao Univ Sci & Technol, Coll Environm & Safety Engn, Qingdao 266042, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, Shuo,Wang, Chengdong,Dong, Shanmu,et al. A mesoporous tungsten carbide nanostructure as a promising cathode catalyst decreases overpotential in Li-O-2 batteries[J]. RSC ADVANCES,2018,8(49):27973-27978. |
| APA | Liu, Shuo.,Wang, Chengdong.,Dong, Shanmu.,Hou, Hongbin.,Wang, Ben.,...&Cui, Guanglei.(2018).A mesoporous tungsten carbide nanostructure as a promising cathode catalyst decreases overpotential in Li-O-2 batteries.RSC ADVANCES,8(49),27973-27978. |
| MLA | Liu, Shuo,et al."A mesoporous tungsten carbide nanostructure as a promising cathode catalyst decreases overpotential in Li-O-2 batteries".RSC ADVANCES 8.49(2018):27973-27978. |
入库方式： OAI收割
来源：青岛生物能源与过程研究所
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