X
Xingfeng Wang
Researcher at Oregon State University
Publications - 21
Citations - 3862
Xingfeng Wang is an academic researcher from Oregon State University. The author has contributed to research in topics: Graphene & Electrolyte. The author has an hindex of 19, co-authored 21 publications receiving 3124 citations. Previous affiliations of Xingfeng Wang include Jilin University.
Papers
More filters
Journal ArticleDOI
Surface Chemistry Routes to Modulate the Photoluminescence of Graphene Quantum Dots: From Fluorescence Mechanism to Up‐Conversion Bioimaging Applications
Shoujun Zhu,Junhu Zhang,Shijia Tang,Chunyan Qiao,Lei Wang,Hai-Yu Wang,Xue Liu,Bo Li,Yunfeng Li,Weili Yu,Weili Yu,Xingfeng Wang,Hongchen Sun,Bai Yang +13 more
TL;DR: In this article, the intrinsic state emission plays a leading role, as opposed to defect state emission in GQDs, and the luminescence mechanism (the competition between both the defect state emissions and intrinsic state emissions) is explored in detail.
Journal ArticleDOI
Hard–Soft Composite Carbon as a Long-Cycling and High-Rate Anode for Potassium-Ion Batteries
Zelang Jian,Sooyeon Hwang,Zhifei Li,Alexandre S. Hernandez,Xingfeng Wang,Zhenyu Xing,Dong Su,Xiulei Ji +7 more
TL;DR: In this paper, nongraphitic carbons as K-ion anodes with sodium carboxymethyl cellulose as the binder are systematically investigated, and a hard-soft composite carbon with 20 wt% soft carbon distributed in the matrix phase of hard carbon microspheres exhibits highly amenable performance: high capacity, high rate capability, and very stable long-term cycling.
Journal ArticleDOI
Graphene quantum dots with controllable surface oxidation, tunable fluorescence and up-conversion emission
Shoujun Zhu,Junhu Zhang,Xue Liu,Bo Li,Xingfeng Wang,Shijia Tang,Qingnan Meng,Yunfeng Li,Ce Shi,Rui Hu,Bai Yang +10 more
TL;DR: In this article, a two-step method was used to synthesize GQDs with tunable surface chemistry (increasing oxidation degree) by an efficient two-stage method, which can be used as pH sensors.
Journal ArticleDOI
Mechanism of Na‐Ion Storage in Hard Carbon Anodes Revealed by Heteroatom Doping
Zhifei Li,Clement Bommier,Zhi Sen Chong,Zelang Jian,Todd Wesley Surta,Xingfeng Wang,Zhenyu Xing,Joerg C. Neuefeind,William F. Stickle,Michelle R. Dolgos,P. Alex Greaney,Xiulei Ji +11 more
TL;DR: In this article, the characteristics of hard carbons structure can be modified systematically by heteroatom doping, and these structural changes greatly affect Na-ion storage properties, which reveals the mechanisms for Na storage in hard carbon.
Journal ArticleDOI
Design of aqueous redox-enhanced electrochemical capacitors with high specific energies and slow self-discharge
Sang-Eun Chun,Brian Evanko,Xingfeng Wang,David Vonlanthen,Xiulei Ji,Galen D. Stucky,Shannon W. Boettcher +6 more
TL;DR: Characteristics of several redox electrolytes are reported to illustrate operational/self-discharge mechanisms and the design rules for high performance in electrochemical double-layer capacitors.