报告人简介：

Dr.Wanlin GUO, Academician of  Chinese Academy of Sciences,Chair Professor inmechanics and nanoscience, founder and director of the Key Laboratory of Intelligent Nano Materials and Devices of Ministry of Education and the Institute of Nanoscience of Nanjing University of Aeronautics and Astronautics.His current research focuses on intelligent nano materials and devices, novelconception and technology for efficient energy conversion, molecular physical mechanics for neuronal signaling and molecular biomimics, as well as strength and safety of aircraft and engine. He has published more than 400 peer-reviewed journal papers on Nature series, Phys. Rev. Lett., J. Am. Chem. Soc., Adv.Mater., J. Mech. Phys. Solids, Nano Lett., etc. He received the National Science Foundation of China for Distinguished Young Scholars in 1996 and the honor of Cheung Kong Scholars in 1999. In 2012, he obtained the National Nature Science Prize of China.

报告摘要：

In contrast to conventional technologies that harvest kineticenergy of water,hydrovoltaic technology generate selectricity from the direct interaction of materials withwater1.

Water is not only the essence of life, but also the largest energy carrier on earth. Water covers about 70% of the earth's surface, absorbing 70%of the solar energy arriving the earth, and in the atmosphere it can existin liquid,gaseous and solid states. In human history, through a variety of scientific principles, such as running water driven wheel, steam locomotives, water drivengenerator as well as the electrokinetic effects,the potential energy or kineticenergy of water can be converted into useful mechanical motion and electrical energy according to the principles of classical mechanics and electromagneticdynamics2.In the recent decade, new mechanisms include waving potential3, drawing potential4,evaporation-induced electricpotential5 have been found. Withthese versatile hydrovoltaiceffects, energyfrom flowing, waving, dropping,condensing, and evaporating watercannowbe harvested, significantly extendingour capability in harvesting waterenergy, leading to the emerging hydrovoltaic technology 6 and hydrovoltaics: New ways of harvesting electricity from water7.

In the past two years, intensive efforts have been devoted to hydrovoltaic technology with notable developments made. The power generation hasbeen improved by several orders with incorporation of new materials and devices,putting the Hydrovoltaic Energy on the Way 8.

Here, we will review hydrovoltaictechnology for harvesting environmental energy, serving as a potential Negative carbon emission energy technology, mainly focusingon the recent developments, and envision the future directions for hydrovoltaics.

References

1. 郭万林，水伏科学与技术的曙光，中国科学院第十九次院士大会第六届学术年会学术报告汇编，2018,608-618

2. Yin, J., Zhang, Z., Li, X., Zhou, J.& Guo, W. Harvesting Energy from Water Flow over Graphene? Nano Letters12, 1736-1741 (2012).

3. Yin,J., Zhang, Z., Li, X., Yu, J., Zhou, J., Chen, Y. & Guo, W. Wavingpotential in graphene. NatureCommunication5, 3582 (2014).

4. Yin,J., Li, X., Yu, J., Zhang, Z., Zhou, J. & Guo, W. Generating electricity bymoving a droplet of ionic liquid along graphene. Nature Nanotechnology9,378 (2014).

5. Xue,G., Xu, Y., Ding, T., Li, J., …, Zhou, J. & Guo, W.Water-evaporation-induced electricity with nanostructured carbon materials. Nature Nanotechnology12, 317 (2017).

6. Zhang,Z., Li, X., Yin, J., Xu, Y.,  Fei, W.,Xue, M., Wang, Q., Zhou J. & Guo, W. Emerging hydrovoltaic technology. Nature Nanotechnology13, pages1109–1119 (2018.12.6).

7. Editorial: More power from water. Nature Nanotechnology 13, 1087-1087 (2018).

8. Yin J，Zhou J，Fang S，Guo W,Hydrovoltaic Energy on the Way  Joule 2020, DOI：10.1016/j.joule.2020.07.015