TY - JOUR
T1 - Paradigm metallothermic-sulfidation-carbonization constructing ZIFs-derived TMSs@Graphene/CNx heterostructures for high-capacity and long-life energy storage
AU - Zhang, Junfan
AU - Sun, Chunhao
AU - Qu, Shuangquan
AU - Qian, Mengmeng
AU - Zhan, Wei
AU - Su, Anqi
AU - Zhang, Kai
AU - Liu, Qi
AU - Shao, Ruiwen
AU - Wang, Jing
AU - Su, Yuefeng
AU - Huang, Jia Qi
AU - Wu, Feng
AU - Tan, Guoqiang
N1 - Publisher Copyright:
© 2023 Elsevier Ltd
PY - 2023/6/15
Y1 - 2023/6/15
N2 - Enhancing electrochemical activity and structural stability of transition metal sulfides (TMSs) are critical for improving the capacity output and retention of TMSs-based batteries. Here, we report a new paradigmatic approach for fabricating TMSs/C composites, adopting a metallothermic-sulfidation-carbonization strategy (2TM + CS2 = 2TMS + C) based on zeolitic imidazolate frameworks (ZIFs) to synchronously construct a compact TMSs@Graphene/CNx triple heterostructure. The obtained structure features crystalline TMSs nanoparticles wrapped by few-layer graphene and totally embedded within porous carbonized polyhedral frameworks. All three nanocomponents of TMSs@Graphene/CNx are connected via chemical bonding of S−C and TM−C, forming a chemical cross-linked nanostructure. Such structure design bears intrinsic advantages in improving the volumetric-efficiency for accommodating TMSs and electrical properties, enabling promising electrochemical performance in lithium- and sodium-ion storage. As a representative, the ZnS@Graphene/CNx electrode exhibits a high capacity of 891.5 mAh g−1 and an excellent retention of 80 % after 1000 cycles in lithium-ion batteries. More notably, this general metallothermic-sulfidation-carbonization mechanism can be applicable to all ZIFs, defining a new ZIFs-derived TMSs/C heterostructures.
AB - Enhancing electrochemical activity and structural stability of transition metal sulfides (TMSs) are critical for improving the capacity output and retention of TMSs-based batteries. Here, we report a new paradigmatic approach for fabricating TMSs/C composites, adopting a metallothermic-sulfidation-carbonization strategy (2TM + CS2 = 2TMS + C) based on zeolitic imidazolate frameworks (ZIFs) to synchronously construct a compact TMSs@Graphene/CNx triple heterostructure. The obtained structure features crystalline TMSs nanoparticles wrapped by few-layer graphene and totally embedded within porous carbonized polyhedral frameworks. All three nanocomponents of TMSs@Graphene/CNx are connected via chemical bonding of S−C and TM−C, forming a chemical cross-linked nanostructure. Such structure design bears intrinsic advantages in improving the volumetric-efficiency for accommodating TMSs and electrical properties, enabling promising electrochemical performance in lithium- and sodium-ion storage. As a representative, the ZnS@Graphene/CNx electrode exhibits a high capacity of 891.5 mAh g−1 and an excellent retention of 80 % after 1000 cycles in lithium-ion batteries. More notably, this general metallothermic-sulfidation-carbonization mechanism can be applicable to all ZIFs, defining a new ZIFs-derived TMSs/C heterostructures.
KW - Lithium/sodium storage
KW - Metallothermic reaction
KW - Transition metal sulfides
KW - Triple heterostructures
KW - Zeolitic imidazolate frameworks
UR - http://www.scopus.com/inward/record.url?scp=85151542683&partnerID=8YFLogxK
U2 - 10.1016/j.nanoen.2023.108401
DO - 10.1016/j.nanoen.2023.108401
M3 - Article
AN - SCOPUS:85151542683
SN - 2211-2855
VL - 111
JO - Nano Energy
JF - Nano Energy
M1 - 108401
ER -
