[1] [1] Liu Y-Y, Xu L, Guo X-T, Lv T-T, Pang H. Vanadium sulfide based materials: synthesis, energy storage and conversion. J Mater Chem A. 2020;8:20781.10.1039/D0TA07436E

[2] [2] Zhang Y, Shao R, Xu W, Ding J, Wang Y, Yan X, Shi W, Wang M. Soluble salt assisted synthesis of hierarchical porous carbon-encapsulated Fe3C based on MOFs gel for all-solid-state hybrid supercapacitor. Chem Eng J. 2021;419:129576.10.1016/j.cej.2021.129576

[3] [3] Yan Y, Zhou Y, Li Y, Liu Y. The new focus of energy storage: flexible wearable supercapacitors. Carbon Lett. 2023;33:1461.10.1007/s42823-023-00554-8

[4] [4] Subhadarshini S, Pavitra E, Rama Raju GS, Chodankar NR, Goswami DK, Han Y-K, Huh YS, Das NC. One-dimensional NiSe–Se hollow nanotubular architecture as a binder-free cathode with enhanced redox reactions for high-performance hybrid supercapacitors. ACS Appl Mater Interfaces. 2020;12:29302.

[5] [5] Noh SH, Lee HB, Lee KS, Lee H, Han TH. Sub-second Joule-heated RuO2-decorated nitrogen-and sulfur-doped graphene fibers for flexible fiber-type supercapacitors. ACS Appl Mater Interfaces. 2022;14:29867.10.1021/acsami.2c06691

[6] [6] Guan T, Li Z, Qiu D, Wu G, Wu J, Zhu L, Zhu M, Bao N. Recent progress of graphene fiber/fabric supercapacitors: from building block architecture, fiber assembly, and fabric construction to wearable applications. Adv Fiber Mater. 2023;5:896.10.1007/s42765-023-00262-y

[7] [7] Ma Y, Xie X, Yang W, Yu Z, Sun X, Zhang Y, Yang X, Kimura H, Hou C, Guo Z. Recent advances in transition metal oxides with different dimensions as electrodes for high-performance supercapacitors. Adv Compos Hybrid Mater. 2021;4:906.10.1007/s42114-021-00358-2

[8] [8] Attia SY, Mohamed SG, Barakat YF, Hassan HH, Zoubi WA. Supercapacitor electrode materials: addressing challenges in mechanism and charge storage. Rev Inorg Chem. 2022;42:53.10.1515/revic-2020-0022

[9] [9] Du L, Yang P, Yu X, Liu P, Song J, Mai W. Flexible supercapacitors based on carbon nanotube/MnO2 nanotube hybrid porous films for wearable electronic devices. J Mater Chem A. 2014;2:17561.10.1039/C4TA04431B

[10] [10] Wang Q, Yan J, Fan Z. Carbon materials for high volumetric performance supercapacitors: design, progress, challenges and opportunities. Energy Environ Sci. 2016;9:729.10.1039/C5EE03109E

[11] [11] Pathak M, Rout CS. Hierarchical NiCo2S4 nanostructures anchored on nanocarbons and Ti3C2Tx MXene for high-performance flexible solid-state asymmetric supercapacitors. Adv Compos Hybrid Mater. 2022;5:1404.10.1007/s42114-022-00466-7

[12] [12] Chatterjee DP, Nandi AK. A review on the recent advances in hybrid supercapacitors. J Mater Chem A. 2021;9:15880.10.1039/D1TA02505H

[13] [13] Patil SS, Bhat TS, Teli AM, Beknalkar SA, Dhavale SB, Faras MM, Karanjkar MM, Patil PS. Hybrid solid state supercapacitors (HSSC’s) for high energy & power density: an overview. Eng Sci. 2020;12:38.

[14] [14] Muzaffar A, Ahamed MB, Deshmukh K, Thirumalai J. A review on recent advances in hybrid supercapacitors: design, fabrication and applications. Renew Sustain Energy Rev. 2019;101:123.10.1016/j.rser.2018.10.026

[15] [15] Wang Y, Song Y, Xia Y. Electrochemical capacitors: mechanism, materials, systems, characterization and applications. Chem Soc Rev. 2016;45:5925.10.1039/C5CS00580A

[16] [16] Wang Y, Xia Y. Recent progress in supercapacitors: from materials design to system construction. Adv Mater. 2013;25:5336.10.1002/adma.201301932

[17] [17] Liu H, Liu X, Wang S, Liu H-K, Li L. Transition metal based battery-type electrodes in hybrid supercapacitors: a review. Energy Storage Mater. 2020;28:122.10.1016/j.ensm.2020.03.003

[18] [18] Lamiel C, Hussain I, Rabiee H, Ogunsakin OR, Zhang K. Metal-organic framework-derived transition metal chalcogenides (S, Se, and Te): challenges, recent progress, and future directions in electrochemical energy storage and conversion systems. Coord Chem Rev. 2023;480:215030.10.1016/j.ccr.2023.215030

[19] [19] Ali Z, Asif M, Huang X, Tang T, Hou Y. Hierarchically porous Fe2CoSe4 binary-metal selenide for extraordinary rate performance and durable anode of sodium-ion batteries. Adv Mater. 2018;30:1802745.10.1002/adma.201802745

[20] [20] Balamurugan J, Nguyen TT, Aravindan V, Kim NH, Lee SH, Lee JH. All ternary metal selenide nanostructures for high energy flexible charge storage devices. Nano Energy. 2019;65:103999.10.1016/j.nanoen.2019.103999

[21] [21] Morris B, Plovnick R, Wold A. Magnetic susceptibility of some transition metal chalcogenides having the Cr3S4 structure. Solid State Commun. 1969;7:291.10.1016/0038-1098(69)90402-5

[22] [22] Yang C-P, Yin Y-X, Guo Y-G. Elemental selenium for electrochemical energy storage. J Phys Chem Lett. 2015;6:256.10.1021/jz502405h

[23] [23] Du L, Du W, Ren H, Wang N, Yao Z, Shi X, Zhang B, Zai J, Qian X. Honeycomb-like metallic nickel selenide nanosheet arrays as binder-free electrodes for high-performance hybrid asymmetric supercapacitors. J Mater Chem A. 2017;5:22527.10.1039/C7TA06921A

[24] [24] Nguyen TT, Balamurugan J, Aravindan V, Kim NH, Lee JH. Boosting the energy density of flexible solid-state supercapacitors via both ternary NiV2Se4 and NiFe2Se4 nanosheet arrays. Chem Mater. 2019;31:4490.10.1021/acs.chemmater.9b01101

[25] [25] Wang R, Xuan H, Yang J, Zhang G, Xie Z, Liang X, Han P, Wu Y. Controllable synthesis of complex nickel-vanadium selenide three dimensional flower-like structures as an attractive battery-type electrode material for high-performance hybrid supercapacitors. Electrochim Acta. 2021;388:138649.10.1016/j.electacta.2021.138649

[26] [26] Sun Y-A, Chen L-T, Hsu S-Y, Hu C-C, Tsai D-H. Silver nanoparticles-decorating manganese oxide hybrid nanostructures for supercapacitor applications. Langmuir. 2019;35:14203.10.1021/acs.langmuir.9b02409

[27] [27] Cho YG, Hwang C, Cheong DS, Kim YS, Song HK. Gel/solid polymer electrolytes characterized by in situ gelation or polymerization for electrochemical energy systems. Adv Mater. 2019;31:1804909.10.1002/adma.201804909

[28] [28] Alipoori S, Mazinani S, Aboutalebi SH, Sharif F. Review of PVA-based gel polymer electrolytes in flexible solid-state supercapacitors: opportunities and challenges. J Energy Storage. 2020;27:101072.10.1016/j.est.2019.101072

[29] [29] Raju GSR, Pavitra E, Yu JS. Facile template free synthesis of Gd2O(CO3)2·H2O chrysanthemum-like nanoflowers and luminescence properties of corresponding Gd2O3: RE3+ spheres. Dalton Trans. 2013;42:11400.10.1039/c3dt51154e

[30] [30] Gopalakrishnan A, Badhulika S. Hierarchical architectured dahlia flower-like NiCo2O4/NiCoSe2 as a bifunctional electrode for high-energy supercapacitor and methanol fuel cell application. Energy Fuels. 2021;35:9646.10.1021/acs.energyfuels.1c00498

[31] [31] Liu Y, Yang P, Wang W, Dong H, Lin J. Fabrication and photoluminescence properties of hollow Gd2O3: Ln (Ln= Eu3+, Sm3+) spheres via a sacrificial template method. CrystEngComm. 2010;12:3717.10.1039/c0ce00145g

[32] [32] Di W, Ren X, Zhang L, Liu C, Lu S. A facile template-free route to fabricate highly luminescent mesoporous gadolinium oxides. CrystEngComm. 2011;13:4831.10.1039/c1ce05435j

[33] [33] Merum D, Nallapureddy RR, Pallavolu MR, Mandal TK, Gutturu RR, Parvin N, Banerjee AN, Joo SW. Pseudocapacitive performance of freestanding Ni3V2O8 nanosheets for high energy and power density asymmetric supercapacitors. ACS Appl Energy Mater. 2022;5:5561.10.1021/acsaem.1c03754

[34] [34] Rakov D, Sun C, Lu Z, Li S, Xu P. NiSe@ Ni1−xFexSe2 Core–shell nanostructures as a bifunctional water splitting electrocatalyst in alkaline media. Adv Energy Sustain Res. 2021;2:2100071.10.1002/aesr.202100071

[35] [35] Kwak IH, Im HS, Jang DM, Kim YW, Park K, Lim YR, Cha EH, Park J. CoSe2 and NiSe2 nanocrystals as superior bifunctional catalysts for electrochemical and photoelectrochemical water splitting. ACS Appl Mater Interfaces. 2016;8:5327.10.1021/acsami.5b12093

[36] [36] Taherinia D, Hatami H, Mirzaee Valadi F, Akbarzadeh E. NiSe2 nanoparticles supported on halloysite sheets as an efficient electrocatalyst toward alkaline oxygen evolution reaction. Energy Fuels. 2022;36:14331.10.1021/acs.energyfuels.2c02734

[37] [37] Barjola A, Rapeyko A, Sahuquillo O, LlabrésiXamena FX, Giménez E. AgBTC MOF-mediated approach to synthesize silver nanoparticles decorated on reduced graphene oxide (rGO@Ag) for energy storage applications. ACS Appl Energy Mater. 2023;6:9159.10.1021/acsaem.2c03872

[38] [38] Mathis TS, Kurra N, Wang X, Pinto D, Simon P, Gogotsi Y. Energy storage data reporting in perspective—guidelines for interpreting the performance of electrochemical energy storage systems. Adv Energy Mater. 2019;9:1902007.10.1002/aenm.201902007

[39] [39] Sung Y-S, Lin L-Y. Systematic design of polypyrrole/carbon fiber electrodes for efficient flexible fiber-type solid-state supercapacitors. Nanomaterials. 2020;10:248.10.3390/nano10020248

[40] [40] Li M, Yuan P, Guo S, Liu F, Cheng J. Design and synthesis of Ni-Co and Ni-Mn layered double hydroxides hollow microspheres for supercapacitor. Int J Hydrogen Energy. 2017;42:28797.10.1016/j.ijhydene.2017.10.019

[41] [41] Wang R, Li X, Nie Z, Jing Q, Zhao Y, Song H, Wang H. Ag nanoparticles-decorated hierarchical porous carbon from cornstalk for high-performance supercapacitor. J Energy Storage. 2022;51:104364.10.1016/j.est.2022.104364

[42] [42] Montes-Hernandez G, Di Girolamo M, Sarret G, Bureau S, Fernandez-Martinez A, Lelong C, Eymard VE. In situ formation of silver nanoparticles (Ag-NPs) onto textile fibers. ACS Omega. 2021;6:1316.10.1021/acsomega.0c04814

[43] [43] Liu J, Wang J, Xu C, Jiang H, Li C, Zhang L, Lin J, Shen ZX. Advanced energy storage devices: basic principles, analytical methods, and rational materials design. Adv Sci. 2018;5:1700322.10.1002/advs.201700322

[44] [44] Augustyn V, Come J, Lowe MA, Kim JW, Taberna P-L, Tolbert SH, Abruña HD, Simon P, Dunn B. High-rate electrochemical energy storage through Li+ intercalation pseudocapacitance. Nat Mater. 2013;12:518.10.1038/nmat3601

[45] [45] Wang H, Liang M, Duan D, Shi W, Song Y, Sun Z. Rose-like Ni3S4 as battery-type electrode for hybrid supercapacitor with excellent charge storage performance. Chem Eng J. 2018;350:523.10.1016/j.cej.2018.05.004

[46] [46] Aldama I, Barranco V, Ibáñez J, Amarilla JM, Rojo J. A procedure for evaluating the capacity associated with battery-type electrode and supercapacitor-type one in composite electrodes. J Electrochem Soc. 2018;165:A4034.10.1149/2.1131816jes

[47] [47] Iqbal MZ, Haider SS, Siddique S, Karim MRA, Zakar S, Tayyab M, Faisal MM, Sulman M, Khan A, Baghayeri M. Capacitive and diffusion-controlled mechanism of strontium oxide based symmetric and asymmetric devices. J Energy Storage. 2020;27:101056.10.1016/j.est.2019.101056

[48] [48] Nagaraju G, Chandra Sekhar S, Krishna Bharat L, Yu JS. Wearable fabrics with self-branched bimetallic layered double hydroxide coaxial nanostructures for hybrid supercapacitors. ACS Nano. 2017;11:10860.10.1021/acsnano.7b04368

[49] [49] Naeem Ashiq M, Aman A, Alshahrani T, Faisal Iqbal M, Razzaq A, Najam-Ul-Haq M, Shah A, Nisar J, Tyagi D, Fahad EM. Enhanced electrochemical properties of silver-coated zirconia nanoparticles for supercapacitor application. J Taibah Univ Sci. 2021;15:10.10.1080/16583655.2020.1867338

[50] [50] Yun C, Hwang S. Analysis of the charging current in cyclic voltammetry and supercapacitor’s galvanostatic charging profile based on a constant-phase element. ACS Omega. 2020;6:367.10.1021/acsomega.0c04702

[51] [51] Peng H, Wei C, Wang K, Meng T, Ma G, Lei Z, Gong X. Ni0.85Se@ MoSe2 nanosheet arrays as the electrode for high-performance supercapacitors. ACS Appl Mater Interfaces. 2017;9:17067.10.1021/acsami.7b02776

[52] [52] Wu X, Zeng F, Song X, Sha X, Zhou H, Zhang X, Liu Z, Yu M, Jiang C. In-situ growth of Ni(OH)2 nanoplates on highly oxidized graphene for all-solid-state flexible supercapacitors. Chem Eng J. 2023;456:140947.10.1016/j.cej.2022.140947

[53] [53] Pan J, Li S, Zhang L, Li F, Yan E, Zhang D. Rational construction of ZnCo-ZIF-derived ZnS@CoS@NiV-LDH/NF binder-free electrodes via core–shell design for supercapacitor applications with enhanced rate capability. ACS Appl Energy Mater. 2022;5:6886.10.1021/acsaem.2c00508

[54] [54] Yuan Y, Chen R, Zhang H, Liu Q, Liu J, Yu J, Wang C, Sun Z, Wang J. Hierarchical NiSe@ Co2(CO3)(OH)2 heterogeneous nanowire arrays on nickel foam as electrode with high areal capacitance for hybrid supercapacitors. Electrochim Acta. 2019;294:325.10.1016/j.electacta.2018.10.058

[55] [55] Ye B, Gong C, Huang M, Ge J, Fan L, Lin J, Wu J. A high-performance asymmetric supercapacitor based on Ni3S2-coated NiSe arrays as positive electrode. New J Chem. 2019;43:2389.10.1039/C8NJ05399E

[56] [56] Nagaraju G, Cha SM, Sekhar SC, Yu JS. Metallic layered polyester fabric enabled nickel selenide nanostructures as highly conductive and binderless electrode with superior energy storage performance. Adv Energy Mater. 2017;7:1601362.10.1002/aenm.201601362