A LiFePO4/Li2Sn hybrid system with enhanced Li-ion storage performance

作者：Yuan, Ye; Wang, Bo^*; Song, Rensheng; Wang, Fei; Luo, Hao; Gao, Tiantian; Wang, Dianlong^*

来源：New Journal of Chemistry, 2018, 42(9): 6626-6630.

DOI：10.1039/c8nj00745d

• CATHODE MATERIALS
• LITHIUM
• GRAPHENE
• NANOPLATELETS
• POLYSULFIDE
• COMPOSITE
• ANODE

A LiFePO4 (LFP)/lithium polysulfide (Li2Sn) hybrid system was designed using a LFP cathode and a Li2Sn-added electrolyte to improve the Li-ion storage performance. In the LFP cathode, a commercial LFP product was introduced as the active material. And the Li2Sn-added electrolyte was prepared through a facile liquid-phase process. Benefiting from the synergistic effect for energy-storage between the LFP component and the Li2Sn component, the designed LFP/Li2Sn hybrid system exhibited a large specific capacity (439 mA h g(-1) at 0.2C), good rate performance (323 mA h g(-1) at 2C) and stable cycling property (82% capacity retention over 200 cycles). It is believed that the designed LFP/Li2Sn hybrid system and the proposed hybrid energy-storage concept could advance the development of electrochemical energy storage.

• 出版日期2018-5-7
• 单位哈尔滨工业大学