室内色素増感太陽電池用低温スクリーン印刷多孔質炭素対極の効果的バインダーとしてのヒドロキシプロピルセルロース
Hydroxypropyl Cellulose as an Effective Binder for Low-Temperature Screen-Printed Porous Carbon Counter Electrodes for Indoor Dye-Sensitized Solar Cells (原題)
Roberto Speranza, Elisa Morale, Filippo Sergiacomi, Angelica Bisceglie, Giorgio Mogli, Simone Martellone, Andrea Lamberti
🤖 gxceed AI 要約
日本語
IoTセンサー向け室内光発電のための色素増感太陽電池（DSSC）において、高価で希少な白金に代わる持続可能な炭素対極を開発。生由来のヒドロキシプロピルセルロース（HPC）をバインダーとし、低温スクリーン印刷で作製可能な多孔質炭素電極を実現。1000ルクスの室内光下で14.8%の変換効率と200時間後の98.6%の安定性を達成し、エネルギー集約的な高温焼結を不要とするスケーラブルな製造経路を示した。
English
This study develops a sustainable carbon counter electrode for indoor dye-sensitized solar cells (DSSCs) to power IoT sensors, replacing scarce platinum. Using bio-derived hydroxypropyl cellulose (HPC) as a binder, a low-temperature screen-printable porous carbon electrode achieves 14.8% power conversion efficiency under 1000 lux and retains 98.6% of initial efficiency after 200 hours, eliminating energy-intensive high-temperature sintering and offering a scalable manufacturing pathway.
Unofficial AI-generated summary based on the public title and abstract. Not an official translation.
📝 gxceed 編集解説 — Why this matters
日本のGX文脈において
日本のIoT・センサー市場や建材一体型太陽電池（BIPV）への応用が期待される。省エネ・再生可能エネルギー拡大の観点で、室内光発電はZEBやカーボンニュートラル達成に寄与する可能性がある。ただし、現状は研究段階であり、実用化にはさらなる耐久性・コスト検証が必要。
In the global GX context
This work contributes to the global transition toward low-carbon energy by enabling low-cost, sustainable indoor photovoltaics for IoT devices, reducing reliance on scarce materials like platinum. It aligns with circular economy principles and energy efficiency goals, though its direct impact on large-scale decarbonization is limited. The low-temperature fabrication process offers a scalable pathway for manufacturing, relevant to global efforts in sustainable electronics.
👥 読者別の含意
🔬研究者:Provides a novel low-temperature carbon electrode fabrication method for indoor DSSCs, useful for researchers in sustainable photovoltaics.
🏢実務担当者:Offers a scalable, low-cost alternative to platinum electrodes for indoor PV manufacturing, potentially reducing material costs and energy consumption.
🏛政策担当者:Highlights the potential of indoor PV for IoT sustainability, but policy relevance is limited at this stage.
📄 Abstract（原文）
The development of indoor photovoltaic devices for powering Internet of Things (IoT) sensors requires low-cost and sustainable components, making dye-sensitized solar cells (DSSCs) an ideal candidate for artificial light harvesting. The counter electrode plays a critical role in transferring electrons and catalyzing the reduction in the redox electrolyte. However, the traditional use of expensive and scarce platinum (Pt) limits the cost-effective, large-scale commercialization of these devices. While carbon-based materials offer a highly porous, conductive, and abundant alternative, commercial carbon pastes frequently require energy-intensive high-temperature sintering. In this study, we propose a sustainable, low-temperature, and screen-printable carbon composite counter electrode (LoT-HPC) using bio-derived hydroxypropyl cellulose (HPC) as a highly effective binder. Rheological characterizations confirm that the formulated LoT-HPC ink possesses an ideal shear-thinning profile and rapid structural recovery, ensuring excellent printability and film homogeneity. By comparing the custom LoT-HPC composite against a commercial high-temperature screen-printed graphite paste (HT-Elco) and a standard sputtered Pt-FTO electrode, we demonstrate the structural and electrocatalytic advantages of this material. When integrated into full DSSC devices and evaluated under low indoor illumination (1000 lux), the LoT-HPC cell delivers a power conversion efficiency (PCE) of 14.8% and a high short-circuit current density of 103.9 µA cm−2. Furthermore, the custom device demonstrated exceptional operational stability, retaining 98.6% of its initial efficiency (from 14.8% to 14.6%) after 200 h of continuous light-soaking and J-V cycling under 1000 lux. Ultimately, the successful implementation of the HPC binder enables the low-temperature fabrication of sustainable carbon counter electrodes without the need for energy-intensive thermal treatments, presenting a highly scalable pathway for indoor DSSC manufacturing.
🔗 Provenance — このレコードを発見したソース
- openalex https://doi.org/10.3390/nano16161007first seen 2026-08-19 04:41:48
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