Nanosheets Derived through Dissolution‐Recrystallization of TiB₂ as Efficient Anode for Sodium‐Ion Batteries

Abstract

Metal borides when subjected to dissolution and recrystallization exhibit a tendency to grow preferentially in lateral dimensions and form nanosheets. Such derived nanosheets exhibit unusual properties that can potentially be used in energy conversion and storage applications. Here we report boride-based nanosheets derived from titanium diboride through a scalable one-pot chemical approach as a sodium-ion battery anode material. The half-cell with TiB 2 -derived nanosheets (TiB 2 -NS) as anode delivers an initial discharge capacity of 252 mAh g À 1 at 0.1 A g À 1 , and appreciable cycling stability is achieved at 1 A g À 1 current density. Further, a sodium-ion full cell assembled with TiB 2 -NS as anode and sodium vanadium phosphate/carbon as cathode is demonstrated. The full cell delivers an energy density of 111 Wh kg À 1 at a power density of 500 W kg À 1 . Being the first report of its kind, our study exemplifies the rich potential that the TiB 2 -NS deliver as an anode material upon nanoscaling and substantiates the theoretical prediction on using transition metal boride-based anode material for sodium-ion battery.

Quasi-Two-Dimensional Nanostructures from AlB2-Type Metal Borides: Physicochemical Insights and Emerging Trends

“…In a recent study, Suriyakumar and co-workers have demonstrated TiB 2 nanosheets as a sodium-ion battery anode material for battery applications. 64 Their results revealed that the TiB 2 nanosheet-based anode delivers an initial discharge capacity of 252 mAh/g at 0.1 A/g, as demonstrated in Figure 15A. This study exemplifies the rich potential of TiB 2 nanosheets as an anode material for sodium-ion batteries.…”

“…The studies on layered metal diborides reveal their superior performance in energy storage (LIBs/SIBs, supercapacitors) applications due to improved electrode kinetics, high electroactive surface area, electrolytic stability, and charge transport. , So far, layered metal diborides have been less investigated for energy storage and conversion applications than transition-metal carbides, nitrides, and phosphides. In a recent study, Suriyakumar and co-workers have demonstrated TiB 2 nanosheets as a sodium-ion battery anode material for battery applications . Their results revealed that the TiB 2 nanosheet-based anode delivers an initial discharge capacity of 252 mAh/g at 0.1 A/g, as demonstrated in Figure A.…”

Titanium Diboride-Based Hierarchical Nanosheets as Anode Material for Li-Ion Batteries

“…We have previously reported the electrochemical performance of titanium diboride (TiB 2 )based hierarchical nanosheets (THNS) as anode materials for Na-ion batteries (SIBs). 32 However, to the best of our knowledge, no experimental literature is available on any TMD nanostructures as LIB anode.…”

“…Similarly, several theoretical studies on MBenes (2D-Mo 2 B 2 and Fe 2 B 2 ) and monolayer TMDs present their rich candidacy as an active anode for Li- and Na-ion batteries, respectively. We have previously reported the electrochemical performance of titanium diboride (TiB 2 )-based hierarchical nanosheets (THNS) as anode materials for Na-ion batteries (SIBs) . However, to the best of our knowledge, no experimental literature is available on any TMD nanostructures as LIB anode.…”

Local structure and ion storage properties of vanadate cathode materials regulated by the pre-alkalization

“…Recently, a dissolution-recrystallization approach has been reported to prepare TMOs and metal boride electrode materials. [29][30][31][32] The method involves the treatment of TMOs and metal boride bulk raw materials with solutions of alkali and alkaline earth metal salt solution. The bulk raw materials, when subjected to dissolution and recrystallization in the aqueous solution in the presence of alkali metal salts, alkaline earth metal salts, or even conductive polymers, 33 tend to grow preferentially in lateral dimensions.…”