Recycling of All-Solid-State Li-ion Batteries: A Case Study of the Separation of Individual Components Within a System Composed of LTO, LLZTO and NMC.

With the current global projection of over 130 million electric vehicles (EVs), there soon will be a need for battery waste management. Especially for all-solid-state lithium-ion batteries (lithium ASSBs), aspects of waste management and circular economy have not been addressed so far. Within such ASSBs, the use of solid-electrolytes like garnet-type Li6.5 La3 Zr1.5 Ta0.5 O12 (LLZTO) may shift focus on strategies to recover not only the transition metal elements but also elements like La/Zr/Ta. In this work, we present a two-step recycling approach using citric acid as the leaching agent to separate and recover the individual components of a model cell comprising of Li4 Ti5 O12 (LTO) anode, Li6.5 La3 Zr1.5 Ta0.5 O12 (LLZTO) garnet electrolyte and LiNi1/3 Mn1/3 Co1/3 O2 (NMC) cathode. We observe that by adjusting the concentration of citric acid, it was possible to separate the materials from each other without strong mixing of individual phases and also to maintain their principle performance characteristics. Thus, the process developed has a potential for upscaling and can guide towards considering separation capability of battery components in the development of lithium ASSBs.

Towards Recycling of LLZO Solid Electrolyte Exemplarily Performed on LFP/LLZO/LTO Cells.

All-solid-state lithium ion batteries (ASS-LIBs) are promising due to their safety and higher energy density as compared to that of conventional LIBs. Over the next few decades, tremendous amounts of spent ASS-LIBs will reach the end of their cycle life and would require recycling in order to address the waste management issue along with reduced exploitation of rare elements. So far, only very limited studies have been conducted on recycling of ASS-LIBS. Herein, we investigate the recycling of the Li7 La3 Zr2 O12 (LLZO) solid-state electrolyte in a LiFePO4 /LLZO/Li4 Ti5 O12 system using a hydrometallurgical approach. Our results show that different concentration of the leaching solutions can significantly influence the final product of the recycling process. However, it was possible to recover relatively pure La2 O3 and ZrO2 to re-synthesize the cubic LLZO phase, whose high purity was confirmed by XRD measurements.

Sexual abuse perpetrated by adult and juvenile females: an ultimate attempt to resolve a conflict associated with maternal identity.

OBJECTIVE: The purpose of this article is to report the descriptive and phenomenological aspects of adult females (AF) and juvenile females (JF) who sexually abuse children and adolescents. A major focus is to study the relational problems during childhood and adulthood of this specific population and how they echo the relational aspects of their own victimization. METHODOLOGY: Since 1992, clinical and evaluative data were collected from a sample of 13 AF and 15 JF who had committed sexual abuse. The subjects were evaluated in the program for adult and adolescent sex offenders at the outpatient clinic of the Centre de Psychiatrie Légale de Montréal (affiliated with the Institut Philippe Pinel de Montréal). The data were collected by a multidisciplinary team of clinicians: psychiatrists, psychologists, criminologists and sexologists. A team of two or three clinicians who utilized a standardized interview grid evaluated each subject. RESULTS: Mean age at the time of the evaluation was 36.2 years (SD=9.28) for the AF and 14.7 years (SD=1.39) for the JF. A considerable percentage of the sexual abuses occurred in an intra-familial context for both groups (92.3% of the AF; 53.3% of the JF). Half of the AF not only committed sexual but also physical abuse of their victims. In addition, the precocious and repetitive dimension of the sexual abuses perpetrated by 33.3% of the JF was noted. CONCLUSION: This descriptive study reports a set of problematic relationships and a history of victimization among AF and JF. The history of the relationship with their parents frequently revealed that for JF, the father was absent or not very involved and for AF the father was sexually and physically abusive. On the other hand, a disturbed mother-child relationship among both AF and JF sexual abusers highlights an important conflict.