Advanced materials for flexible electrochemical energy storage devices
- PDF / 1,194,973 Bytes
- 16 Pages / 584.957 x 782.986 pts Page_size
- 83 Downloads / 233 Views
REVIEW This section of Journal of Materials Research is reserved for papers that are reviews of literature in a given area.
Advanced materials for flexible electrochemical energy storage devices Linheng He, Kechun Wen, and Zuoxiang Zhang School of Physics, University of Electronic Science and Technology of China, Chengdu 611731, People’s Republic of China
Luhan Ye School of Engineering and Applied Sciences, Harvard University, Cambridge, Massachusetts 02138, USA
Weiqiang Lv, Jipeng Fei, Shangqun Zhang, and Weidong Hea) School of Physics, University of Electronic Science and Technology of China, Chengdu 611731, People’s Republic of China (Received 8 May 2018; accepted 22 June 2018)
Flexibility is a key parameter of device mechanical robustness. The most profound challenge for the realization of flexible electronics is associated with the relatively low flexibility of power sources. In this article, two kinds of energy applications, which have gained increasing attention in the field of flexibility in recent years, are introduced: the lithium-ion batteries and the supercapacitors. We overview the latest progresses in flexible materials and manufacturing technology. The performances of the energy devices based on flexible materials are introduced. The advantages and disadvantages of different manufacturing processes are discussed systematically. We then focus on current technical difficulties and future prospects of research in flexibility.
I. INTRODUCTION
The demand for flexibility in the field of energy devices has become increasingly important.1,2 Wearable smart devices have been brought to reality from thoughts these years. In 2014, Apple unveiled their smart watch. This novel product hits the market. However, it still receives many criticisms on its battery: users have to charge their watches once or more times per day to guarantee the normal working.3 It is clear that the performance of batteries applied in small-size devices still needs to be enhanced. Moreover, the flexible battery is urgent to be realized, which can directly change the appearance of such portable products. Actually, technology of flexible energy applications should be conquered first to manufacture ultrathin and portable facilities. The portable devices like smart bands, smart phones, and laptop computers are all calling for highly efficient flexible energy supplier to open up an innovation process. In recent years, researchers have invested efforts to realize the flexible energy applications and plenty of bendable energy devices are designed, as shown in Fig. 1. Lithium-ion batteries (LIBs) are the ideal devices to power portable products due to their outstanding features a)
Address all correspondence to this author. e-mail: [email protected] DOI: 10.1557/jmr.2018.232 J. Mater. Res., 2018
like lightweight, high working voltage, high energy density, long repeat service life, and no memory effect. Traditional LIBs mainly consist of the electrodes, the separator, the electrolyte, and the shells. The electrodes are usually metal substrates coated w
Data Loading...
