2022
DOI: 10.1002/aenm.202201130
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Unprecedented Superhigh‐Rate and Ultrastable Anode for High‐Power Battery via Cationic Disordering

Abstract: capacities and low lithiation potentials approaching 0 V versus Li/Li + are favored for high-energy applications. [3] Their specific capacities decrease drastically when they are charged and discharged at high rates. For example, the specific capacity of graphite drops from 350 mAh g −1 at 0.2 C to 50 mAh g −1 at 2 C. [4] In addition, their sluggish interfacial kinetics and large spatial overpotential inhomogeneities under fast-charging conditions lead to undesirable plating of the Li dendrites on the electro… Show more

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Cited by 31 publications
(18 citation statements)
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“…Modification of TiNb 2 O 7 via surface coating with electronically conductive carbon has been widely used to accelerate the Li + transport kinetics of electrodes. [20][21][22][23][24][25][26][27] Furthermore, bulk doping with V 5+ and Mo 6+ have been reported to improve the intrinsic ionic conductivity of TiNb 2 O 7 in order to facilitate the Li + diffusion rate in the crystal lattices. [28,29] However, the state and location of dopants in TiNb 2 O 7 are still unclear up to now.…”
Section: Introductionmentioning
confidence: 99%
“…Modification of TiNb 2 O 7 via surface coating with electronically conductive carbon has been widely used to accelerate the Li + transport kinetics of electrodes. [20][21][22][23][24][25][26][27] Furthermore, bulk doping with V 5+ and Mo 6+ have been reported to improve the intrinsic ionic conductivity of TiNb 2 O 7 in order to facilitate the Li + diffusion rate in the crystal lattices. [28,29] However, the state and location of dopants in TiNb 2 O 7 are still unclear up to now.…”
Section: Introductionmentioning
confidence: 99%
“…
phase material with a monoclinic system (space group C2/m), TiNb 2 O 7 possesses a stable Li + diffusion channel structure constructed by ReO 3 -like regions (blocks) of corner-and edge-shared octahedra, and displays highly stable electrochemical lithium extraction/insertion behavior (Figure S1, Supporting Information). [11][12][13][14][15] TiNb 2 O 7 exhibits a comparable lithiation potential slope between 1-2 V (≈1.5 V on average, vs Li + /Li) to Li 4 Ti 5 O 12 , which is widely considered a good fastcharging battery anode (Figure 1a). [16][17][18][19] Also, it delivers a theoretical capacity of 387.6 mAh g −1 , which is over double that of Li 4 Ti 5 O 12 and slightly higher than mostly used graphite anode in commercial lithium-ion batteries.
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mentioning
confidence: 99%
“…Rechargeable zinc-air batteries (ZABs), which convert chemicals into electrochemical energy through oxygen reduction and evolution reactions (ORR and OER), are an important technique with great promise in the future energy system due to their high energy density and excellent safety. The ORR/OER reactions are generally kinetically sluggish and require a large overpotential, resulting in unsatisfying power density and poor durability of this device [1][2][3][4][5][6][7]. These reactions are conventionally accelerated by precious metal-based catalysts such as Pt (for ORR), Ru, and Ir (for OER).…”
Section: Introductionmentioning
confidence: 99%