최소 단어 이상 선택하여야 합니다.
최대 10 단어까지만 선택 가능합니다.
다음과 같은 기능을 한번의 로그인으로 사용 할 수 있습니다.
NTIS 바로가기다음과 같은 기능을 한번의 로그인으로 사용 할 수 있습니다.
DataON 바로가기다음과 같은 기능을 한번의 로그인으로 사용 할 수 있습니다.
Edison 바로가기다음과 같은 기능을 한번의 로그인으로 사용 할 수 있습니다.
Kafe 바로가기주관연구기관 | 한국과학기술원 Korea Advanced Institute of Science and Technology |
---|---|
연구책임자 | 김도경 |
참여연구자 | 정유성 , 곽기정 , 김동석 , 김유리 , 박준호 , 이수현 , 페트라 |
보고서유형 | 최종보고서 |
발행국가 | 대한민국 |
언어 | 한국어 |
발행년월 | 2016-10 |
과제시작연도 | 2015 |
주관부처 | 미래창조과학부 Ministry of Science, ICT and Future Planning |
등록번호 | TRKO201700009424 |
과제고유번호 | 1711029593 |
사업명 | 기후변화대응기술개발 |
DB 구축일자 | 2017-10-28 |
키워드 | 이차전지.나노재료.수용액전해질.전극소재.나트륨 이차전지.단전지.Rechargeable batteries.Nanomaterials.Aqueous electrolytes.Electrode materials.Sodium-ion batteries.Full cell. |
DOI | https://doi.org/10.23000/TRKO201700009424 |
본 세부과제의 연구는 최종적으로 수용액 전해질을 이용한 나트륨(Na) 이온 전지 이차 전지 full cell을 구현하기 위하여 양극 및 음극 소재를 개발할 뿐만 아니라 수용액 전해질 이차전지용 전극 소재를 이론적 접근법으로 설계하고 작동 메커니즘을 연구하는데 목표를 두었으며 성과는 아래와 같다.
- 리튬/나트륨 이온 전지 양/음극 소재 개발, 탄소나노구조체 합성, 그리고 구조적 및 전기화학적 특성 분석
- 수계 나트륨 이온 전지에서 이론 및 computational 계산을 기반으로 한 계산 연구, 모델 및 함수 구축, 그
본 세부과제의 연구는 최종적으로 수용액 전해질을 이용한 나트륨(Na) 이온 전지 이차 전지 full cell을 구현하기 위하여 양극 및 음극 소재를 개발할 뿐만 아니라 수용액 전해질 이차전지용 전극 소재를 이론적 접근법으로 설계하고 작동 메커니즘을 연구하는데 목표를 두었으며 성과는 아래와 같다.
- 리튬/나트륨 이온 전지 양/음극 소재 개발, 탄소나노구조체 합성, 그리고 구조적 및 전기화학적 특성 분석
- 수계 나트륨 이온 전지에서 이론 및 computational 계산을 기반으로 한 계산 연구, 모델 및 함수 구축, 그리고 실험과 연계한 나트륨 이온 전지 전극 물질 개발
- 수계 나트륨 이온 전지 full cell 구현을 위한 전해질 최적화, 수계 전해질용 전극 물질 개발, 수용액에서의 확산 거동과 계면 등에 대한 연구, 그리고 pouch cell type의 full cell 구현
(출처 : 보고서 요약서 3P)
Ⅱ. Importance and aim of the research
The final goal of this research is to (i)investigate and develop electrode materials for sodium-ion batteries with aqueous electrolytes and (ii)design electrode materials and study its mechanism in rechargeable battery system with aqueous electrolytes by theo
Ⅱ. Importance and aim of the research
The final goal of this research is to (i)investigate and develop electrode materials for sodium-ion batteries with aqueous electrolytes and (ii)design electrode materials and study its mechanism in rechargeable battery system with aqueous electrolytes by theoretical approach.
- Lithium-ion batteries use non-aqueous, organic electrolytes that are prone to safety issues. Also the increasing demand of lithium-ion batteries resulted increasing price of the lithium source, which is now a major obstacle of wider application of lithium-ion batteries.
- The aqueous electrolytes are safer, more economical, and more environmental friendly than organic electrolytes that are currently used.
- Since the water is spontaneously decomposed into oxygen gas and hydrogen gas under a voltage higher than 1.2V, there is inherent energy density limitation of batteries with aqueous electrolytes. The 1.2V limitation is much lower than 4.5V voltage range of organic electrolytes. Therefore, the development of proper electrode materials, mechanism study of electrochemical reaction within aqueous electrolytes, and study for large scale implementation is essential.
- Computational modeling and calculation in materials design is advantageous because precise control of specific variable is possible. Computational approach will provide fundumental understanding of experimental results and guide material development.
Ⅲ. Content and scope of the project
[ Stage 1 ]
- Investigation on status and technologies of rechargeable secondary batteries with aqueous elecrolytes
- Synthesis, structure analysis, and performances of electrode materials(oxide, pyrophosphate, polyanion type) of lithium and sodium-ion batteries
- Comparison between aqueous and non-aqueous electrolytes, study on diffusion behaviour in aqueous electolytes by EIS analysis, and study on interaction betweenwater molecule and alkali ions
- Study on model for occupancy calculation, development of density function, and interface calculation by theoretical computation method assisted by experimental results
[ Stage 2 ]
- Improving rate performance of new electrode materials for sodium ion baterries by synthesizing carbon composite with polyanion and/or pyrophospate type materials
- Study on kinetics of pyrophsphate type electrode materials and development of density function theory approached by semiempirical method based on computational calculation and experimental results
- Formation of non-aqueous sodium ion battery full cell and analysis of its performance
[ Stage 3 ]
- Optimization of aqueous electrolytes by controlling salt type, concentration, and additives in the aqueous electrolyte
- Formation of beaker cell type full cell and pouch cell type full cell using aqueous electrolytes
- Modeling and peformance study of birnessite type metal oxide with crystal water based on computational calculation
- Screening of materials with MXene structure as anode material of soidum ion batteries
Ⅳ. Accomplishments
When the project was starting, there were very few domestic researches on sodium ion battery, especially about aqueous sodium ion battery. But through this project, this research team conducted systematic research on aqueous sodium ion batteries and developed core technologies. Today, there are much more researches on sodium ion batteries and aqeous electrolytes. The above accomplishments have led the development of the domestic researches on sodium ion battery from the early stage and will be a foundation of future achievements on sodium ion battery researches.
Ⅴ. Future plan and application
The research have focused on developing core technologies for economical, environmental friendly, and safe aqueous sodium-ion batteries. By overcoming the limitation of non-aqueous electrolytes by utilizing aqueous electrolytes, it is believed that the results will promote environmental green energy industry and will be able to overcome disadvantages of lithium-ion batteries such as safety issues, high cost, and difficulties in large scale application.
- The research team successfully demonstrated aqueous sodium ion battery full cell, which is a major goal of this project. The multiple full cell systems that were studied through this project also showed long cycle life and good rate capability. This confirms the potential of aqueous sodium ion batteries, and the results of full cell analysis will be a baseline data for future studies on aqueous sodium ion batteries.
- The focus of this project, the development of aqueous-electrolyte-based rechargeable battery system, can be a possible solution to overcome limitations of current organic electrolytes. Therefore if the rechargeable battery system with aqueous electrolytes are successfully commercialized in the future, it will be possible to apply them in the energy storage system of renewable energies.
- The achievements of the project - synthesis technology of nano-structured electrode materials, in-situ analysis technique of electrode and rechargeable batteries, synthesis technology of carbon nanocomposite to enhance rate performance, optimized aqueous electrolytes with controlled voltage window, assembly method of sodium ion battery full cell and pouch cell with aqueous electrolytes, and developed mechanism/model/functions related to energy storage materials by theory based computational calculation - is a core technology of energy storage materials and will have a immense effects on other energy related materials and application fields.
(출처 : SUMMARY 6P)
과제명(ProjectTitle) : | - |
---|---|
연구책임자(Manager) : | - |
과제기간(DetailSeriesProject) : | - |
총연구비 (DetailSeriesProject) : | - |
키워드(keyword) : | - |
과제수행기간(LeadAgency) : | - |
연구목표(Goal) : | - |
연구내용(Abstract) : | - |
기대효과(Effect) : | - |
Copyright KISTI. All Rights Reserved.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.