文献类型：期刊文献

英文题名：Guided Heterostructure Growth of CoFe LDH on Ti₃C₂T_x MXene for Durably High Oxygen Evolution Activity

作者：Sheng, Jiali[1] Kang, Jiahui[1] Jiang, Pan[1,2] Meinander, Kristoffer[3] Hong, Xiaodan[1] Jiang, Hua[1] Nonappa, Olli[1] Ikkala, Olli[1] Komsa, Hannu-Pekka[4] Peng, Bo[1,5] Lv, Zhong-Peng[1]

第一作者：Sheng, Jiali

通信作者：Peng, B[1];Lv, ZP[1];Komsa, HP[2];Peng, B[3]

机构：[1]Aalto Univ, Dept Appl Phys, FIN-02150 Espoo, Finland;[2]Chinese Acad Forestry, Res Inst Wood Ind, Xiangshan Rd, Beijing 100091, Peoples R China;[3]Aalto Univ, Dept Bioprod & Biosyst, FIN-02150 Espoo, Finland; Tampere Univ, Fac Engn & Nat Sci, FI-33101 Tampere, Finland;[4]Univ Oulu, Fac Informat Technol & Elect Engn, Microelect Res Unit, FIN-90014 Oulu, Finland;[5]Fudan Univ, Adv Coating Res Ctr, Dept Mat Sci, Minist Educ China, Shanghai 200433, Peoples R China

年份：2025

卷号：21

期号：3

外文期刊名：SMALL

收录：;EI(收录号：20243717026209);Scopus(收录号：2-s2.0-85203398252);WOS:【SCI-EXPANDED(收录号:WOS:001309365300001)】；

基金：The authors acknowledge funding from the Research Council of Finland (Z.-P.L.: No. 330214; B.P.: No. 321443, 328942, and N.N.: No. 352900; O.I.: Center of Excellence Program in Life-inspired Hybrid Materials, LIBER, No. 346108), China Scholarship Council (J.S.: No. 202008440311, J.K.: 202008440308). The authors also acknowledge Jani Sainio, Alexey P. Tsapenko, and Ville Liljestroem for XPS, UPS, and XRD measurements, respectively. The facilities and technical support were provided by Aalto University Ota Nano-Nanomicroscopy Center, Bio economy and Raw Matters Research Infrastructures, and Photonics Research and Innovation (PREIN) flagship. The authors acknowledged CSC - IT Center for Science, Finland, for computational resources.

语种：英文

外文关键词：guided growth; layered double hydroxides; modelling; oxygen evolution reaction; Ti3C2Tx MXene

摘要：Heterostructures of layered double hydroxides (LDHs) and MXenes have shown great promise for oxygen evolution reaction (OER) catalysts, owing to their complementary physical properties. Coupling LDHs with MXenes can potentially enhance their conductivity, stability, and OER activity. In this work, a scalable and straightforward in situ guided growth of CoFeLDH on Ti3C2Tx is introduced, where the surface chemistry of Ti3C2Tx dominates the resulting heterostructures, allowing tunable crystal domain sizes of LDHs. Combined simulation results of Monte Carlo and density functional theory (DFT) validate this guided growth mechanism. Through this way, the optimized heterostructures allow the highest OER activity of the overpotential = 301 mV and Tafel slope = 43 mV dec(-1) at 10 mA cm(-2), and a considerably durable stability of 0.1% decay over 200 h use, remarkably outperforming all reported LDHs-MXenes materials. DFT calculations indicate that the charge transfer in heterostructures can decrease the rate-limiting energy barrier for OER, facilitating OER activity. The combined experimental and theoretical efforts identify the participation role of MXene in heterostructures for OER reactions, providing insights into designing advanced heterostructures for robust OER electrocatalysis.