Development of improved lithium-ion batteries (LIB) by using charged lithium ion containing organic microporous polymer networks as a polyelectrolyte
使用含有有机微孔聚合物网络的带电锂离子作为聚电解质开发改进的锂离子电池(LIB)
基本信息
- 批准号:289499427
- 负责人:
- 金额:--
- 依托单位:
- 依托单位国家:德国
- 项目类别:Research Fellowships
- 财政年份:2016
- 资助国家:德国
- 起止时间:2015-12-31 至 2016-12-31
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
A LIB is built up of electrodes, often a graphite anode and a lithium metal oxide cathode such as LiCoO2 or LiMn2O4 and an electrolyte which ensures the lithium ion transport from one to the other electrode. The coordination of the ions within electrolytes is crucial for the lithium ion conductivity and consequently for the energy density of the LIB. For that reason, weakly coordinating anions, so-called WCAs especially borates, were often used as counter ions to lithium ions. Charged microporous polymer networks called Li-ABNs consist of cross-linked anionic WCA units having an extremely weak coordination to the incorporated lithium ions within the pores. In addition, a new synthesis will be presented for the formation of a novel soluble charged microporous polymer network on the principle of PIMs. This polymer called WCA-PIM should be consisted of spirobifluorene and borate WCA units with lithium ions within the pores. Due to the good solubility of this polymer in solvents, the preparation of membrane films can be simplified. Additionally, gel polymer electrolytes will be prepared by swelling the polymers in solvents. A high ionic conductivity of the lithium ions for these polymers is expected. Therefore, these polymers represent suitable polyelectrolytes. By using such polymers as electrolytes, an improvement in safety, energy density and lifetime of these novel LIBs is predicted.
LIB由电极(通常是石墨阳极和锂金属氧化物阴极(例如LiCoO 2或LiMn 2 O 4))以及确保锂离子从一个电极传输到另一个电极的电解质组成。电解质内离子的配位对于锂离子导电性以及因此对于LIB的能量密度至关重要。因此,弱配位阴离子,即所谓的WCA,特别是硼酸盐,通常用作锂离子的抗衡离子。被称为Li-ABN的带电微孔聚合物网络由交联的阴离子WCA单元组成,所述交联的阴离子WCA单元与孔内并入的锂离子具有极弱的配位。此外,还提出了一种新的合成方法,用于形成一种新型的可溶性带电微孔聚合物网络的原理PIM。这种聚合物称为WCA-PIM,应该由螺二芴和硼酸酯WCA单元组成,其中锂离子在孔内。由于该聚合物在溶剂中的良好溶解性,可以简化膜的制备。此外,凝胶聚合物电解质将通过在溶剂中溶胀聚合物来制备。预期这些聚合物的锂离子的高离子电导率。因此,这些聚合物代表合适的聚电解质。通过使用这样的聚合物作为电解质,预测这些新型LIB的安全性、能量密度和寿命的改善。
项目成果
期刊论文数量(1)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
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Dr. Sabrina Fischer其他文献
Dr. Sabrina Fischer的其他文献
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