Author
Wan Ramli Wan Daud
Other affiliations: Universiti Teknologi MARA
Bio: Wan Ramli Wan Daud is an academic researcher from National University of Malaysia. The author has contributed to research in topics: Proton exchange membrane fuel cell & Membrane. The author has an hindex of 60, co-authored 428 publications receiving 13522 citations. Previous affiliations of Wan Ramli Wan Daud include Universiti Teknologi MARA.
Papers published on a yearly basis
Papers
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TL;DR: An overview on the possibilities for using the direct methanol fuel cell as portable electronic devices power source along with some views on current and future trends in DMFC development, economic analysis and presents the current problems and solutions by DMFC researchers are given.
670 citations
TL;DR: In this paper, the challenges and the developments of direct ethanol fuel cells at present are addressed and the applications of DEFC are presented, as well as the challenges that need to be addressed.
461 citations
TL;DR: In this paper, a review of the preparation methods and various properties of graphene oxide is presented, followed by a discussion on the working parameters of the two different electrochemical routes and the associated electrochemical techniques used to produce graphene.
453 citations
TL;DR: In this article, the authors provided information encompassing the recent discovery of the High Temperature Proton Exchange Membrane Fuel Cell (HT-PEMFC) focusing on systems requirement.
419 citations
TL;DR: In this paper, a review of PEMFC control sub-systems including reaction, thermal, water management and power electronic subsystems is presented, with special attention on control strategies to avoid fuel starvation.
395 citations
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TL;DR: Approaches to Modifying the Electronic Band Structure for Visible-Light Harvesting and its Applications d0 Metal Oxide Photocatalysts 6518 4.4.1.
Abstract: 2.3. Evaluation of Photocatalytic Water Splitting 6507 2.3.1. Photocatalytic Activity 6507 2.3.2. Photocatalytic Stability 6507 3. UV-Active Photocatalysts for Water Splitting 6507 3.1. d0 Metal Oxide Photocatalyts 6507 3.1.1. Ti-, Zr-Based Oxides 6507 3.1.2. Nb-, Ta-Based Oxides 6514 3.1.3. W-, Mo-Based Oxides 6517 3.1.4. Other d0 Metal Oxides 6518 3.2. d10 Metal Oxide Photocatalyts 6518 3.3. f0 Metal Oxide Photocatalysts 6518 3.4. Nonoxide Photocatalysts 6518 4. Approaches to Modifying the Electronic Band Structure for Visible-Light Harvesting 6519
6,332 citations
TL;DR: The latest efforts using advanced characterization techniques, particularly electrochemical impedance spectroscopy, are presented to define the obstacles that remain to be surmounted in order to fully exploit the potential of hematite for solar energy conversion.
Abstract: Photoelectrochemical (PEC) cells offer the ability to convert electromagnetic energy from our largest renewable source, the Sun, to stored chemical energy through the splitting of water into molecular oxygen and hydrogen. Hematite (α-Fe(2)O(3)) has emerged as a promising photo-electrode material due to its significant light absorption, chemical stability in aqueous environments, and ample abundance. However, its performance as a water-oxidizing photoanode has been crucially limited by poor optoelectronic properties that lead to both low light harvesting efficiencies and a large requisite overpotential for photoassisted water oxidation. Recently, the application of nanostructuring techniques and advanced interfacial engineering has afforded landmark improvements in the performance of hematite photoanodes. In this review, new insights into the basic material properties, the attractive aspects, and the challenges in using hematite for photoelectrochemical (PEC) water splitting are first examined. Next, recent progress enhancing the photocurrent by precise morphology control and reducing the overpotential with surface treatments are critically detailed and compared. The latest efforts using advanced characterization techniques, particularly electrochemical impedance spectroscopy, are finally presented. These methods help to define the obstacles that remain to be surmounted in order to fully exploit the potential of this promising material for solar energy conversion.
2,318 citations
03 Sep 2008
TL;DR: The principles and state-of-art in motion-driven miniature energy harvesters are reviewed and trends, suitable applications, and possible future developments are discussed.
Abstract: Energy harvesting generators are attractive as inexhaustible replacements for batteries in low-power wireless electronic devices and have received increasing research interest in recent years. Ambient motion is one of the main sources of energy for harvesting, and a wide range of motion-powered energy harvesters have been proposed or demonstrated, particularly at the microscale. This paper reviews the principles and state-of-art in motion-driven miniature energy harvesters and discusses trends, suitable applications, and possible future developments.
1,781 citations
TL;DR: In this article, the authors present an overview of the key requirements for the proton exchange membranes (PEM) used in fuel cell applications, along with a description of the membrane materials currently being used and their ability to meet these requirements.
1,715 citations