Synergistic Effect of Hydrogen Bonding and π–π Stacking Enables Long Cycle Life in Organic Electrode Materials

2021 ◽  
Vol 6 (2) ◽  
pp. 643-649
Author(s):  
Madison R. Tuttle ◽  
Shelby T. Davis ◽  
Shiyu Zhang
2020 ◽  
Author(s):  
Madison R. Tuttle ◽  
Shelby Davis ◽  
Shiyu Zhang

Small-molecule organic compounds have emerged as attractive candidates for energy storage in lithium-ion batteries due to their sustainability and modularity. To develop generalizable design principles for organic electrode materials (OEMs), we investigated the correlation between electrochemical performance and addition of functional groups that promote synergistic hydrogen bonding and π-π stacking using a series of quinone-fused aza-phenazines (QAPs) with different hydrogen bonding donor/acceptor arrays. The QAP containing the most hydrogen bonding groups (<b>3</b>) exhibits the best performance with discharge capacities of 145 mAh g<sup>-1</sup> at 2C with 82% capacity retention over 1000 cycles. The performance of <b>3</b> is attributed to the strategically incorporated -OH and -NH<sub>2</sub> groups, which facilitate strong intermolecular interactions and a tightly packed 2D structure. The intermolecular interaction strength was evaluated using variable temperature 1D <sup>1</sup>H NMR and 2D <sup>1</sup>H-<sup>1</sup>H NOESY, offering a new strategy to help understand and predict the performance of OEMs with hydrogen bonding motifs.


2020 ◽  
Author(s):  
Madison R. Tuttle ◽  
Shelby Davis ◽  
Shiyu Zhang

Small-molecule organic compounds have emerged as attractive candidates for energy storage in lithium-ion batteries due to their sustainability and modularity. To develop generalizable design principles for organic electrode materials (OEMs), we investigated the correlation between electrochemical performance and addition of functional groups that promote synergistic hydrogen bonding and π-π stacking using a series of quinone-fused aza-phenazines (QAPs) with different hydrogen bonding donor/acceptor arrays. The QAP containing the most hydrogen bonding groups (<b>3</b>) exhibits the best performance with discharge capacities of 145 mAh g<sup>-1</sup> at 2C with 82% capacity retention over 1000 cycles. The performance of <b>3</b> is attributed to the strategically incorporated -OH and -NH<sub>2</sub> groups, which facilitate strong intermolecular interactions and a tightly packed 2D structure. The intermolecular interaction strength was evaluated using variable temperature 1D <sup>1</sup>H NMR and 2D <sup>1</sup>H-<sup>1</sup>H NOESY, offering a new strategy to help understand and predict the performance of OEMs with hydrogen bonding motifs.


2018 ◽  
Vol 107 ◽  
pp. 391-396 ◽  
Author(s):  
Yidi Dong ◽  
Lei Xing ◽  
Fang Hu ◽  
Ahmad Umar ◽  
Xiang Wu

RSC Advances ◽  
2015 ◽  
Vol 5 (106) ◽  
pp. 87077-87083 ◽  
Author(s):  
Fen Ran ◽  
Xuanxuan Zhang ◽  
Yuansen Liu ◽  
Kuiwen Shen ◽  
Xiaoqin Niu ◽  
...  

Remarkable supercapacitor electrodes with a high specific supercapacitance and a super long cycle life were achieved by using hierarchical porous hollow carbon microcapsules (HPHCMs) as active materials.


2016 ◽  
Vol 52 (91) ◽  
pp. 13373-13376 ◽  
Author(s):  
Liguo Ma ◽  
Maojun Zheng ◽  
Shaohua Liu ◽  
Qiang Li ◽  
Yuxiu You ◽  
...  

We present a facile strategy to synchronously exfoliate graphite and assemble high-quality graphene on 3D Ni(OH)2 surfaces. When serving as electrode materials for supercapacitors, the resulting 3D Ni(OH)2/graphene composites exhibited excellent specific capacitance, remarkable rate capability and super-long cycle life.


ChemPhysChem ◽  
2019 ◽  
Vol 20 (7) ◽  
pp. 967-971 ◽  
Author(s):  
Masaru Yao ◽  
Hikaru Sano ◽  
Hisanori Ando ◽  
Tetsu Kiyobayashi ◽  
Nobuhiko Takeichi

2014 ◽  
Vol 56 ◽  
pp. 228-236 ◽  
Author(s):  
Masaru Yao ◽  
Tatsuhiro Numoto ◽  
Miho Araki ◽  
Hisanori Ando ◽  
Hiroyuki T. Takeshita ◽  
...  

Author(s):  
Zhiguo Hou ◽  
Lei Zhang ◽  
Jianwu Chen ◽  
Yali Xiong ◽  
Xueqian Zhang ◽  
...  

Zn2+ added into electrolyte can effectively suppress H2 evolution. Therefore, a LiMn2O4/NaTi2(PO4)3 full cell exhibits enhanced overcharging performance and excellent cycling stability up to 10 000 cycles.


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