The general synthesis of Ag nanoparticles anchored on silver vanadium oxides: towards high performance cathodes for lithium-ion batteries

Abstract

A general approach has been developed to synthesize a series of silver vanadium oxides (SVOs) anchored with Ag nanoparticles (including AgVO3, Ag2V4O11, Ag0.33V2O5 and Ag1.2V3O8), which exhibit highly improved electrochemical performances.

Electrospun Single Crystalline Fork-Like K2V8O21 as High-Performance Cathode Materials for Lithium-Ion Batteries

“…As important cathode candidates in LIBs, vanadium oxides and vanadate have attracted extensive interests owing to their abundant reservation, high specific capacity, and high Li + diffusion efficiency (Maingot et al, 1993; Torardi and Miao, 2002; Ng et al, 2007; Liu et al, 2009; Mai et al, 2010a,b; Wee et al, 2010; Liu and Yang, 2011; Pan et al, 2011a; Rui et al, 2011; Varadaraajan et al, 2011; Wang et al, 2011; Liang et al, 2013b; Jian et al, 2014; Zhou et al, 2014; Meng et al, 2016; An et al, 2017). For example, vanadium pentoxide (V 2 O 5 ) has a high theoretical capacity of 442 mA h g −1 , but its commercialization is still limited by poor cyclic stability (Owens et al, 1999; Cao et al, 2005; Wang et al, 2006).…”

“…Many studies have demonstrated that the incorporation of metal cations (such as Li + , Na + , K + , Ag + , Zn 2+ , Cu 2+ , etc.) (Ma et al, 2008; Liu and Tang, 2009; Cheng and Chen, 2011; Liang et al, 2013a, 2014; Bach et al, 2014; Yang et al, 2016) into V 2 O 5 interlayers is favorable to improve the electronic conductivity (Zhou et al, 2014), simultaneously creating more Li + intercalation channels (Khoo et al, 2010) and improve the structural stability (Pan et al, 2011b). It was reported that introduction of K + into vanadium oxygen layers is effective to deliver high specific capacity and excellent reversibility by the pillar effect and larger interlamellar space (Baddour-Hadjean et al, 2011, 2014; Xu et al, 2012, 2015; Fang et al, 2015, 2016; Meng et al, 2016).…”

Nano Silver Vanadate AgVO3: Synthesis, New Functionalities and Applications

“…A facile, general and scalable strategy to prepare Ag nanoparticles anchored on silver vanadium oxides (SVOs), including AgVO 3 , Ag 2 V 4 O 11 , Ag 0.33 V 2 O 5 and Ag 1.2 V 3 O 8 ,was developed . The preparation included the addition of NH 4 VO 3 powder to a solution of H 2 O 2 in deionized water, and after reaction, the authors observed the formation of a bright‐yellow solution.…”

“…The as‐obtained Ag/SVO hybrids demonstrated highly improved electrochemical properties because of the enhanced electron conductivity. For example, the Ag/AgVO 3 hybrid exhibited excellent rate capability: a high specific discharge capacity of 199 mA h g −1 can be reached at an ultra‐high discharge current density of 5 A g −1 …”

Hydrothermal synthesis of sodium vanadate nanobelts as high-performance cathode materials for lithium batteries

“…Recent studies imply that doping metal cations into V 2 O 5 layers is conducive to stable the whole structure [14], create more intercalation sites [15], or improve the intrinsic conductivity [16]. Considering these advantages, vanadate cathode materials have been intensively studied in the past few years [17e21].…”