RISS 학술연구정보서비스

검색
다국어 입력

http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.

변환된 중국어를 복사하여 사용하시면 됩니다.

예시)
  • 中文 을 입력하시려면 zhongwen을 입력하시고 space를누르시면됩니다.
  • 北京 을 입력하시려면 beijing을 입력하시고 space를 누르시면 됩니다.
닫기
    인기검색어 순위 펼치기

    RISS 인기검색어

      SCI SCIE SCOPUS

      Effect of Lithium in Transition Metal Layers of Ni-Rich Cathode Materials on Electrochemical Properties

      한글로보기
      • 내보내기
      • 내책장담기
      • 공유하기
      • 오류접수

      부가정보

      다국어 초록 (Multilingual Abstract)

      <P>Li was incorporated into transition metal layers of Ni-rich Li[Ni<SUB>0.95</SUB>Co<SUB>0.05</SUB>]O<SUB>2</SUB> by formation of a solid solution with Li<SUB>2</SUB>MnO<SUB>3</SUB> (l...

      <P>Li was incorporated into transition metal layers of Ni-rich Li[Ni<SUB>0.95</SUB>Co<SUB>0.05</SUB>]O<SUB>2</SUB> by formation of a solid solution with Li<SUB>2</SUB>MnO<SUB>3</SUB> (layer notation: Li[Li<SUB>0.33</SUB>Mn<SUB>0.67</SUB>]O<SUB>2</SUB>), which can be denoted as (1-<I>x</I>)Li[Ni<SUB>0.95</SUB>Co<SUB>0.05</SUB>]O<SUB>2</SUB> – <I>x</I>Li[Li<SUB>0.33</SUB>Mn<SUB>0.67</SUB>]O<SUB>2</SUB>, to understand the effect of Li on the structure, electrochemistry and thermal characteristic of the cathode. Structural analysis data obtained by Rietveld refinement of X-ray diffraction data indicate that the additional Li can be found in the transition metal layers of (1-<I>x</I>)Li[Ni<SUB>0.95</SUB>Co<SUB>0.05</SUB>]O<SUB>2</SUB> – <I>x</I>Li[Li<SUB>0.33</SUB>Mn<SUB>0.67</SUB>]O<SUB>2</SUB>. An interesting feature is that the average oxidation states of Ni and Mn are 3+ and 4+, respectively, for (1-<I>x</I>)Li[Ni<SUB>0.95</SUB>Co<SUB>0.05</SUB>]O<SUB>2</SUB> – <I>x</I>Li[Li<SUB>0.33</SUB>Mn<SUB>0.67</SUB>]O<SUB>2</SUB> as demonstrated by X-ray absorption study. The first discharge capacity was approximately 217 mAh g<SUP>−1</SUP>, and the resulting retention was above 90% for 0.9Li[Ni<SUB>0.95</SUB>Co<SUB>0.05</SUB>]O<SUB>2</SUB> – 0.1Li[Li<SUB>0.33</SUB>Mn<SUB>0.67</SUB>]O<SUB>2</SUB> (Li[Li<SUB>0.033</SUB>Ni<SUB>0.855</SUB>Co<SUB>0.045</SUB>Mn<SUB>0.067</SUB>]O<SUB>2</SUB>) in the range of 2.7 to 4.5 V for 100 cycles, which is a surprising result for Ni-rich compounds. Moreover, the thermal stability of (1-<I>x</I>)Li[Ni<SUB>0.95</SUB>Co<SUB>0.05</SUB>]O<SUB>2</SUB> – <I>x</I>Li[Li<SUB>0.33</SUB>Mn<SUB>0.67</SUB>]O<SUB>2</SUB> was significantly improved over the cathodes with identical Ni fraction. These results highlight the role of tetravalent Mn ions, even in small amounts, in stabilizing the electrochemical performances and thermal properties in the Ni-rich layer cathodes.</P>

      더보기

      분석정보

      View

      상세정보조회

      0

      Usage

      원문다운로드

      0

      대출신청

      0

      복사신청

      0

      EDDS신청

      0

      동일 주제 내 활용도 TOP

      더보기

      주제

      연도별 연구동향

      연도별 활용동향

      연관논문

      연구자 네트워크맵

      공동연구자 (7)

      유사연구자 (20) 활용도상위20명

      이 자료와 함께 이용한 RISS 자료

      나만을 위한 추천자료

      해외이동버튼