• This review systematically summarizes the source of electricity, the key choice of catalyst, and the potentiality of electrolyte for prospective hydrogen generation.

• Each section provides comprehensive overview, detailed comparison and obvious advantages in these system configurations.

• The problems of hydrogen generation from electrolytic water splitting and directions of next-generation green hydrogen in the future are discussed and outlooked.

中文翻译：

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废旧锂离子电池正极直接再生：从理论研究到生产实践

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  这篇综述系统地总结了电力来源、催化剂的关键选择以及电解液用​​于未来制氢的潜力。

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  每个部分都提供了这些系统配置的全面概述、详细比较和明显优势。

• 
  对电解水制氢存在的问题以及未来下一代绿氢的发展方向进行了讨论和展望。