eScience高峰論壇-卓越講座 將於6月18日上午10:00-11:30 線上舉辦，特邀嘉賓為中國科學院北京納米能源與系統研究所所長，中科院大學納米學院院長、講席教授，佐治亞理工學院終身校董事講席教授，中國科學院外籍院士王中林教授。王中林院士是eScience顧問編委。eScience系列高峰論壇聚焦新能源高效轉化與高密存儲，探討能源領域世界科技前沿進展，服務「碳達峰、碳中和」國家戰略需求。
王中林院士
中國科學院北京納米能源與系統研究所所長
中科院大學納米學院院長、講席教授
佐治亞理工學院終身校董事講席教授
eScience顧問編委
王中林院士是2019年愛因斯坦世界科學獎（Albert Einstein World Award of Science）、2018年埃尼獎（ENI Award-The "Nobel Prize" for Energy）、2015年湯森路透引文桂冠獎、2014年美國物理學會James C. McGroddy新材料獎和2011年美國材料學會獎章（MRS Medal）等國際大獎得主。他是中科院外籍院士、歐洲科學院院士、加拿大工程院外籍院士，國際納米能源領域著名刊物Nano Energy（最新IF：17.88）的創刊主編和現任主編。王院士是納米能源研究領域的奠基人。他發展了基於納米能源的高熵能源與新時代能源體系；開創了基於納米發電機的自驅動系統及藍色能源宏大領域，與基於壓電電子學與壓電光電子學效應的第三代半導體的嶄新領域；建立了壓電電子學、壓電光電子學與摩擦電子學學科；發現了六個新物理效應：壓電電子學效應、壓電光電子學效應、壓電光子學效應、摩擦伏特效應、熱釋光電子效應和交流光伏效應。王中林院士在所有領域世界前10萬科學家終身科學影響力排第三，2019年和2020年度科學影響力排第一；材料科學世界排名第一；工程與技術世界排名第四，納米技術排名第一。王院士有上百個美國和國際專刊，並孵化了五家企業。
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.[1] Z.L. Wang* and A.C. Wang*, "On the origin of contact electrification" (Review), Materials Today, 30 (2019) 34-51; https://doi.org/10.1016/j.mattod.2019.05.016[2] S. Lin, X. Chen, and Z.L. Wang*, "Contact-electrification at liquid-solid interface" (Review), Chemical Review, 122 (2022) 5209-5232; https://doi.org/10.1021/acs.chemrev.1c00176[3] Z.L. Wang*, "On the first principle theory of nanaogenerators from Maxwell’s equations" (Full Paper), Nano Energy, 68 (2020) 104272; https://doi.org/10.1016/j.nanoen.2019.104272[4] Z.L. Wang*, "From conctact electrication to triboelectric nanogenerators" (Review), Report on Progress in Physics, 84 (2021) 096502; https://doi.org/10.1088/1361-6633/ac0a50會議聯繫人
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