Polyethyleneimine/Polyacrylamide Composite as Cross-linkable Aqueous Binder for Si/C Anodes of Lithium-ion Batteries
文献类型：期刊论文
| 作者 | Deng, Pan1,2; Chen, Cheng2; Zhang, Ling-zhi2
|
| 刊名 | ACTA POLYMERICA SINICA
 |
| 出版日期 | 2021-11-01 |
| 卷号 | 52期号:11页码:1473-1480 |
| 关键词 | Lithium-ion battery Si/C anode Aqueous binder |
| DOI | 10.11777/j.issn1000-3304.2021.21095 |
| 通讯作者 | Zhang, Ling-zhi(lzzhang@ms.giec.ac.cn) |
| 英文摘要 | High-capacity Si/C anodes face the huge volume change during Li insertion/extraction process, which consequently leads to the pulverization of the silicon and eventually capacity fading and poor cycle life of lithium-ion batteries. To tackle this issue, new binder materials is extensively explored to improve the cycle life by effectively alleviating the huge volume change, and thus improving the cycling life. In this work, a new cross-linkable aqueous composite binder based on branched polyethyleneimine and polyacrylamide (BPEI-PAM) for Si/C anodes is reported. TGA, DSC, FTIR measurements are performed to characterize the crosslinking reaction of BPEI and PAM and their thermal properties. The electrochemical performances of the Si anodes with BPEI-PAM new binder are investigated and compared with the conventional aqueous binder of carboxymethyl cellulose/styrene butadiene rubber (CMC/SBR). By using the optimized BPEI-PAM binder (1:6 in molar ratio), the Si/C electrode exhibits the higher peel strength of 0.82 N/cm as compared with 0.32 N/cm for CMC/SBR. Even at a high loading of 3.0 mg/cm(2), the Si/C electrode with BPEI-PAM can still maintain 81.3% capacity retention after 200 cycles, better than 76.1% for the electrode with CMC/SBR. This improved electrochemical performances can be attributed to the higher adhesion property of BPEI-PAM binder after crosslinking during the process of Si/C electrodes. |
| WOS关键词 | SILICON-GRAPHITE COMPOSITE ; HIGH-CAPACITY ANODES ; NETWORK BINDER ; ELECTRODES ; ALGINATE |
| WOS研究方向 | Polymer Science |
| 语种 | 英语 |
| WOS记录号 | WOS:000717324100006 |
| 出版者 | SCIENCE PRESS |
| 源URL | [http://ir.giec.ac.cn/handle/344007/35330]  |
| 专题 | 中国科学院广州能源研究所 |
| 通讯作者 | Zhang, Ling-zhi |
| 作者单位 | 1.Univ Sci & Technol China, Nano Sci & Technol Inst, Suzhou 215123, Peoples R China 2.Chinese Acad Sci, Guangzhou Inst Energy Convers, CAS Key Lab Renewable Energy Guangdong Prov Key L, Guangzhou 510640, Peoples R China |
| 推荐引用方式 GB/T 7714 | Deng, Pan,Chen, Cheng,Zhang, Ling-zhi. Polyethyleneimine/Polyacrylamide Composite as Cross-linkable Aqueous Binder for Si/C Anodes of Lithium-ion Batteries[J]. ACTA POLYMERICA SINICA,2021,52(11):1473-1480. |
| APA | Deng, Pan,Chen, Cheng,&Zhang, Ling-zhi.(2021).Polyethyleneimine/Polyacrylamide Composite as Cross-linkable Aqueous Binder for Si/C Anodes of Lithium-ion Batteries.ACTA POLYMERICA SINICA,52(11),1473-1480. |
| MLA | Deng, Pan,et al."Polyethyleneimine/Polyacrylamide Composite as Cross-linkable Aqueous Binder for Si/C Anodes of Lithium-ion Batteries".ACTA POLYMERICA SINICA 52.11(2021):1473-1480. |
入库方式： OAI收割
来源：广州能源研究所
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