Crystalline and amorphous metal sulfide composite electrode materials with long cycle life:Preparation and performance of hybrid capacitors

Crystalline@amorphous NiCo2S4@MoS_(2)(v-NCS@MS)nanostructures were designed and constructed via an ethylene glycol-induced strategy with hydrothermal synthesis and solvothermal method,which simultaneously realized the defect regulation of crystal NiCo2S4 in the core.Taking advantage of the flexible protection of an amor-phous shell and the high capacity of a conductive core with defects,the v-NCS@MS electrode exhibited high specif-ic capacity(1034 mAh·g^(-1) at 1 A·g^(-1))and outstanding rate capability.Moreover,a hybrid supercapacitor was assembled with v-NCS@MS as cathode and activated carbon(AC)as anode,which can achieve remarkably high specific energy of 111 Wh·kg^(-1) at a specific power of 219 W·kg^(-1) and outstanding capacity retention of 80.5%after 15000 cycling at different current densities.

制度逻辑视角下新兴市场跨国企业的组织正当性平衡战略--以万华集团跨国并购为例

本文从制度逻辑视角探讨新兴市场企业基于组织正当性平衡管理的混合逻辑战略及其过程实现机制。通过2009—2018年万华集团的跨国并购案例研究,发现新兴市场企业在东道国面临制度逻辑的国别冲突和治理竞争双向挑战,组织正当性管理焦点呈现外部到内部的动态变化;结构型混合和组合型混合战略在跨国并购不同阶段的动态切换和组合运用,有助于企业内部多重逻辑从区间隔离转向组合协作,组织正当性实现外强内弱到内外同步增强的平衡状态。相关研究为新兴市场企业如何运用混合逻辑战略实现组织正当性动态平衡提供了理论补充,同时也为中国跨国企业正当性战略选择提供实践指导。