碳基复合材料与混合酸盐-铁酸盐,在高温下提高电化学性能
Sonya Harizanova1, Trajche Tushev1, Violeta Koleva1
1Institute of General and Inorganic Chemistry, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria.
Materials (Basel, Switzerland)
|October 14, 2023
概括
含有减少氧化石墨烯 (rGO) 的铁酸盐-铁酸盐 (NFPP) 复合物对离子电池具有前景. 在和细胞中,NFPP/rGO表现出卓越的性能,特别是在高温下.
科学领域:
- 材料科学 材料科学 材料科学
- 电化学 电化学 电化学
- 储能 储能 储能 储能 储能 储能
背景情况:
- 铁酸盐-酸盐 (Na4Fe3(PO4) 2P2O7,NFPP) 是离子电池的一个有前途的阴极材料.
- 它的电化学性能受到低电子导电率的显著限制,需要优化合成方法.
研究的目的:
- 开发一种简单和统一的方法来合成NFPP复合材料,其中包括减少的石墨烯氧化物 (rGO) 和碳黑 (C).
- 评估这些复合材料在高温下作为离子和离子电池中的电极材料的性能.
主要方法:
- 合成NFPP/rGO和NFPP/C复合材料.
- 在20°C和40°C的和半电池中评估电化学性能.
- 使用现场X射线衍射 (XRD) 和显微镜研究进行表征.
主要成果:
- 与NFPP/C相比,NFPP/rGO复合材料在Na和Li电池中表现出优越的电化学性能.
- 在半电池中,NFPP/rGO在20°C时达到95 mAh/g的可逆容量,在40°C时达到115 mAh/g,具有很高的循环稳定性.
- 虽然NFPP/rGO在电池中表现出良好的容量,但在40°C时循环稳定性下降.
结论:
- 在NFPP/rGO中的混合储能机制有助于提高其性能.
- 在高温下,NFPP/rGO表现出卓越的储存能力,这标志着商业化迈出的重要一步.
关键词:
Na4Fe3(PO4)2P2O7O7是什么意思?Na4Fe3(PO4)2P2O7是什么意思?Na4Fe3是什么意思?Na4Fe3是什么意思?碳复合材料的碳复合材料标志性特征的描述.混合金属离子电池是混合金属离子电池.离子电池是一种离子电池.在rGOGO中使用.离子电池 离子电池结构的结构结构的结构.综合合成是一种合成.更多相关视频
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