Controlled Synthesis of Mesoporous π-Conjugated Polymer Nanoarchitectures as Anodes for Lithium-Ion Batteries

作者：Shi, Limin; Li, Wenda; Wu, Yong; Wei, Facai; Zhang, Tingting; Fu, Jianwei; Jing, Chengbin; Cheng, Jiangong; Liu, Shaohua^*

来源：Macromolecular Rapid Communications, 2022, 43(14): 2100897.

DOI：10.1002/marc.202100897

• controllable synthesis
• lithium-ions batteries
• nanomicelles
• self-assembly
• pi-conjugated mesoporous polymers

Conjugated polymers possess better electron conductivity due to large pi-electron conjugated configuration endowing them significant scientific and technological interest. However, the obvious deficiency of active-site underutilization impairs their electrochemical performance. Therefore, designing and engineering pi-conjugated polymers with rich redox functional groups and mesoporous architectures could offer new opportunities for them in these emerging applications and further expand their application scopes. Herein, a series of 1,3,5-tris(4-aminophenyl) benzene (TAPB)-based pi-conjugated mesoporous polymers (pi-CMPs) are constructed by one-pot emulsion-induced interface assembly strategy. Furthermore, co-induced in situ polymerization on 2D interfaces by emulsion and micelles is explored, which delivers sandwiched 2D mesoporous pi-CMPs-coated graphene oxides (GO@mPTAPB). Benefiting from specific redox-active functional groups, excellent electron conductivity and a 2D mesoporous conjugated framework, GO@mPTAPB exhibits high capability of accommodating Li+ anions (up to 382 mAh g(-1) at 0.2 A g(-1)) and outstanding electrochemical stability (87.6% capacity retention after 1000 cycles). The ex situ Raman and impedance spectra are further applied to reveal the high reversibility of GO@mPTAPB. This work will greatly promote the development of advanced pi-CMPs-based organic anodes toward energy storage devices.

• 单位
  郑州大学; 中国科学院