Hierarchical porous carbon guided by constructing organic-inorganic interpenetrating polymer networks to facilitate performance of zinc hybrid supercapacitors  

作　　者：Ting Shi Ziyang Song Yaokang Lv Dazhang Zhu Ling Miao Lihua Gan Mingxian Liu 

机构地区：[1]Shanghai Key Lab of Chemical Assessment and Sustainability,School of Chemical Science and Engineering,Tongji University,Shanghai 200092,China [2]College of Chemical Engineering,Zhejiang University of Technology,Hangzhou 310014,China

出　　处：《Chinese Chemical Letters》2025年第1期561-567,共7页中国化学快报(英文版)

基　　金：financially supported by the National Natural Science Foundation of China(Nos.22272118,22172111,21905207,and 22309134);the Science and Technology Commission of Shanghai Municipality(Nos.22ZR1464100,20ZR1460300,and 19DZ2271500);China Postdoctoral Science Foundation(No.2022M712402);Shanghai Rising-Star Program(No.23YF1449200);Zhejiang Provincial Science and Technology Project(No.2022C01182);the Fundamental Research Funds for the Central Universities(Nos.22120210529 and 2023-3-YB-07)。

摘　　要：Customized design of well-defined cathode structures with abundant adsorption sites and rapid diffusion dynamics,holds great promise in filling capacity gap of carbonaceous cathodes towards high-performance Zn-ion hybrid supercapacitors(ZHC).Herein,we fabricate a series of dynamics-oriented hierarchical porous carbons derived from the unique organic-inorganic interpenetrating polymer networks.The interpenetrating polymer networks are obtained through physically knitting polyferric chloride(PFC)network into the highly crosslinked resorcinol-formaldehyde(RF)network.Instead of covalent bonding,physical interpenetrating force in such RF-PFC networks efficiently relieves the RF skeleton shrinkage upon pyrolysis.Meanwhile,the in-situ PFC network sacrifices as a structure-directing agent to suppress the macrophase separation,and correspondingly 3D hierarchical porous structure with plentiful ion-diffusion channels(pore volume of 1.35 cm^(3)/g)is generated in the representative HPC_(4) via nanospace occupation and swelling effect.Further removal of Fe fillers leaves behind a large accessible specific surface area of 1550 m^(2)/g for enhanced Zn-ion adsorption.When used as the cathode for ZHC,HPC_(4) demonstrates a remarkable electrochemical performance with a specific capacity of 215.1 mAh/g at 0.5 A/g and a high Zn^(2+)ion diffusion coefficient of 11.1×10^(-18)cm^(2)/s.The ZHC device yields 117.0 Wh/kg energy output at a power density of 272.1 W/kg,coupled with good cycle lifespan(100,000 cycles@10 A/g).This work inspires innovative insights to accelerate Zn diffusion dynamics by structure elaboration towards high-capacity cathode materials.

关 键 词：Carbonaceous cathode Interpenetrating polymer networks Zinc-ion hybrid supercapacitors Specific capacity Energy/power density 

分 类 号：TG1[金属学及工艺—金属学]