论文成果

发布时间：

2026-09-28

论文名称：

Layered Janus Gel for Efficient Portable Solar H2 Production From Atmospheric Moisture

发表刊物：

Advanced Energy Materials

摘要：

Photothermal catalytic atmospheric water splitting enables off-grid in situ H2 production but remains constrained by low energy conversion efficiency, sacrificial agent dependence, and sorbent degradation. Herein, we report a Janus-structured gel with asymmetric wettability between its top and bottom surfaces, consisting of a LiCl-modified nanofibrillated cellulose hygroscopic bottom layer, a SrTiO3:Al photocatalytic top layer, and a strategically engineered polyvinylidene fluoride interlayer, designed for clean and efficient in situ H2 production. The uniquely designed interlayer synergistically facilitates efficient water desorption from the hygroscopic matrix, creates a liquid-exclusion interface minimizing H2 diffusion resistance, and serves as a protective barrier to inhibit hygroscopic component oxidation. Benefiting from this design, this Janus layered system achieves sustained H2 production from air across diverse humidity levels. At 90% relative humidity, it delivers a hygroscopic capacity of 4.21 gH2O gsorbent−1, a H2 production rate of 78.50 mmol h−1 m−2, and a solar-to-hydrogen efficiency of 0.35%. These findings demonstrate the promise of the Janus-structured gel for portable, off-grid, and green H2 supply systems.

合写作者：

Xueli Yan, Xingyuan Zhao, Li Tian, Chunyang Zhang, Shidong Zhao, Xinyi Wang, Xiangjiu Guan, Jinwen Shi, Maochang Liu*

卷号：

16

期号：

29

页面范围：

e71161

是否译文：

否

发表时间：

2026-06-02