Synthesis of Nano FePO4 and Electrochemical Characterization of Composite Cathode Material LiFePO4/C
Source abstract
Abstract
以Fe 3＋ 为铁源, 采用控制结晶技术合成了纳米FePO 4 · x H 2 O, 将FePO 4 · x H 2 O于500℃热处理4?h后得到纳米FePO4前驱体, 然后通过碳热还原在不同温度下煅烧合成橄榄石结构的纳米LiFePO4/C样品. 采用差热/热重、X射线衍射、扫描电镜、比表面测试、电化学性能测试等分析测试方法对纳米FePO 4 · x H 2 O、FePO 4 前驱体及不同煅烧温度下制得的纳米LiFePO 4 /C样品进行表征.研究结果表明, 700℃烧结10 h合成LiFePO 4 /C样品的粒径在40~100 nm左右, 比表面积为79.8 m 2 /g; 700℃煅烧合成样品在电压2.5~4.2 V, 倍率为0.1 C 、1 C 、5 C 、10 C 、15 C 时的放电比容量分别达到156.5、134.9、105.8、90.3和80.9 mAh/g, 具有较好的倍率性能; 样品还表现出较好的容量保持率.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Advancements in Battery Materials · Extraction and Separation Processes · Advanced Battery Technologies Research
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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