Jia Yi, Jinsong Hu, Cheng Gong, Qilong Liu and Wentuan Bi
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引用次数: 0
摘要
2-羟基膦酸（HPAA）通过反应钝化机制从Al箔上剥离废LiFePO4阴极，得到超高纯度的产品，便于后续升级。作为概念验证，从锂提取的FePO4渣中制备的FexP催化剂在过电位仅为88 mV的情况下，析氢电流密度为10 mA cm−2。
Reaction-passivation-driven delamination of spent LiFePO4 cathodes and their upgrading to highly efficient catalysts for hydrogen evolution†
2-Hydroxyphosphonic acid (HPAA) was demonstrated to delaminate spent LiFePO4 cathodes from Al foil via a reaction-passivation mechanism, resulting in ultra-high-purity products and facilitating subsequent upgrading. As a proof of concept, FexP catalysts prepared from lithium-extracted FePO4 slag deliver a hydrogen evolution current density of 10 mA cm−2 at an overpotential of only 88 mV.
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