High-Performance Ionic Diode Membrane for Salinity Gradient Power Generation
文献类型：期刊论文
| 作者 | Gao, Jun1; Guo, Wei1,4; Feng, Dan2,3; Wang, Huanting5; Zhao, Dongyuan2,3; Jiang, Lei1 |
| 刊名 | JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
 |
| 出版日期 | 2014-09-03 |
| 卷号 | 136期号:35页码:12265-12272 |
| ISSN号 | 0002-7863 |
| DOI | 10.1021/ja503692z |
| 英文摘要 | Salinity difference between seawater and river water is a sustainable energy resource that catches eyes of the public and the investors in the background of energy crisis. To capture this energy, interdisciplinary efforts from chemistry, materials science, environmental science, and nanotechnology have been made to create efficient and economically viable energy conversion methods and materials. Beyond conventional membrane-based processes, technological breakthroughs in harvesting salinity gradient power from natural waters are expected to emerge from the novel fluidic transport phenomena on the nanoscale. A major challenge toward real-world applications is to extrapolate existing single-channel devices to macroscopic materials. Here, we report a membrane-scale nanofluidic device with asymmetric structure, chemical composition, and surface charge polarity, termed ionic diode membrane (IDM), for harvesting electric power from salinity gradient. The IDM comprises heterojunctions between mesoporous carbon (pore size similar to 7 nm, negatively charged) and macroporous alumina (pore size similar to 80 nm, positively charged). The meso-/macroporous membrane rectifies the ionic current with distinctly high ratio of ca. 450 and keeps on rectifying in high-concentration electrolytes, even in saturated solution. The selective and rectified ion transport furthermore sheds light on salinity-gradient power generation. By mixing artificial seawater and river water through the IDM, substantially high power density of up to 3.46 W/m(2) is discovered, which largely outperforms some commercial ion-exchange membranes. A theoretical model based on coupled Poisson and Nernst Planck equations is established to quantitatively explain the experimental observations and get insights into the underlying mechanism. The macroscopic and asymmetric nanofluidic structure anticipates wide potentials for sustainable power generation, water purification, and desalination. |
| 语种 | 英语 |
| 出版者 | AMER CHEMICAL SOC |
| WOS记录号 | WOS:000341226000018 |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/52241]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Guo, Wei |
| 作者单位 | 1.Chinese Acad Sci, Inst Chem, Key Lab Organ Solids, BNLMS, Beijing 100190, Peoples R China 2.Fudan Univ, Dept Chem, Shanghai 200433, Peoples R China 3.Fudan Univ, Shanghai Key Lab Mol Catalysis & Innovat Mat, Shanghai 200433, Peoples R China 4.Chinese Acad Sci, Tech Inst Phys & Chem, Lab Bioinspired Smart Interface Sci, Beijing 100190, Peoples R China 5.Monash Univ, Dept Chem Engn, Clayton, Vic 3800, Australia |
| 推荐引用方式 GB/T 7714 | Gao, Jun,Guo, Wei,Feng, Dan,et al. High-Performance Ionic Diode Membrane for Salinity Gradient Power Generation[J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY,2014,136(35):12265-12272. |
| APA | Gao, Jun,Guo, Wei,Feng, Dan,Wang, Huanting,Zhao, Dongyuan,&Jiang, Lei.(2014).High-Performance Ionic Diode Membrane for Salinity Gradient Power Generation.JOURNAL OF THE AMERICAN CHEMICAL SOCIETY,136(35),12265-12272. |
| MLA | Gao, Jun,et al."High-Performance Ionic Diode Membrane for Salinity Gradient Power Generation".JOURNAL OF THE AMERICAN CHEMICAL SOCIETY 136.35(2014):12265-12272. |
入库方式： OAI收割
来源：化学研究所
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