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

被引：10
作者：
Yuan, Ye [1 ]
Wang, Bo [1 ,2 ]
Song, Rensheng [1 ]
Wang, Fei [1 ]
Luo, Hao [1 ]
Gao, Tiantian [1 ]
Wang, Dianlong [1 ]
机构：
[1] Harbin Inst Technol, Sch Chem & Chem Engn, MIIT Key Lab Crit Mat Technol New Energy Convers, Harbin 150001, Heilongjiang, Peoples R China
[2] Harbin Inst Technol, Sch Mat Sci & Engn, Harbin 150001, Heilongjiang, Peoples R China
来源：
NEW JOURNAL OF CHEMISTRY | 2018年 / 42卷 / 09期
基金：
中国国家自然科学基金;
关键词：
CATHODE MATERIALS; LITHIUM; GRAPHENE; NANOPLATELETS; POLYSULFIDE; COMPOSITE; ANODE;
D O I：
10.1039/c8nj00745d
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
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.
引用
收藏
页码：6626 / 6630
页数：5
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