Kim, Dae-Hong Yu, Ju-Hyoung Lee, Cheoljae Seo, Min-Young Kim, Seungyeon Joo, Hyeonji Song, Young-Seok Bae, Sukang Lee, Ju-Hyuck Lee, Seoung-Ki Kim, Tae-Wook 2025-11-13T08:32:31Z 2025-11-13T08:32:31Z 2025-11-11 2026-01 0935-9648 https://pubs.kist.re.kr/handle/201004/153445 2D single-crystalline metal nanosheets are a promising platform for self-powered electronics, yet their potential for triboelectric nanogenerators (TENGs) remains unexplored. A key challenge in TENGs is overcoming low current output and limited durability. A hierarchical porous copper nanosheet-based TENG (HPC-TENG) is reported to substantially enhance triboelectric performance through a unique structural design. The method uses a simple spray-coating process to create a hierarchical porous conductive film from 2D copper nanosheets (Cu NSs). By infiltrating this film with polydimethylsiloxane (PDMS), interfacial contact is maximized, significantly boosting charge generation during mechanical cycling. The HPC-TENG achieves a remarkable 590% enhancement in electrical output compared to conventional Cu thin-film TENGs, while maintaining stable operation over 100 000 cycles. Beyond energy harvesting, this architecture provides integrated multifunctionality, including stable electromagnetic interference (EMI) shielding effectiveness exceeding 30 dB and efficient Joule heating. These findings highlight the strong potential of hierarchical porous metal nanosheet electrodes as a versatile platform for advanced energy harvesting, EMI shielding, and flexible heating, opening new avenues for next-generation wearable electronics. English WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim Reconfiguring Hierarchical Porous Architecture of 2D Metal Nanosheets for Multifunctional Triboelectric Nanogenerators Article 10.1002/adma.202515466 1 Advanced Materials, v.38, no.5 Advanced Materials 38 5 N scie 2-s2.0-105019338577 Chemistry, Multidisciplinary Chemistry, Physical Nanoscience & Nanotechnology Materials Science, Multidisciplinary Physics, Applied Physics, Condensed Matter Chemistry Science & Technology - Other Topics Materials Science Physics Article; Early Access PERFORMANCE POWER LAYER hierarchical porous structure self-powered system solution-infiltrated structure triboelectric nanogenerator HPC-TENG 2D copper nanosheets