2018英特爾ISEF學科最佳作品摘要：化學 | Best of Category Abstract: CHEMISTRY

Category: STEM國際競賽, 國際競賽 Date: 2019年8月31日下午5:38

獲獎作品基本信息

年份	2018
學科	化學 CHEMISTRY
學校	Little Rock Central High School
國家/州	AR，United States of America

獲獎作品名稱

Green Synthesis of Phosphorous, Nitrogen Co-Doped Carbon Materials from Renewable Resources for Supercapacitor Applications via Microwave Assisted Technique

獲獎作品摘要

We heavily depend on petroleum for energy production, petroleum-based polymer synthesis and the manufacturing of multiple important chemicals. More than 95% of the energy in the United States is still provided by fossil fuels, nuclear power and traditional hydropower. Based on the current pace of utilization and the rapid population growth, it is predicted that the remaining fossil fuel reserves are likely to deplete within the next few decades. Supercapacitors are gaining importance in energy storage applications due to their portability, long cycle lifetime, high energy density, and power density.
Fundamentally, the performance of these supercapacitors has a direct relationship to the properties of materials used in their development. The first research goal of this experiment was to utilize inexpensive natural resources such as Tannins, Tea, and Molasses as a precursor for carbon and dope them with heteroatoms to develop Phosphorous, Nitrogen co-doped carbon biomaterials for the development of supercapacitors. The second research goal was to use a microwave technique to synthesize the samples in a one-pot reaction.
The results suggested that the Tannin/Hexamine/Melamine/AP sample displayed the highest overall capacitance (183 F/g), with the highest surface area (724.75 m2/g), good pore diameter (3.02 nm), and a low amount of micropores (0.07 cm3/g) which all ultimately led to the best sample for the development of supercapacitors. Conversely, the Tea/PPA/melamine sample had a surface area of 129.07 m2/g, a poor pore diameter value (4.58 nm), and a micropore value of 0.02 cm3/g which made up a third of the total pore volume (0.08 cm3/g) which explains the lower capacitance values (18 F/g).

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ISEF 簡介

英特爾國際科學與工程大獎賽，簡稱 "ISEF"，由美國 Society for Science and the Public（科學和公共服務協會）主辦，英特爾公司冠名贊助，是全球規模最大、等級最高的中學生的科研科創賽事。ISEF 的學術活動學科包括了所有數學、自然科學、工程的全部領域和部分社會科學。ISEF 素有全球青少年科學學術活動的“世界杯”之美譽，旨在鼓勵學生團隊協作，開拓創新，長期專一深入地研究自己感興趣的課題。

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英特爾 ISEF 學術活動詳細介紹

英特爾 ISEF 全程指導方案

· 數學 · 物理 · 化學 · 生物 · 計算機 · 工程 ·

學科簡介：化學 CHEMISTRY

Studies exploring the science of the composition, structure, properties, and reactions of matter not involving biochemical systems.

Subcategories:

Analytical Chemistry?(ANC):?The study of the separation, identification, and quantification of the chemical components of materials.

Computational Chemistry?(COM):?A study that applies the discipline and techniques of computer science and mathematics to solve large and complex problems in Chemistry.

Environmental Chemistry?(ENV):?The study of chemical species in the natural environment, including the effects of human activities, such as the design of products and processes that reduce or eliminate the use or generation of hazardous substances.

Inorganic Chemistry?(INO):?The study of the properties and reactions of inorganic and organometallic compounds.

Materials Chemistry?(MAT):?The chemical study of the design, synthesis and properties of substances, including condensed phases (solids, liquids, polymers) and interfaces, with a useful or potentially useful function, such as catalysis or solar energy.

Organic Chemistry?(ORG):?The study of carbon-containing compounds, including hydrocarbons and their derivatives.

Physical Chemistry?(PHC):?The study of the fundamental physical basis of chemical systems and processes, including chemical kinetics, chemical thermodynamics, electrochemistry, photochemistry, spectroscopy, statistical mechanics and astro-chemistry.

Other?(OTH):?Studies that cannot be assigned to one of the above subcategories. If the project involves multiple subcategories, the principal subcategory should be chosen instead of Other.