Abstract: Flexible batteries have attracted great attention due to the growing need of power sources for flexible electronic products. At present, flexible lithium-ion battery dominates the consumer electronic markets, such as flexible displayers and wearable sensors, due to its high power and energy density. However, the limited lithium resourcesslow the sustainable development of batteries. Owing to abundant sodium resources and low cost, sodium-ion batteries have attracted more and more attention. Flexible sodium-ion batteries, which are expected to meet the future market demand, consist of electrode active materials, current collectors, electrolytes, and separators. The electrodes not only require high capa-city and electrical conductivity, but also need good mechanical flexibility to ensure that the flexible battery works properly under various deformations (bending, stretching, folding, etc.). Meanwhile, the flexible electrolytes and separators should maintain a stable interface with the electrodes while maintaining battery safety. However, these key materials are still imperfect which have hindered the development of flexible sodium-ion batteries. In addition, ordinary pouch-type flexible batteries cannot meet the miniaturization and wearability requirement of future electronic devices. Innovative and practical structural design and preparation techniques suitable for mass production are also in urgent need. Here, this review introduces the research efforts with respects to flexible sodium-ion battery, and provides elaborate descriptions about the electrode materials (including anode materials, cathode materials and conductive substrate), electrolytes, battery structure and preparation process. In addition, the existing problems of flexible sodium-ion batteries, such as high cost, poor safety, complicated preparation process and other issues, are critically discussed and analyzed. For further development, lower cost active materials and substrates of flexible sodium-ion batteries, as well as structural innovation are essential to solve the problems of flexible sodium-ion batteries. The combination of advanced materials and novel battery configuration will accelerate the practical application of flexible batteries and promote the prosperity of flexible electronic devices.
作者简介: 孟锦涛,2017年本科毕业于合肥工业大学。现为华中科技大学材料科学与工程学院硕士研究生。目前主要研究领域为新型储能电池。 沈越,于北京大学获得学士、硕士和博士学位,博士期间在佐治亚理工学院进行联合培养。现为华中科技大学材料学院副教授。长期从事锂空气电池、超声检测等方面的研究,相关工作发表在Science、Advanced Materials、Journal of American Chemical Society、Nano Energy和Angewandte Chemie International Edition等顶级学术期刊上。 黄云辉,华中科技大学教授,博导,教育部“长江学者”特聘教授,国家杰出青年科学基金获得者。分别于1988年、1991年和2000年在北京大学获得学士、硕士和博士学位。2002—2008年先后在复旦大学、日本东京工业大学和美国得州大学奥斯汀分校从事研究工作。2008年回国,2010—2017年任华中科技大学材料科学与工程学院院长。主要研究领域为新型能源材料与器件,发表论文400余篇、专利30余件,入选科睿唯安材料科学领域全球“高被引科学家”(2018、2019),获国家自然科学二等奖1项。
1 Armand M, Tarascon J M. Nature, 2008, 451(7179), 652. 2 Zhou G, Li F, Cheng H M. Energy & Environmental Science, 2014, 7(4), 1307. 3 Wen Y, He K, Zhu Y, et al. Nature Communications, 2014, 5, 4033. 4 Wen L, Li F, Cheng H. Advanced Materials, 2016, 28(22), 4306. 5 Wang S, Xia L, Yu L, et al. Advanced Energy Materials, 2016, 6(7), 1502217. 6 Yun Y S, Park Y U, Chang S J, et al. Carbon, 2016, 99, 658. 7 Zhang X, Zhou J, Liu C, et al. Journal of Materials Chemistry A, 2016, 4(22), 8837. 8 An H, Li Y, Gao Y, et al. Carbon, 2017, 116, 338. 9 Wang Y, Zhu W, Guerfi A, et al. Frontiers in Energy Research, 2019, 7, 28. 10 Ni Q, Dong R, Bai Y, et al. Energy Storage Materials, DOI: 10.1016/j.ensm.2019.09.001. 11 Li Z, Shen W, Wang C, et al. Journal of Materials Chemistry A, 2016, 4(43), 17111. 12 Zhao M, Xie X, Ren C E, et al. Advanced Materials, 2017, 29(37), 1702410. 13 Li Y, Wang D, An Q, et al. Journal of Materials Chemistry A, 2016, 4(15), 5402. 14 Li Y, Zhu H, Shen F, et al. Nano Energy, 2015, 13, 346. 15 Zhang Y, Liu Z, Zhao H, et al. RSC Advances, 2016, 6(2), 1440. 16 Du T, Zhu H, Xu B Bin, et al. ACS Applied Energy Materials, 2019, 2(6), 4421. 17 Chen G, Yao X, Cao Q, et al. Materials Letters, 2019, 234, 121. 18 Li W, Bi R, Liu G, et al. ACS Applied Materials & Interfaces, 2018, 10(32), 26982. 19 Zhang W, Liu Y, Chen C, et al. Small, 2015, 11(31), 3822. 20 Liu Y, Zhang N, Jiao L, et al. Advanced Materials, 2015, 27(42), 6702. 21 Fan M, Chen Y, Xie Y, et al. Advanced Functional Materials, 2016, 26(28), 5019. 22 Yang F, Gao H, Chen J, et al. Small Methods, 2017, 1(11), 1700216. 23 Liu Y, Zhang A, Shen C, et al. ACS Nano, 2017, 11(6), 5530. 24 Wang X, Guo H, Liang J, et al. Advanced Functional Materials, 2018, 28(26), 1801016. 25 Yu T, Lin B, Li Q, et al. Physical Chemistry Chemical Physics, 2016, 18(38), 26933. 26 Chen S, Wu C, Shen L, et al. Advanced Materials, 2017, 29(48), 1700431. 27 Kretschmer K, Sun B, Zhang J, et al. Small, 2017, 13(9), 1603318. 28 Guo D, Qin J, Zhang C, et al. Crystal Growth & Design, 2018, 18(6), 3291. 29 Yu S, Liu Z, Tempel H, et al. Journal of Materials Chemistry A, 2018, 6(37), 18304. 30 Zhan C L, Lu Y X, Yue J M, et al. Journal of Energy Chemistry, 2018, 27(6), 1584. 31 Wu X, Jin S, Zhang Z, et al. Science Advances, 2015, 1(8), e1500330. 32 He J, Wang N, Cui Z, et al. Nature Communications, 2017, 8(1), 1172. 33 Yang D, Liao X-Z, Shen J, et al. Journal of Materials Chemistry A, 2014, 2(19), 6723. 34 Liu Y, Zhang N, Yu C, et al. Nano Letters, 2016, 16(5), 3321. 35 Liu S, Luo Z, Tian G, et al. Journal of Power Sources, 2017, 363, 284. 36 Wang K, Huang Y, Wang M, et al. Carbon, 2017, 125, 375. 37 Ni Q, Bai Y, Li Y, et al. Small, 2018, 14(43), 1702864. 38 Chao D, Lai C, Liang P, et al. Advanced Energy Materials, 2018, 8(16), 1800058. 39 Zhu Y, Yuan S, Bao D, et al. Advanced Materials, 2017, 29(16), 1603719. 40 Kim I, Kim C H, Choi S hwa, et al. Journal of Power Sources, 2016, 307, 31. 41 Liu T, Kim K C, Lee B, et al. Energy & Environmental Science, 2017, 10(1), 205. 42 Nie P, Shen L, Pang G, et al. Journal of Materials Chemistry A, 2015, 3(32), 16590. 43 Zeng L, Yao Y, Shi J, et al. Energy Storage Materials, 2016, 5, 50. 44 Huang Y, Fang C, Zeng R, et al. ChemSusChem, 2017, 10(23), 4704. 45 Harris K D, Elias A L, Chung H J. Journal of Materials Science, 2016, 51(6), 2771. 46 Vignarooban K, Kushagra R, Elango A, et al. International Journal of Hydrogen Energy, 2016, 41(4), 2829. 47 Ni'mah Y L, Cheng M Y, Cheng J H, et al. Journal of Power Sources, 2015, 278, 375. 48 Bi S, Sun C, Zawodzinski Jr T A, et al. Journal of Polymer Science Part B: Polymer Physics, 2015, 53(20), 1450. 49 Zhang Z, Xu K, Rong X, et al. Journal of Power Sources, 2017, 372, 270. 50 Yang Y Q, Chang Z, Li M X, et al. Solid State Ionics, 2015, 269, 1. 51 Wang H, Li W, Liu D, et al. Advanced Materials, 2017, 29(45), 1703012. 52 Gao H, Guo B, Song J, et al. Advanced Energy Materials, 2015, 5(9), 1402235. 53 Gao H, Zhou W, Park K, et al. Advanced Energy Materials, 2016, 6(18), 1600467. 54 Kim J K, Lim Y J, Kim H, et al. Energy & Environmental Science, 2015, 8(12), 3589. 55 Yi Q, Zhang W, Li S, et al. ACS Applied Materials & Interfaces, 2018, 10(41), 35039. 56 Zhang Y, Zhao Y, Ren J, et al. Advanced Materials, 2016, 28(22), 4524. 57 Dong S, Shen L, Li H, et al. Journal of Materials Chemistry A, 2015, 3(42), 21277. 58 Yuan S, Huang X, Ma D, et al. Advanced Materials, 2014, 26(14), 2273. 59 Liu W, Chen J, Chen Z, et al. Advanced Energy Materials, 2017, 7(21), 1701076. 60 Xu S, Zhang Y, Cho J, et al. Nature Communications, 2013, 4, 1543. 61 Li H, Ding Y, Ha H, et al. Advanced Materials, 2017, 29(23), 1700898. 62 Guo Z, Zhao Y, Ding Y, et al. Chem, 2017, 3(2), 348. 63 Wei Y, Hu Q, Cao Y, et al. Organic Electronics, 2017, 46, 211. 64 Song Z, Wang X, Lv C, et al. Scientific Reports, 2015, 5, 10988.