J
Junjie Niu
Researcher at University of Wisconsin–Milwaukee
Publications - 133
Citations - 11267
Junjie Niu is an academic researcher from University of Wisconsin–Milwaukee. The author has contributed to research in topics: Nanowire & Silicon. The author has an hindex of 32, co-authored 115 publications receiving 7785 citations. Previous affiliations of Junjie Niu include Shanghai Jiao Tong University & Taiyuan Normal University.
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Journal ArticleDOI
Two‐Dimensional Nanocrystals Produced by Exfoliation of Ti 3 AlC 2
Michael Naguib,Murat Kurtoglu,Volker Presser,Jun Lu,Junjie Niu,Min Heon,Lars Hultman,Yury Gogotsi,Michel W. Barsoum +8 more
TL;DR: 2D nanosheets, composed of a few Ti 3 C 2 layers and conical scrolls, produced by the room temperature exfoliation of Ti 3 AlC 2 in hydrofl uoric acid are reported, which opens a door to the synthesis of a large number of other 2D crystals.
Journal ArticleDOI
Two‐Dimensional Nanocrystals Produced by Exfoliation of Ti3AlC2.
Michael Naguib,Murat Kurtoglu,Volker Presser,Jun Lu,Junjie Niu,Min Heon,Lars Hultman,Yury Gogotsi,Michel W. Barsoum +8 more
TL;DR: Treatment of Ti3AlC2 powders in HF (2 h) results in exfoliation and formation of two-dimensional Ti3C2 layers with OH and/or F surface groups and conical scrolls as discussed by the authors.
Journal ArticleDOI
High-rate aluminium yolk-shell nanoparticle anode for Li-ion battery with long cycle life and ultrahigh capacity
TL;DR: Yolk-shell nanocomposite of aluminium core and TiO2 shell with tunable interspace achieves 10 C charge/discharge rate with reversible capacity exceeding 650 mAh g−1 after 500 cycles, with a 3 mg cm−2 loading.
Journal ArticleDOI
Multifunctional carbon-nanotube cellular endoscopes
Riju Singhal,Zulfiya Orynbayeva,Ramalingam Venkat Kalyana Sundaram,Junjie Niu,Sayan Bhattacharyya,Sayan Bhattacharyya,Elina A. Vitol,Michael G. Schrlau,Elisabeth S. Papazoglou,Gary Friedman,Yury Gogotsi +10 more
TL;DR: The endoscope, which is made by placing a multiwalled carbon nanotube at the tip of a glass pipette, can probe the intracellular environment with a spatial resolution of ∼100 nm and can also access organelles without disrupting the cell.
Journal ArticleDOI
Influence of the structure of carbon onions on their electrochemical performance in supercapacitor electrodes
John K. McDonough,Andrey I. Frolov,Volker Presser,Junjie Niu,Christopher H. Miller,Teresa Ubieto,Maxim V. Fedorov,Yury Gogotsi +7 more
TL;DR: In this paper, the capacitive performance of onion-like carbon (OLC) was studied as a function of the synthesis temperature and compared with diamond soot, carbon black, and activated carbon.