Few hydride-ion conductors exhibit chemical stability and hydride-ion conductivity, which are essential properties in developing hydride-ion-driven electrochemical devices. Herein, we successfully synthesized a novel hydride-fluoride system, SrMgH4 − xFx, possessing high atmospheric stability and relatively high hydride-ion conductivity. The correlation between anion composition, structure, hydride-ion conductive properties, and atmospheric stability in the hydride-fluoride system was elucidated. The doping of fluoride ions at hydrogen sites resulted in high atmospheric stabilities while retaining hydride-ion conductivities of SrMgH2F2 and SrMgHF3 of 3.4 × 10− 4 and 1.4 × 10− 4 S cm− 1 at 400°C, respectively. For SrMgHF3, in particular, 84% ionic conductivity was retained after exposure to the atmosphere. Hydride-fluoride systems enable the balancing of the ionic conductivity and atmospheric stability by controlling the H/F ratio. Our findings provide insight for use in effective material design to expand the use of metal hydrides in practical solid electrolytes for use in hydride-ion-driven devices.
Tujuan penelitian ini untuk menganalisis dan memahami implementasi kebijakan penanganan Corona Virus Disease 2019 (COVID-19) di Kota Kendari serta mengetahui faktor-faktor yang mempengaruhi implementasi kebijakan pemerintah Kota Kendari terkait penanganan tersebut. Jenis penelitian ini adalah penelitian deskriptif kualitatif. Informan penelitian ditentukan secara purposive sampling sebanyak 4 (empat) orang. Pengumpulan data dilakukan dengan metode observasi, wawancara, dan dokumentasi. Data yang telah dikumpulkan dianalisis secara kualitatif. Hasil penelitian menunjukkan bahwa implementasi kebijakan menurut Putra (2003) telah dilakukan oleh pelaksana kebijakan yaitu dengan penjabaran kebijakan ke dalam aktivitas pelaksanaan, pembentukan unit organisasi baru, pengalokasian sumber untuk mencapai tujuan serta koordinasi aparat terkait kebijakan. Adapun model implementasi menurut Edward III (2008) yaitu komunikasi, sumber daya, disposisi (sikap pelaksana) serta struktur birokrasi pada instansi pemerintahan Kota Kendari dalam mengimplementasikan kebijakan sudah tepat walaupun masih ada beberapa kekurangan dan kendala. Kata kunci : Implementasi, Kebijakan, Covid, Pemerintah
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