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Robust and Elastic Bioinspired MXene-Coated Foams with Enhanced Energy Storage and Conversion Capabilities

文献类型： 外文期刊

作者： Jiang, Degang 1 ; Bacal, Christine Jurene O. 1 ; Usman, Ken Aldren S. 1 ; Zhang, Jizhen 1 ; Qin, Si 1 ; Hegh, Dylan 1 ; Lei, Weiwei 1 ; Liu, Jingquan 3 ; Razal, Joselito M. 1 ;

作者机构： 1.Deakin Univ, Inst Frontier Mat, Geelong Waurn Ponds Campus, Geelong, Vic 3216, Australia

2.Chinese Acad Trop Agr Sci CATAS, Agr Prod Proc Res Inst, Hainan Prov Key Lab Nat Rubber Proc, Zhanjiang 524001, Peoples R China

3.Qingdao Univ, Inst Graphene Appl Technol Innovat, Coll Mat Sci & Engn, Ningxia Rd 308, Qingdao 266071, Peoples R China

关键词： compressible supercapacitor; elastic foam; MXene foam; PEI; PDA coating; steam generation

期刊名称：ADVANCED MATERIALS TECHNOLOGIES （ 影响因子：6.8； 五年影响因子：7.6 ）

ISSN： 2365-709X

年卷期： 2023 年 8 卷 8 期

页码：

收录情况： SCI

摘要： Constructing highly porous structures using Ti3C2Tx MXene provides a promising strategy toward achieving low density, high specific surface area, and shorter ion/molecule transport paths. However, the weak MXene-MXene or MXene-substrate interactions hinder the development of ultra-robust and elastic MXene-based architectures. To address this issue, a bio-inspired strategy is developed to effectively adhere the MXene nanosheets onto melamine foam via covalent and hydrogen bonding interactions through polyethyleneimine/polydopamine-modification. The enhanced interactions contribute to high MXene loading (approximate to 94 wt.%) and reversible compressibility even after 10 000 compression/release cycles at 80% strain. The compressible supercapacitor device assembled from this foam exhibits high energy storage capability (119 F g(-1) at 2 mV s(-1)) with capacitance retention of approximate to 93% after 1000 compression/release cycles at 50% strain. Moreover, the presence of polydopamine and MXene enable the absorption of light in the UV-vis and near-IR regions, respectively, inducing photothermal conversion functionality, with an evaporation rate of approximate to 1.5 kg m(-2) h(-1) and approximate to 89% solar evaporation efficiency under one sun illumination. It is envisaged that this bio-inspired chemical modification offers a versatile strategy for the assembly of MXene nanosheets onto different substrates for various applications, such as electromagnetic interference shielding, energy storage, and conversion.

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