Synthesis of Li_1.6[MnM]_1.6O₄(M=Cu, Ni, Co, Fe) and Their Physicochemical Properties as a New Precursor for Lithium Adsorbent
Synthesis of Li_1.6[MnM]_1.6O₄(M=Cu, Ni, Co, Fe) and Their Physicochemical Properties as a New Precursor for Lithium Adsorbent
김양수(한국기초과학지원연구원); 문원진(한국기초과학지원연구원); 정순기(순천향대학교); 원대희(순천대학교); 이상로((주)KFNET); 김병규(한국지질자원연구원); 정강섭(한국지질자원연구원)
12권 10호, 4660~4665쪽
초록
New precursors as a Li adsorbent, Li_1.6(MnM)_1.6O₄(M=Cu, Ni, Co, Fe), were synthesized by hydrothermal method and their physicochemical properties were discussed. XRD and HRTEM results revealed that the original spinel structure was stabilized by cobalt-doping while Cu-, Ni- and Fe-doping led to structural changes. Such a structural stabilization by Cobalt-doping was maintained after lithium leaching by acid treatment. Li absorption efficiency from seawater was significantly enhanced by using the Cobalt-doped spinel manganese oxide, Li_1.6[MnCo]_1.6O₄, compared to the commercially available Li_1.33Mn_1.67O₄; the adsorbed amount of Li from 1g-adsorbent was 35 and 16 mg by Li_1.6[MnCo]_1.6O₄, and Li_1.33Mn_1.67O₄, respectively.
Abstract
New precursors as a Li adsorbent, Li_1.6(MnM)_1.6O₄(M=Cu, Ni, Co, Fe), were synthesized by hydrothermal method and their physicochemical properties were discussed. XRD and HRTEM results revealed that the original spinel structure was stabilized by cobalt-doping while Cu-, Ni- and Fe-doping led to structural changes. Such a structural stabilization by Cobalt-doping was maintained after lithium leaching by acid treatment. Li absorption efficiency from seawater was significantly enhanced by using the Cobalt-doped spinel manganese oxide, Li_1.6[MnCo]_1.6O₄, compared to the commercially available Li_1.33Mn_1.67O₄; the adsorbed amount of Li from 1g-adsorbent was 35 and 16 mg by Li_1.6[MnCo]_1.6O₄, and Li_1.33Mn_1.67O₄, respectively.
- 발행기관:
- 한국산학기술학회
- 분류:
- 공학일반