초록

본 연구에서는 전산모사에 의한 분자제어를 통하여 리튬이온의 이동도(mobility) 향상, 이온성 액체 (Ionic liquid, IL)와 전극에서의 리튬이온 이동에 대한 해석을 수행하고, 고출력의 리튬이온 이차전지 적용을 위한 탄소 복합 무기나노 음극재료를 개발하고자 함
(출처 : 보고서 요약서 3P)

Abstract ▼

Ⅱ. Purpose of research

● The high-power characteristics of a Li-ion rechargeable battery must be achieved with the top priority for the development of eco-friendly electric vehicles. The atom-level mechanism on Li-ion mobility within the electrode should be elucidated for the efficient develo

Ⅱ. Purpose of research

● The high-power characteristics of a Li-ion rechargeable battery must be achieved with the top priority for the development of eco-friendly electric vehicles. The atom-level mechanism on Li-ion mobility within the electrode should be elucidated for the efficient development of new materials that show high-power characteristics. In this study, we aim to enhance the Li-ion mobility of nano inorganic-carbon composite anode materials and to understand the Li-ion movement at the interface between anode and ionic liquid electrolyte through atomistic simulations. Our goal is to implement high-power lithium-ion rechargeable cells with new materials based on solid theoretical grounds. (Discharge capacity: > 600 mAh/g, Cycle life: >90% at 100 cycles).

● Because graphite is the widely-used anode material in a Li-ion battery, high-density or high-capacity characteristics are difficult to be achieved, but high-power characteristic can be enhanced by increasing the Li-ion mobility.

● Hard carbons were found to have curvature, like a carbon nanotube, which opened a new way to store a large amount of Li ion. Therefore, we can achieve the high-power characteristics by adding a nano-size chemical compound, working as a catalyst. The implementation of high-energy density and optimizing of low crystallinity condition are also essential.

Ⅲ. Research contents and range

● In the first stage of this study, we will perform atomistic quantum and classical simulations for various inorganic metal-carbon nano-structures. Based on the molecular-level information, we will synthesize nano-material candidates for high-power Li-ion battery anodes.

● In the second stage, we will carry out kinetic studies on the mobility of Li-ion for the interface between ionic liquid electrolyte and carbon electrods, such as activated carbon, ultra-porous carbon, and graphene. Using the kinetic analysis data and molecule-level control, we will prepare upgraded carbon/inorganic nanocomposite for both high-power and high-density characteristics.
(Discharge capacity: 550 mAh/g, Cycle life: 85% at 100 cycles).

● In the third stage, to m545aximize the high-power characteristics of synthesized electrodes, we will introduce various catalysts within the anode. Ultimately, we will implement a fuel cell relevant for high-power industrial applications. To end this, reversible capacity, cycle life, and safety should be over the target speculations.
(Discharge capacity: > 600 mAh/g, Cycle life: >90% at 100 cycles).

Ⅴ. Expected contribution

● Obtain the core-technology of energy storage materials for "low carbon-emission growth technology"

● Energy technologies may resolve the environmental pollution and regional conflicts are directly related to the survival of the country, thus over the world many countries embarked on the development new technology. Korea, especially, is the lack of fossil resources, and renewable energy technologies with high efficiency are indispensable.

● Demand for lithium-ion batteries are expected to explosively grow further in future. Therefore, it is very important to develop high-power electrodes and secure related original technology.

● Currently we have the world's leading technology in ter field of shipbuilding, memory chips, LCD, securing original technogies will enable us to the world best even in the field of next-generation lithium-ion battery market over the world.

● Secure original technology on both the environmental problem and national competitiveness by developing superb carbon electrode

● The market of only secondary battery is now over 300,000 billion dollar and the whole market including another energy fields, automobile and aircraft industries is beyond imagination

● This technology will envision broad and important impacts on electrochemical systems such as supercapacitors, fuel cells, and biosensors as well as on high profit areas for future industry
(출처 : Summary 6P)

목차 Contents

• 표지 ... 1제 출 문 ... 2보고서 요약서 ... 3요 약 문 ... 4Summary ... 6CONTENTS ... 8목차 ... 9제1장 연구개발과제의 개요 ... 10 제1절 연구 목표 및 세부내용에 대한 기술 ... 10 제2절 단계·연차別 세부 내용 ... 11 제3절 단계·연차別 연구개발의 추진전략 및 방법 ... 14제2장 국내외 기술개발 현황 ... 18 제1절 1단계, 2010∼2012年 기술개발 현황 ... 18 제2절 2, 3단계, 2012∼2016年 기술개발 현황 ... 20제3장 연구개발수행 내용 및 결과 ... 24 제1절 진행현황 요약 ... 24 제2절 연구개발 수행 내용 및 결과 ... 25 제3절 연구개발 성과 ... 76제4장 목표달성도 및 관련분야에의 기여도 ... 77 제1절 목표달성도에 대한 기술 ... 77 제2절 관련분야에의 기여도에 대한 기술 ... 78제5장 연구개발성과의 활용 계획 ... 79 제1절 활용계획 세부내용 ... 79제6장 연구개발과정에서 수집한 해외과학기술정보 ... 81제7장 연구시설·장비 현황 ... 82제8장 참고문헌 ... 83끝페이지 ... 83