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Title: Dramatically enhanced reversibility of Li2O in SnO2-based electrodes: the effect of nanostructure on high initial reversible capacity

Journal Article · · Energy & Environmental Science
DOI:https://doi.org/10.1039/c5ee03367e· OSTI ID:1370140
 [1];  [2];  [2];  [3];  [2];  [2];  [2];  [3];  [3];  [4]
  1. South China Univ. of Technology (SCUT), Guangzhou (China); Georgia Inst. of Technology, Atlanta, GA (United States)
  2. Georgia Inst. of Technology, Atlanta, GA (United States)
  3. South China Univ. of Technology (SCUT), Guangzhou (China)
  4. Georgia Inst. of Technology, Atlanta, GA (United States); South China Univ. of Technology (SCUT), Guangzhou (China)

The formation of irreversible Li2O during discharge is believed to be the main cause of large capacity loss and low Coulombic efficiency of oxide negative electrodes for Li batteries. This assumption may have misguided the development of high-capacity SnO2-based anodes in recent years. In this work we demonstrated that contrary to this perception, Li2O can indeed be highly reversible in a SnO2 electrode with controlled nanostructure and achieved an initial Coulombic efficiency of ~95.5%, much higher than that previously believed to be possible (52.4%). In situ spectroscopic and diffraction analyses corroborate highly reversible electrochemical cycling, suggesting that the interfaces and grain boundaries of nano-sized SnO2 may suppress the coarsening of Sn and enable the conversion between Li2O and Sn to amorphous SnO2 when de-lithiated. These results provide important insight into the rational design of high-performance oxide electrodes for Li-ion batteries.

Research Organization:
Energy Frontier Research Centers (EFRC) (United States). Heterogeneous Functional Materials Center (HeteroFoaM)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES); National Science Foundation (NSF); National Natural Science Foundation of China (NSFC); Doctorate Foundation of Ministry of Education; Foundation for the Author of Excellent Doctoral Dissertation of Guangdong Province
Grant/Contract Number:
SC0001061
OSTI ID:
1370140
Journal Information:
Energy & Environmental Science, Vol. 9, Issue 2; Related Information: HeteroFoaM partners with University of South Carolina (lead); University of California, Santa Barbara; University of Connecticut; Georgia Institute of Technology; Princeton University; Rochester Institute of Technology; Savannah River National Laboratory; University of South Carolina; University of Utah; ISSN 1754-5692
Publisher:
Royal Society of ChemistryCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 267 works
Citation information provided by
Web of Science

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Novel Preparation of N-Doped SnO 2 Nanoparticles via Laser-Assisted Pyrolysis: Demonstration of Exceptional Lithium Storage Properties journal December 2016
Stabilizing the Nanostructure of SnO 2 Anodes by Transition Metals: A Route to Achieve High Initial Coulombic Efficiency and Stable Capacities for Lithium Storage journal February 2017
A Robust and Conductive Black Tin Oxide Nanostructure Makes Efficient Lithium-Ion Batteries Possible journal April 2017
Boron Embedded in Metal Iron Matrix as a Novel Anode Material of Excellent Performance journal July 2018
Li‐Breathing Air Batteries Catalyzed by MnNiFe/Laser‐Induced Graphene Catalysts journal August 2019
From Checkerboard-Like Sand Barriers to 3D Cu@CNF Composite Current Collectors for High-Performance Batteries journal March 2018
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A Robust Route to Co 2 (OH) 2 CO 3 Ultrathin Nanosheets with Superior Lithium Storage Capability Templated by Aspartic Acid‐Functionalized Graphene Oxide journal May 2019
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A Multi‐Wall Sn/SnO 2 @Carbon Hollow Nanofiber Anode Material for High‐Rate and Long‐Life Lithium‐Ion Batteries journal February 2020
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Tin Oxide Based Nanomaterials and Their Application as Anodes in Lithium‐Ion Batteries and Beyond journal August 2019
Si@SnS 2 –Reduced Graphene Oxide Composite Anodes for High‐Capacity Lithium‐Ion Batteries journal November 2019
Ultrahigh Reversibility of SnO 2 in SnO 2 @C Quantum Dots/Graphene Oxide Nanosheets for Lithium Storage journal December 2017
Fe 2 VO 4 Hierarchical Porous Microparticles Prepared via a Facile Surface Solvation Treatment for High-Performance Lithium and Sodium Storage journal January 2019
Applications of Conventional Vibrational Spectroscopic Methods for Batteries Beyond Li-Ion journal March 2018
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Nano-spatially confined and interface-controlled lithiation–delithiation in an in situ formed (SnS–SnS 2 –S)/FLG composite: a route to an ultrafast and cycle-stable anode for lithium-ion batteries journal January 2019
Significantly improved Li-ion diffusion kinetics and reversibility of Li 2 O in a MoO 2 anode: the effects of oxygen vacancy-induced local charge distribution and metal catalysis on lithium storage journal January 2019
Highly reversible lithium storage in a conversion-type ZnCo 2 O 4 anode promoted by NiCl 2−x F x hydrate journal January 2020
A Self-Transition Strategy toward Nanostructured Cu-MoO 2 /rGO Composite as Anodes for Lithium-Ion Batteries with High Initial Coulombic Efficiency and Cycle Stability journal January 2018
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Tin Oxide Based Nanomaterials and Their Application as Anodes in Lithium‐Ion Batteries and Beyond journal August 2019
Si@SnS 2 –Reduced Graphene Oxide Composite Anodes for High‐Capacity Lithium‐Ion Batteries journal November 2019
Ultrafine SnO 2 Nanocrystals Self-Anchored in Carbon for Stable Lithium Storage journal July 2018
Hierarchy Design in Metal Oxides as Anodes for Advanced Lithium-Ion Batteries text January 2018

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