<![CDATA[The adoption of electric vehicles has increased end-of-life lithium iron phosphate (LFP) batteries, exposing the limitations of conventional recycling methods that prioritize lithium while undervaluing iron (Fe) and phosphorus (P). This study develops an optimization framework for short-process hydrometallurgical technology to enable efficient recovery of lithium, iron, and phosphorus with high product purity. A Systematic Literature Review (SLR) following the PRISMA 2020 guidelines analyzed 20 eligible studies published between 2021 and 2025 from Scopus, Web of Science, and Google Scholar. The review identifies leaching agent type, temperature, reaction time, and oxidant selection as the key factors affecting recovery performance. Optimized processes achieve lithium recovery above 95%, while converting iron and phosphorus into battery-grade FePO₄ through closed-loop recovery, in-situ precipitation, and impurity removal. Overall, short-process hydrometallurgy offers a technically feasible and economically promising approach for sustainable, full-component battery recycling.]]>
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