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Bicontinuous Spider Network Architecture of Free-Standing MnCoOX@NCNF Anode for Li-Ion Battery
ACS Omega ( IF 3.7 ) Pub Date : 2017-11-08 00:00:00 , DOI: 10.1021/acsomega.7b01228 Jitendra Shashikant Samdani 1 , Tong-Hyun Kang 1 , Chunfei Zhang 1 , Jong-Sung Yu 1
ACS Omega ( IF 3.7 ) Pub Date : 2017-11-08 00:00:00 , DOI: 10.1021/acsomega.7b01228 Jitendra Shashikant Samdani 1 , Tong-Hyun Kang 1 , Chunfei Zhang 1 , Jong-Sung Yu 1
Affiliation
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Herein, a smart strategy is proposed to tailor unique interwoven nanocable architecture consisting of MnCoOx nanoparticles embedded in one-dimensional (1D) mesoporous N-doped carbon nanofibers (NCNFs) by using electrospinning technique. The as-prepared network mat of N-doped carbon nanofibers with embedded MnCoOx nanoparticles (MnCoOx@NCNFs) is tested as a current collector-free and binder-free flexible anode, which eliminates slurry preparation process during electrode fabrication in the Li-ion battery (LIB). The MnCoOx@NCNFs possess versatile structural characteristics that can address simultaneously different issues such as poor conductivity, low cycling stability, volume variation, flexibility, and binder issue associate with the metal oxide. The free-standing mat electrode shows not only high initial discharge and charge capacities but also reversible discharge cycling stability of almost 80% retention up to 100 cycles and 60% retention up to 500 cycles at 1.0 A/g. Such high Li storage capacity and excellent cycling stability are attributed to the unique flexible and free-standing spider network-like architecture of the 1D MnCoOx@NCNFs that provides the platform for bicontinuous electron/ion pathways for superior electrochemical performance. Along with excellent electrochemical performance, simple synthesis procedure of unique binder-free MnCoOx@NCNFs can achieve cost-effective scalable mass production for practical use in a flexible mode, not merely in LIBs but also in a wide spectrum of energy storage fields.
中文翻译：
锂离子电池独立式MnCoO X @NCNF阳极的双连续蜘蛛网络架构
在本文中，提出了一种聪明的策略，通过使用静电纺丝技术来定制由MnCoO x纳米粒子组成的独特的交织纳米电缆结构，该纳米粒子嵌入一维（1D）介孔N掺杂碳纳米纤维（NCNFs）中。带有嵌入的MnCoO x纳米颗粒（MnCoO x @NCNFs）的N掺杂碳纳米纤维的制备网络垫经过测试，可作为无集流体和无粘合剂的柔性阳极，从而消除了在Li-离子电池（LIB）。MnCoO x@NCNF具有通用的结构特征，可以同时解决各种问题，例如导电性差，循环稳定性差，体积变化，柔韧性以及与金属氧化物有关的粘合剂问题。独立式垫式电极不仅显示出高的初始放电和充电容量，而且在1.0 A / g时可逆放电循环稳定性达到100个循环时几乎保持80％，保持500个循环时达到60％。如此高的锂存储容量和出色的循环稳定性归因于一维MnCoO x独特的灵活且独立的蜘蛛网状架构@NCNFs为双连续电子/离子通道提供了出色的电化学性能的平台。除了出色的电化学性能外，独特的不含粘结剂的MnCoO x @NCNF的简单合成工艺还可以实现灵活，不仅在LIB中而且在广泛的储能领域中以实用方式进行的经济有效的可扩展批量生产。
更新日期：2017-11-08
中文翻译：
锂离子电池独立式MnCoO X @NCNF阳极的双连续蜘蛛网络架构
在本文中，提出了一种聪明的策略，通过使用静电纺丝技术来定制由MnCoO x纳米粒子组成的独特的交织纳米电缆结构，该纳米粒子嵌入一维（1D）介孔N掺杂碳纳米纤维（NCNFs）中。带有嵌入的MnCoO x纳米颗粒（MnCoO x @NCNFs）的N掺杂碳纳米纤维的制备网络垫经过测试，可作为无集流体和无粘合剂的柔性阳极，从而消除了在Li-离子电池（LIB）。MnCoO x@NCNF具有通用的结构特征，可以同时解决各种问题，例如导电性差，循环稳定性差，体积变化，柔韧性以及与金属氧化物有关的粘合剂问题。独立式垫式电极不仅显示出高的初始放电和充电容量，而且在1.0 A / g时可逆放电循环稳定性达到100个循环时几乎保持80％，保持500个循环时达到60％。如此高的锂存储容量和出色的循环稳定性归因于一维MnCoO x独特的灵活且独立的蜘蛛网状架构@NCNFs为双连续电子/离子通道提供了出色的电化学性能的平台。除了出色的电化学性能外，独特的不含粘结剂的MnCoO x @NCNF的简单合成工艺还可以实现灵活，不仅在LIB中而且在广泛的储能领域中以实用方式进行的经济有效的可扩展批量生产。
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