Interfacial solar-driven steam and electricity co-generation using Hydrangea-like graphene by salt-assisted carbonization of waste polylactic acid  

作　　者：Huiyue Wang Xueying Wen Kuankuan Liu Qiuxuan Liu Guixin Hu Huajian Liu Yan She Ran Niu Tao Tang Jiang Gong 

机构地区：[1]Key Laboratory of Material Chemistry for Energy Conversion and Storage,Ministry of Education,Hubei Key Laboratory of Material Chemistry and Service Failure,Hubei Engineering Research Center for Biomaterials and Medical Protective Materials,Semiconductor Chemistry Center,School of Chemistry and Chemical Engineering,Huazhong University of Science and Technology,Wuhan,China [2]State Key Laboratory of Polymer Physics and Chemistry,Changchun Institute of Applied Chemistry,Chinese Academy of Sciences,Changchun,China

出　　处：《SusMat》2024年第6期51-64,共14页可持续发展材料(英文)

基　　金：National Natural Science Foundation of China,Grant/Award Number:52373099;Innovation and Talent Recruitment Base of New Energy Chemistry and Device,Grant/Award Number:B21003;HUST;Shiyanjia Lab。

摘　　要：The interfacial solar steam generation and water evaporation-driven power generation are regarded as promising strategies to address energy crisis.However,it remains challenging to construct low-cost evaporators for freshwater and electricity co-generation.Herein,we report a salt-assisted carbonization strategy of waste polylactic acid to prepare Hydrangea flower-like graphene and build a bi-functional graphene-based evaporator.The evaporator presents merits of good sunlight absorption,photo-to-thermal conversion property,water transport,good thermal management capability,and negatively charged pores for the continuous diffusion of ions.Hence,it achieves the evaporation rate of 3.0 kg m^(−2)h^(−1)and output voltage of 0.425 V,surpassing many advanced evaporators/generators.Molecular dynamics simulation result proves that more Na^(+)ions are attracted by functional groups,especially-COOH/C-OH,to promote Na^(+)selectivity in nanochannels.This work offers new opportunities to construct multifunctional evaporators for freshwater and electricity co-generation.

关 键 词：GRAPHENE polylactic acid solar evaporator solar-driven interfacial steam generation water evaporation-driven power generation 

分 类 号：TB3[一般工业技术—材料科学与工程]