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Zhang M, Zou J, Yan Y, Li W, Dai Q, Li H, Shi Z, Zhang Z, Wang R, Qiu S. Adjustable nanoarchitectonics of N-doping Yolk-Shell carbon spheres via "Pyrolysis-Capture" method for High-Performance supercapacitor. J Colloid Interface Sci 2024; 674:686-694. [PMID: 38950467 DOI: 10.1016/j.jcis.2024.06.143] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2024] [Revised: 06/17/2024] [Accepted: 06/19/2024] [Indexed: 07/03/2024]
Abstract
The energy storage capacity of porous carbon materials is closely tied to their surface structure and chemical properties. However, developing an innovative and straightforward approach to synthesize yolk-shell carbon spheres (YCs) remains a great challenge till date. Herein, we prepared a series of porous nitrogen-doped yolk-shell carbon spheres (NYCs) via a "pyrolysis-capture" method. This method involves coating the resorcinol-formaldehyde (RF) resin sphere with a layer of compact silica shell induced by 2-methylimidazole (ME) catalysis to produce a confined nano-space. Based on the confined effect of compact silica shell, volatile gases emitted from the RF resin and ME during pyrolysis can not only diffuse into the pores of the RF resin but can also be captured to form an outer carbon shell. This results in the tunable structures of NYCs materials. As the pyrolysis temperature rises, the shell thickness of NYCs reduces, the pore size expands, the roughness increases, and the N/O content of surface elements is enhanced. Notably, as an electrode material used forsupercapacitors,the optimized NYCs-800 exhibits excellent performance with a capacitance of 301.2F g-1 at the current density of 1 A/g and outstanding cycling life stability of 96.1% after 10,000 cycles. These results signify that controlling the surface structure and chemical properties of NYCs materials is an effective approach for constructing advanced energy storage materials.
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Affiliation(s)
- Maosheng Zhang
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130012, China
| | - Jiayun Zou
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130012, China; Department of Chemistry, Zhejiang University, Zhejiang 310058, China
| | - Yan Yan
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130012, China
| | - Wenxiu Li
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130012, China
| | - Qiumei Dai
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130012, China
| | - Hui Li
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130012, China
| | - Zhiqiang Shi
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130012, China; School of Chemistry and Chemical Engineering, Yancheng Institute of Technology, Yancheng 224051, China.
| | - Zongtao Zhang
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130012, China
| | - Runwei Wang
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130012, China.
| | - Shilun Qiu
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130012, China
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Meng J, Tong Z, Sun H, Liu Y, Zeng S, Xu J, Xia Q, Pan Q, Dou S, Yu H. Metal-Free Boron/Phosphorus Co-Doped Nanoporous Carbon for Highly Efficient Benzyl Alcohol Oxidation. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2022; 9:e2200518. [PMID: 35411718 PMCID: PMC9189657 DOI: 10.1002/advs.202200518] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/26/2022] [Revised: 02/25/2022] [Indexed: 05/16/2023]
Abstract
An in-depth understanding of the electronic structures of catalytically active centers and their surrounding vicinity is key to clarifying the structure-activity relationship, and thus enabling the design and development of novel metal-free carbon-based materials with desired catalytic performance. In this study, boron atoms are introduced into phosphorus-doped nanoporous carbon via an efficient strategy, so that the resulting material delivers better catalytic performance. The doped B atoms alter the electronic structures of active sites and cause the adjacent C atoms to act as additional active sites that catalyze the reaction. The B/P co-doped nanoporous carbon shows remarkable catalytic performance for benzyl alcohol oxidation, achieving high yield (over 91% within 2 h) and selectivity (95%), as well as low activation energy (32.2 kJ mol-1 ). Moreover, both the conversion and selectivity remain above 90% after five reaction cycles. Density functional theory calculations indicate that the introduction of B to P-doped nanoporous carbon significantly increases the electron density at the Fermi level and that the oxidation of benzyl alcohol occurs via a different reaction pathway with a very low energy barrier. These findings provide important insights into the relationship between catalytic performance and electronic structure for the design of dual-doped metal-free carbon catalysts.
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Affiliation(s)
- Juan Meng
- Key Laboratory of Bio‐Based Material Science and Technology of Ministry of EducationNortheast Forestry UniversityHarbin150040China
| | - Zhihan Tong
- Key Laboratory of Bio‐Based Material Science and Technology of Ministry of EducationNortheast Forestry UniversityHarbin150040China
| | - Haixin Sun
- Key Laboratory of Bio‐Based Material Science and Technology of Ministry of EducationNortheast Forestry UniversityHarbin150040China
| | - Yongzhuang Liu
- Key Laboratory of Bio‐Based Material Science and Technology of Ministry of EducationNortheast Forestry UniversityHarbin150040China
| | - Suqing Zeng
- Key Laboratory of Bio‐Based Material Science and Technology of Ministry of EducationNortheast Forestry UniversityHarbin150040China
| | - Jianing Xu
- Key Laboratory of Bio‐Based Material Science and Technology of Ministry of EducationNortheast Forestry UniversityHarbin150040China
| | - Qinqin Xia
- Key Laboratory of Bio‐Based Material Science and Technology of Ministry of EducationNortheast Forestry UniversityHarbin150040China
| | - Qingjiang Pan
- Key Laboratory of Functional Inorganic Material ChemistrySchool of Chemistry and Materials ScienceHeilongjiang UniversityHarbin150080China
| | - Shuo Dou
- Key Laboratory of Bio‐Based Material Science and Technology of Ministry of EducationNortheast Forestry UniversityHarbin150040China
| | - Haipeng Yu
- Key Laboratory of Bio‐Based Material Science and Technology of Ministry of EducationNortheast Forestry UniversityHarbin150040China
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