A Great Leap Forward in Fuel Cell Technology Made at NTHU
Scientists have long been struggling to develop high-performance fuel cells as environmentally friendly power in electric vehicles. However, Prof. Chen Tsan-Yao of the Department of Engineering and System Science (National Tsing Hua University, Taiwan) has recently made a major breakthrough by using ultrasonic waves to make tiny grooves in the surface of various materials, which in conjunction with an atomic-scale platinum catalyst can be used to double the alkaline fuel cells (AFCs) efficiency.
This press release features multimedia. View the full release here: https://www.businesswire.com/news/home/20190507005508/en/
Prof. Chen Tsan-Yao recently developed a way of using ultrasonic waves to make tiny grooves on a metal surface, which in conjunction with an atomic-scale platinum catalyst can be used to double the efficiency of alkaline fuel cells. (Photo: National Tsing Hua University)
This atomic-scale catalyst increases the oxygen reduction (cathode reaction) current intensity by tenfold, with no degradation for eight months of continuous operation, while reducing the production cost by 90 percent; such cells have a lifespan of two to three years. This groundbreaking research has been published and selected as a focus paper of Energy Materials in the February issue of Nature Communications. Prof. Chen said that he is currently developing a quantum-size-correlation in catalyst for making cells even cheaper and more efficient.
Exploring the boundary in atomic scale
A fuel cell is a power generation device to convert chemical energy into electrical energy. AFCs are safer and more efficient than acid batteries, and thus are widely used in spacecraft and satellites. The catalyst is the key component in fuel cell performance. Prof. Chen said that there are many factors affecting the efficiency of the catalyst, especially size. At the same volume, the smaller the catalyst particles, the larger the surface area, and the higher the performance. However, if the particles are too small, they become unstable and rapidly lose their efficiency. Thus, Chen’s challenge was to find a way to reduce size and increase stability.
Inspired from the love of coffee soda
Chen said that coffee soda inspires him in the strategies. In 2016, while chatting with a coffee shop owner, he discovered that depending on the order in which the coffee and soda are poured into the glass, the sweetness, taste, and amount of bubbles are very different. As a result, he had his research assistants reverse the order in crystal growth. Unlike the traditional method, they add new materials every ten seconds and stop the reaction in only seconds, which results in the Pt trimer catalysts.
Reduced cost, increased efficiency, and extended lifespan
Not surprisingly, Chen’s students initially had some doubts about his unorthodox approach. With hundreds of failures, they finally made the Pt trimer catalysts which remained stable while maintaining high activity in AFCs. Chen said that the amount of platinum used in his atomic catalyst is only 1%, compared to 35% for the average commercial catalyst; and the mass current density is increased by 30 times.
Executive Officer, Division of Public Affair
National Tsing Hua University
About Business Wire
(c) 2018 Business Wire, Inc., All rights reserved.
Business Wire, a Berkshire Hathaway company, is the global leader in multiplatform press release distribution.
Subscribe to releases from Business Wire
Subscribe to all the latest releases from Business Wire by registering your e-mail address below. You can unsubscribe at any time.
Latest releases from Business Wire
Moody’s Analytics Wins Best Reporting System Provider in Waters Rankings23.7.2019 15:30:00 CEST | Press release
Moody’s Analytics, a global provider of financial intelligence, has won the award for Best Reporting System Provider in the 2019 Waters Rankings. We earned this recognition for our regulatory reporting solution. This press release features multimedia. View the full release here: https://www.businesswire.com/news/home/20190723005679/en/ For banks and insurers, staying on top of regulatory changes is critical. Our end-to-end solution handles the entire reporting process, producing 3,000 different regulatory reports covering more than 50 jurisdictions. It automatically delivers all required updates well in advance of the relevant deadlines and makes it easy for clients to review, adjust, audit, and validate their reports. The Moody’s Analytics regulatory surveillance team boasts a wealth of experience in both local and international domains going back decades. They monitor more than 100 supervisor websites to ensure that our clients receive the updates they need in a timely fashion. “Regu
Gilead Presents New Findings on Profile of Descovy® for Potential Use as HIV Pre-exposure Prophylaxis Compared With Truvada®23.7.2019 15:00:00 CEST | Press release
Gilead Sciences, Inc. (NASDAQ: GILD) today presented additional results from the DISCOVER trial evaluating an investigational use of Descovy (emtricitabine 200 mg and tenofovir alafenamide 25 mg tablets; F/TAF) for HIV pre-exposure prophylaxis (PrEP). In a sub-analysis of the DISCOVER trial, Descovy reached intracellular drug concentration levels above the estimated protective threshold significantly more quickly than Truvada (emtricitabine 200 mg and tenofovir disoproxil fumarate 300 mg tablets; F/TDF), and additional pharmacokinetic data confirm that these drug concentration levels persist longer than Truvada. The results were presented at the 10th International AIDS Society Conference on HIV Science (IAS 2019) being held in Mexico City. “Gilead is committed to driving advances in HIV prevention and supporting broader public health initiatives that are designed to reduce HIV infections,” said Diana Brainard, MD, Senior Vice President, HIV and Emerging Viruses, Gilead Sciences. “These
Velodyne Lidar Acquires Mapper.ai for ADAS Launch23.7.2019 15:00:00 CEST | Press release
Velodyne Lidar, Inc. today announced it has acquired mapping and localization software as well as intellectual property assets from Mapper.ai. Mapper technology will enable Velodyne to accelerate development of Vella™, breakthrough software that establishes its directional view Velarray™ lidar sensor. The Velarray is the first solid-state Velodyne lidar sensor that is embeddable and fits behind a windshield, as an integral component for superior, more effective advanced driver assistance systems (ADAS). This press release features multimedia. View the full release here: https://www.businesswire.com/news/home/20190723005257/en/ In addition to ADAS, Velodyne will incorporate Mapper technology into lidar-centric solutions for other emerging applications, including autonomous vehicles, last-mile delivery services, security, smart cities, smart agriculture, robotics, and unmanned aerial vehicles. (Photo: Business Wire) Mapper’s entire leadership and engineering teams will join Velodyne, bol
Wealthy Americans are increasingly willing to invest, new UBS survey finds23.7.2019 14:12:00 CEST | Press release
US high net worth individuals and business owners are expressing growing intentions to invest as US markets continue to hit record highs in 2019, according to UBS Global Wealth Management's new quarterly Investor Sentiment survey. The survey, which polled more than 3,800 wealthy investors and entrepreneurs in 17 countries, also shows US investors remain positive on the U.S. stock market but continue to rank politics and the national debt as top concerns. Fifty percent of US investors see a diversified portfolio as a hedge against US-China trade tensions specifically, in line with UBS GWM's own views, compared with 41% who favor cash. Filippo Ilardi, US Client Strategy Officer at UBS Global Wealth Management, says: "We are pleased to see a substantial increase in investors willing to put more money in the market. Wealthy Americans are concerned about the political environment and US-China trade tensions but we are encouraged that they see diversification as an important way of managing
Andersen Global Expands into Ghana23.7.2019 13:30:00 CEST | Press release
Ghana law firm, Sam Okudzeto & Associates, signed a collaboration agreement with Andersen Global, marking Andersen Global’s presence in 13 African countries and over 51 countries worldwide. Located in the capital of Accra, Sam Okudzeto & Associates is one of the largest law firms in Ghana. For the past 48 years, the firm has provided legal advice and guidance in the corporate and commercial areas, including patents and trademarks, mergers and acquisition, tax advisory, corporate banking, international trade and investment, debt recovery, mining and mineral law, industrial and labor, aviation, maritime law, petroleum oil and gas, and intellectual property. Sam Okudzeto & Associates founder and Managing Partner, Sam Okudzeto and Nene Amegatcher, have led the team since the establishment of the firm until Nene Amegatcher was elevated to the Supreme Court. The firm now has four partners and 18 lawyers who have gained international reputation for their keen knowledge and experience with Alt
Seoul Semiconductor Switches to Rimini Street for SAP Support23.7.2019 13:00:00 CEST | Press release
Rimini Street, Inc. (Nasdaq: RMNI), a global provider of enterprise software products and services, the leading third-party support provider for Oracle and SAP software products and a Salesforce partner, today announced that Seoul Semiconductor, a global LED development and manufacturing company headquartered in South Korea, has switched from SAP to Rimini Street for support of its SAP ECC 6.0 system. As a result, Seoul Semiconductor has been able to reduce its annual maintenance fee by 50%, enjoy better support and can continue operating its stable, robust ERP ECC 6.0 system for a minimum of 15 additional years from the date the company switched to Rimini Street to retain full support without any forced upgrades or product migrations. This press release features multimedia. View the full release here: https://www.businesswire.com/news/home/20190723005031/en/ Seoul Semiconductor, a global LED development and manufacturing company headquartered in South Korea, has switched from SAP to R