KR20180098362A - 리튬 선택 투과막, 리튬 회수 장치, 리튬 회수 방법, 수소 제조 방법 - Google Patents
리튬 선택 투과막, 리튬 회수 장치, 리튬 회수 방법, 수소 제조 방법 Download PDFInfo
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Abstract
Description
도 2는 LLTO와, LLTO의 표면에 대한 산처리에 의해서 형성된 층(HLTO)의 X선 회절 결과이다.
도 3은 본 발명의 실시의 형태가 되는 Li 회수 장치를 전지 모드로 이용한 경우, 및 동일한 구성에서 Li 흡착층을 이용하지 않은 경우의 전류의 시간 변화를 측정한 결과이다.
도 4는 본 발명의 실시의 형태가 되는 Li 회수 장치를 전기투석 모드로 이용한 경우, 및 동일한 구성에서 Li 흡착층을 이용하지 않은 경우의 전류의 시간 변화를 측정한 결과이다.
도 5는 본 발명의 실시의 형태가 되는 Li 회수 장치를 전기투석 모드로 이용한 경우에서의 회수액 중의 Li, K, Na의 존재량의 시간 변화를 측정한 결과이다.
도 6은 본 발명의 실시의 형태가 되는 Li 회수 장치를 전기투석 모드로 이용한 경우에서의 원액 중의 Li, K, Na의 존재량의 시간 변화를 측정한 결과이다.
도 7은 본 발명의 실시의 형태가 되는 Li(이온) 회수 방법에서 이용되는 전기투석 장치의 구성을 나타내는 도면이다.
도 8a는 본 발명의 실시의 형태가 되는 선택 투과막의 변형예의 구조를 나타내는 단면도이다.
도 8b는 본 발명의 실시의 형태가 되는 선택 투과막의 변형예의 구조를 나타내는 단면도이다.
도 9는 본 발명의 실시의 형태가 되는 Li(이온) 회수 방법을 나타내는 플로차트이다.
2 전기투석 장치
8, 9 처리조
10, 110 선택 투과막(리튬 선택 투과막)
10A, 110A 선택 투과막 본체
10B, 110B Li 흡착층
11 제 1 전극
12 제 2 전극
21 양이온 교환막
22 부극
23 정극
50 Li 이온
51 Na 이온
70 양이온 교환막
80 초리튬 이온 전도체 입자
81 Li 흡착 물질 입자
100 원액
200 회수액
300 원재료액
400 처리액
Claims (16)
- 일방의 주면(主面)측으로부터 타방의 주면측을 향해 리튬(Li) 이온을 선택적으로 투과시키는 리튬 선택 투과막으로서,
리튬의 이온 전도체를 주체(主體)로 하여 구성된 선택 투과막 본체와,
상기 선택 투과막 본체에서의 상기 일방의 주면측의 표면에서 형성되고, 상기 리튬 이온을 선택적으로 흡착시키는 리튬 흡착층
을 구비하는 것을 특징으로 하는 리튬 선택 투과막. - 청구항 1에 있어서,
상기 이온 전도체는, (Lix, Lay)TiOz(여기서, x=3a-2b, y=2/3-a, z=3-b, 0<a≤1/6, 0≤b≤0.06, x>0)인 것을 특징으로 하는 리튬 선택 투과막. - 청구항 1 또는 청구항 2에 있어서,
상기 선택 투과막 본체는, 상기 이온 전도체를 주체로 하는 소결체인 것을 특징으로 하는 리튬 선택 투과막. - 청구항 1 또는 청구항 2에 있어서,
상기 선택 투과막 본체는, 상기 이온 전도체로 구성된 입자가 양이온 투과막을 통해서 결합되어 구성된 것을 특징으로 하는 리튬 선택 투과막. - 청구항 4에 있어서,
상기 양이온 투과막은 나피온(등록상표), 세레미온(등록상표), 또는 고분자화된 TFSI 음이온((CF3SO2)2N-)를 가지는 이온 액체로 구성된 것을 특징으로 하는 리튬 선택 투과막. - 청구항 3 내지 청구항 5 중 어느 한 항에 있어서,
상기 리튬 흡착층은 상기 선택 투과막 본체의 상기 일방의 주면측의 표면에 대한 산처리에 의해서 형성된 것을 특징으로 하는 리튬 선택 투과막. - 청구항 3 내지 청구항 5 중 어느 한 항에 있어서,
상기 리튬 흡착층은 상기 선택 투과막 본체와는 상이한 물질로 구성되고 입자상으로 된 리튬 흡착 물질 입자를 구비하는 것을 특징으로 하는 리튬 선택 투과막. - 청구항 7에 있어서,
상기 리튬 흡착 물질 입자는, 망간산리튬(Li1.5Mn2O4) 입자에 대해서 산처리를 수행함으로써 형성된 것을 특징으로 하는 리튬 선택 투과막. - 수용액이고 리튬을 포함하는 원액으로부터, 수용액인 회수액으로 리튬 이온을 이동시켜 리튬을 상기 회수액 중으로 회수하는 리튬 회수 장치로서,
상기 원액을 상기 일방의 주면측, 상기 회수액을 상기 타방의 측으로 하여 상기 원액과 상기 회수액을 구획하도록 설치된 청구항 6의 리튬 선택 투과막과,
상기 리튬 선택 투과막의 상기 일방의 주면측에 고정된 메쉬상의 제1 전극과,
상기 리튬 선택 투과막의 타방의 주면측에 고정된 메쉬상의 제2 전극
을 구비하는 것을 특징으로 하는 리튬 회수 장치. - 수용액이고 리튬을 포함하는 원액으로부터, 수용액인 회수액으로 리튬 이온을 이동시켜 리튬을 상기 회수액 중으로 회수하는 리튬 회수 장치로서,
상기 원액을 상기 일방의 주면측, 상기 회수액을 상기 타방의 측으로 하여 상기 원액과 상기 회수액을 구획하도록 설치된 청구항 7 또는 청구항 8의 리튬 선택 투과막과,
상기 리튬 선택 투과막의 상기 일방의 주면측에 고정된 메쉬상의 제1 전극과,
상기 리튬 선택 투과막의 타방의 주면측에 고정된 메쉬상의 제2 전극
을 구비하는 것을 특징으로 하는 리튬 회수 장치. - 리튬을 함유하는 비알칼리성의 수용액인 원재료액으로부터 리튬을 함유하는 알칼리성의 수용액인 처리액을 생성하는 PH 변환 공정과,
상기 PH 변환 공정 후의 상기 처리액을 상기 원액으로 하고, 청구항 9의 리튬 회수 장치를 이용해 상기 회수액 중에 리튬을 회수하는 회수 공정
을 구비하는 것을 특징으로 하는 리튬 회수 방법. - 청구항 11에 있어서,
상기 PH 변환 공정에서, 양이온 교환막을 경계로 하여 정전위측에 상기 원재료액, 부전위측에 수용액을 배치하여 전기투석 처리를 수행한 후의 상기 부전위측의 수용액을 상기 처리액으로 하는 것을 특징으로 하는 리튬 회수 방법. - 청구항 10의 리튬 회수 장치를 이용해 상기 원액으로부터 상기 회수액 중에 리튬을 회수하는 회수 공정을 구비하는 것을 특징으로 하는 리튬 회수 방법.
- 청구항 11 내지 청구항 13 중 어느 한 항에 있어서,
상기 제1 전극을 정측, 상기 제2 전극을 부측으로 하여 상기 제1 전극과 상기 제2 전극의 사이에 전압을 인가하는 것을 특징으로 하는 리튬 회수 방법. - 청구항 11 내지 청구항 14 중 어느 한 항에 있어서,
상기 회수 공정의 개시 전에서의 상기 회수액을 순수로 하고, 상기 회수 공정 후의 상기 회수액에 대해서 탄산 가스를 통과시킴으로써 탄산리튬을 생성하는 탄산리튬 생성 공정을 구비하는 것을 특징으로 하는 리튬 회수 방법. - 청구항 9 또는 청구항 10의 리튬 회수 장치에서, 상기 회수액을 순수로 하고, 상기 제1 전극을 정측, 상기 제2 전극을 부측으로 하여 상기 제1 전극과 상기 제2 전극의 사이에 전압을 인가함으로써 상기 회수액으로부터 수소를 발생시키는 것을 특징으로 하는 수소 제조 방법.
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| PCT/JP2017/002612 WO2017131051A1 (ja) | 2016-01-29 | 2017-01-26 | リチウム選択透過膜、リチウム回収装置、リチウム回収方法、水素製造方法 |
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| KR20200141653A (ko) * | 2019-06-11 | 2020-12-21 | 주식회사 셀젠 | 흡착재를 이용한 리튬의 고농도화 방법 |
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| AU2017212260A1 (en) | 2018-08-16 |
| US20190032230A1 (en) | 2019-01-31 |
| CL2018002018A1 (es) | 2018-08-31 |
| US10689766B2 (en) | 2020-06-23 |
| WO2017131051A1 (ja) | 2017-08-03 |
| JP2017131863A (ja) | 2017-08-03 |
| JP6818334B2 (ja) | 2021-01-20 |
| AU2017212260B2 (en) | 2019-09-12 |
| KR102064692B1 (ko) | 2020-01-08 |
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