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A quinone-based oligomeric lithium salt for superior Li–organic batteries
| Content Provider | Semantic Scholar |
|---|---|
| Author | Song, Zhiping Qian, Yumin Liu, Xizheng Zhang, Tao Zhu, Yanbei Yu, Haijun Otani, Minoru Zhou, Haoshen |
| Copyright Year | 2014 |
| Abstract | Organic electrode materials are promising alternatives to transition-metal based intercalation compounds for the next generation of high-performance and sustainable batteries. Herein, a novel quinone-based organic, lithium salt of poly(2,5-dihydroxy-p-benzoquinonyl sulfide) (Li2PDHBQS), was successfully synthesized through a simple one-step polycondensation reaction, and applied as a cathode for Li–organic batteries. As an oligomeric lithium salt with average polymerization degree of 7, Li2PDHBQS combines the advantages of the O⋯Li⋯O coordination bond and increased molecular weight, thus solves absolutely the dissolution problem of active material in non-aqueous electrolytes, which has seriously hindered development of organic electrode materials. Benefiting from the high theoretical capacity, intrinsic insolubility, fast reaction kinetics of the quinone group, accelerated Li-ion transport and uniform blending with conductive carbon, as well as the stable amorphous structure, Li2PDHBQS shows superior comprehensive electrochemical performance including high reversible capacity (268 mA h g−1), high cycling stability (1500 cycles, 90%), high rate capability (5000 mA g−1, 83%) and high Coulombic efficiency (99.9–100.1%). Investigation of the structure–property relationship of Li2PDHBQS and its analogues also gives new insights into developing novel quinone-based organic electrode materials, for building better Li–organic or Na–organic batteries beyond traditional Li-ion batteries. |
| Starting Page | 4077 |
| Ending Page | 4086 |
| Page Count | 10 |
| File Format | PDF HTM / HTML |
| DOI | 10.1039/C4EE02575J |
| Volume Number | 7 |
| Alternate Webpage(s) | http://www.rsc.org/suppdata/ee/c4/c4ee02575j/c4ee02575j1.pdf |
| Alternate Webpage(s) | https://doi.org/10.1039/C4EE02575J |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
