Band engineering enhances the electrochemical properties by constructing TiO NRs-MoS NSFs flexible electrode.

Research and development of flexible electrodes with high performance are crucial to largely determine the performance of flexible lithium-ion batteries (FLIBs) to a large extent. In this work, a flexible anode (TiO NRs-MoS NSFs/CC) is rationally designed and successfully constructed, in which TiO nanorods arrays (NRs) vertically grown on CC as a supporting backbone for MoS nanosheets flowers (NSFs) to form a TiO NRs-MoS NSFs heterostructure. The backbone can not only serve as a mechanical support MoS and improve its electronic conductivity, but also limit the dissolution of polysulfides issue during cycling.

Zinc Single-Atom-Regulated Hard Carbons for High-Rate and Low-Temperature Sodium-Ion Batteries.

Hard carbons, as one of the most commercializable anode materials for sodium-ion batteries (SIBs), have to deal with the trade-off between the rate capability and specific capacity or initial Columbic efficiency (ICE), and the fast performance decline at low temperature (LT) remains poorly understood. Here, a comprehensive regulation on the interfacial/bulk electrochemistry of hard carbons through atomic Zn doping is reported, which demonstrates a record-high reversible capacity (546 mAh g ), decent ICE (84%), remarkable rate capability (140 mAh g @ 50 A g ), and excellent LT capacity (443 mAh g @ -40 °C), outperforming the state-of-the-art literature. This work reveals that the Zn doping can generally induce a local electric field to enable fast bulk Na transportation, and meanwhile catalyze the decomposition of NaPF to form a robust inorganic-rich solid-electrolyte interphase, which elaborates the underlying origin of the boosted electrochemical performance.

Electronic synergy to boost the performance of NiCoP-NWs@FeCoP-NSs anodes for flexible lithium-ion batteries.

Research and development of flexible lithium-ion batteries (LIBs) with high energy density and long cycle life for portable and wearable electronic devices has been a cutting-edge effort in recent years. In this paper, a novel flexible self-standing anode for LIBs is fabricated successfully, in which NiCoP nanowires (NWs) coated with FeCoP nanosheets (NSs) to form core-shell heterostructure arrays are grown on carbon cloth (CC) (designated as NiCoP-NWs@FeCoP-NSs/CC). The obtained NiCoP-NWs@FeCoP-NSs/CC anode integrates the merits of the one-dimensional (1D) NiCoP-NW core and two-dimensional (2D) FeCoP-NS shell and the CC to show a high lithium-ion storage capacity with long-term cycling stability (1172.

Rational Design and Synthesis of Ultra-Thin β-Ni(OH) Nanoplates for High Performance All-Solid-State Flexible Supercapacitors.

The all-solid-state flexible supercapacitor (AFSC), one of the most flourishing energy storage devices for portable and wearable electronics, attracts substantial attentions due to their high flexibility, compact size, improved safety, and environmental friendliness. Nevertheless, the current AFSCs usually show low energy density, which extremely hinders their practical applications. Herein, ultra-thin β-Ni(OH) nanoplates with thickness of 2.

VO Nanowire Composite Paper as a High-Performance Lithium-Ion Battery Cathode.

Ultralong, as long as ∼1 mm, orthorhombic vanadium pentoxide (VO) nanowires were synthesized using a hydrothermal method. Free-standing and binder-free composite paper was prepared on a large scale by a two-step reduction method using free-standing VO nanowires as the skeleton and reduced graphene oxide (rGO) nanosheets as the additive. Such a free-standing VO/rGO composite paper as a cathode for lithium ion batteries possesses both structural integrity and extraordinary electrochemical performance.

Dynamic Octahedral Breathing in Oxygen-Deficient Ba(0.9)Co(0.7)Fe(0.2)Nb(0.1)O(3-δ) Perovskite Performing as a Cathode in Intermediate-Temperature SOFC.

Ba(0.9)Co(0.7)Fe(0.