水滑石具有环境友好、合成容易、价格低廉的特点,其独特的层状结构提供了较大的电化学反应活性位面积,具有较高的理论比电容。水滑石与石墨烯复合可以抑制石墨烯片层和水滑石片层的自身堆叠,优化层间距,增加比表面积,提升合成均匀性,并且石墨烯片层可以作为导电骨架增强导电性,弥补水滑石单独作为超级电容电极材料的不足,使水滑石/石墨烯复合材料能够推广应用于超级电容器电极材料。从水滑石的电化学属性、阳离子的选择、成分控制、与石墨烯的复合比、沉淀剂类型、合成助剂等方面进行系统的综述,指出采用掺杂和微乳液、反向胶束合成方法将是提升水滑石/石墨烯复合材料电化学性能的研究方法。
Layered double hydroxides with higher theoretical specific capacitance has the characteristics of environmentally friendly,synthesizing easily and low cost,and provides a large area of electrochemical reactive activity for its unique layered structure.Layered double hydroxides composited with graphene can inhibit stack with itself of graphene layer and hydroxide layer,optimize the layer spacing,increase the specific surface area,promote synthesis uniformity.And graphene layers as conductive skeleton enhanced electrical conductivity,compensate for deficiency of layered double hydroxides as super capacitor electrode materials.The composites will be widely used as supercapacitor electrode materials.The electrochemical properties of layered double hydroxides,selection of cationic ions,composition control,compound ratio of graphene,type of precipitant and synthetic auxiliaries were reviewed.It was expected that doping,microemulsion and reverse micron-beam synthesis will be used to improve the electrochemical properties of composites.
[1] Liu Y,Fu N,Zhang G,et al.Design of hierarchical NiCo@NiCo layered double hydroxide core-shell structured nanotube array for high-performance flexible all-solid-state battery-type supercapacitors[J].Advanced Functional Materials,2017,27(8):1605307.
[2] Vialat P,Mousty C,Taviot-Gueho C,et al.High-performing monometallic cobalt layered double hydroxide supercapacitor with defined local structure[J].Advanced Functional Materials,2014,24(30):4831-4842.
[3] Lai F,Miao Y E,Zuo L,et al.Biomass-derived nitrogen-doped carbon nanofiber network:a facile template for decoration of ultrathin nickel-cobalt layered double hydroxide nanosheets as high-performance asymmetric supercapacitor electrode[J].Small,2016(12):3235-3244.
[4] Yan J,Fan Z,Sun W,et al.Advanced asymmetric supercapacitors based on Ni(OH)2/graphene and porous graphene electrodes with high energy density[J].Advanced Functional Materials,2012,22(12):2632-2641.
[5] Qi D,Liu Y,Liu Z,et al.Design of architectures and materials in in-plane micro-supercapacitors:current status and future challenges[J].Advanced Materials,2017,29(5):1602802.
[6] Liu H,Yu T,Su D,et al.Ultrathin Ni-Al layered double hydroxide nanosheets with enhanced supercapacitor performance[J].Ceramics International,2017,43(16):14395-14400.
[7] Li H,Gao Y,Wang C,al.A simple electrochemical route to access amorphous mixed-metal hydroxides for supercapacitor electrode materials[J].Advanced Energy Materials,2015,5(6):1-9.
[8] Song L,Shi J,Lu J,et al.Structure observation of graphene quantum dots by single-layered formation in layered confinement space[J].Chem Sci,2015,6(8):4846-4850.
[9] Zhang R,An H,Li Z,et al.Mesoporous graphene-layered double hydroxides free-standing films for enhanced flexible supercapacitors[J].Chemical Engineering Journal,Elsevier B.V,2016,289:85-92.
[10] Peng W,Li H,Liu Y,et al.Effect of oxidation degree of graphene oxide on the electrochemical performance of CoAl-layered double hydroxide/graphene composites[J].Applied Materials Today,Elsevier Ltd,2017(7):201-211.
[11] Wang X,Yan C,Sumboja A,et al.Achieving high rate performance in layered hydroxide supercapacitor electrodes[J].Advanced Energy Materials,2014,4(6):1-7.
[12] Lv L,Xu K,Wang C,et al.Intercalation of glucose in NiMn-layered double hydroxide nanosheets:an effective path way towards battery-type electrodes with enhanced performance[J].Electrochimica Acta,Elsevier Ltd,2016,216:35-43.
[13] Lee J H,Lee H J,Lim S Y,et al.Stabilized octahedral frameworks in layered double hydroxides by solid-solution mixing of transition metals[J].Advanced Functional Materials,2017,27(7):1-10.
[14] Gu F,Cheng X,Wang S,et al.Oxidative Intercalation for monometallic Ni2+-Ni3+ layered double hydroxide and enhanced capacitance in exfoliated nanosheets[J].Small,2015,11(17):2044-2050.
[15] Chen J,Xu J,Zhou S,et al.Amorphous nanostructured FeOOH and Co-Ni double hydroxides for high-performance aqueous asymmetric supercapacitors[J].Nano Energy,2016,21:145-153.
[16] Lu Z,Qian L,Tian Y,et al.Ternary NiFeMn layered double hydroxides as highly-efficient oxygen evolution catalysts[J].Chem Commun,2016,52(5):908-911.
[17] Wang X,Lin Y,Su Y,et al.Design and synthesis of ternary-component layered double hydroxides for high-performance supercapacitors:understanding the role of trivalent metal ions[J].Electrochimica Acta,2017,225:263-271.
[18] Li M,Cheng J P P,Liu F,et al.3D-architectured nickel-cobalt-manganese layered double hydroxide/reduced graphene oxide composite for high-performance supercapacitor[J].Chemical Physics Letters,2015,640:5-10.
[19] Li Xuejin,Du Dongfeng,Zhang Yu,et al.Layered double hydroxides toward high-performance supercapacitors[J].Journal of Materials Chemistry A,2017,5(30):15460-15485.
[20] Daud M,Kamal M S,Shehzad F,et al.Graphene/layered double hydroxides nanocomposites:a review of recent progress in synthesis and applications[J].Carbon,Elsevier Ltd,2016,104:241-252.
[21] 段雪,张法智,蒲敏,等.无机超分子材料的插层组装化学[M].北京:科学出版社,2009:18-25.
[22] Ma K,Cheng J P,Zhang J,et al.Dependence of Co/Fe ratios in Co-Fe layered double hydroxides on the structure and capacitive properties[J].Electrochimica Acta,Elsevier Ltd,2016,198:231-240.
[23] Guo X L,Liu X Y,Hao X D,et al.Nickel-manganese layered double hydroxide nanosheets supported on nickel foam for high-performance supercapacitor electrode materials[J].Electrochimica Acta,Elsevier Ltd,2016,194:179-186.
[24] Zhang L,Zhang X,Shen L,et al.Enhanced high-current capacitive behavior of graphene/CoAl-layered double hydroxide composites as electrode material for supercapacitors[J].Journal of Power Sources,Elsevier B.V,2012,199:395-401.
[25] Newman S P,Jones W.Synthesis,characterization and applications of layered double hydroxides containing organic guests[J].New Journal of Chemistry,1998,22:105-115.
[26] Yu C,Yang J,Zhao C,et al.Nanohybrids from NiCoAl-LDH coupled with carbon for pseudocapacitors:understanding the role of nano-structured carbon[J].Nanoscale,2014,6(6):3097-3104.
[27] Vial S,Prevot V,Forano C.Novel route for layered double hydroxides preparation by enzymatic decomposition of urea[J].Journal of Physics and Chemistry of Solids,2006,67(5/6):1048-1053.
[28] Inayat A,Klumpp M,Schwieger W.The urea method for the direct synthesis of ZnAl layered double hydroxides with nitrate as the interlayer anion[J].Applied Clay Science,Elsevier B.V,2011,51(4):452-459.
[29] Lee I,Jeong G H,An S,et al.Facile synthesis of 3D MnNi-layered double hydroxides (LDH)/graphene composites from directly graphites for pseudocapacitor and their electrochemical analysis[J].Applied Surface Science,2018,429:196-202.
[30] Chandrasekaran N I,Muthukumar H,Sekar A D,et al.Hollow nickel-aluminium-manganese layered triple hydroxide nanospheres with tunable architecture for supercapacitor application[J].Materials Chemistry and Physics,Elsevier B.V,2017,195:247-258.
[31] Hibino T,Ohya H.Synthesis of crystalline layered double hydroxides:precipitation by using urea hydrolysis and subsequent hydrothermal reactions in aqueous solutions[J].Applied Clay Science,Elsevier B.V,2009,45(3):123-132.
[32] Yu J,Wang Q,O'Hare D,et al.Preparation of two dimensional layered double hydroxide nanosheets and their applications[J].Chemical Society Reviews,Royal Society of Chemistry,2017,46:5950-5974.
[33] Arai Y,Ogawa M.Preparation of Co-Al layered double hydroxides by the hydrothermal urea method for controlled particle size[J].Applied Clay Science,Elsevier B.V,2009,42(3/4):601-604.
[34] Li T,Li G H,Li L H,et al.Large-scale self-assembly of 3D flower-like hierarchical Ni/Co-LDHs microspheres for high-performance flexible asymmetric supercapacitors[J].ACS Applied Materials and Interfaces,2016,8(4):2562-2572.
[35] Zhang L,Wang J,Zhu J,et al.3D porous layered double hydroxides grown on graphene as advanced electrochemical pseudocapacitor materials[J].Journal of Materials Chemistry A,2013,1(32):9046.
[36] Xie L,Hu Z,Lv C,et al.Co xNi 1-x double hydroxide nanoparticles with ultrahigh specific capacitances as supercapacitor electrode materials[J].Electrochimica Acta,Elsevier Ltd,2012,78:205-211.
[37] Sun X,Wang G,Sun H,et al.Morphology controlled high performance supercapacitor behaviour of the Ni-Co binary hydroxide system[J].Journal of Power Sources,Elsevier B.V,2013,238:150-156.
[38] Hu Z A,Xie Y L,Wang Y X,et al.Synthesis and electrochemical characterization of mesoporous CoxNi1-x layered double hydroxides as electrode materials for supercapacitors[J].Electrochimica Acta,2009,54(10):2737-2741.
[39] Lin W,Yu W,Hu Z,et al.Superior performance asymmetric supercapacitors based on flake-like Co/Al hydrotalcite and graphene[J].Electrochimica Acta,Elsevier Ltd,2014,143:331-339.
[40] Memon J,Sun J,Meng D,et al.Synthesis of graphene/Ni-Al layered double hydroxide nanowires and their application as an electrode material for supercapacitors[J].Journal of Materials Chemistry A,2014,2(14):5060-5067.
PDF
(1226KB)
