1
|
Luo XX, Li WH, Liang HJ, Zhang HX, Du KD, Wang XT, Liu XF, Zhang JP, Wu XL. Covalent Organic Framework with Highly Accessible Carbonyls and π-Cation Effect for Advanced Potassium-Ion Batteries. Angew Chem Int Ed Engl 2022; 61:e202117661. [PMID: 35034424 DOI: 10.1002/anie.202117661] [Citation(s) in RCA: 46] [Impact Index Per Article: 23.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2021] [Indexed: 12/11/2022]
Abstract
Covalent organic frameworks (COF) possess a robust and porous crystalline structure, making them an appealing candidate for energy storage. Herein, we report an exfoliated polyimide COF composite (P-COF@SWCNT) prepared by an in situ condensation of anhydride and amine on the single-walled carbon nanotubes as advanced anode for potassium-ion batteries (PIBs). Numerous active sites exposed on the exfoliated frameworks and the various open pathways promote the highly efficient ion diffusion in the P-COF@SWCNT while preventing irreversible dissolution in the electrolyte. During the charging/discharging process, K+ is engaged in the carbonyls of imide group and naphthalene rings through the enolization and π-K+ effect, which is demonstrated by the DFT calculation and XPS, ex-situ FTIR, Raman. As a result, the prepared P-COF@SWCNT anode enables an incredibly high reversible specific capacity of 438 mA h g-1 at 0.05 A g-1 and extended stability. The structural advantage of P-COF@SWCNT enables more insights into the design and versatility of COF as an electrode.
Collapse
Affiliation(s)
- Xiao-Xi Luo
- Faculty of Chemistry, Northeast Normal University, Changchun, 130024, P. R. China
| | - Wen-Hao Li
- MOE Key Laboratory for UV Light-Emitting Materials and Technology, Northeast Normal University, Changchun, 130024, P. R. China
| | - Hao-Jie Liang
- MOE Key Laboratory for UV Light-Emitting Materials and Technology, Northeast Normal University, Changchun, 130024, P. R. China
| | - Hong-Xia Zhang
- Faculty of Chemistry, Northeast Normal University, Changchun, 130024, P. R. China
| | - Kai-Di Du
- Faculty of Chemistry, Northeast Normal University, Changchun, 130024, P. R. China
| | - Xiao-Tong Wang
- Faculty of Chemistry, Northeast Normal University, Changchun, 130024, P. R. China
| | - Xin-Fang Liu
- Faculty of Chemistry, Northeast Normal University, Changchun, 130024, P. R. China
| | - Jing-Ping Zhang
- Faculty of Chemistry, Northeast Normal University, Changchun, 130024, P. R. China
| | - Xing-Long Wu
- Faculty of Chemistry, Northeast Normal University, Changchun, 130024, P. R. China.,MOE Key Laboratory for UV Light-Emitting Materials and Technology, Northeast Normal University, Changchun, 130024, P. R. China
| |
Collapse
|
2
|
Luo X, Li W, Liang H, Zhang H, Du K, Wang X, Liu X, Zhang J, Wu X. Covalent Organic Framework with Highly Accessible Carbonyls and π‐Cation Effect for Advanced Potassium‐Ion Batteries. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202117661] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Xiao‐Xi Luo
- Faculty of Chemistry Northeast Normal University Changchun 130024 P. R. China
| | - Wen‐Hao Li
- MOE Key Laboratory for UV Light-Emitting Materials and Technology Northeast Normal University Changchun 130024 P. R. China
| | - Hao‐Jie Liang
- MOE Key Laboratory for UV Light-Emitting Materials and Technology Northeast Normal University Changchun 130024 P. R. China
| | - Hong‐Xia Zhang
- Faculty of Chemistry Northeast Normal University Changchun 130024 P. R. China
| | - Kai‐Di Du
- Faculty of Chemistry Northeast Normal University Changchun 130024 P. R. China
| | - Xiao‐Tong Wang
- Faculty of Chemistry Northeast Normal University Changchun 130024 P. R. China
| | - Xin‐Fang Liu
- Faculty of Chemistry Northeast Normal University Changchun 130024 P. R. China
| | - Jing‐Ping Zhang
- Faculty of Chemistry Northeast Normal University Changchun 130024 P. R. China
| | - Xing‐Long Wu
- Faculty of Chemistry Northeast Normal University Changchun 130024 P. R. China
- MOE Key Laboratory for UV Light-Emitting Materials and Technology Northeast Normal University Changchun 130024 P. R. China
| |
Collapse
|
3
|
Geiger T, Haupt A, Maichle-Mössmer C, Schrenk C, Schnepf A, Bettinger HF. Synthesis and Photodimerization of 2- and 2,3-Disubstituted Anthracenes: Influence of Steric Interactions and London Dispersion on Diastereoselectivity. J Org Chem 2019; 84:10120-10135. [PMID: 31390211 DOI: 10.1021/acs.joc.9b01317] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
There is increased evidence that the effect of bulky groups in organic, organometallic, and inorganic chemistry is not only repulsive but can be attractive because of London dispersion interactions. The influence of the size of primary alkyl substituents in 2- and 2,3-positions of anthracenes on the diastereoselectivity (anti vs syn dimer) of the [π4s + π4s] photoinduced dimerization is investigated. The synthesis of the anthracene derivatives was achieved by Suzuki-Miyaura reaction of 2,3-dibromoanthracene with alkylboronic acids as well as by reduction of anthraquinones that were obtained from 2,3-disubstituted 1,3-butadienes and naphthoquinone followed by dehydrogenation. The mixtures of dianthracene isomers were analyzed with respect to the anti/syn-ratio of the products by X-ray crystallography and nuclear Overhauser effect spectroscopy. While for the 2,3-dimethylanthracene the anti and syn isomers were formed in equal amounts, the anti dimers are the major products in all other cases. A linear correlation (R2 = 0.98) between the steric size (Charton parameter) and the isomeric ratio suggests that the selectivity is dominated by classical repulsive steric effects. An exception is the iso-butyl substituent that produces an increased amount of the syn isomer. It is suggested that this is due to an exalted effect of London dispersion interactions.
Collapse
|
4
|
Garcia L, Anker MD, Mahon MF, Maron L, Hill MS. Coordination of arenes and phosphines by charge separated alkaline earth cations. Dalton Trans 2018; 47:12684-12693. [DOI: 10.1039/c8dt03124j] [Citation(s) in RCA: 50] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Generation of ‘naked’ β-diketiminato magnesium and calcium cations allows the isolation of benzene, toluene, 1,4-difluorobenzene and terminal phosphine adducts.
Collapse
|