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Upcycling Industrial Wastewater to Three-Dimensional Porous Cu4(OH)6FCl Nanosheets as Anode for High-Performance
Xianggang Zhou1, Dan Yang1, Hechen Sun1
1Key Laboratory of Polyoxometalate and Reticular Material Chemistry of Ministry of Education, Faculty of Chemistry, Northeast Normal University, Changchun 130024, China.
Abstract:
With the vigorous development of artificial intelligence and the semiconductor industry, the treatment of a mass of copper- and fluorine-containing industrial wastewater poses a challenge to the sustainable development of human society and the environment. This study presents a scalable synthesis of 3D porous Cu4(OH)6FCl nanosheets via the self-assembly of Cu2+, F-, and Cl- from industrial wastewater. Benefiting from the unique 3D porous nanosheet structure that facilitates the extensive exposure of redox active sites (∼92.7%), the Cu4(OH)6FCl anode in a lithium-ion battery delivers remarkable reversible capacity (958 mAh g-1 at 0.04 A g-1) and exhibits exceptional cycling stability (no capacity decay after 1000 cycles at 0.64 A g-1), significantly outperforming its bare CuF2 and CuCl2 counterparts. This research presents a novel strategy for upcycling industrial wastewater to high-performance anode materials in a mild coprecipitation manner, promoting the unity of environmental, social, and economic benefits.
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