期刊
JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY
卷 18, 期 2, 页码 1343-1346出版社
AMER SCIENTIFIC PUBLISHERS
DOI: 10.1166/jnn.2018.14920
关键词
Iron-Antimony; Red Phosphorus; Anode; Alloy Composite; Lithium-Ion Batteries
类别
资金
- Basic Science Research Program through the National Research Foundation of Korea (NRF) - Ministry of Science, ICT and Future Planning [2015R1C1A1A02036472]
- Nuclear Power Core Technology Development Program of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) from the Ministry of Trade, Industry and Energy, Republic of Korea [20151520100930]
- National Research Foundation of Korea [2015R1C1A1A02036472] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
We have synthesized a novel composite material, FeSb2 alloy with red phosphorus (P) dispersed in a conductive carbon matrix, using high-energy ball milling (HEBM). The introduction of red P into FeSb2 alloy led to a formation of Sb phase along with FeSb2 phase due to the difference of binding energy between the elements. The morphology and structure were analyzed by transmission electron microscopy (TEM) and X-ray diffraction (XRD). The active components (Sb and P) react with Li+ ions while inactive element (Fe) and carbon matrix act as a metal framework to support the electrochemically active Sb and as a buffer to reduce volume change during cycling, respectively. Among electrodes (FeSb2, FeSb2-P, FeSb2-P@C), the FeSb2-P@C electrode demonstrated high reversible capacity of 400 mAh g I with a good capacity retention of similar to 68% at 50 cycles and high rate reversible capacity of -470 mAh g(-1) at a current rate of 3000 mA g(-1)
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