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Ligand-coordination effects on the selective hydrogenation of acetylene in single-site Pd-ligand supported catalysts. J Catal 2022. [DOI: 10.1016/j.jcat.2022.06.010] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Chen Z, Wang J, Cai T, Hu Z, Chu J, Wang F, Gan X, Song Z. Constructing Extended π-Conjugated Molecules with o-Quinone Groups as High-Energy Organic Cathode Materials. ACS APPLIED MATERIALS & INTERFACES 2022; 14:27994-28003. [PMID: 35695375 DOI: 10.1021/acsami.2c06252] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Although organic cathode materials with sustainability and structural designability have great potential for rechargeable lithium batteries, the dissolution issue presents a huge challenge to meet the demands of cycling stability and energy density simultaneously. Herein, we have designed and successfully synthesized two novel small-molecule organic cathode materials (SMOCMs) by the same innovative route, namely 7,14-diazabenzo[a]tetracene-5,6,8,13-tetraone (DABTTO) and 7,9,16,18-tetraazadibenzo[a,l]pentacene-5,6,8,14,15,17-hexaone (TADBPHO). The integrated p-quinone, o-quinone, and pyrazine groups provide these SMOCMs with attractive theoretical capacities of 473 and 568 mAh g-1 based on 6- and 10-electron reactions, respectively, which were almost fully utilized within 0.8-3.8 V vs Li+/Li. The extended aromatic nucleus of TADBPHO makes it much less soluble than DABTTO and thus able to achieve the highest level of cycling stability (66% @ 500th cycle) for SMOCMs in addition to the exceptional energy density (364 mAh g-1 × 2.56 V = 932 Wh kg-1) within 1.5-3.8 V. In addition to the excellent electrochemical performance, the redox reaction and capacity fading mechanisms have been also investigated in detail. The novel approach to construct extended π-conjugated molecules with o-quinone groups is enlightening for the development of high-energy and stable OCMs for future efficient and sustainable energy storage devices.
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Affiliation(s)
- Zugui Chen
- Hubei Key Lab of Electrochemical Power Sources, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, People's Republic of China
| | - Junxiao Wang
- Hubei Key Lab of Electrochemical Power Sources, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, People's Republic of China
| | - Taotao Cai
- Hubei Key Lab of Electrochemical Power Sources, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, People's Republic of China
| | - Zijun Hu
- Hubei Key Lab of Electrochemical Power Sources, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, People's Republic of China
| | - Jun Chu
- Hubei Key Lab of Electrochemical Power Sources, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, People's Republic of China
| | - Feng Wang
- Hubei Key Lab of Electrochemical Power Sources, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, People's Republic of China
| | - Xiaotang Gan
- Hubei Key Lab of Electrochemical Power Sources, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, People's Republic of China
| | - Zhiping Song
- Hubei Key Lab of Electrochemical Power Sources, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, People's Republic of China
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Chen L, Ali IS, Sterbinsky GE, Zhou X, Wasim E, Tait SL. Ligand-coordinated Ir single-atom catalysts stabilized on oxide supports for ethylene hydrogenation and their evolution under a reductive atmosphere. Catal Sci Technol 2021. [DOI: 10.1039/d0cy01132k] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Effective, stable, durable, and tunable Ir-ligand single-atom catalysts for ethylene hydrogenation, studied in situ for structural evolution of Ir single-atoms under a reducing atmosphere.
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Affiliation(s)
- Linxiao Chen
- Dept. of Chemistry
- Indiana University
- Indiana 47405
- USA
| | - Iyad S. Ali
- Dept. of Chemistry
- Indiana University
- Indiana 47405
- USA
| | | | - Xuemei Zhou
- Dept. of Chemistry
- Indiana University
- Indiana 47405
- USA
| | - Eman Wasim
- Dept. of Chemistry
- Indiana University
- Indiana 47405
- USA
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Chen L, Ali IS, Tait SL. Bidentate N‐based Ligands for Highly Reusable, Ligand‐coordinated, Supported Pt Hydrosilylation Catalysts. ChemCatChem 2020. [DOI: 10.1002/cctc.202000085] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Linxiao Chen
- Department of Chemistry Indiana University Bloomington Bloomington IN 47401 USA
- Institute for Integrated Catalysis Pacific Northwest National Laboratory Richland WA 99352 USA
| | - Iyad S. Ali
- Department of Chemistry Indiana University Bloomington Bloomington IN 47401 USA
| | - Steven L. Tait
- Department of Chemistry Indiana University Bloomington Bloomington IN 47401 USA
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