Piperazine-Linked Phthalocyanine Covalent Organic Frameworks for Efficient Anodic Lithium Storage DOI
Rong Jiang, Xiaoyang Wang,

Chunhui Shi

et al.

ACS Applied Materials & Interfaces, Journal Year: 2025, Volume and Issue: unknown

Published: April 12, 2025

Organic anode materials have been considered as promising electrodes for achieving low-cost and sustainable lithium-ion batteries (LIBs). However, organic face challenges, such inadequate cycling stability sluggish reaction kinetics, leading to an unsatisfactory LIB performance. Covalent frameworks (COFs) possess a porous designable structure coupled with exceptional stability, making them candidates in LIBs address the challenges. Herein, two piperazine-linked conjugated phthalocyanine-based COFs (named CoPc-BTM-COF CoPc-DAB-COF) were fabricated from reacting hexafluorophthalocyanine cobalt(II) (CoPcF16) 1,2,4,5-benzenetetramine (BTM) 3,3'-diaminobenzidine (DAB), respectively. Powder X-ray diffraction electron microscopy analyses combination theoretical simulation reveal their crystalline nature sql net AA arranged stacking pattern. The pore sizes of these Pc-COFs are 1.62 1.90 nm according N2 sorption measurement, which facilitates rapid transport Li+ ions. immersion experiments disclose remarkable stability. These advantages, together nitrogen-rich skeletal structures, lead outstanding anodic storage capabilities, rate performance, favorable In particular, both exhibit high capacities 877 669 mAh g-1 at 100 mA g-1, superior most reported anodes, showing application potential high-performance LIBs.

Language: Английский

Impact of the Donor–Acceptor Structure on Photocatalytic Hydrogen Generation by Polyfluorene Polymer Dots DOI

Zhipeng Huang,

Yuyang Wu, Chenhao Yu

et al.

ACS Applied Polymer Materials, Journal Year: 2025, Volume and Issue: unknown

Published: March 4, 2025

Organic semiconductor polymers have garnered significant attention within the realm of photocatalytic hydrogen generation. Researchers designed numerous schemes to enhance efficiency generation by leveraging tunable properties their main chains. The donor–acceptor (D–A) strategy is a recognized approach for tuning photoelectric polymer semiconductors; however, its application organic demands thorough investigation. Here, we use polyfluorene derivatives study effect D–A structure on properties. After these were prepared into dots (Pdots) through nanoprecipitation method, they exhibited excellent We found that PFO-Pdots obtained rate 0.74 mmol g–1 h–1, and PFBT-Pdots with had about three times (2.23 h–1) PFO-Pdots, while PFVA-Pdots in presence D–D only one-half (0.34 PFO-Pdots. These results indicated plays critical role enhancing performance polymers. This will motivate take advantage structural tunability enable further development field

Language: Английский

Citations

0
Insights into the development of 2D covalent organic frameworks as photocatalysts in organic synthesis DOI

Lewang Yuan,

Yaoyao Peng, Zong‐Jie Guan

et al.

Acta Physico-Chimica Sinica, Journal Year: 2025, Volume and Issue: unknown, P. 100086 - 100086

Published: April 1, 2025

Language: Английский

Citations

0
Piperazine-Linked Phthalocyanine Covalent Organic Frameworks for Efficient Anodic Lithium Storage DOI
Rong Jiang, Xiaoyang Wang,

Chunhui Shi

et al.

ACS Applied Materials & Interfaces, Journal Year: 2025, Volume and Issue: unknown

Published: April 12, 2025

Organic anode materials have been considered as promising electrodes for achieving low-cost and sustainable lithium-ion batteries (LIBs). However, organic face challenges, such inadequate cycling stability sluggish reaction kinetics, leading to an unsatisfactory LIB performance. Covalent frameworks (COFs) possess a porous designable structure coupled with exceptional stability, making them candidates in LIBs address the challenges. Herein, two piperazine-linked conjugated phthalocyanine-based COFs (named CoPc-BTM-COF CoPc-DAB-COF) were fabricated from reacting hexafluorophthalocyanine cobalt(II) (CoPcF16) 1,2,4,5-benzenetetramine (BTM) 3,3'-diaminobenzidine (DAB), respectively. Powder X-ray diffraction electron microscopy analyses combination theoretical simulation reveal their crystalline nature sql net AA arranged stacking pattern. The pore sizes of these Pc-COFs are 1.62 1.90 nm according N2 sorption measurement, which facilitates rapid transport Li+ ions. immersion experiments disclose remarkable stability. These advantages, together nitrogen-rich skeletal structures, lead outstanding anodic storage capabilities, rate performance, favorable In particular, both exhibit high capacities 877 669 mAh g-1 at 100 mA g-1, superior most reported anodes, showing application potential high-performance LIBs.

Language: Английский

Citations

0