Recycling Graphite from Spent Lithium Batteries for Efficient Solar‐Driven Interfacial Evaporation to Obtain Clean Water

Author:

Han Sheng‐Jie1,Xu Lei1,Liu Pan1,Wu Jia‐Li1,Labiadh Lazhar1,Fu Ming‐Lai1ORCID,Yuan Baoling12

Affiliation:

1. Xiamen Key Laboratory of Municipal and Industrial Solid Waste Utilization and Pollution Control College of Civil Engineering Huaqiao University Xiamen Fujian 361021 P. R. China

2. Key Laboratory of Songliao Aquatic Environment Ministry of Education Jilin Jianzhu University Changchun 130118 P. R. China

Abstract

AbstractSolar‐driven interfacial evaporation technology is regarded as an attracting sustainable strategy for obtaining portable water from seawater and wastewater, and the recycle of waste materials to fabricate efficient photothermal materials as evaporator to efficiently utilize solar energy is very critical, but still difficult. To this purpose, graphite recovered from spent lithium‐ion batteries (SLIBs) was realized using a simple acid leaching method, and a reconstructed graphite‐based porous hydrogel (RG‐PH) was subsequently fabricated by crosslinking foaming method. The incorporation of reconstructed graphite (RG) improves the mechanical characteristics of hydrogels and the light absorption performance significantly. The evaporation rate of optimized RG‐PH can constantly reach 3.4278 kg m−2 h−1 for desalination under a one solar irradiation, and it also showed the excellent salt resistance in various salty water. Moreover, RG‐PH has a strong elimination of a variety of organic contaminants in wastewater, including the typical volatile organic compound of phenol. This research shows the potential application of flexible and durable solar evaporators made from waste materials in purifying seawater and wastewater, not only contributing to carbon neutrality by recycling graphite from SLIBs, but also ensuring the cost‐effectiveness harvest of solar energy for constantly obtaining clean water.

Funder

National Natural Science Foundation of China

Publisher

Wiley

Subject

General Energy,General Materials Science,General Chemical Engineering,Environmental Chemistry

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