Ionic liquid-induced graphitization of biochar: N/P dual-doped carbon nanosheets for high-performance lithium/sodium storage
文献类型：期刊论文
| 作者 | Yu, Yang; Ren, Zhuoya; Li, Lei; Han, Jiangang; Tian, Ziqi; Liu, Chengguo; Chen, Jianqiang |
| 刊名 | JOURNAL OF MATERIALS SCIENCE
 |
| 出版日期 | 2021 |
| 卷号 | 56期号:13页码:8186-8201 |
| 英文摘要 | Biomass-derived graphitic carbon is becoming an attractive material for anodes in lithium-ion and sodium-ion batteries (LIBs and SIBs) owing to its sustainability. The graphitization of biochar by heating above 2600 degrees C not only requires high energy consumption but also removes heteroatoms that are conducive to electrochemical energy storage. In this study, graphitic carbon nanosheets with N/P-dual doping are facilely synthesized by one-step carbonization of pine sawdust at 800/ 1000/1200 degrees C that is priorly dissolved in 1-butyl-3-methyl-imidazolium ([Bmim]H2PO4) and used as anodes of LIBs/SIBs, respectively. [Bmim]H2PO4 simultaneously promotes the graphitization and porosities of the biochar as carbonization temperature increases in addition to providing N/Pdual doping. Used as anodes of LIBs, IWC-1200 demonstrates excellent rate performance and cyclic stability, delivering 385 mAh g(-1) at 1 Ag-1 throughout 1000 cycles. For sodium storage, IWC-1000 exhibits stable capacities of 217 mAh g(-1) at 0.1 A g(-1) and 101 mAh g(-1) at 1 Ag-1. The electrochemical performances benefit from the graphitized structure with N/P-dual doping, leading to redox pseudocapacitance for lithium/sodium storage. DFT calculations suggest that pyridinic N strongly attracts both Li and Na while P atoms inside the graphitic structure significantly increase the interlayer spacing. [GRAPHICS] . |
| 源URL | [http://ir.nimte.ac.cn/handle/174433/22219]  |
| 专题 | 中国科学院宁波材料技术与工程研究所 2021专题_期刊论文 |
| 作者单位 | 1.Chen, JQ (corresponding author), Nanjing Forestry Univ, Coll Biol & Environm, 159 Longpan Rd, Nanjing 210037, Peoples R China. 2.Tian, ZQ (corresponding author), Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Zhongguan West Rd, Ningbo 315201, Peoples R China. |
| 推荐引用方式 GB/T 7714 | Yu, Yang,Ren, Zhuoya,Li, Lei,et al. Ionic liquid-induced graphitization of biochar: N/P dual-doped carbon nanosheets for high-performance lithium/sodium storage[J]. JOURNAL OF MATERIALS SCIENCE,2021,56(13):8186-8201. |
| APA | Yu, Yang.,Ren, Zhuoya.,Li, Lei.,Han, Jiangang.,Tian, Ziqi.,...&Chen, Jianqiang.(2021).Ionic liquid-induced graphitization of biochar: N/P dual-doped carbon nanosheets for high-performance lithium/sodium storage.JOURNAL OF MATERIALS SCIENCE,56(13),8186-8201. |
| MLA | Yu, Yang,et al."Ionic liquid-induced graphitization of biochar: N/P dual-doped carbon nanosheets for high-performance lithium/sodium storage".JOURNAL OF MATERIALS SCIENCE 56.13(2021):8186-8201. |
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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