具有高储锂和长循环性能的新型共轭梯形结构寡聚物正极。
Novel Conjugated Ladder-Structured Oligomer Anode with High Lithium Storage and Long Cycling Capability.
机构信息
School of Materials Science and Engineering, Nanyang Technological University , Singapore, 639798, Singapore.
Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University (NanjingTech) , 30 South Puzhu Road, Nanjing 211816, China.
出版信息
ACS Appl Mater Interfaces. 2016 Jul 6;8(26):16932-8. doi: 10.1021/acsami.6b04277. Epub 2016 Jun 21.
Herein we report the development of nanostructured poly(1,4-dihydro-11H-pyrazino[2',3':3,4]cyclopenta[1,2-b]quinoxalin-11-one) (PPCQ), a novel conjugated ladderlike oligomer with the presence of a rich amount of heteroatoms, as the anode material. Beyond its remarkable lithium storage of 972 mAh g(-1) after 120 cycles, the superior cycle life and stable capacity performance of 489 mAh g(-1) revealed by ultralong testing of 1000 cycles (with an average Coulombic efficiency 99.8%) at a high current density of 2.5 A g(-1) indicate its excellent electrochemical stability to be promisingly applied for high-performance lithium-ion batteries (LIBs).
在此，我们报告了纳米结构聚（1,4-二氢-11H-吡嗪并[2',3':3,4]环戊并[1,2-b]喹喔啉-11-酮）（PPCQ）的开发，这是一种具有丰富杂原子的新型共轭梯形低聚物，可用作阳极材料。除了在 120 次循环后具有 972 mAh g(-1)的显著锂存储性能外，通过在 2.5 A g(-1)的高电流密度下进行的超长 1000 次循环（平均库仑效率为 99.8%）测试，还揭示了其优异的循环寿命和稳定的容量性能，为 489 mAh g(-1)，这表明其具有出色的电化学稳定性，有望应用于高性能锂离子电池（LIBs）。
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