South Korean Researchers Turn Rice Husks Into Silicon Battery Anodes
July 16, 2013 7:27 PM
comment(s) - last by
Process could help to turn 80 million tons of trash into a valuable commodity
Rice is a staple crop of much of the world, but it's also a
big waste generator
. On average 20 percent of rice by weight is discarded. These dry, inedible husks are estimated to account for 80 million metric tons a year (out of a current annual rice yield of 422 million metric tons).
Tough and abrasive, the husks (also known as hulls) could only be used in low-cost materials such as fertilizer additives or bed soil. But
South Korean researchers
think they've devised a way to cut down on the amount of agricultural waste from rice farming, by transforming the husks into a more expensive finished product.
A team at the
Chungnam National University
has extracted silica from the silicon-rich husks to convert into silicon for battery anodes.
While nearly identical to sand from a molecular standpoint, rice silicon is deposited by the plant in porous nanolayers as a defense against insects and fungi. That means that to extract the valuable material, researchers had to use a multi-step process involving acid and heat treatment.
Rice hulls can make great anodes, with a bit of TLC, it turns out [Image Source: Melvin Pereira]
However, the process appears to pay off, yielding high-grade electronics ready silicon. The resulting yield is reportedly
especially desirable for battery anodes
due to its electrochemical characteristics.
The research team has
[abstract] their processing breakthrough in the prestigious peer-review journal, the
Proceedings of the National Academy of Sciences
Herald Sun News
This article is over a month old, voting and posting comments is disabled
7/17/2013 1:54:50 AM
..really will be rice burners!
RE: Asian EVs...
7/17/2013 2:10:40 PM
I look forward to riding some real rice rockets.
"This is from the DailyTech.com. It's a science website." -- Rush Limbaugh
New Lithium-ion Anode Uses Nanocomposites for Better Battery Performance
March 16, 2010, 10:16 AM
MSU's New Cellulosic Ethanol Breakthrough is Cheap, Efficient
January 22, 2009, 10:15 AM
Amazon Seeks FAA Permission to Test 50 MPH Flying Drones
July 11, 2014, 12:32 PM
Samsung Fails to Launch its Tizen-based Smartphone in Moscow, Unsure of New Launch Date
July 11, 2014, 9:00 AM
China's Top State-run Broadcaster Considers iOS Tracking Feature is a National Security Threat
July 11, 2014, 8:25 AM
Verizon Wireless Offers Up $100* LG G3, Will Be Available July 17
July 10, 2014, 4:21 PM
Satya Nadella Says Microsoft is a "Productivity and Platform Company" for the Mobile/Cloud World
July 10, 2014, 12:29 PM
Motorola Touts Its Moto 360 Smartwatch in Another Teaser Video
July 10, 2014, 9:26 AM
Most Popular Articles
Apple's iPhone, iPad Update iOS 7.1.2 is Badly Broken for Some
July 8, 2014, 2:00 PM
Despite Legal Threats Google Begins Posting Warnings of ISP Throttling
July 7, 2014, 5:52 PM
Google Steps up Moral Censorship, Hogties All Ads With Sexual Content
July 4, 2014, 2:00 PM
Your Uncharged Smartphone, Tablet May Prevent You from Boarding U.S.-bound Flights
July 6, 2014, 11:11 PM
Buzz Aldrin Says First Astronauts to Set Foot on Mars Should Never Return Home
July 9, 2014, 9:46 AM
Latest Blog Posts
Space Terrorism is a Looming Threat For the United States
Apr 23, 2014, 7:47 PM
Facebook Aims to Provide Internet to "Every Person in the World" with Drones, Satellites
Apr 1, 2014, 10:20 AM
Retail Mobile Sites Experience Outages in Light of Simplexity's Bankruptcy
Mar 14, 2014, 8:48 AM
Tesla vs. BMW: Who Has the Safer EV?
Feb 1, 2014, 2:56 PM
Justice Leaks Details of Next HTC One Two Flagship Phone
Dec 5, 2013, 4:04 PM
More Blog Posts
Copyright 2014 DailyTech LLC. -
Terms, Conditions & Privacy Information