State Analysis of Positive Electrode Active Materials and Compounds in Black Mass

User Benefits

- The distribution of formation products by heat treatment of various components contained in black mass can be confirmed. - The types of positive electrode active materials contained in black mass can be identified by using phase analysis and state analysis. - The states of compounds contained in black mass can be inferred by state analysis.

Introduction

In recent years, use of lithium-ion batteries (LIBs) has increased as a result of widespread adoption of smart devices and electrification of automobiles with the aim of achieving carbon neutrality. While the materials used in batteries are obtained from costly mineral resources, battery recycling also plays an important role in reducing the risks associated with the procurement of raw materials and the environmental impacts accompanying industrial wastes. In particular, the black mass obtained from used LIBs is a core raw material for recycling rare metals such as Li (lithium) and Co (cobalt), and an accurate evaluation of black mass quality is indispensable for enhancing the recovery rate and possibility of reuse. Understanding the metal content and the types and concentrations of impurities in black mass will contribute to optimization of the recycling process and stabilization of product quality. This article introduces a state analysis of microregions of the positive electrode mix contained in black mass using an EPMA electron probe microanalyzer (EPMA-8050G).

June 23, 2026 GMT