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离子电池及其材料的碳足迹分布
Leopold Peiseler1,2,3, Vanessa Schenker4, Karin Schatzmann5,6
1Energy and Technology Policy Group, ETH Zurich; Clausiusstrasse 37, CH-8092, Zurich, Switzerland. pleopold@ethz.ch.
Nature communications
|November 28, 2024
概括
离子电池的碳足迹主要是由原材料采购驱动的,而不是生产地点. 和对排放产生重大影响,需要针对电池材料制定专注的脱碳化策略.
科学领域:
- 材料科学 材料科学 材料科学
- 环境科学 环境科学
- 电化学 电化学 电化学
背景情况:
- 离子电池对于减缓气候变化至关重要,但其碳足迹很大.
- 现有的碳足迹分析是分散的,经常忽视电池材料的影响.
- 需要全面了解电池材料采购对环境的影响.
研究的目的:
- 开发一种新的基于成本的方法来估计电池材料的碳足迹.
- 量化和比较不同离子电池化学品 (NMC811和LFP) 的碳足迹分布.
- 确定离子电池生产中碳排放的主要驱动因素.
主要方法:
- 基于采矿成本数据的,和的排放曲线估计.
- 材料排放曲线与区域化电池生产数据的整合.
- 计算NMC811和LFP电池的碳足迹分布 (第5,第50,第95个百分位数).
主要成果:
- 材料采购,特别是和,主导了离子电池的整体碳足迹.
- 与铁酸盐 (LFP) 电池 (54, 62, 69 kgCO2 kWh-1) 相比,--- (NMC811) 电池的碳足迹分布更高 (59, 74, 115 kgCO2 kWh-1),而-铁 (LFP) 电池的碳足迹分布更高 (54, 62, 69 kgCO2 kWh-1).
- 碳足迹的差异在很大程度上归因于提取关键电池材料对环境的影响.
结论:
- 在确定离子电池碳足迹时,材料采购比生产地点更为关键.
- 专注于和开采脱碳的有针对性的战略是必不可少的.
- 这项研究为评估电池碳足迹提供了精细的方法,以告知有效的气候政策.
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