Microporous nitrogen-doped carbons produced by hydrothermal carbonization of biomass derivative followed chemical activation showed excellent supercapacitive capacitance performance both in acid and base electrolytes. Detailed facts importance to specialist readers are published as "Supporting Information". Such documents peer-reviewed, but not copy-edited or typeset. They made available submitted the authors. Please note: The publisher is responsible for content functionality any supporting...

Lithium metal is considered a “Holy Grail” of anode materials for high‐energy‐density batteries. However, both dendritic lithium deposition and infinity dimension change during long‐term cycling have extremely restricted its practical applications energy storage devices. Here, thermal infusion strategy prestoring into stable nickel foam host demonstrated composite achieved. In comparison with the bare lithium, exhibits voltage profiles (200 mV at 5.0 mA cm −2 ) small hysteresis beyond 100...

Abstract A high‐performance polyaniline electrode was prepared by potentiostatic deposition of aniline on a hierarchically porous carbon monolith (HPCM), which carbonized from the mesophase pitch. capacitance value as high 2200 F g –1 (per weight polyaniline) is obtained at power density 0.47 kW kg and an energy 300 W h . This active material deposited HPCM also has advantageous stability. These properties can be essentially attributed to backbone role HPCM. The method advantage topology...

Abstract Thin solid‐state electrolytes with nonflammability, high ionic conductivity, low interfacial resistance, and good processability are urgently required for next‐generation safe, energy density lithium metal batteries. Here, a 3D Li 6.75 La 3 Zr 1.75 Ta 0.25 O 12 (LLZTO) self‐supporting framework interconnected by polytetrafluoroethylene (PTFE) binder is prepared through simple grinding method without any solvent. Subsequently, garnet‐based composite electrolyte achieved filling the...

Abstract Solid‐state lithium (Li) batteries using solid electrolytes and Li anodes are highly desirable because of their high energy densities intrinsic safety. However, low ambient‐temperature conductivity poor interface compatibility as well dendrite formation cause large polarization cycling stability. Herein, a transference number intercalated composite electrolyte (CSE) is prepared by the combination solution‐casting hot‐pressing method layered montmorillonite, poly(ethylene carbonate),...

Replacement of flammable organic liquid electrolytes with solid Li+ conductors is a promising approach to realize excellent performance Li metal batteries. However, ceramic are either easily reduced by or penetrated dendrites through their grain boundaries, and polymer also faced instability on the electrode/electrolyte interface weak mechanical property. Here, we report three-dimensional fiber-network-reinforced bicontinuous composite electrolyte flexible Li+-conductive network (lithium...

Abstract Sodium (Na) metal, which possesses a high theoretical capacity and the lowest electrochemical potential, is regarded as promising anode material for Na–metal batteries. However, both Na dendrite growth large volume change in cycling have severely impeded its practical applications. This study demonstrates that 3D flexible carbon (C) felt already commercialized large‐scale can be employed host prestoring via melt infusion strategy, through Na/C composite obtained. The resulting...

We demonstrate a simple approach for fabricating novel free-standing magnetic and conductive graphene hybrid papers that present great potential as thin layers with effective shielding performance.

Abstract Rechargeable magnesium batteries (RMBs), which have attracted tremendous attention in large‐scale energy storage applications beyond lithium ion batteries, many advantages such as high volumetric capacity, low cost, and environmental friendliness. However, the strong polarization effect, slow kinetic de‐intercalation of Mg 2+ ions, incompatibility between electrodes electrolytes limit their commercial application. Thus, developing stable high‐efficiency electrode materials...

Lightweight carbon materials of effective electromagnetic interference (EMI) shielding have attracted increasing interest because rapid development smart communication devices. To meet the requirement in portable electronic devices, flexible with ultrathin characteristic been pursued for this purpose. In work, we demonstrated a facile strategy scalable fabrication all-carbon networks, where insulting polymeric frames and interfaces well eliminated. Microscopically, novel nanofiber-graphene...

Abstract Solid‐state polymer electrolytes (SPEs) with flexibility, easy processability, and low cost have been regarded as promising alternatives for conventional liquid in next‐generation high‐safety lithium metal batteries. However, SPEs generally suffer poor strength to block Li dendrite growth during the charge/discharge process, which severely limits their wide practical applications. Here, a rational design of 3D cross‐linked network asymmetric SPE modified metal–organic framework...

Abstract Maricite NaFePO 4 nanodots with minimized sizes (≈1.6 nm) uniformly embedded in porous N‐doped carbon nanofibers (designated as @C) are first prepared by electrospinning for maximized Na‐storage performance. The obtained flexible @C fiber membrane adherent on aluminum foil is directly used binder‐free cathode sodium‐ion batteries, revealing that the ultrasmall nanosize effect well a high‐potential desodiation process can transform generally perceived electrochemically inactive...