Extensive research is being carried out on Ni-rich Li(NixCoyMn1-x-y)O2 (NCM) due to the growing demand for electric vehicles and reduced cost. In particular, Ni-rich Li(NixCoyMn1-x-y-zAlz)O2 (NCMA) is attracting great attention as a promising candidate for the rapid development of Co-free but electrochemically more stable cathodes. Al, an inactive element in the structure, helps to improve structural stability and is also used as a doping element to improve cycle capability in Ni-rich NCM. In this study, NCMA was successfully synthesized with the desired composition by direct coprecipitation. Boron and tin were also used as dopants to improve the battery performance. Macro- and microstructures in the cathodes were examined by microscopy and X-ray diffraction. While Sn was not successfully doped into NCMA, boron could be doped into NCMA, leading to changes in its physicochemical properties. NCMA doped with boron revealed substantially improved electrochemical properties in terms of capacity retention and rate capability compared to the undoped NCMA.

Abstract
1. 서 론
2. 실험 방법
3. 결과 및 고찰
4. 결 론
Acknowledgement
References

• 전형권(충남대학교 신소재공학과) | Hyungkwon Jeon (Chungnam National University, 99, Daehak-ro, Yuseong-gu, Daejeon, Republic of Korea)
• 홍순현(충남대학교 신소재공학과) | Soonhyun Hong (Chungnam National University, 99, Daehak-ro, Yuseong-gu, Daejeon, Republic of Korea)
• 김민정(충남대학교 신소재공학과) | Minjeong Kim (Chungnam National University, 99, Daehak-ro, Yuseong-gu, Daejeon, Republic of Korea)
• 구자훈(충남대학교 신소재공학과) | Jahun Koo (Chungnam National University, 99, Daehak-ro, Yuseong-gu, Daejeon, Republic of Korea)
• 이희상(충남대학교 신소재공학과) | Heesang Lee (Chungnam National University, 99, Daehak-ro, Yuseong-gu, Daejeon, Republic of Korea)
• 최규석(구미전자정보기술원) | Gyuseok Choi (Gumi Electronic and Information Technology Research Institute, Gumi, Gyeongbuk, 39171, Republic of Korea) Corresponding author
• 김천중(충남대학교 신소재공학과) | Chunjoong Kim (Chungnam National University, 99, Daehak-ro, Yuseong-gu, Daejeon, Republic of Korea) Corresponding author