Electrochemical production of silicon
Electrochemical production of silicon
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DOI：
10.1515/htmp-2022-0033
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发表时间：
2022-05-12
影响因子：
1.5
通讯作者：
Nohira, Toshiyuki
中科院分区：
文献类型：
--
作者：
Yasuda, Kouji;Nohira, Toshiyuki
硅太阳能电池是产生可再生能源的关键设备，以促进能源和环境领域。目前，用于太阳能电池的高纯度硅是通过西门子工艺进行商业生产的。该工艺基于氢还原和/或三氯硅烷气体的热分解。生产硅的电化学方法作为现有西门子方法的替代方法引起了极大的关注。因此，本文回顾了硅的电化学生产的不同科学研究，根据所采用的原理（电解精炼，电解沉积和固态还原）和电解质（熔融氧化物，氟化物，氯化物，氟化物-氯化物，离子液体[IL]和有机溶剂）对它们进行分类。讨论了各种电解液中电解生产硅的特点及其发展前景。
Silicon solar cells are crucial devices for generating renewable energy to promote the energy and environmental fields. Presently, high-purity silicon, which is employed in solar cells, is manufactured commercially via the Siemens process. This process is based on hydrogen reduction and/or the thermal decomposition of trichlorosilane gas. The electrochemical process of producing silicon has attracted enormous attention as an alternative to the existing Siemens process. Thus, this article reviews different scientific investigations of the electrochemical production of silicon by classifying them based on the employed principles (electrorefining, electrowinning, and solid-state reduction) and electrolytes (molten oxides, fluorides, chlorides, fluorides-chlorides, ionic liquids [ILs], and organic solvents). The features of the electrolytic production of silicon in each electrolyte, as well as the prospects, are discussed.