[1] [1] DUBAL D P, AYYAD O, RUIZ V, et al. Hybrid energy storage: the merging of battery and supercapacitor chemistries［J］. Chemical Society Reviews, 2015, 44(7): 1777-1790.

[2] [2] SIMON P, GOGOTSI Y. Materials for electrochemical capacitors［J］. Nature Materials, 2008, 7(11): 845-854.

[3] [3] CHAUDHARI N K, JIN H, KIM B, et al. MXene: an emerging two-dimensional material for future energy conversion and storage applications［J］. Journal of Materials Chemistry A, 2017, 5(47): 24564-24579.

[4] [4] XIONG D B, LI X F, BAI Z M, et al. Recent advances in layered Ti3C2Tx MXene for electrochemical energy storage［J］. Small, 2018, 14(17): 1703419.

[5] [5] NAGUIB M, KURTOGLU M, PRESSER V, et al. Two-dimensional nanocrystals produced by exfoliation of Ti3AlC2［J］. Advanced Materials, 2011, 23(37): 4248-4253.

[6] [6] ZHANG J Z, KONG N, UZUN S, et al. Scalable manufacturing of free-standing, strong Ti3C2Tx MXene films with outstanding conductivity［J］. Advanced Materials, 2020, 32(23): 2001093.

[7] [7] LUKATSKAYA M R, KOTA S, LIN Z F, et al. Ultra-high-rate pseudocapacitive energy storage in two-dimensional transition metal carbides［J］. Nature Energy, 2017, 2: 17105.

[8] [8] ZHAO M Q, REN C E, LING Z, et al. Flexible MXene/carbon nanotube composite paper with high volumetric capacitance［J］. Advanced Materials, 2015, 27(2): 339-345.

[9] [9] DENG Y Q, SHANG T X, WU Z T, et al. Fast gelation of Ti3C2Tx MXene initiated by metal ions［J］. Advanced Materials, 2019, 31(43): 1902432.

[10] [10] YANG X, YAO Y W, WANG Q, et al. 3D macroporous oxidation-resistant Ti3C2Tx MXene hybrid hydrogels for enhanced supercapacitive performances with ultralong cycle life［J］. Advanced Functional Materials, 2021, 32(10): 2109479.

[11] [11] WU X Y, HAN B Y, ZHANG H B, et al. Compressible, durable and conductive polydimethylsiloxane-coated MXene foams for high-performance electromagnetic interference shielding［J］. Chemical Engineering Journal, 2020, 381: 122622.

[12] [12] YANG M L, YUAN Y, LI Y, et al. Anisotropic electromagnetic absorption of aligned Ti3C2Tx MXene/gelatin nanocomposite aerogels［J］. ACS Applied Materials Interfaces, 2020, 12(29): 33128-33138.

[13] [13] CAI C Y, WEI Z C, DENG L X, et al. Temperature-invariant superelastic multifunctional MXene aerogels for high-performance photoresponsive supercapacitors and wearable strain sensors［J］. ACS Applied Materials Interfaces, 2021, 13(45): 54170-54184.

[14] [14] HUANG X W, HUANG J H, YANG D, et al. A multi-scale structural engineering strategy for high-performance MXene hydrogel supercapacitor electrode［J］. Advanced Science, 2021, 8(18): 2101664.

[15] [15] MARCANO D C, KOSYNKIN D V, BERLIN J M, et al. Improved synthesis of graphene oxide［J］. ACS Nano, 2010, 4(8): 4806-4814.

[16] [16] YAN J, REN C E, MALESKI K, et al. Flexible MXene/graphene films for ultrafast supercapacitors with outstanding volumetric capacitance［J］. Advanced Functional Materials, 2017, 27(30): 1701264.

[17] [17] SHAHZAD F, ALHABEB M, HATTER C B, et al. Electromagnetic interference shielding with 2D transition metal carbides (MXenes)［J］. Science, 2016, 353(6304): 1137-1140.

[18] [18] LI W, LI X F, CHANG W, et al. Vertically aligned reduced graphene oxide/Ti3C2Tx MXene hybrid hydrogel for highly efficient solar steam generation［J］. Nano Research, 2020, 13(11): 3048-3056.

[19] [19] LIANG L Y, LI Q M, YAN X, et al. Multifunctional magnetic Ti3C2Tx MXene/graphene aerogel with superior electromagnetic wave absorption performance［J］. ACS Nano, 2021, 15(4): 6622-6632.