װ ȭа ΰ

Content on this page requires a newer version of Adobe Flash Player.

Get Adobe Flash player

 
ۼ : 17-07-03 09:40
[2017.06]ڹ Tattooing Dye as a Green Electrode Material for Lithium Batteries
-
 ۾ :
ȸ : 226  

Tattooing Dye as a Green Electrode Material for Lithium Batteries


ڻ (ڻ ), ڹ


ڿ ִ ȫ(red-orange) lawsone (2-hydroxy-1,4-naphthoquinone) Ƭ Ȱϴ Ͽ. lawsone ϴ Ƭ 280 mAhg1 (̷ 뷮 99% ش) 644 Whkg-1 е, 0.5 C ǿ 1000 cycles ̻ , ׸ 5 C ӵ Ư ش. ̷ ٸ Ӹ ƴ϶ ȭ LiCoO2 (140 mAhg1, 520 Whkg-1) Ͽ ſ ε巯 ش. ̷ lawsone Ư 2 · ڹ迭(molecular packing) ϸ ̸ lawsone ȭȯ Ȱ pŻ ø شȭȴ. ̷ lawsone ڴ ٸ ռ ڵ鿡 ~ ̻ ̿ ̸ ݱʹ ٸ Ư Ȯ ִ. Ӹ ƴ϶ lawsone 쳪 κ ǰ Ӹ Ǻ õ Ǿ غ , ̷ ģȯ ߿ ο ִ.

We investigate lawsone (2-hydroxy-1,4-naphthoquinone), a naturally derived red-orange dye as a promising cathode material for next-generation lithium batteries. Lithium cells based on lawsone cathode displayed a high discharge capacity of 280 mAhg1 (99% theoretical capacity), a high energy density of 664 Whkg-1, and long life of 1000 cycles at 0.5 C along with good rate performance up to 5 C. These results represent significant improvements from previously reported organic cathode materials, and surpass those of conventional lithium batteries based on LiCoO2 cathodes (140 mAhg1 and 520 Whkg-1, respectively). Its success stems from the unique 2-dimensional planar packing of lawsone molecules, with maximized overlap of adjacent p orbitals for redox active sites. The result is the simultaneous enhancement of electrical and ionic conductivities that are an order of magnitude higher than those of other synthetic quinones. Given that lawsone is derived from the henna plant and has long been used as a dye for human hair and skin, this work may open a new chapter in the design of future green batteries.


 
 

Total 73
ȣ     ۾ ¥ ȸ
73 [2017.08] 輺 Light-Induced Fluorescence Modulation of Quantum Dot-Crystal Violet Conjugates: Stochastic Off–On–Off Cycles for Multicolor Patterning and Super-Resolution 08-29 105
72 [2017.07]ȯ Diastereo- and Enantioselective Synthesis of -Aminoboronate Esters by Copper(I)-Catalyzed 1,2-Addition of 1,1-Bis[(pinacolato)boryl]alkanes to Imines 07-20 206
71 [2017.06]ڹ Tattooing Dye as a Green Electrode Material for Lithium Batteries 07-03 227
70 [2017.04]輺 Cancer-Microenvironment-Sensitive Activatable Quantum Dot Probe in the Second Near-Infrared Window 04-20 521
69 [2017.01]ȯ Chemoselective Coupling of 1,1-Bis[(pinacolato)boryl]alkanes for the Transition-Metal-Free Borylation of Aryl and Vinyl Halides: A Combined Experimental and Theoretical Invesitigation 01-02 1024
68 [2016.11]ڹ 1 Volt-Driven Superfast Polymer Actuators Based on Single Ion Conductors 11-16 964
67 [2016.09]α Ultrathin and Flat Layer Black Phosphorus Fabricated by Reactive Oxygen and Water Rinse 09-22 980
66 [2016.08]ö Unique Crystallization of Fullerenes: Fullerene Flowers 08-30 587
65 [2016.08]ö Nanocomb Architecture Design Using Germanium Selenide as High Performance Lithium Storage Material 08-29 852
64 [2016.08]ؿ Visualization and Quantification of MicroRNA in a Single Cell Using Atomic Force Microscopy 08-17 798
63 [2016.06]ȯ Transition-Metal-Free Regioselective Alkylation of Pyridine N-Oxides Using 1,1-Diborylalkanes as Alkylating Reagents 06-29 1022
62 [2016.05]ؿ Quantification of Fewer Than Ten Copies of a DNA Biomarker without Amplification or Labeling 05-16 1040
61 [1603] -Light-Induced Acid Generation on a Gatekeeper for Smart Nitric Oxide Delivery 03-30 1207
60 [16.01]ȯ -Synthesis of Branched Alkylboronates by Copper-Catalyzed Allylic Substitution Reactions of Allylic Chlorides with 1,1-Diborylalkanes 01-28 1571
59 [16.01] - Synergistic Nanomedicine by Combined Gene and Photothermal therapy 01-27 1143
 1  2  3  4  5  

Content on this page requires a newer version of Adobe Flash Player.

Get Adobe Flash player