Zhang Lei, Dou Shi Xue, Liu Hua Kun, Huang Yunhui, Hu Xianluo
State Key Laboratory of Materials Processing and Die and Mould Technology School of Materials Science and Engineering Huazhong University of Science and Technology Wuhan 430074 P. R. China; Institute for Superconducting and Electronic Materials University of Wollongong Wollongong NSW 2522 Australia.
Institute for Superconducting and Electronic Materials University of Wollongong Wollongong NSW 2522 Australia.
Adv Sci (Weinh). 2016 Jun 8;3(12):1600115. doi: 10.1002/advs.201600115. eCollection 2016 Dec.
Increasing environmental problems and energy challenges have so far attracted urgent demand for developing green and efficient energy-storage systems. Among various energy-storage technologies, sodium-ion batteries (SIBs), electrochemical capacitors (ECs) and especially the already commercialized lithium-ion batteries (LIBs) are playing very important roles in the portable electronic devices or the next-generation electric vehicles. Therefore, the research for finding new electrode materials with reduced cost, improved safety, and high-energy density in these energy storage systems has been an important way to satisfy the ever-growing demands. Symmetric electrodes have recently become a research focus because they employ the same active materials as both the cathode and anode in the same energy-storage system, leading to the reduced manufacturing cost and simplified fabrication process. Most importantly, this feature also endows the symmetric energy-storage system with improved safety, longer lifetime, and ability of charging in both directions. In this Progress Report, we provide the comprehensive summary and comment on different symmetric electrodes and focus on the research about the applications of symmetric electrodes in different energy-storage systems, such as the above mentioned SIBs, ECs and LIBs. Further considerations on the possibility of mass production have also been presented.
迄今为止，日益严重的环境问题和能源挑战引发了对开发绿色高效储能系统的迫切需求。在各种储能技术中，钠离子电池（SIB）、电化学电容器（EC），尤其是已经商业化的锂离子电池（LIB），在便携式电子设备或下一代电动汽车中发挥着非常重要的作用。因此，在这些储能系统中寻找成本降低、安全性提高且能量密度高的新型电极材料的研究，一直是满足不断增长的需求的重要途径。对称电极最近成为研究热点，因为它们在同一储能系统中，阴极和阳极采用相同的活性材料，从而降低了制造成本并简化了制造工艺。最重要的是，这一特性还赋予了对称储能系统更高的安全性、更长的使用寿命以及双向充电能力。在本进展报告中，我们对不同的对称电极进行了全面总结和评论，并重点关注对称电极在不同储能系统中的应用研究，如上述的钠离子电池、电化学电容器和锂离子电池。此外，还对大规模生产的可能性进行了进一步探讨。
