|
| | | | |
| | | |
| Stat |
Members: 3645
Articles: 2'500'096
Articles rated: 2609
18 April 2024 |
|
| | | | |
|
Article overview
| |
|
|
Manganese reduction/oxidation reaction on graphene composites as a reversible process for storing enormous energy at a fast rate | | Yanyi Chen
; Chengjun Xu
; Shan Shi
; Jia Li
; Feiyu Kang
; Chunguang Wei
; | | Date: |
11 Oct 2014 | | Abstract: | Oxygen reduction/evolution reaction (ORR/OER) is a basic process for fuel
cells or metal air batteries. However, ORR/OER generally requires noble metal
catalysts and suffers from low solubility (10-3 molar per liter) of O2, low
kinetics rate (10-6 cm2/s) and low reversibility. We report a manganese
reduction/oxidation reaction (MRR/MOR) on graphene/MnO2 composites, delivering
a high capacity (4200 mAh/g), fast kinetics (0.0024 cm2/s, three orders higher
than ORR/OER), high solubility (three orders than O2), and high reversibility
(100%). We further use MRR/MOR to invent a rechargeable manganese ion battery
(MIB), which delivers an energy density of 1200 Wh/Kg (several times of lithium
ion battery), a fast charge ability (3 minutes), and a long cycle life (10,000
cycles). MRR/MOR renders a new class of energy conversion or storage systems
with a very high energy density enabling electric vehicles run much more miles
at one charge. | | Source: | arXiv, 1410.4223 | | Services: | Forum | Review | PDF | Favorites | |
|
|
No review found.
Did you like this article?
Note: answers to reviews or questions about the article must be posted in the forum section.
Authors are not allowed to review their own article. They can use the forum section.
browser claudebot
|
| |
|
|
|
|
News, job offers and information for researchers and scientists:
| |
REGISTER