王中林 院士
中国科学院北京纳米能源与系统研究所
中科院大学纳米学院
佐治亚理工学院
eScience顾问编委
主办方：
南开大学eScience编辑部
协办方：
南开大学新能源转化与存储交叉科学中心
先进能源材料化学教育部重点实验室
天津市新能源电池人才创新创业联盟
eScience高峰论坛-卓越讲座将于6月18日上午10:00-11:30 线上举办，特邀嘉宾为中国科学院北京纳米能源与系统研究所所长，中科院大学纳米学院院长、讲席教授，佐治亚理工学院终身校董事讲席教授，中国科学院外籍院士王中林教授。王中林院士是eScience顾问编委。eScience系列高峰论坛聚焦新能源高效转化与高密存储，探讨能源领域世界科技前沿进展，服务“碳达峰、碳中和”国家战略需求。
王中林院士是2019年爱因斯坦世界科学奖（Albert Einstein World Award of Science）、2018年埃尼奖（ENI Award-The "Nobel Prize" for Energy）、2015年汤森路透引文桂冠奖、2014年美国物理学会James C. McGroddy新材料奖和2011年美国材料学会奖章（MRS Medal）等国际大奖得主。他是中科院外籍院士、欧洲科学院院士、加拿大工程院外籍院士，国际纳米能源领域著名刊物Nano Energy（最新IF：17.88）的创刊主编和现任主编。王院士是纳米能源研究领域的奠基人。他发展了基于纳米能源的高熵能源与新时代能源体系；开创了基于纳米发电机的自驱动系统及蓝色能源宏大领域，与基于压电电子学与压电光电子学效应的第三代半导体的崭新领域；建立了压电电子学、压电光电子学与摩擦电子学学科；发现了六个新物理效应：压电电子学效应、压电光电子学效应、压电光子学效应、摩擦伏特效应、热释光电子效应和交流光伏效应。王中林院士在所有领域世界前10万科学家终身科学影响力排第三，2019年和2020年度科学影响力排第一；材料科学世界排名第一；工程与技术世界排名第四，纳米技术排名第一。王院士有上百个美国和国际专刊，并孵化了五家企业。Although
contact electrification (triboelecrification) (CE) has been documented since
2600 years ago, its scientific understanding remains inconclusive, unclear and
un-unified. This paper reviews the updated progress for studying the
fundamental mechanism of CE using Kelvin probe force microscopy for solid-solid
cases. Our conclusion is that electron transfer is the dominant mechanism for
CE between solid-solid pairs. Electron transfer occurs only when the
interatomic distance between the two materials is shorter than the normal
bonding length (typically ~0.2 nm) in the region of repulsive forces. A strong
electron cloud overlap (or wave function overlap) between the two atoms/molecules
in the repulsive region leads to electron transition between the
atoms/molecules, owing to the reduced interatomic potential barrier. The role
played by contact/friction force is to induce strong overlap between the
electron clouds (or wave function in physics, bonding in chemistry). The electrostatic
charges on the surfaces can be released from the surface by electron thermionic
emission and/or photon excitation, so these electrostatic charges may not
remain on the surface if sample temperature is higher than ~300-400 ℃.The
electron transfer model could be extended to liquid-solid, liquid-gas and even
liquid-liquid cases. As for the liquid-solid case, molecules in the liquid
would have electron cloud overlap with the atoms on the solid surface at the
very first contact with a virginal solid surface, and electron transfer is
required in order to create the first layer of electrostatic charges on the
solid surface. This step only occurs for the very first contact of the liquid
with the solid. Then, ion transfer is the second step and is the dominant
process thereafter, which is a redistribution of the ions in solution
considering electrostatic interactions with the charged solid surface. This is
proposed as a two-step formation process of the electric double layer (EDL) at
the liquid-solid interface.编辑：黄琦
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