An Intrinsically Self-Healing NiCo||Zn Rechargeable Battery with a Self-Healable Ferric-Ion-Crosslinking Sodium Polyacrylate Hydrogel Electrolyte.

Self-healing solid-state aqueous rechargeable NiCo||Zn batteries are inherently safe and have a high energy density and mechanical robustness. However, the self-healability of solid-state batteries has only been realized by a few studies in which electron/ion-inactive self-healable substrates are utilized. This arises from the lack of self-healable electrolytes. Now an intrinsically self-healing battery has been designed that utilizes a new electrolyte that is intrinsically self-healable. Sodium polyacrylate hydrogel chains are crosslinked by ferric ions to promote dynamic reconstruction of an integral network. These non-covalent crosslinkers can form ionic bonds to reconnect damaged surfaces when the hydrogel is cut off, providing an ultimate solution to the intrinsic self-healability problem of batteries. As a result, this NiCo||Zn battery with this hydrogel electrolyte can be autonomically self-healed with over 87 % of capacity retained after 4 cycles of breaking/healing.

[1]  Jie Yu,et al.  Weavable, Conductive Yarn-Based NiCo//Zn Textile Battery with High Energy Density and Rate Capability. , 2017, ACS nano.

[2]  Joseph F. Parker,et al.  Rechargeable nickel–3D zinc batteries: An energy-dense, safer alternative to lithium-ion , 2017, Science.

[3]  Yang Huang,et al.  An Intrinsically Stretchable and Compressible Supercapacitor Containing a Polyacrylamide Hydrogel Electrolyte. , 2017, Angewandte Chemie.

[4]  Jihyun Hong,et al.  Aqueous rechargeable Li and Na ion batteries. , 2014, Chemical reviews.

[5]  Ralph E. White,et al.  Temperature and Concentration Dependence of the Specific Conductivity of Concentrated Solutions of Potassium Hydroxide , 1997 .

[6]  Faxing Wang,et al.  An Aqueous Rechargeable Zn//Co3O4 Battery with High Energy Density and Good Cycling Behavior , 2016, Advanced materials.

[7]  Olivia R. Cromwell,et al.  Self-healing multiphase polymers via dynamic metal-ligand interactions. , 2014, Journal of the American Chemical Society.

[8]  John Wang,et al.  A Flexible Quasi‐Solid‐State Nickel–Zinc Battery with High Energy and Power Densities Based on 3D Electrode Design , 2016, Advanced materials.

[9]  Hao Sun,et al.  A Self-Healing Aqueous Lithium-Ion Battery. , 2016, Angewandte Chemie.

[10]  J. Choi,et al.  Stabilized Octahedral Frameworks in Layered Double Hydroxides by Solid‐Solution Mixing of Transition Metals , 2017 .

[11]  Zhigang Suo,et al.  Ultrasound-triggered disruption and self-healing of reversibly cross-linked hydrogels for drug delivery and enhanced chemotherapy , 2014, Proceedings of the National Academy of Sciences.

[12]  X. Tao,et al.  Fiber‐Based Wearable Electronics: A Review of Materials, Fabrication, Devices, and Applications , 2014, Advanced materials.

[13]  Zifeng Wang,et al.  A self-healable and highly stretchable supercapacitor based on a dual crosslinked polyelectrolyte , 2015, Nature Communications.

[14]  Y. Tong,et al.  Flexible Ultrafast Aqueous Rechargeable Ni//Bi Battery Based on Highly Durable Single‐Crystalline Bismuth Nanostructured Anode , 2016, Advanced materials.

[15]  Lu Huang,et al.  Synchronous Healing of Li Metal Anode via Asymmetrical Bidirectional Current , 2019, iScience.

[16]  Hongjie Dai,et al.  Recent advances in zinc-air batteries. , 2014, Chemical Society reviews.

[17]  Ye Shi,et al.  A Conductive Self-Healing Hybrid Gel Enabled by Metal-Ligand Supramolecule and Nanostructured Conductive Polymer. , 2015, Nano letters.

[18]  Z. Shen,et al.  A flexible alkaline rechargeable Ni/Fe battery based on graphene foam/carbon nanotubes hybrid film. , 2014, Nano letters.

[19]  S. Ardizzone,et al.  "Inner" and "outer" active surface of RuO2 electrodes , 1990 .

[20]  C. Zhi,et al.  Proton-insertion-enhanced pseudocapacitance based on the assembly structure of tungsten oxide. , 2014, ACS applied materials & interfaces.

[21]  R. Holze,et al.  An aqueous rechargeable lithium battery based on doping and intercalation mechanisms , 2010 .

[22]  Chaodi Xu,et al.  An ultrafast, high capacity and superior longevity Ni/Zn battery constructed on nickel nanowire array film , 2016 .

[23]  Yan Huang,et al.  Toward Enhancing Wearability and Fashion of Wearable Supercapacitor with Modified Polyurethane Artificial Leather Electrolyte , 2018, Nano-micro letters.

[24]  C. Zhi,et al.  A polyacrylamide hydrogel electrolyte enabled intrinsically 1000% stretchable and 50% compressible supercapacitor , 2017 .

[25]  Zhigang Suo,et al.  Ionic skin , 2014, Advanced materials.